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HomeMy WebLinkAboutARB201900047 Plan - Other (not approved) 2019-06-24FLOW AUTOMOTIVE MAZDA/ VOLKSWAGEN OF CHARLOTTESVILLE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 TSK-1 OF-2C GST-1TSK-1TV LG-1LG-1LG-1LG-1LG - 1FCM-2ASH-1ASH-2ASH-3A SH-4A SH-4A OF-2EOF-2E.1 OF-2E.2ST-2A.2TSK-1GST-1GST-1VW-RECEP-2CM-2A.3CM-5ATSK-1BST-1BST-1BST-1BST-1OF-5ASR-5ASR-3A X PER MWVPER MWVTSK-1SR-2A SH-1A SH-1COF-2COF-2CTSK-1TSK-1GST-1 GST-1 GST-1 ST-2AST-2AST-1DST-1DSR-3A LG-1LG-1LG - 1FLG - 3PER MWVTSK-1TSK-1TSK-1ST-2BOF-2C TSK-1 GST-1GST-1ST-2AST-1DST-1DLG-1LG-1LG-1LG - 1FTSK-1TSK-1TSK-1TSK-1TSK-1TSK-1TSK-1TSK-1OF-3B TSK-1LG-2BLG-1BOF-4ASH-6A SH-6A SH-6A SH-1ATSK-1 TSK-1 0F-2A.1 0F-2A.1 OF-SWOF-1CCM-5A.1CM-5A.1OF-2EOF-2E.1 OF-2E.2ST-2A.2TSK-1GST-1GST-1UP OF-2EOF-2E.1OF-2E.2ST-2A.2TSK-1GST-1GST-1SR-2ASR-2A106 SF ADMIN 121 310 SF BREAKROOM 122 274 SF SALESWORKROOM 123117 SF MENS T. 116 59 SF RETAIL /CASHIER 125 5146 SF SERVICE DEPARTMENT 131 24 SF JAN. 124 137 SF WOMENST. 117 NEW CAR DELIVERY WELCOME WALLVW GRAPHICACCESSORY DISPLAY 1524 SF SERVICE RECEPTION 102 75 SF PARTSRECEIVING 127 52 SF UNISEX T. 128 75 SF PARTSMGR. 129 72 SF TECHPARTS 130 581 SF PARTSSTORAGE 126 611 SF ALIGNMENTBAY 132 PREP BAY EV LIFT 152 SF TECHBREAK 134 134 SF MENS T. /LOCKER 135 249 SF TOOLROOM 133 COPY 166 SF CUSTOMERLOUNGE 111 170 SF DRIVERGEAR 112 152 SF SERVICEWRITE-UP 113 111 SF SALES 110 180 SF SALESMGR. 109 289 SF GREETER/RECEPTION 103 189 SF LOUNGE 105 258 SF SALES 106 105 SF NCDCONSULT. 107 117 SF F & I 120 115 SF F & I 119 144 SF RETAILPARTS 118 116 SF SERVICEMGR. 115 ELECT. PANELS DASHED LINE INDICATES EXTENT OF SECOND FLOOR PARTS SP - 1 #2 ENTRY FRAME WITH CLEAR INSULATED GLAZING SYSTEM. VW LOGO BOTH SIDES. ROUND COLUMN REQUIRED. CENTERLINE TO ALIGN WITH CURTAINWALL MULLION CENTERLINE. PAINT PT-5a PROVIDE FULL TILES ALONG CURTAINWALL SYSTEM ACM - 1 #2 BUILDING FRAME WITH ILLUMINATION TROUGH AT INTERIOR PERIMETER DEALER NAME PLATE WITH BACKLIT LETTERS BY VWoA SIGN VENDOR. CLEAR ANOD. ALUM. CURTAINWALL (CW-1) WITH CLEAR GLAZING (GL-1) ACM-1 #2 ENTRY FRAME WITH ILLUMINATION TROUGH AT INTERIOR PERIMETER & CLEAR INSULATED GLAZING SYSTEM. VW LOGO BOTH SIDES. ACM-1 #2 BUILDING FRAME WITH ILLUMINATION TROUGH AT INTERIOR PERIMETER EV CHARGING STATION RE: EM1.0 98 SF SALES 108 COFFEEPROPERTY LINEPROPERTY LINEPROPERTY LINE A7.5 11021 SF VOLKSWAGENSHOWROOM 101 1 A3.1 2 A3.1 3 A3.1 4 A3.1 --- A2.2 1A6.4 3 41 2 221 SF GREETERCAR 104ROUND COLUMN REQUIRED. CENTERLINE TO ALIGN WITH CURTAINWALL MULLION CENTERLINE. PAINT PT-5a A2.3 1- - A6.4 5 1 A4.3 A2.1 2project: for: job number: drawing: date revisions: copyright:©brwarchitects, P.C. drawn by:checked by: sheet approval seal 6/3/2019 2:09:54 PMC:\Revit_Local\18047_FLOW Volkswagen_CENTRAL_vdo.rvtFLOW Volkswagen 1311 Stony Point Rd,Charlottesville, VA 22911 FLOW AUTOMATIVE COMPANIES 18047 FIRST FLOOR PLAN 2019 VD DT 27 May 2019 A1.1 VDSD Pricing Set 1/8" = 1'-0"A1.1 1 First Floor FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 PROJECT NARRATIVE This submission includes 2 new automotive dealerships; which are separate entities but situated on adjacent properties at Pantops Corner of Route 20 & 250. The new Mazda Dealership will be located in the same location as the existing Mazda (1289 Stony Point Rd.); replacing the 1970’s CMU block structure to be demolished. In its place, the new Mazda will provide all the amenities of a full-service dealership: an up-to-date showroom with wait- ing areas and offices, a vehicular drop off station as well as a new Service Bay Garage. While the new Mazda complex occupies a similar footprint as the old, it will provide a much-improved plan for both internal daily business operations as well as on the exterior increasing the efficiency of the site and improving its circulation. Just as important and related to the E.C. review, the new Showroom/Service Center will provide a much-need- ed upgrade from the existing - a somewhat dilapidated structure on an unimproved site. We see this project as an opportunity to enhance the character of the corner by improving the Site Plan with better organization and improved county recommended landscaping. And from an architec- tural standpoint, the project replaces the existing with a new building that addresses the corner and is more suitable to its prominent location. The current Mazda design standard is a contemporary style. Subdued with a simple combination of light and dark metal paneling, the exterior façade shows enough variety to create and maintain interest but not overly flamboyant so as to overwhelm the rest of the character on the corner or go against precedent on the 250 corridor. Large storefront windows are added to the façade which rounds out the material palette and provides a healthy amount of daylighting for the interior. Mazda’s main design feature – referred to as ‘the jewel box’ – is a 2 story room enclosed in a glass frame that encourages one’s gaze on the outside into the interior environment. This ‘jewel box’ seems an appropriate answer for addressing the Pantops Corner at this difficult site. Its prominent but well proportioned oversized glass wall is oriented toward the corner and enhances the impor- tance of its location. Further, the interior wall of the jewel box is lined with a wood plank tile which forms a warm contrast to the exterior and materially ties into the local vernacular. The limitations of this particular site is an undeniable aspect of assessing both project plan layouts. As the diagrams on the following page illustrate, a major feature of the site is the established electric easement cutting across a large section of the south east corner; directly related to the large high voltage power lines overhead. Although many would agree in recom- mending positioning the building’s prominent corner (and jewel box) closer to the street edge, the easement has forced us to locate the building to- ward the rear of the site. You will also notice that the easement - in running diagonally across the site - pinches the southern portion. This circumstance along with the presence of steep slopes – shifts the Mazda building toward the north west section. Vehicular circulation is another major component limiting options on how the site might be laid with safe and efficient traffic flow. Engineering rec- ommendations for limiting entry to a shared access make the notion of efficient traffic flow paramount to this already tight, oddly shaped site. The current building plans strategically place the customer drop off garage as close as possible to the main road entry – which thereby reduces the amount of cars driving around the parking lot. In addition both dealer drop-off stations – which have to be adjacent to the showroom – are also situated where a more private drive connects the drop off to the service garage. The new VW complex (1311 Stoney Point Road) will provide the same full-service amenities as Mazda and is located on the next parcel down on the lot that currently includes the old Rexall building and also a smaller out-building to the north; both of which are slated for demolition. Other than the buildings mentioned above, the nature of this lot is mostly an old parking lot and overgrown vegetation. Unlike Mazda, which is oriented orthogonal to Rt. 250, VW orientation turns its front façade to run parallel to Rt. 20; helping to reinforce and maintain a street edge. With the electrical easement less of a constraint on this parcel, the major limitation is the site’s long and skinny proportion. As with Mazda, the buildings orientation allows for immediate proximity from the Entry to vehicular drop-off as well as an efficient connector driveway from drop off zone to Service Bays. As with Mazda, the entry to the Service Bays are hidden/screened from site by the main building. As with Mazda, this particular site layout is advantageous in allowing for efficient daily operations and a plus for the Entrance Corri- dor in the way it limits the visual noise of constant visible moving vehicular traffic on site. While these projects will be under one ownership, as 2 unrelated corpora- tion on different parcels, they are considered separate projects. However, given their adjacency and location on an important corner of the En- trance Corridor; the county recommended studying them together given the impact they will ultimately have in the area. We look forward to work- ing with the county in providing the best possible design solutions. FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 Response Memo to County Recommendations 1. Revise Forms, proportions, scale and materials to achieve greater balance of contemporary design with historic compatibility • VW – The following are changes made in response to the above recommendation: ○Reducing Length of Front Façade and in turn diminishing the front curtain wall. A major design revision was achieved by removing the Ser- vice Bay Doors from the main glass front façade and pushing the entire Service Bay front back from the main façade by 15’. This revision relates to the Design Guidelines by breaking down the building scale, reducing the sense of blankness of the original predominantly glass front façade, and fostering greater connection to the local historic fabric. ○Numerous Material Changes: Both the addition of stone paneling replacing VW’s white metal paneling and the addition of brick create a greater balance of contemporary with Historic compatibility. • Mazda – ○Replacing all white metal paneling with Brick – A good deal of the original Mazda design included white metal paneling that we are now substituting for brick. ○Addressed further breaking down the scale of the Service Bay block through material detailing. While the original design begins to break down the scale of the entire building by different ‘sub-massses’ , the Service Bay scale and proportion has been revised in this revision by bringing the new brick down to the corner. This move elimi- nates the stark contrast between the upper and lower half of this volume - which created a sense that the upper white sec- tion was floating – and in turn creates a sense of ‘grounding’. In addition, the revised design articulates patterning through detailing reveals within the brick; which helps to break down and lend interest to the brick face. FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 RESPONSE TO COUNTY COMMENTS 2. Revise the architectural designs to use forms, features, materials and colors that are compatible with the forms and features of signif- icant historic buildings in the area. Consider brick or stone or other natural materials instead of metal panels. Consider revising the massing of the VW service drop-off. • VW ○Per Board’s recommendation, we revised the Service Drop off Bay - disenagaing it from the main front facade; thereby breaking down the scale of the overall structure. Now appearing as a smaller volume beside the larger show- room, this redesign is more in keeping with the local context by reducing the extent of the main glass facade and creat- ing a larger to smaller relationship that not only relates better to the surrounding historic structures but also to the Mazda design. ○Stone - particularly limestone paneling - shall replace the orignal white metal paneling on the design main frames. ○Brick is now being used as a secondary accent material inl- cluding at the front elevation of the Service Bay. Adding a material more in keeping with the local building material palette. • Mazda ○Brick shall replace all white metal paneling A major shift in the predominant building skin that brings the design more in line with the local context. 3. Provide Details proposed curtain wall • See included detail drawings 4. Clarify that the windows in the service wing use vision glass • Confirmed 5. Revise Design to emphasize human scale • VW ○The new revised massing reduces the overall scale of the building by breaking it down to a major and minor volume; thereby moving from a more monumental design to one more in line with the human scale. ○The Entry Portals within the Showroom glass facade help re- late the 2 story structure to the human scale and provide an instantly recognizeable entry element for the pedestrian. Also the entry now clad in limestone - were reduced in size upon redesign. ○The new material change provides a warmer, more tex- tured and sensory experience for the human scale. • Mazda ○The Mazda Design breaks down the entire complex into a series of massings more in keeping with the human scale. ○Although a 2 story space, the Mazda ‘Jewel Box’ is lined inside with a warm wood tile that relates better to the human scale vs a colder ma- terial. ○As with VW, the Mazda switch to a majority of exterior brick as a new material change provides a warmer, more textured and sensory experience for the human scale. 6. Revise Design to establish greater coordination with nearby buildings. • VW ○With a change of materials - brick and stone - we are relating the new VW to the best precedents within the surrounding context. ○The building’s orientation on site also reflects the inten- tion of defining the street edge while also hiding the Service Bay volume to the rear of the site. ○ • Mazda ○The reduction of a majority of the metal paneling. ○White Brick - there are many examples of brick / stucco palette within the corridor. With the grey to white combination, we are striving for an elegant solution that on the other hand doesn’t call too much attention to itself and fits well within the sur- rounding fabric. 7. Revise the Trademark Design to meet the EC Guidlelines ○see page ‘Existing trademark Buildings for comparison imagery and further clarificaiton on how these particular designs depart from the standard trademarks. 8. Provide specificaiton on window Glass ○glass to meet EC guildelines - sample can be provided if requested. ○ 12. Standard Mech Equip. note placed on Architecturals 13. Eliminate the illumination trough from the design. ○We request keeping illumintion trough with the condition that it be set on a timer per the County’s regulation. 9.-30. Refer to SITE PLAN FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 existing VW site looking north east on RT 20 existing VW site looking south east on RT 20 SITE EXISTING PHOTOS existing Mazda site looking north east on RT 20 existing Mazda site looking south east on RT 20 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 E L E C T R I C A L E A S E M E N T B O U N D A R Y E L E C T R I C A L E A S E M E N T B O U N D A R Y 3 0' BU ILD IN G SETBA C K S A N I T A R Y S E W E R E A S E A M E N T PROPERTY LINE PROPERTY LINE PROPERTY LINE PRO PERTY LIN EE L E C T R I C A L E A S E M E N T B O U N D A R Y E L E C T R I C A L E A S E M E N T B O U N D A R Y 30 ' BU ILD IN G SETBA C K S A N I T A R Y S E W E R E A S E A M E N T PROPERTY LINE PROPERTY LINE PROPERTY LINE PRO PERTY LIN EE L E C T R I C A L E A S E M E N T B O U N D A R Y E L E C T R I C A L E A S E M E N T B O U N D A R Y 3 0' BU ILD IN G SETBA C KS A N I T A R Y S E W E R E A S E A M E N T PROPERTY LINE PROPERTY LINE PROPERTY LINE PRO PERTY LIN EE L E C T R I C A L E A S E M E N T B O U N D A R Y E L E C T R I C A L E A S E M E N T B O U N D A R Y 30 ' BU ILD IN G SETBA C K S A N I T A R Y S E W E R E A S E A M E N T PROPERTY LINE PROPERTY LINE PROPERTY LINE PRO PERTY LIN EFLOW MAZDA / VW DIAGRAMS 1" = 100'-0" EASEMENT 1" = 100'-0" TOPOGRAPHIC CONSTRAINTS 1" = 100'-0" FRONTAGE 1" = 100'-0" FUTURE DEVELOPMENT SITE DIAGRAMS FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 EXISTING SITE PLAN PROPERTY LINE PROPERTY LINEPROPERTY LINERT 20 STONY POINT ROAD RT 250RICHMOND ROADFLOW Volkswagen Site Plan Existing 1" = 50'-0"11x17 A0 1 Site Plan 1-50 existing Existing Mazda 1298 Stony Point Road 1311 Stony Point RD scale : 1” = 50’-0” Rexall building to be demolised Parking lot Building to be demolised FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 BUILDING PLANS AND SITE CIRCULATION scale : 1” = 50’-0” FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 EXISTING SITE PHOTO LOOKING NORTH EAST FROM RT. 250 INTERSECTION FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 LOOKING NORTH EAST FROM RT. 250 INTERSECTION * selected landscape species are for illustration only FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 EXISTING SITE PHOTO LOOKING EAST FROM RT. 20 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 LOOKING EAST FROM RT. 20 * selected landscape species are for illustration only FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 PERSPECTIVE LOOKING NORTH EAST FROM RT. 20 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 PERSPECTIVE - VEHICULAR ENTRY FROM RT. 20 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 LOOKING EAST AT VW FRONT FACADE FROM RT. 20 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 PERSPECTIVE LOOKING SOUTH EAST FROM RT. 20 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 PERSPECTIVE LOOKING SOUTH EAST FROM RT. 20 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 LOOKING NORTH EAST FROM RT. 250 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 LOOKING NORTH WEST FROM RT.250 FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 scale : 3/32” = 1’-0” VW - FRONT ELEVATION STONE PANEL SP-1 BUILDING FRAME HOURS OF OPERATION SIGNAGE RE: TO DCD SHEET G3.0 CENTERLINE OF VW SIGNAGE ACM-1 #2 SERVICE FRAME WITH ILLUMINATION TROUGH AT INTERIOR PERIMETER CLEAR ANOD. ALUM. CURTAIN WALL (CW-1) WITH CLEAR GLAZING (GL-1) RE: A7.12 DEALER FRAME WITH ILLUMINATED DEALER NAME SIGN WITH BLACKLIT LETTERS BY VWoA SIGN VENDOR. SEE A6.4 BRICK WALL - KLAYCOAT - 'STONE GREY' BY GLEN-GERY I SIDE ELEVATION 108' - 6 1/2" MATERIAL CHANGE PER GUIDELINES REVISED DEALER NAMEPLATE FRAME- FOR INCREASED COMPATABILITY TO HUMAN SCALE 15' - 9"18' - 0"21' - 9"STONE PANEL SP-1 ENTRY FRAME WITH CLEAR INSULATED GLAZING SYSTEM AND VW LOGO CLIP ON INTERIOR AND EXTERIOR FACES REVISED SERVICE BAY - RECESSED FRONT - RELATES TO GUIDELINES BY 1. BREAKING DOWN THE BUILDING SCALE 2. REDUCING 'BLANKNESS' OF ORIGINIAL FACADE DESIGN FRONT ELEVATION BUTT JOINT CURTAIN WALL STONE PANEL SP-1 SERVICE FRAME FLOW Volkswagen EXTERIOR ELEVATIONS 3/32" = 1'-0" FRONT/ WEST ELEVATION Note: Visibilty of all mechanical equipment from the Entrance Corridor shall be eliminated FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 VW - NORTH ELEVATION scale : 3/32” = 1’-0” DEALER NAME PLATE WITH BACKLIT LETTERS BY VWoA SIGN VENDOR. SEE A7.11 STONE PANEL SP-1 ENTRY FRAME WITH CLEAR INSULATED GLAZING SYSTEM AND VW LOGO CLIP ON INTERIOR AND EXTERIOR FACES CLEAR ANOD. ALUM. CURTAIN WALL (CW-1) WITH CLEAR GLAZING (GL-1) STONE PANEL SP-1 BUILDING FRAME O.H. DOORS PAINT PT-7 (TYP.) IF NO GLAZING MATERIAL #2 REFER TO DCD FOR MATERIAL OPTIONS (DARKER VALUE) MATERIAL #1 REFER TO DCD FOR MATERIAL OPTIONS (LIGHTER VALUE) MAN DOORS PAINT PT-7 (TYP.) GLASS/ALUM.VEHICLE ACCESS DOOR HOURS OF OPERATION SIGNAGE RE: TO DCD SHEET G3.0 I ANGLED SIDE ELEVATION SIDE ELEVATION REAR FACADE - NOT SEEN FROM EC. 56' - 2 1/8"56' - 0 5/8"65' - 4 5/8" 177' - 7 1/2"19' - 7"2' - 2"21' - 9"FLOW Volkswagen EXTERIOR ELEVATIONS 3/32" = 1'-0" North Elevation brick accentstucco - light grey FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 VW - SOUTH ELEVATION scale : 3/32” = 1’-0” SIDE OF STONE PANEL SP-1 BUILDING FRAME CLEAR ANOD. ALUM. CURTAIN WALL (CW-1) WITH CLEAR GLAZING (GL-1) RE: A7.12 BRICK WALL - KLAYCOAT - 'STONE GREY' BY GLEN-GERY MAN DOORS PAINT PT-7 (TYP.) MASONRY OR EIFS O.H. DOORS PAITN PT-7 (TYP.) IF NO GLAZING3' - 9"2' - 0"16' - 0"21' - 9"66' - 9 5/8"34' - 9 5/8" SERVICE BAY 76' - 0 1/4" I HIGHLY VISIBLE FROM EC.BARELY VISIBLE FROM EC. SIDE OF STONE PANEL SP-1 SERVICE FRAME 177' - 7 1/2" FLOW Volkswagen EXTERIOR ELEVATIONS 3/32" = 1'-0" South Elevation - Facing Right Showroom Note: Visibilty of all mechanical equipment from the Entrance Corridor shall be eliminated stucco - light grey FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 VW - CURTAIN WALL TYP. DETAILS LIMESTONE PANEL TO REPLACE ACM METAL PANEL LIMESTONE LIMESTONE PANEL TO REPLACE ACM METAL PANEL LIMESTONE LIMESTONE PANEL TO REPLACE ACM METAL PANEL LIMESTONE PANEL TO REPLACE ACM METAL PANEL LIMESTONE PANEL TO REPLACE ACM METAL PANEL LIMESTONE PANEL TO REPLACE ACM METAL PANEL LIMESTONE PANEL COPING FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 MAZDA - FRONT ELEVATION scale : 3/32” = 1’-0”20' - 0"24' - 0"10' - 0"18' - 0"28' - 2"77' - 8"61' - 4" BRICK -WHITE (COLOR TO MATCH MP-2) METAL PANELS- CHARCOAL GREY BRICK -WHITE (COLOR TO MATCH MP-2) EIFS -1 CHARCOAL GREY MP-3 METAL PANEL - CHARCOAL GREY 167' - 2" VISION GLASS 6' - 0"6' - 0"12' - 0"MATERIAL CHANGE PER GUIDELINES MATERIAL CHANGE PER GUIDELINES Project Name EXTERIOR ELEVATIONS 3/32" = 1'-0" Mazda - Front Elevation Option 1 Note: Visibilty of all mechanical equipment from the Entrance Corridor shall be eliminated Black Black FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 MAZDA - NORTH ELEVATIONS NORTH ELEVATION scale : 3/32” = 1’-0” RETAINING WALL SERVICE BAY - NOT SEEN FROM EC. 15' - 0"19' - 7 1/8" SERVICE DRIVE- THRU 24' - 0"29' - 3" 87' - 10 1/8"20' - 0"24' - 0"MP-3 METAL PANEL - CHARCOAL GREY - BEYOND BRK-1 BRICK - WHITE EIFS-1 CHARCOAL GREY BRICK COPING 18' - 0"10' - 0"18' - 6"70' - 0"18' - 0" 2' - 0"20' - 0"24' - 0"6' - 0" 6' - 0"10' - 0" 1' - 0" 10' - 0" 3' - 0" WALL BEYOND 88' - 6" WALL BEYOND MP-3 METAL PANEL -CHARCOAL GREY BRK-1 BRICK -WHITE BRICK COPING Project Name EXTERIOR ELEVATIONS 3/32" = 1'-0" Mazda - North 3/32" = 1'-0" Mazda - South Black FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 SOUTH ELEVATION RETAINING WALL SERVICE BAY - NOT SEEN FROM EC. 15' - 0"19' - 7 1/8" SERVICE DRIVE- THRU 24' - 0"29' - 3" 87' - 10 1/8"20' - 0"24' - 0"MP-3 METAL PANEL - CHARCOAL GREY - BEYOND BRK-1 BRICK - WHITE EIFS-1 CHARCOAL GREY BRICK COPING 18' - 0"10' - 0"18' - 6"70' - 0"18' - 0" 2' - 0"20' - 0"24' - 0"6' - 0" 6' - 0"10' - 0" 1' - 0" 10' - 0" 3' - 0"WALL BEYOND 88' - 6" WALL BEYONDMP-3 METAL PANEL -CHARCOAL GREYBRK-1 BRICK -WHITEBRICK COPING Project Name EXTERIOR ELEVATIONS 3/32" = 1'-0" Mazda - North 3/32" = 1'-0" Mazda - South RETAINING WALL SERVICE BAY - NOT SEEN FROM EC. 15' - 0"19' - 7 1/8" SERVICE DRIVE- THRU 24' - 0"29' - 3" 87' - 10 1/8"20' - 0"24' - 0"MP-3 METAL PANEL - CHARCOAL GREY - BEYOND BRK-1 BRICK - WHITE EIFS-1 CHARCOAL GREY BRICK COPING 18' - 0"10' - 0"18' - 6"70' - 0"18' - 0" 2' - 0"20' - 0"24' - 0"6' - 0" 6' - 0"10' - 0" 1' - 0" 10' - 0" 3' - 0" WALL BEYOND 88' - 6" WALL BEYOND MP-3 METAL PANEL - CHARCOAL GREY BRK-1 BRICK - WHITE BRICK COPING Project Name EXTERIOR ELEVATIONS 3/32" = 1'-0" Mazda - North 3/32" = 1'-0" Mazda - South MAZDA - SOUTH ELEVATIONS scale : 3/32” = 1’-0” Note: Visibilty of all mechanical equipment from the Entrance Corridor shall be eliminated Black FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 ELEMENTS OF ENTRY CORRIDOR GUIDELINES Proposed FLOW Volswagen ShowroomNew development entrance FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 ELEMENTS OF ENTRY CORRIDOR GUIDELINES Proposed FLOW Mazda Compatibility with the Character of the Entrance Corridor The size and scale of this building compares appropriately with the size and scale of buildings on both sides of the Entrance Corridor. It would fall into the moderate range in comparison to other buildings in the area. The Entrance Corridor along US 250 east of Charlottesville at Pantops represent a diversity of architectural approaches to design and scale. Stylistically, both dealerships appear to fit within this wide range of styles and one may argue enhances the Corridor with their well detailed design standards. Both Dealerships suggest a contem- porary design with simple yet varied materials; that leads to a classical elgance through their simplicity. Further one might argue that both de- signs provide visual interest while avoiding the ‘overly fussy’ that often lead to a lot of visual noise in high traffic areas. Clean Machine Car Wash Compatibility with Significant Historic Sites Both dealerships utilize a contemporary design that prioritized a clean- ess of geometry that one would assiciate with our historic structures. The simplicity of the glass and metal paneling puts a focus on materiality of the facade and again avoids the fussiness that is contrary to our historic context. The Appearance of Blankness Should be relieved using details or vegetation The Site Plan shows a good deal of improvement in regards to the Landscaping. While the electric easement limits not only building placement but also the variety of tree we can use (it has to be a smaller understory), our proposed landscape shows a multi-layered tree layout (using native species) that both strengthens street edge but also creates a buffer at this busy intersection. Form, Shape, Scale, and Material Creating a Cohesive Whole The two dealerships deal with the idea of form and shape in different ways but both provide designs that allow for a massing and compos- tion appropriate to the Entrance Corridor. Mazda breaks its facade down into a variety of forms and emphasiozes priority of function through a series of diffierent sized masses. Materiality and the variety of major and minor shapes help tie the overall composition together. This strategy breaks down the overall scale of the building and avoids the monotony and blankness on less successful designs. On the other hand, VW maintains a design that is more singular and its scale ius broken down by the various portal or gates the denote Entry and the other major functions of the dealership. As a whole, the VW design seems to work as a simple, framed box that is well detailed and again emphasizes a contemporary simplicity. Buildings should relate to their site and surrounding context Both buildings seem to fit within the wide range of structures located at the intersection. Buildings should have a human scale Both Dealerships provide a strong sense of entry and scaling mecha- nisms that deal with human scale in that they allow people to relate to the scale of the complexes in a personal way. FLOW MAZDA/ VOLKSWAGEN AUTOMOTIVE SHOWROOM & SERVICE CENTER ARB Submittal June 24, 2019 From left: Palm Springs, CA; Surrey, BC; Raleigh, NC; Corpus Christi, TX From left: Orlando, FL; Schrewsbury, NJ EXISTING TRADEMARK BUILDINGS Note: Charlottesville VW Design proposal derviates from these typical Prototypes in the following ways: - White metal paneling replaced with Stone - Service Bay recessed from Main Front Facade, breaking down the scale of Front Facade - Brick replace metal as main accent material. - Overall building layout revised to better suit this particular site; providing a strong building edge along route 20. Note: Charlottesville Mazda Design proposal derviates from these typical Prototypes in the following ways: - White metal paneling (the majority of the standard design) replaced with Brick. - Jewel Box reoriented to fit this particular site and work with its limitations. - The Service Bay Garage redesigned to better fit local context and this particular site: - Brick runs down at corner (and breaks the standard rule of white on top and black on bottom) to better address the main street corner. - Windows and Metal infill paneling between windows enhances visual interest at Service Bay Garage given it’s prominent location. Typical design standards show these areas are most often covered in stucco and maintain the upper and lower black and white color palette. Boundary & topographic survey provided by:RoudabushSITEEXISTING Area %Building 17,371 SF 15.3%Pavement 51,671 SF 45.4%Sidewalk 0 SF 0%Open Space 44,649 SF 39.3%Total= 113,691 SF (2.61 ac.)PROPOSED Area %Building 23,391 SF 14.6%Pavement 51,324 SF 12.7%Sidewalk 2,453 SF 0.3%Open space 36,523 SF 72.4%Total= 113,691 SF (2.61 ac.)FLOW MAZDA / VWLEGENDEXISTINGNEWDESCRIPTIONINITIAL SITE DEVELOPMENT PLANTAX MAP 78, PARCELS 5C & 5GALBEMARLE COUNTY, VIRGINIAC1 COVERC2 EXISTINGC3 SITE PLANC4 GRADING PLANC5 EASEMENT PLANC6 LANDSCAPE PLANC7 SITE DETAILSSHEET INDEXAPPROVALSVICINITY MAPOWNER/DEVELOPERSCALE : 1"=2000'Albemarle County Service AuthoritySIGNSboundariesBENCHMARKSITE PROPERTY LINEADJACENT PROPERTY LINEVACANT PROPERTY LINEBUILDING SETBACKPARKING SETBACKACCESS EASEMENTsite textNOTESPARKING COUNTDIMENIONSgroundGRADING EASEMENTINDEX CONTOURINTERVAL CONTOURSPOT EVELVATIONTOP OF CURB ELEVATIONTOP OF WALL ELEVATIONBOTTOM OF WALL ELEVATIONRETAINING WALLSTAIRSbuildingBUILDINGROAD-EDGE OF PAVEMENTROAD- CENTERLINEROAD-FRONT OF CURBROAD BACK OF CURBCG-2 STANDARD 6" CURBCG-6 STANDARD 6" CURB AND GUTTERCG-12 STANDARD ACCESS RAMPSIDEWALKBIKE PARKINGPARKING SURFACECROSSWALKHANDICAP ACCESSIBLE AISLEHANDICAP PARKINGmaterialCONCRETE/PAVEMENT-SIDEWALKRIPRAPASPHALTGRASSEC-3 MATTINGEC-2 MATTINGWETLANDTREELINEFENCESTREAMutilityUTILITY EASEMENTUTILITY POLELIGHT POLEOVERHEAD UTILITYMANHOLEsanitary & sewerSTORM LINEROOF DRAINDRAIN INLETDRAINAGE EASEMENTSTORM DRAINAGE EASEMENTSTORM SEWER EASEMENTSEWER LINESANITARY EASEMENTwaterWATER LINEWATER METERWATER VALVE AND BOXFIRE HYDRANTWATER EASEMENTgasGAS LINE1.00'10x10Map provided by Google.comDateFlow 1289 Stony Point LLC,c/c Flow Companies LLC1425 Plaza DriveWinston Salem, NC 27103ZONINGTMP 78-5C. 78-5GHC-Highway CommercialEC- Entrance CorridorDISTRICTRivannaSOURCE OF TITLEDB 4873/577SOURCE OF BOUNDARY AND TOPOGRAPHYMaximum Allowable: 60'Maximum Proposed: 25'BUILDING SETBACKS40' Setback from internal Commercial and Industrial Subdivision Streets10' Setback from adjacent commercial and industrial usesEXISTING USE1,952 SF Auto DealershipPROPOSED USE2 new auto dealerships including showroom, drop off and service areas.1) Volkswagon combined 15,514 SF2)Mazda combined SF 10,877 SFMaximum Disturbed Area: 1.24 ACLAND USE SCHEDULEAll signs and pavement shall conform with the latest edition of the MUTCD Guidelines.A sign permit must be issued in accordance with the Louisa County Sign Regulations prior to placement of any signs on-site.Contractor shall provide handicap signs as shown on plan.FLOODZONEAccording to the FEMA Flood Insurance Rate Map, effective date February 4,2005 (Community Panel 51003C0287D),this property does not lie in a flood plain.WATER & SANITARY SERVICESSite is served by Albemarle County Service Authority.PARKING SCHEDULEC1COVERSHEET C1 of 6RESERVOIR WATERSHEDThis site is within the Upper Rivanna River Watershed.This site is not within a watershed of a public water supply.BUILDING HEIGHTSBuilding OfficialDateFire OfficialDateArchitectural Review BoardDateCurrent Development EngineerDateCurrent Development PlannerDatexxxITE Trip GenerationRequired Parking: Sales - 1 space per 1,500 SF display area15,552 SF display / 1,500 SF = 11 customer spaces11 customer spaces (4 accessible spaces provided)Services - 1 employee space + 2 additional spaces per service stall17 stalls: 17 employee spaces + 34 customer spaces = 51 spaces17 employee spaces + 34 customer spaces (4 accessible spaces provided)Total Parking Required = 62Total Parking Provided = 92 (NOT INCLUDING DISPLAY)Trip generation reflects AM and PM peak hour traffic.BENCHMARK Datum for topography is NAVD 88GENERAL CONSTRUCTION NOTES1. Prior to any construction within any existing right-of-way, including connection to any existing road, a permit shall be obtainedfrom the Virginia Department of Transit (VDOT). This plan as drawn may not accurately reflect the requirements of thepermit.Where any discrepancies occur the requirements of the permit shall govern.2. All materials and construction methods shall conform to the current specifications and standards of VDOT unless otherwisenoted.3. Erosion and siltation control measures shall be provided in accordance with the approved erosion control plan and shall beinstalled prior to any clearing, grading or other construction.4. All slopes and disturbed areas are to be fertilized, seeded and mulched.5. The maximum allowable slope is 2:1 (horizontle:vertical). Where reasonably obtainable, lesser slopes of 3:1 or better are to beacheived.6. Paved, rip-rap or stabilization amt lined ditch may be required when in the opinion of the County Engineer or designee it isdeemed necessary in order to stabilize a drainage channel. 7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices.8. Unless othrewise noted all concrete pipe shall be reinforced concrete pipe - Class III.9. All excavation for underground pipe installation must comply with OSHA Standards for the Construction Industry (29 CFR Part1926).GENERAL WATER & SEWER NOTES”“”“”“” “” “” ““” “VDOT NOTESGENERAL NOTESSETBACKSFront minimum = 10 FT from right-of-way or the exterior edge of the sidewalk if the sidewalk is outside of the right-of-way. Front maximum = 30 FT fromright-of-way or the exterior edge of the sidewalk if the sidewalk is outside of the right-of-way.Side/Rear lots zoned Highway Commercial = primary structure shall be constructed and separated in accordance with the current edition of the BuildingCode. No maximum Side/Rear setback.Off-street parking and loading setbacksMinimum off-street parking/loading front setback = 10 feet from any public street right-of-way.Minimum off-street parking/loading setback side and rear setbacks = no off=street parking or loading space shall be located closer than 20 feet to the districtboundary.Virginia Department of TransportationDate912 E. HIGH ST.CHARLOTTESVILLE VA, 22902LAND PLANNING - PROJECT MANAGEMENT434.227.5140JUSTIN@SHIMP-ENGINEERING.COMALBEMARLE COUNTY, VIRGINIA19.020FILE NO.REVISION:2019.04.15SUBMISSION:INITIAL SITE DEVELOPMENT PLANFLOW MAZDA / VWFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FOR REV IEW FISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M 912 E. HIGH ST.CHARLOTTESVILLE VA, 22902LAND PLANNING - PROJECT MANAGEMENT434.227.5140JUSTIN@SHIMP-ENGINEERING.COMALBEMARLE COUNTY, VIRGINIA19.020FILE NO.REVISION:2019.04.15SUBMISSION:INITIAL SITE DEVELOPMENT PLANFLOW MAZDA / VWFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FOR REV IEW C2EXISTING & DEMO PLANSHEET C2 of C7300306090Scale: 1"=30' 389522331552534108273521NEW RETAINING WALLMAX HEIGHT 6'FFE: 367.5FFE: 363FISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M 912 E. HIGH ST.CHARLOTTESVILLE VA, 22902LAND PLANNING - PROJECT MANAGEMENT434.227.5140JUSTIN@SHIMP-ENGINEERING.COMALBEMARLE COUNTY, VIRGINIA19.020FILE NO.REVISION:2019.04.15SUBMISSION:INITIAL SITE DEVELOPMENT PLANFLOW MAZDA / VWFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FOR REV IEW C3SITE PLANSHEET C3 of C7200204080Scale: 1"=20' NEW RETAINING WALLMAX HEIGHT 6'FFE: 367.5FFE: 363FISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M 912 E. HIGH ST.CHARLOTTESVILLE VA, 22902LAND PLANNING - PROJECT MANAGEMENT434.227.5140JUSTIN@SHIMP-ENGINEERING.COMALBEMARLE COUNTY, VIRGINIA19.020FILE NO.REVISION:2019.04.15SUBMISSION:INITIAL SITE DEVELOPMENT PLANFLOW MAZDA / VWFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FOR REV IEW C4GRADING PLANSHEET C4 of C7 389522331552534108273521NEW RETAINING WALLMAX HEIGHT 6'FFE: 367.5FFE: 363FISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M 912 E. HIGH ST.CHARLOTTESVILLE VA, 22902LAND PLANNING - PROJECT MANAGEMENT434.227.5140JUSTIN@SHIMP-ENGINEERING.COMALBEMARLE COUNTY, VIRGINIA19.020FILE NO.REVISION:2019.04.15SUBMISSION:INITIAL SITE DEVELOPMENT PLANFLOW MAZDA / VWFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FOR REV IEW C5EASEMENT PLANSHEET C5 of C7No Mediumor Large TreesShrubs OnlyKEY 389522331552534108273521NEW RETAINING WALLMAX HEIGHT 6'FFE: 367.5FFE: 363LANDSCAPING REQUIRED:SITE REQUIREMENT (32.7.9.8): 10% CANOPY REQUIRED.SITE AREA 113,824 SF x 10%(0R .10) = 11,382 SFCANOPY REQUIRED: 11,382 SFCANOPY PROVIDED: WILL BE PROVIDED WITH FINAL SITE PLANPARKING LANDSCAPE (32.7.9.6): 10% OF PARKING PAVED AREA. 58,705 SF X .10 = 5,870.5 SFREQUIRED: 5,870.5 SF OF LANDSCAPED AREAPROVIDED: WILL BE PROVIDED WITH FINAL SITE PLANENTRY CORRIDOR:LARGE SHADE STREE (3.5" CAL.) - 35' O.C. WITH INTERSPERSED ORNAMENTALS (6' HT.).966 LF OF STREETSCAPE / 35 = 28REQUIRED: 28 LARGE SHADE TREES W/ VARIABLE ORNAMENTALSPROVIDED: DUE TO EXISTING TRANSMISSION POWER LINE, SANITARY, WATER, AND UNDERGROUNDTELEPHONE EASEMENTS PROVIDED ENTRY CORRIDOR PLANTING IS PREDOMINANTLY SMALLORNAMENTAL TREES AND EVERGREEN SHRUBS. 31 TREES WITH EVERGREEN SHRUBSFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M 912 E. HIGH ST.CHARLOTTESVILLE VA, 22902LAND PLANNING - PROJECT MANAGEMENT434.227.5140JUSTIN@SHIMP-ENGINEERING.COMALBEMARLE COUNTY, VIRGINIA19.020FILE NO.REVISION:2019.04.15SUBMISSION:INITIAL SITE DEVELOPMENT PLANFLOW MAZDA / VWFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FOR REV IEW C6LANDSCAPE PLANSHEET C6 of C7 ATLASPASSATATLASPASSATATLASATLASFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M 912 E. HIGH ST.CHARLOTTESVILLE VA, 22902LAND PLANNING - PROJECT MANAGEMENT434.227.5140JUSTIN@SHIMP-ENGINEERING.COMALBEMARLE COUNTY, VIRGINIA19.020FILE NO.REVISION:2019.04.15SUBMISSION:INITIAL SITE DEVELOPMENT PLANFLOW MAZDA / VWFISSEORPONALENGI R E EN AIVIROHFJUSTIN M. SHIMPLic. No. 45183NIGLAWO NETC O M M FOR REV IEW C7SITE DETAILSSHEET C7 of C7BOTTOM OF ROOT BALLRESTS ON EXISTING ORRECOMPACTED SOIL TOPREVENT SETTLINGROUND-TOPPED SOIL BERM4" HIGH X 8" WIDE ABOVEROOT BALL SURFACE SHALLBE CONSTRUCTED AROUNDTHE ROOT BALL. BERMSHALL BEGIN AT ROOTBALL PERIPHERY.ONE CENTRAL LEADER(NO CODOMINANT LEADERS,UNLESS SPECIFIED)SLOPE AND ROUGHEN SIDES OFLOOSENED SOIL.4" LAYER OF WOOD CHIPS. NO MORETHAN 1" OF MULCH ON TOP OFROOT BALL.TOP OF ROOT BALL SHALL BE2" ABOVE FINISHED GRADE3X ROOTBALL DIAMETER DIM.SET TRUNK PLUMB, SEEPLANS FOR EXACT LAYOUTAND SPACINGARBOR TIES, OR EQUIV.2"X2" SQ. OAK STAKESSET 180 DEGREES APARTOUTSIDE ROOT PACKAGEFINISHED GRADEEXISTING GRADEREMOVE BURLAP, STRING, ANDWIRE FROM TOP 2/3 OF ROOT BALL.5'2'C61C623" DOUBLE-SHREDDEDHARDWOOD MULCH.WATERING BERM2X ROOTBALL DIAMETER DIM.PULL POTTING MIX AND ROOT MATAPART TO DIRECT THE OUTER ROOTSINTO THE ADJACENT SOIL. DO NOTLEAVE CIRCLING ROOTSNATIVE BACKFILL SOIL AMENDEDWITH 15% DECOMPOSEDORGANIC COMPOSTPREPARE SUBSOIL TOWITH MOUND TOPREVENT SETTLINGTREE PIT DEPTH EQUALS ROOTBALLDEPTH. MEASURE BEFORE DIGGINGSHAPE SOIL SURFACE TO PROVIDE3' DIA. WATERING RINGSET TOP OF ROOT CROWN 2"ABOVE FINISHED GRADE1. SEE PLANS FOR EXACT LAYOUT. SPACE PLANTS AS SPECIFIED IN PLANT LIST OR AS SHOWN. IF SPACING NEEDS ADJUSTING CONTACT LANDSCAPE ARCHITECT.2. PRIOR TO MULCHING, LIGHTLY TAMP SOIL AROUND THE ROOT BALL IN 6" LIFTS TO BRACE SHRUB. DO NOT OVER COMPACT. WHEN THE PLANTING HOLE HAS BEEN BACKFILLED, POUR WATER AROUND THE ROOT BALL TO SETTLE THE SOIL.SOIL SURFACE ROUGHENEDTO BIND NEW SOILFINISHED GRADE 18 Scientific Na me: Amelanchier spp. (A. arborea, A. canadensis, A. laevis, and A. x grandiflora) Co mmo n Na me: Serviceberry Sp ecies and Hybrids, Tree Forms Environmental Conditions: Hardi ness Zone: 4 (3b) Soil Moisture: o ccasionally satura ted or v ery wet so il consistently moist, well d rained soil occasional period s of d ry so il p rolonged p eriods of d ry so il 1 2 3 4 5 6 7 8 9 10 11 12 Sun/Sha de: prefers full sun, tolerates partial shad e Salt: sensitive pH: < 7 .5 Other: poor heat toleran ce Insect/Disease Fa ctors: none limiting, foliage diseases can be a problem but are very rarely fatal , fireblight, mites, scales can be serious problems if site requirements not met , ‘Autumn Brilliance’ and ‘Princess Diana’ resistant to leaf spot, ‘Autumn Brilliance’ report edly somewh at fireblight tolerant Gro wth Characteristics: Height: 20’-30 ’ Width: 15’-25’ Form/Habit: oval, multi-stem or single-stem fo rms av ailable, must specify tree form as Amelanchier is also gro wn as a large shrub Rate: mediu m Orna mental Cha racteristics: Flo wer: white erect or pendulous clusters (dep ending on species or hybrid), in spring as leaves emerge or after (depending on species or hybrid), almo st always showy Fruit: edible reddish-purple to black b erries Seasonal Foliage Color: varies with cultivar, g ray-green to dark green in summer, yellow to red in fall, reliably good fall color reg ardless of culitvar Bark: attractive, s mooth gray streaked with dark er lon gitudinal fissures, becoming ridged, furro wed and scaly with extreme age Trans plant Issues: easy to transplant B&B or < 2” cali per bare root Ma nagement Issues: rootstock suckering possible on s ome cultivars, typically Sorbus is used fo r rootstock, although Tra dition® h as Crateagus rootstock which could produce thorny suck ers Suggested Uses: n arro w or wide street tree lawns/pits, parks Cultivars (Tree fo rms only): see ch art on following p age ‘Cumulus’ 19 Amelanchier spp. (Serviceberry Species a nd Hy brids) Tree Form Cultivars : Growth Characteristics Orna menta l Characteristics Other Cultivar if differs from previous page ‘Autumn Brilliance’ heavy flow ering, lustrous dark green summer foliage, brigh t orange to red in fall excellent heat and drought tolerance for sp ecies ‘Cole’s Select’ 15’ wide thick er and glossier small green fo liage, orange-red to red in fall ‘Cumulus’ 12’-18’ wide, faster growing yellow to orange-scarlet fall co lor may su cker at root collar Forest Prince heavy flow ering, leathery d ark green foliag e, orange-red fall color Lustre® ‘Rogers’ upright, open form flower clusters droop, leaves emerge purplish-bronze in color, orange-red fall co lor ‘Princess D iana’ green foliag e, bright red in fall, reported ly early and long lasting fall color may be difficu lt to find in tree form ‘Robin Hill’ 12’-15’ wide pink buds, early bloomer, bronze-tinged green foliag e, y ellow to red in fall ‘Snowcloud’ 15’ wide, open habit foliag e reportedly emerges w ith red tin t, blue-green to d ark green in summer, copper-orange to scarlet in fall Spring Flurry® ‘JFS-Arb’ 35’ tall, upright oval, strong central leader green foliag e in summer, orange fall color Spring Glory® ‘Spirzam’ 10’-15’ tall, 8-10’ wide gray-green foliag e, amb er-orange fall color Tradition® ‘Traza m’ strong central leader, good branching habit heavy fruiting, gray-green foliage, orange and red fall color 74 Scientific Na me: Gl editsia triacanthos var. inermis Co mmo n Na me: Tho rnless Co mmon Honeylocust Environmental Conditions: Hardi ness Zone: 4b (selected cultivars into 4a and 3b) Soil Moisture: o ccasionally satura ted or v ery wet so il consistently moist, well d rained soil occasional period s of d ry so il p rolonged p eriods of d ry so il 1 2 3 4 5 6 7 8 9 10 11 12 Sun/Sha de: full sun Salt: so me observed toleran ce pH: < 8 .2 Insect/Disease Fa ctors: over-planting has encouraged severe insect problems in many areas , including spider mite borers, leaf spot, cankers , po wdery mildew, wiches’ b room, Honeylocust plant bug (‘Moraine’ and Skyline® have shown some resistance, green-l eaved strains more tolerant such as Shademaster®, yellow-leaved strains very susceptible such as Sunburst®), mimosa web wo rm (‘Moraine’ resistant, ‘Green Glory ’ moderately resistant, I mperial® very susceptible), Thyronectria canker (Hal ka™ resistant, I mperial®, Shademaster®, Skyline®, and Trueshade® p artially resistant, ‘Morraine’, Skyline® and Sunburst® susceptible), an d Nectria canker (Sunburst® susceptible) Gro wth Characteristics: Height: 40’-80 ’ Width: 30’-70’ Form/Habit: oval to rounded, op en, spreading Rate: fast Orna mental Cha racteristics: Flo wer: inconspicuous, not orn amentally important Fruit: long bro wn pods, most cultivars h ave little to no fruit Seasonal Foliage Color: light green in summer (dark g reen cultivars available), yello w in fall Bark: attractive, d ark gray-bro wn , develops s caly platy ridges and deep furro ws with age Other: drops leav es early Trans plant Issues: easy to transplant B&B or < 2” cali per bare root Ma nagement Issues: s mall leaves easy for fall clean-u p Suggested Uses: n arro w or wide street tree lawns/pits, parks, suitable fo r CU-Stru ctural Soil™ Cultivars (all typically less than 50’ high): Halka ™ (‘Christie’, zone 4a (3b), full branching, dev elops heavier caliper at an early age, essentially fruitless), ‘Moraine’ (zone 3b, d enser than species , upper branches ascending, lo wer branches more pendulous, d ark green su mmer foliage, golden yellow fall color, fruitless form, reportedly susceptible to storm damage), Sha demaster® (‘PNI 2835’, zone 3b , high vase shaped canopy, dark green summer foliage, late to turn yellow-green in fall, essentially fruitless), Skyline® (‘Sky cole’, zone 3b, up right, broadly pyrami dal, strong central lead er, tight upright branching, dark green summer foliage, good y ellow fall color), Spectrum™ , (‘Speczem’, rounded form, foliage has bright golden-yellow tips, essentially fruitless), True Shade® (fast gro wing, shiny dark bark, essentially fruitless) *Avoid ‘Rubylace’ and Sunburst® (‘Suncole’) 27 Scientific Na me: Gl editsia triacanthos var. inermis ‘Impcole’ Co mmo n Na me: Imp erial® Thornless Common Honeylocust Environmental Conditions: Hardi ness Zone: 4a (3b) Soil Moisture: o ccasionally satura ted or v ery wet so il consistently moist, well d rained soil occasional period s of d ry so il p rolonged p eriods of d ry so il 1 2 3 4 5 6 7 8 9 10 11 12 Sun/Sha de: full sun Salt: so me observed toleran ce pH: < 8 .2 Insect/Disease Fa ctors: over-planting of the species has encourag ed severe insect problems in many areas , including spider mite borers, leaf spot, cankers, p owdery mildew, wich es’ broo m, Honeylocust plant bug, mi mosa web worm (I mperial® very susceptible), Thyronectria canker (I mperial®, partially resistant), and Nectria cank er Gro wth Characteristics: Height: 30’-35 ’ Width: 35’ Form/Habit: broadly rounded, op en and spreading, good horizontal branching angles Rate: fast Orna mental Cha racteristics: Flo wer: inconspicuous, not orn amentally important Fruit: essentially fruitless Seasonal Foliage Color: medium g reen in summer, y ellow in fall Bark: attractive, d ark gray-bro wn , develops s caly platy ridges and deep furro ws with age Other: species generally drops leaves early Trans plant Issues: easy to transplant B&B or < 2” cali per bare root Ma nagement Issues: s mall leaves easy for fall clean-u p Suggested Uses: n arro w or wide street tree lawns/pits, parks, suitable fo r CU-Stru ctural Soil™ Cultivars: above info is cultivar specific, other G. triacnathos cultivars are large trees 110 Scientific Na me: Ul mus parvifolia Co mmo n Na me: Chinese Elm o r Lacebark Elm Environmental Conditions: Hardi ness Zone: 5b Soil Moisture: o ccasionally satura ted or v ery wet so il consistently moist, well d rained soil occasional period s of d ry so il p rolonged p eriods of d ry so il 1 2 3 4 5 6 7 8 9 10 11 12 Sun/Sha de: full sun Salt: so me observed toleran ce pH: < 8 .2 Insect/Disease Fa ctors: species sho ws reliably good resistance to Dutch el m diseas e, elm yellows , and elm leaf b eetle, as well as Jap anese beetle Gro wth Characteristics: Height: 40’-75 ’ Width: 30’-75’ Form/Habit: variable, rounded or vase-shap ed, o ften with pendulous bran chlets, some almost American Elm-like with upright-spreading branches, while others are broad er than tall with broad-spreading branches Rate: mediu m to fast Orna mental Cha racteristics: Flo wer: not orn amentally important, inconspicuous, late summer to early fall Fruit: 1/3” disc-like samara, ripens in fall Seasonal Foliage Color: lustrous dark green in summer, color varies in fall, yellow to reddish purple Bark: extremely ornamental, exfoliates and mottles in combinations of gray, g reen , orange, and brown , often with burnt orange corky lenticles Trans plant Issues: transplant B&B Ma nagement Issues: none of significance Suggested Uses: n arro w or wide street tree lawns/pits, parks, suitable fo r CU-Stru ctural Soil™ Cultivars: New cultivars selected for various ornamental characteristics and/or cold hardiness are beco ming increasingly available. The following newer cultivars are hardy to Zone 5 and currently available: ‘Dynasty ’ (early introduction, so readily available cultivar, upright vase-shaped, 50’ high, 45’ wide, dull orange to red fall color but bark extremely inferior to following cultivars and often not even considered ornamental), Allee® (‘Emerald Vase’ or ‘Emer II’, upright-spreading form, 70’ high, 60’ wide, dense canopy , trunk irregularly fluted, excellent bark pattern – ev en on surface roots and 1”-2” diameter bran ches, bark h as burnt orange corky lenticel s, subdued yello w fall color), Athena® (‘Emerald Isle’ of ‘Emer I’, broad-spreading habit, ro unded/globe-shaped, 40’ high, 55’ wid e, d ense canopy, excellent bark pattern begins 2’ o ff the ground, bark h as burnt orange corky lenticels, leathery foliage, very dark green-al most black-in su mmer, bronze-bro wn in fall), Bosque® (‘UPMTF’, listed as zone 6, narro w cro wn, 30 ’wide, foliage is fine-textured and s maller than species , multi-color exfoliating bark), ‘Ohio’ (moderately vas e-shaped , probably 40’-5 0’ high, 35’-45’ wide, perh aps larger, appears more loose and op en, attractive g ray-orange ex foliating bark, smaller leaves, grass green su mmer foliage, grayish-red fall color, fruit ripens red-purple color), ‘Pathfinder’ (v ase-shaped , probably 35 ’-45’ high, 30’-40’ wide, perh aps larger, sometimes strong central leader, bark likely similar to ‘Ohio’, y ellow-g reen leaves in summer, grayish-red in fall, fruit ripens red-p urple color), *Three cultivars selected for cold hardiness (possibly into zone 4) that ma y beco me mor e available in the near future: ‘Halleluja h’ (fast growing, excellent foliage and bark detail), ‘Matthew’ (upright vase-shape, strong branches, bark exfoliates at early age), and ‘Zettler’ (strong, upright h abit, excellent branching structure) 89 Scientific Na me: Qu ercus co ccinea Co mmo n Na me: Scarlet Oak Environmental Conditions: Hardi ness Zone: 5a Soil Moisture: o ccasionally satura ted or v ery wet so il consistently moist, well d rained soil occasional period s of d ry so il p rolonged p eriods of d ry so il 1 2 3 4 5 6 7 8 9 10 11 12 Sun/Sha de: full sun Salt: unkno wn pH: < 7 .5 Insect/Disease Fa ctors: none serious or limiting Gro wth Characteristics: Height: 60’-70 ’ (can reach 100’+ in wild) Width: 40’-50’ Form/Habit: round, open Rate: slo w Orna mental Cha racteristics: Flo wer: catkins, spring as leaves emerge Fruit: acorn Seasonal Foliage Color: glossy dark green in summer, russet-red to brilliant scarlet in fall, lat e to turn color in fall Bark: gray-bro wn Other: leaves persist throughout winter, p articularly on young trees Trans plant Issues: difficult to transplant B&B or bare root Ma nagement Issues: acorns may be a litter problem certain years Suggested Uses: wide street tree lawns/pits or parks p referred due to size Cultivars: none available 60 Scientific Na me: Carpinus betulus Co mmo n Na me: Eu ropean Ho rnbeam Environmental Conditions: Hardi ness Zone: 5a (4) Soil Moisture: o ccasionally satura ted or v ery wet so il consistently moist, well d rained soil occasional period s of d ry so il p rolonged p eriods of d ry so il 1 2 3 4 5 6 7 8 9 10 11 12 Sun/Sha de: full sun Salt: sensitive pH: < 8 .2 Insect/Disease Fa ctors: none serious or limiting, leaf minor possible, t wo-lined ch estnut borer sometimes attacks ‘Fastigiata’ Gro wth Characteristics: Height: 40’-60 ’ Width: 30’-40’ Form/Habit: pyramidal to rounded in youth, oval to ro unded at maturity, fine textured b ranch es, low branching tendency typically creates short trunk Rate: slo w to mediu m Orna mental Cha racteristics: Flo wer: catkins with light-green bracts, spring Fruit: small green-bro wn nutlets at base of leafy flo wer bracts in pendulous clusters, mature in fall Seasonal Foliage Color: dark green in summer, yellow to yellow-green in fall, fall color is often late Bark: attractive, s mooth slate-gray Trans plant Issues: difficult to transplant B&B or bare root, somewh at slo w to establish Ma nagement Issues: typically lo w b ranched , may req uire pruning to be used as street tree, tolerates heavy pruning, dieb ack can b e a minor problem, n arro w branch angles on columnar forms may be problem with heavy sno w/ice loads Suggested Uses: wide street tree lawns/pits, narro w tree lawns/pits with pruning, parks, suitable for CU- Structural Soil™, column ar forms useful for screening or hedging Cultivars: ‘Fastigiata’ (35’-40’ high, 20’-30’ wide, narro wly conical b eco ming broadly oval-vas e shaped with age, very dense bran ching), ‘Columna ris’ (another up ward branching and compact cro wn form commonly confus ed with ‘Fastigiata’ in the nursery trade, theoretically ‘Colu mnaris’ d evelops a central leader and ‘Fastigata’ does not), ‘Pyra mi dalis’ (just another name given to ‘Fastigiata’ and ‘Columnaris’ forms), ‘Franz Fontai ne’ (35’-40’ high, 15’ wide, narro west form available, maintains narro w-colu mnar form with ag e as currant season’s gro wth curves in ward to ward central leader) ‘Fastigiata’ Street Ecology: Street Trees Tree Belt & Green Belt Typologies Downtown Street Design Standards DRAFT November 2017 City of Burlington 163 Broad Green Belt This condition currently hosts trees planted along some of the busiest streets and widest sidewalk setbacks in Burlington. As deemed appropriate by the City Arborist, this condition may remain in selected areas in order to preserve large, healthy trees. However, this condition is prone to compaction and erosion in areas with adjacent on-street parking and/or high levels of pedestrian activity. This condition should be replaced with the standard tree belt as blocks are redeveloped when trees are in struggling condition or where preservation of the existing green belt is infeasible. Where these green belts are more than 8' wide, large, open soil volumes are often sufficient to support trees which survive to produce large canopies. Soil cells may be used beneath pavements if necessary to provide required soil volumes to new trees. Small, medium, and large tree species are suitable for planting in these conditions. Standard Green Belt This is the historic green belt condition in downtown. However, this condition is only desirable on primarily residential streets with low foot traffic and on blocks with slopes of less than 5%. Therefore, this condition may remain in selected areas as indicated in the Proposed Tree Belt Condition diagram. In order to protect against compaction and erosion that can damage roots and turf, an 18" "carriage walk" should be installed along the curb line within the green belt where possible. Soil cells may be utilized beneath pavements if needed to provide required soil volumes for new trees. Otherwise, horticultural soils should be used in unpaved portions of the green belt at a minimum depth of 36". Small, medium, and large tree species are suitable for planting in these conditions. Narrow Tree Belt This tree belt type exists where a narrow ROW accommodates only a slender green belt. In the future, this condition is only appropriate on primarily residential streets with low pedestrian traffic and where there is already a narrow/substandard green belt. In this condition, soil volumes in the green belt alone are insufficient to support trees which survive to produce large tree canopies. Soil cells or root trenches shall be used underneath pavement to provide required soil volumes for new trees. Only small tree species are appropriate for planting in these conditions. Public Sidewalk Mulched Tree Well Horticultural Soil Standard green belt condition with an 18" "carriage walk" adjacent to the curb to protect tree roots and turf from erosion from adjacent on-street parking. Soil Cell Urban Lawn Mix Carriage Walk Public Sidewalk Mulched Tree Well Horticultural Soil Soil Cell Urban Lawn Mix Public Sidewalk Mulched Tree Well Horticultural Soil Urban Lawn Mix Broad green belt condition with 8'+ of turf between the curb and sidewalk. Narrow green belt condition with soil cells to support small tree species. Street Ecology: Street Trees Tree Planting Details Downtown Street Design Standards DRAFT November 2017 City of Burlington 167 Tree planting detail for trees installed tree belts with tree wells.Gravel Drainage Layer Soil Cell Root Barrier Structural Soil Granite Curb Horticultural Soil Soil Drainage PipeIrrigation/Aeration System Tree Fence 6’ min. Root Barrier Setting Mound Tree Anchor 3’ min.TREE PLANTING AT TREE WELL Trees planted within green belts shall follow all "Tree Installation Guidelines" on page 164, as well as these additional details. Groundcover • Plant Groundcover to cover the soils beyond the rootball. • Select Groundcover species from the recommended list in this document. Mulch • Option: Mulch at a 2” depth to cover entire soil surface within tree well. • Weed prevention fabrics and geotextiles are not permitted. Reference See "Tree Well Curb & Fence Details" on page 168. Street Ecology: Street Trees Tree Protection Downtown Street Design Standards DRAFT November 2017 City of Burlington 173 HORTICULTURAL SOIL Intent: To provide trees, turf, and groundcover plantings with a soil that allows them to thrive and to live out their longest possible healthy life in urban conditions. Location: Horticultural soils will fill the entire area of the tree well at a 3’ minimum depth. These soils will also be used in soil cells and will provide the top 18” of the soil profile in turf Treebelts. Horticultural Soil is not intended for use in Bio-retention Plantings. Design: Consult a soils scientist or a licensed landscape architect, horticulturist, or arborist when designing Horticultural Soils to meet site and plant specific needs. Materials: Horticultural Soil is a fertile, friable, loamy topsoil mix suitable for the support of vegetative growth. Horticultural Soil Components: Topsoil, Organics, Coarse Sand, Fertilizer, and Biological Amendments • Topsoil: Unscreened Imported Topsoil or Existing Site Soil −Soil Texture: USDA loam, sandy clay loam, or sandy loam. −Soil Structure: Retain Peds of min 2” in size prior to mixing. −Organic Matter & Soil Chemistry: Suitable for growing the plants specified at the designed location −Soil Objects: < 5% of total topsoil volume: Clumps of Clay; Debris; Refuse; Roots; Stones; Sticks; Brush; or other litter. Remove all soil −objects >8” in their longest dimension. −Contaminants. The soil should have no herbicides, heavy metals, biological toxins, or hydrocarbons that will impact plant growth or are at levels exceeding the EPA’s standards for soil contaminants. −Source: Unscreened Imported Topsoil must be harvested within 50 miles of Burlington, Vermont. Unscreened Imported Topsoil may not contain soils from sources defined by the United States Natural Resources Conservation Service as prime farmland, unique farmland, or farmland of statewide or local importance. • Organics: Compost shall be commercially prepared Pine Fines or an equivalent compost and must meet US Compost Council STA/TMECC criteria for “Compost as a Landscape Backfill Mix Component” and must not be derived from human waste or animal waste sources. • Coarse Sand: Clean, washed, natural sand, free of toxic materials, limestone, salt, shale, and slate particles. Must meet ASTM-C33 Standards. • Fertilizer: If noted by soil test recommendations, add slow-release, organic fertilizer based on soil test and plant requirements. • Biological Amendments: Amendments such as Mycorrhizal additives, compost tea or other products intended to change the soil biology, as required based on Soil Foodweb Analysis by a qualified soil testing lab. Horticultural Soil Mix Requirements: Blend Topsoil, Organics, Coarse Sand, Fertilizer & Biological Amendments to make a new soil that meets the Project goals for the indicated planting area. • Clay content: 15-25% by weight • Organic matter: 5-10% by weight • Coarse Sand: 30-65% by weight • Silt: 15-25% by weight • Gravel content shall not exceed 10% by weight • Soluble Salt: < 2 dS/m • Cation Exchange Capacity: 7-15 • Water Permeability: 1-2 inches per hour when compacted to 85% of maximum dry density • pH: 6.0-6.5 • At the time of soil installation, add fertilizer or biological amendments, if required, to the planting soil mix at rates recommended by soil testing results for the plants to be grown. Depth: 3–4’ (18” in turf-only areas of tree-belts where tree rooting volume is not required). SOIL CELLS Intent: Soil Cells provide most the required soil volume for each tree downtown. These systems protect tree rooting soil from compaction while allowing pavement, vehicular access, and other streetscape uses above. Location: The primary location for these systems will be beneath permeable pavement in the Treebelt. These systems may also extend beneath the Concrete Sidewalk, Paved Bike Lanes, and in the Step-off zone. In residential areas, there the tree-belt is planted in turf Systems: Three systems are approved: • Silva Cells: manufactured by DeepRoot • StrataVault: manufactured by GreenBlue Urban • StrataCell: manufactured by GreenBlue Urban Loading: Soil Cells must be designed to accommodate H-20 loading for all pavements that they support. Soil Type: Install Horticultural Soils in Soil Cells. Horticultural Soil Mix Requirements may be modified to meet manufacturer’s specifications. Tree Protection Street Ecology: Street Trees 174 City of Burlington DRAFT November 2017 Downtown Street Design Standards Installation: Per Manufacturer specification to accommodate paving and streetscape furnishings above as well as tree grate or curb/fence. CU-STRUCTURAL SOIL ™ Intent: CU Structural Soil is a less-costly, but less-efficient method of providing rooting space for street trees beneath pavements as compared to Soil Cell systems. Materials: CU Structural Soil is a patented mixture of crushed stone, clay loam and Hydrogel developed by Cornell University. (Patent #5,849,069) Installation: Install per “CU-Structural Soil® A Comprehensive Guide” as published by Cornell University: http://www.hort. cornell.edu/uhi/outreach/pdfs/CU-Structural%20Soil%20-%20 A%20Comprehensive%20Guide.pdf Efficiency: The Smiley-Bartlett Field Study suggests that a cubic foot of CU Structural Soil is capable of supporting 20% as much mature tree canopy volume as uncompacted Horticultural Soil. Use: In areas where soil cells cannot be used because of utilities or other underground impediments, CU Structural Soil may be used to provide no more than 10% of the required soil volume for each tree. CU Structural Soil may also be used to provide root paths beneath paved areas. Root paths provide access to nearby soils suitable for supporting tree growth that would otherwise be made inaccessible by compacted subsoils beneath paved areas. Source: CU-Structural Soil has been patented and licensed to qualified producers to ensure quality control; its trademarked names are CU-Structural Soil® or CU-Soil®. Obtain CU-Structural Soils an Amereq-licensed company. This assures that the material has been produced and tested to meet research-based specifications. DRAINAGE & ROOT AERATION Intent: To prevent subgrade moisture oversaturation and provide subsurface aeration in areas of tree planting. Material: Linear perforated subsoil drains which connect to the city’s storm/combined sewer system. Operability: Valves that can cut off drainage to the city sewer systems must be installed at each connection to the sewer system. Valves will be installed in the “off” position. Alternatively, drains may be installed without valves, at a higher elevation in the soil profile as agreed upon with the Burlington Water Resources Department. This overflow system will drain automatically when saturation reaches a designed level. PVC check-wells must be installed to monitor subgrade moisture at each street tree. Location: Underdrainage must be installed beneath all new street trees, regardless of the pre-construction infiltration rate of site soils. Drains must be installed in tree-belts beneath permeable pavements, tree wells, turf Treebelts, Soil Cells, and Sand Based Structural Soils. Performance: Underdrains must allow saturated soils to drain by gravity to a moisture level that can support the growth of street trees. SUBGRADE On sites where water infiltration is appropriate beneath planting soils: Prior to installing planting soil, loosen grade below the installed planting sol to a depth of 18 inches below the sub grade elevation in areas that are compacted and do not easily drain. Locate and avoid disturbing any existing utility lines or other subgrade structures. Percolation tests shall be performed to confirm minimum percolation rates of 1–2 inches per hour. On sites where water infiltration is inappropriate, provide impermeable liners and drainage pipes to drain all subsoil water into the sewer system while maintaining adequate moisture levels to support healthy plants. Street Ecology: Street Trees Tree Belt & Green Belt Typologies Downtown Street Design Standards City of Burlington 179 Permeable Pavers Permeable Pavers Tree Grate & Guard Soil Cell Horticultural Soil Planted Tree Well Soil Cell Horticultural Soil 8' Wide Brick Tree Belts Tree Belt with Planted Tree Wells This should be applied in commercial and mixed use areas with moderate pedestrian activity and where the preferred dimensions for the Pedestrian Zone for cross sections can be met. This may be installed adjacent to a Buffer Zone or a Protected Bike Facility at the sidewalk grade, such as the western blocks of Main Street. Trees in this condition are surrounded by salt-resilient plantings in a bed that infiltrates stormwater. Tree wells are typically 16' long, and are framed by 6” wide granite curbs on the sides parallel to the street with metal tree fencing on the perpendicular sides. Only large tree species are appropriate in this condition. See additional tree planting details in "Tree Planting at Tree Well" on page 185. Tree Belt with Tree Grate This should be applied in commercial and mixed use areas with moderate to high pedestrian activity, frequent restaurant/ retail destinations, and adjacent to loading zones. This may also be used for street types with a preferred Tree Belt/Furnishing Zone dimension of 8', but where the preferred or minimum dimensions for other Pedestrian Zone elements cannot be met due to encroachments or other constraints. This may be installed adjacent to a Buffer Zone or a Protected Bike Facility at the sidewalk grade, such as the block of Main Street adjacent to City Hall Park. Tree roots in this condition are protected by tree grates, and tree trunks by tree guards. Tree grates are typically 16' long, and flush with other pavements. Only large tree species are appropriate in this condition. See additional tree planting details in "Tree Planting at Tree Grate" on page 184. 8' wide tree belt utilizing permeable pavers and planted tree wells. 8' wide tree belt utilizing permeable pavers and tree grates and guards. Tree Planting Details Street Ecology: Street Trees 184 City of Burlington Downtown Street Design Standards TREE PLANTING AT TREE GRATE Trees planted within green belts shall follow all "Tree Installation Guidelines" on page 182, as well as these additional details. Soils • Soils are depressed 3" below the adjacent pavement grade, and 4–6" below the underside of the tree grate. Tree Anchor • Anchor to tree guard. Tree Guard • Install Tree Guards for all trees planted in tree grate condition. • Adjust guard in accordance with tree growth to avoid metal coming in contact with bark. Remove at the discretion of the City Arborist, when caliper is of sufficient size. Tree Grate • Tree Grate width must match Tree Belt/Furnishing Zone width. • Tree grate minimum length is twice the tree grate width. (6' x 12’, 8' x 16’, etc.) • Tree grate openings must be expanded over time to accommodate the tree’s trunk without scarring it. • Tree grate shall be level with sidewalk per ADA requirements. Groundcover • Option: plant Sedum Blend listed in this document to cover soil surface under grate. Mulch • Mulch at a 2” depth to cover entire soil surface under grate. • Bare soil should be left at the base of the tree to avoid trunk suffocation or rot. • Weed prevention fabrics and geotextiles are not permitted. Gravel Drainage Layer Soil Cell Root Barrier Structural Soil Tree Guard Tree Grate Horticultural SoilRoot Barrier Soil Drainage Pipe Setting Mound 3’ min.6’ min. Tree planting detail for trees installed tree belts with tree grates and guards. Irrigation / Aeration System Bedding course: 2" thick typ. Edge restraint: concrete pavement or granite curb Structural soil or compacted fill dirt Utilities / Conduit Street Ecology: Street Trees Tree & Plant Species Downtown Street Design Standards DRAFT November 2017 City of Burlington 187 MEDIUM TREES Gleditsia triacanthos v. inermis Halka Honeylocust Gleditsia triacanthos v. inermis Imperial Honeylocust Gleditsia triacanthos v. inermis Skyline Honeylocust Height: 30–40’ Spread: 30–40’ Required Soil Volume: 1000 ft3 Planting Condition: Brick Treebelt, Broad Treebelt, Turf Treebelt, Narrow Treebelt, Lawn Salt Tolerance: Good VT Native: Yes Notes: Halka is a nearly fruitless, thornless Honeylocust cultivar. Height: 25–30’ Spread: 30–35’ Required Soil Volume: 1000 ft3 Planting Condition: Brick Treebelt, Broad Treebelt, Turf Treebelt, Narrow Treebelt, Lawn Salt Tolerance: Good VT Native: Yes Notes: Imperial is a nearly fruitless, thornless Honeylocust cultivar. It is one of the most compact Honeylocusts. Height: 35–45’ Spread: 30–35’ Required Soil Volume: 1000 ft3 Planting Condition: Brick Treebelt, Broad Treebelt, Turf Treebelt, Narrow Treebelt, Lawn Salt Tolerance: Good VT Native: Yes Notes: Skyline has a somewhat pyramidal form. It is a thornless and nearly fruitless Honeylocust cultivar. Street Ecology: Street Trees Tree & Plant Species Downtown Street Design Standards DRAFT November 2017 City of Burlington 189 Acer truncatum 'Main Street’ Shantung Maple Amelanchier arborea Downy Serviceberry Amelanchier laevis sp. Allegheny Servicebery Height: 20–25’ Spread: 20–30’ Required Soil Volume: 600 ft3 Planting Condition: Brick Treebelt, Broad Treebelt, Turf Treebelt, Narrow Treebelt, Lawn Salt Tolerance: Moderate VT Native: No Notes: Good under power lines. Compact, somewhat low-branched street tree. Height: 15–25’ Spread: 15–25’ Required Soil Volume: 600 ft3 Planting Condition: Broad Treebelt, Turf Treebelt, Lawn Salt Tolerance: Moderate VT Native: Yes Notes: ‘Spring Flurry’ cultivar is recommended for its fastigiate form. Good under power lines in residential areas. Avoid areas of high soil compaction. Height: 15-25’ Spread: 15-25’ Required Soil Volume: 600 ft3 Planting Condition: Broad Treebelt, Turf Treebelt, Lawn Salt Tolerance: Moderate VT Native: Yes Notes: ‘Snowcloud’ and ‘Majestic’ cultivars are recommended for their form and vigor. Good under power lines in residential areas. Avoid areas of high soil compaction. SMALL TREES Roadway Zone Street Ecology: Stormwater 206 City of Burlington DRAFT November 2017 Downtown Street Design Standards PERVIOUS PAVERS IN PARKING ZONE (PILOT) Parking zones are excellent applications for interlocking concrete pervious paver systems. Many interlocking concrete unit pavers are designed specifically for stormwater management applications. They allow water to pass through joint gaps that are filled with small aggregates and infiltrate into a thick gravel subgrade. This system is widely applicable to both small and large paving applications and it offers the flexibility to be repaired because small sections can be removed and replaced. Interlocking concrete unit pavers offer flexibility in color, style, joint configuration, and paving pattern. It is important to note that selected pervious joint pavers along pedestrian areas must be ADA-compliant and not cause tripping hazards. When installing pervious joint pavers, care should be taken to assure that the base and subgrade is properly constructed to minimize the potential for differential settlement. Regular vacuum cleaning of the paver joints will help prevent clogging and extend the longevity of the system. Pervious paving within the parking zones of streets can be combined with other curb zone landscape stormwater treatments such as stormwater curb extensions and green gutters to maximize the potential for stormwater management. Key Design Considerations This treatment should be piloted in alleys or on low volume streets before applying this treatment broadly throughout downtown. This treatment may only be applied in consultation with the Department of Public Works until such time it is no longer indicated as a pilot in these standards. Vehicle Loading Requirements Pervious paving systems need to maintain H20 vehicle loading capability. Maximum Gap Between Pavers A ½” maximum gap is to be maintained between pavers to be ADA compliant. A 1/4" gap is preferred where pedestrians will traverse. Minimum Gravel Sub-base Depth A 12” minimum gravel sub-base is necessary under parking zone pervious paving systems. Banding required as is show in the photos? A urban street with interlocking concrete pavers within the parking zone and tree belt zone. A residential street with interlocking concrete pavers within the parking zone. Interlocking concrete pavers Compacted subgrade Base course Sand setting bed Street Ecology: Stormwater Pedestrian Zone Downtown Street Design Standards DRAFT November 2017 City of Burlington 207 Pedestrian Zone PERVIOUS PAVERS IN TREEBELT ZONE Sidewalk tree belt zones on urban streets are excellent applications for interlocking concrete pervious paver systems. Many interlocking concrete unit pavers are designed specifically for stormwater management applications. They allow water to pass through joint gaps that are filled with small aggregates and infiltrate into a thick gravel subgrade. This system is widely applicable to both small and large paving applications and it offers the flexibility to be repaired because small sections can be removed and replaced. Interlocking concrete unit pavers offer flexibility in color, style, joint configuration, and paving pattern. Along streets that utilize salt in winter conditions, only clay pavers should be used. It is important to note that selected pervious joint pavers along pedestrian areas must be ADA-compliant and not cause tripping hazards. When installing interlocking concrete pavers, care should be taken to assure that the base and subgrade is properly constructed to minimize the potential for differential settlement. It is important to design the pervious paver system sub-base to allow for the infiltration of stormwater, but also be able to consistently support the weight of occasional emergency and/or heavy duty utility vehicles traversing its surface and not allow pavers to buckle over time. Regular vacuum cleaning of the paver joints will help prevent clogging and extend the longevity of the system. In addition, periodic replenishment of the joints with fill sand/stones will help maintain structural stability over time. Pervious paving within the tree belt zones of streets can be combined with other sidewalk landscape stormwater treatments such as stormwater planters and tree grate stormwater planters to maximize the potential for stormwater management. Key Design Considerations Vehicle Loading Requirements Pervious paving systems need to maintain H20 vehicle loading capability. Maximum Gap Between Pavers A 1/4" gap is preferred where pedestrians will traverse. A ½” maximum gap is to be maintained between pavers to be ADA compliant. Minimum Gravel Sub-base Depth A 12” minimum gravel sub-base is necessary under parking zone pervious paving systems. Compact base material to allow for enough structural support, but to also allow for infiltration. Pervious brick pavers in the tree belt zone on S. Winooski Ave. This example accepts sheet flow from non-pervious sidewalks. A urban street with a centralized tree belt zone with granite pavers separated by 1/2” wide joints to capture stormwater runoff.