HomeMy WebLinkAboutSUB201500149 Review Comments Road Plan and Comps. 2015-10-16�pF A
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COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902 -4596
Phone (434) 296 -5832 Fax (434) 972 -4126
Project:
Avinity Estates
Project Number:
SUB201500149
Plat preparer:
Scott Collins; Collins Engineering [200 Garrett St., Suite K,
Charlottesville, VA 22902, scott(a-,collins -en ing eering com]
Owner or rep.:
Avon Properties LLC, P. O. Box 1467, Charlottesville, VA 22902
Plan received date:
25 Aug 2015
Date of comments:
16 Oct 2015
Reviewer:
John Anderson
A. Road Plan (SUB201500149)
1. Title p. — Delete SWM general note reference to upland rain gardens. Reference dry swales. Please
reference Avinity Estates, rather than Avinity Il.
Sheet 3:
2. Revise Emergency Access roadway to provide radius at Scottsville Road.
3. Provide details for: Emergency Access bollards, pedestrian crosswalk striping, or note to provide details for
crosswalk striping.
4. Show /label private SWM easement for Level 1 filter strip below bioretention basin `B' near Rt. 20.
5. Show /label BMP Access easement /private SWM easement for bioretention basin `B' near Rt. 20
6. Show /label private SWM easements for proposed swales adjacent to lots 37 and 10.
7. Show /label private SWM easement for BMP located north of Degraw Street.
8. Show /provide /label:
a. All traffic control signs, incl. No Parking
b. Sight distance lines
c. Curb ramps
d. Street signs
e. Curve data
f. Road stationing
* transfer horizontal curve data from sheet 9
9. Revise Moffet Street to Moffet Court.
10. Emergency Access appears to cross PL at corner of adjacent parcel; please revise if necessary.
11. Provide barrier between clubhouse facility/Active recreational area and BMP north of Degraw Street.
12. To the extent Avinity Loop/Degraw roundabout features are unbuilt (if built, disregard), provide complete
plan/profile pavement detail including fixed/variable width of all travel lanes, including merge to Avinity
Loop, approach to roundabout, roundabout center radius, roundabout paved width, curb radii, travel lane
radii, walks, width at 5 -space parallel and 7 -space perpendicular parking on Avinity Loop, etc. Provide
profile for all roadway sections included with Avinity Estates.
13. Sheet 5 — Provide (flow) arrows for storm system pipes.
14. Sheet 5 —Str. 2 conflicts with EP, Emergency Access. Revise.
15. Sheet 5 —Label all pipes.
Engineering Review Comments
Page 2 of 3
16. Sheet 6 - Provide VDOT inlet shaping, safety slab typical details.
Sheet 7:
17. Provide cross sections. Note beneath typical private street section that widths shall be in accordance with
county and ACF &R standards to allow adequate width travelway and parking on one side of the road is a
prerequisite to design, a statement that does not furnish design. Provide typical sections with dimensions
adequate to construct all proposed streets /travelways, including Emergency Access.
18. Revise Concrete sidewalk section to specify width. If width varies, provide Notes or captions that specify
width for corresponding road stationing. It is unusual to have no clear indication of structure widths, streets
and sidewalks. Road plans cannot be approved in this form.
19. Note 4: Please check note for logic - phrase "In the event that the surface course is applied prior to 60 days,
the pugmill requirement will apply," might instead be intended to apply the requirement if more than 60
days elapse. Also, please revise if necessary `surface course' (note 4) to reference `intermediate course.'
20. Asphalt paving - roads detail. Pavement detail must specify a Min depth, as opposed to a depth range.
Provide pavement design table, using ADT from Trip Generation Exhibit. Design pavement; specify
pavement/aggregate depths.
Sheet 8
21. Degraw Street -If Sta. 10 +00 is End Construction, please label profile. If work beyond 10 +00 is required,
provide design. For example, if VC work is required between stations 10 +00 and 10 +50, provide design.
22. Degraw Steet - Provide separate vertical profiles through Degraw /Avinity Loop merge lane, and
Degraw/Roundabout. Roadway splits. A single profile is ambiguous. Provide stationing (plan/profile).
Provide notes and labels sufficient to guide review, construction, inspection, bonding, bond release.
23. Montague Street -Label /identify End Construction station, profile and plan view.
24. Halsey Street - Provide VDOT Std. CD -1 where existing grade crosses proposed grade, sta. 11 +00.
25. Halsey Street -Add label to profile that clarifies whether Halsey ends at Moffat Court EP or CL.
Sheet 9
26. Moffat Court - Revise to show smooth VC. Moffat Court is the through street, Halsey the intersecting
street, and so design requires VC and not grade breaks on Moffat Court.
27. Although severe dip in the 8" WL may elicit ACSA comment. Albemarle County requires design revision
to unorthodox design at this point to avoid unnecessary point of construction and maintenance concern.
Relocate pipe 49 below 8" WL by adjusting MH /pipe elevations between structures 50 and 44. (See
drainage profiles, sheet 15).
28. Add labels that identify end of cul -de -sac at each end of Moffat Court.
29. Sheet 11 - Eliminate E in MH7 -Ex MH profile.
30. Sheet 12 - Eliminate E in MH17 -Ex MH profile (X 3).
31. Sheet 14 - Show /label safety slab (schematically) inside MH beneath Str. 10/DI -3B. [2 profiles incl. Str. 10]
32. Sheet 14 -Str 24B -Str 24 profile: Revise pipe str. #24A slope to 0.5% Min; 0.41% is too flat.
33. Sheet 15 -Str 50 -out profile: Revise and lower MH /pipe elevations between Str. 50 and 44 and raise 8" WL
elevation so that storm drain pipe passes beneath WL.
34. Sheet 17 -Yard drains: revise network pipe size diameter to 12" Min. Drainage plan review checklist
requires all pipes within drainage easements to be 15" Min. DIA.
35. Sheet 17 - Easement Width Table: Revise Easement provided for pipe 9.
36. Sheet 18 -Table 7 (6.5 "): 2413-313 Qb, carry-over =0.00 inconsistent with Table 7 (4 "), Qb =0.15. Please
check, revise as necessary.
37. Sheet 18 - Tables 6 (4 ") and 7 (4 ") cannot be evaluated. Provide street typical sections and No Parking
signs so it is possible to evaluate spread against travel lane width.
434.296 -5832 —x3096
Thank you
Engineering Review Comments
Page 3 of 3
File: SUB201500149 Avinity Estates—RP-101615