HomeMy WebLinkAboutSUB201800171 Review Comments Road Plan and Comps. 2018-11-29COUNTY OF ALBEMARLE
Department of Community Development
401 McIntire Road, Room 227
Charlottesville, Virginia 22902-4596
Phone (434) 296-5832 Fax (434) 972-4126
Road Plan review
Project: Lewis and Drive Road Extension — Road Plans
Plan preparer: Jonathan Showalter, Timmons Group f onathan.showalter(a timmons.com]
608 Preston Ave., Suite 200 / Charlottesville, VA 22903
Owner or rep.: University of Virginia Foundation / P.O. Box 400218
Charlottesville, VA 22904 [tmarshall@uvafoundation.com]
Plan received date: 24 Sept 2018
Date of comments: 29 Nov 2018
Reviewer: John Anderson
SUB201800171
1. C4.4-C4.5: Provide cross drains with VDOT designations (CD-1,2) at every major cut and fill transition or
sage curve (Ref. Road Plan review checklist, pg. 4, item #6).
2. C4.3: Provide Street Name sign.
3. C4.3: Label stop bar.
4. C4.1: Revise striping legend to include prop. directional arrow.
5. C3.0 - C3.5: Remove erosion and sediment control notes, sequence, details, and plan sheets, since these
will be reviewed and approved with WP0201800073.
6. C2.0: Increase pitch of contour labels, so readable at scale of typical existing features.
7. C1.0: Include ref. to WP0201800073 with General Construction Notes for Erosion and Sediment Control,
and Albemarle County Stormwater Management Notes.
8. Show /include Albemare County Public Road Acceptance Procedure on Road Plans; link:
htW://www.albemarle.orgLupload/images/forms_center/departments/Community Development/forms/Enein
eering and _WPO_Forms/Road _Inspections _& Acceptance- Public _Road _Acceptance _Procedure _07-
26-2012.pdf
9. Show /include (MH) step detail, if not included.
10. Show /include VDOT safety slab detail, if not included.
11. Provide pavement design based on full build -out ADT.
12. C0.0 -Revise index (ESC sheets removed).
13. XS-27 — XS-36: VDOT (11/8/18) review comment #5: "The provided typical sections appear to have gutter
in sections that slope away from the curb and CG-2 in sections that slope toward the curb. Please explain."
Code requires curb and gutter (shall be constructed with) in the development areas. Revise design for all
stations with shoulder and ditch sections. Ref. VDOT Subdivision Street Design Guide, Appendix B(1),
Table 1, Geometric Design Standards for Residential and Mixed Use Subdivision Streets, which applies to
Lewis and Clark Road Extension.
(14-410.H., text image, below):
H. Curb, curb and gutter, sidewalks and planting strips. In the development areas, streets
shall be constructed with curb or curb and gutter, sidewalks and planting strips. Sidewalks and planting
strips shall designed and constructed in compliance with section 14-422.
GIS image, below
Parcel is located in development area zoned Planned Development Industrial Park, dark blue, image below.
Engineering Review Comments
Page 2 of 3
C8.2:
14. Provide detail and specifications for pipe and MH bedding for sections of storm system entirely or
substantially in fill. For example: structures 207, 205, 203 (pipes), and 206, 204 (MHs), 231 (pipe, C8.1),
255, 221 (pipes, C8.3).
15. Revise 16.96% slope, Str. 201. See Drainage Plan Review checklist, pg. 2, 3rd item. Link:
hqp://www.albemarle.orgLunload/ima2es/forms_center/departments/Community Development/forms/Engineering and
WPO Forms/Engineering Review Drainage Plans Checklist lDec20l4.pdf
From VDOT Drainage Manual:
9.4.8.7 Maximum Grades
Slopes that incur uniform Flo excess of 14 f ould be avoided because
of the potential for ab $
ian. Slopes in excess of 1 ti% are n eferred because of the
need for anchor blocks. When anchor blocks are used, they should be installed at
every other pipe joint, as a minimum. (See Special Design Drawing No. A-73 and MA-
73 for Anchor Details for Concrete Pipe)
16. Provide '/2" steel plate in the bottom of manholes, wherever applicable.
From VDOT Drainage Manual, p. 9-38, image below:
9.37 of7n
9.4-Design Concepts
Where "step down" manholes are used, the Drainage Designer should provide any
needed protection to prevent deterioration of the bottom of the manhole. This protection
can be provided by the addition of a % inch steel plate in the bottom of the manhole.
This protection should a considered �� between the
inverts of the inlet pipe and outlet pip is 4' or greater, a a� one f the following
factors are present or anticipated: \ -�
• The flow is expected to carry any abrasive material
• Continuous live flow or live flow lasting several days may be expected
• The size of the main pipes is 48" or greater in diameter (for circular pipe) or the
hydraulic opening is 12 ftz or greater (for shapes other than circular)
Velocity dissipation is usually needed at the outlet of pipes on steep grades and the
Drainage Designer should provide the type of dissipation appropriate for velocity, pipe
size, discharge and site constraints.
Engineering Review Comments
Page 3 of 3
17. Provide VDOT safety slab label for any structure/s with height greatcr than 12'; Str. 202, for example.
18. Provide safety slab detail (SL-1); provide MH safety step detail.
Ifyou have questions, please contact me at janderson2kalbemarle.org or at 434.296-5832-x3069.
Thank you for your help and patience.
J. Anderson
SUB201800171 Lewis and Clark Drive Road Ext 112918