HomeMy WebLinkAboutSUB201800039 Review Comments Road Plan and Comps. 2020-06-16 (2)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:
Briarwood Phase 6 — Road Plan
Project File Number:
SUB201800039
Plan preparer:
Collins Engineering [scott@collins-engineering.coml
Owner:
Wendell Wood and Nena Harrell
Woodbriar Associates
Plan received date:
26 February 2018
(Rev. 1)
22 April 2020
Date of comments:
27 April 2018
(Rev. 1)
16 June 2020
Reviewer:
Matt Wentland
Scott,
We have reviewed the plans and have the following comments:
Engineering
1. A new VSMP plan (not an amendment) will need to be submitted and approved. (Rev. 1)
Comment not addressed. WP0201600054 is an early grading plan and does not
match the currently proposed layout.
2. Provide Deed Book and page numbers for all required off -site easements prior to plan
approval. (Rev. 1) Comment not addressed, response noted.
3. Pipe slopes will need to be less than 20%, with anchor block provided for slopes over
16% (County policy and VDOT Drainage Manual). (Rev. 1) Comment addressed.
4. Pipe velocities over 10 fps should be avoided (VDOT DM). (Rev. 1) Comment
addressed.
5. Provide HGL calculations and show the HGL on the profiles. (Rev. 1) Comment
addressed.
6. Provide a'h inch steel plate in storm manholes with drops or 4' or greater (VDOT DM).
(Rev. 1) Comment addressed.
7. Provide the design for the riprap at the pipe outlets (VDOT DM). (Rev. 1) Comment
addressed.
8. The maximum height of retaining walls located on managed slopes is 6' (18.30.7.5). It
appears that reverse slope benches or surface water diversions may also be required.
(Rev. 1) Comment partially addressed. The label on sheet 3 says max height 14'. The
managed slope overlay hatch should be darkened, as it was hard to distinguish.
Proposed slopes will still need to follow the design standards in 18.30.7.5 even if
shown in a survey to not be 25% or more. Reverse slope benches/surface water
diversion will be required per 18.30.7.5c every 20' height interval on 2:1 slopes.
9. Surveyor verification of the steep slopes will be required prior to VSMP approval. (Rev.
1) Comment not addressed, response noted.
Revision 1 Comments
Engineering Review Comments
Page 2 of 2
10. Include on the plans the Public Road Acceptance Procedure and the As -built Road Plan Policy.
11. It appears there should be a drainage easement on Lots 61 and 62 for pipe 437 and on
Inlet 454 on the existing lot.
12. [VSMP comment] SWM access path have a maximum allowable grade of 20% without
being surfaced with gravel or pavement (25% with surface). The access should also be
moved outside of the preserved slopes. [DSM, policy]
Transportation Planner — Daniel Butch
Refer to the VDOT Road Design Manual Appendix B - 1 for appropriate street trees within
planting strip adjacent to sidewalks.
Planning — Tori Kanellopoulos
Planning comments are attached to this email.
VDOT, E911 and Fire Rescue had no objection. ACSA comments will be forwarded when they are
received.
Thank you,
Matt Wentland
434.296-5832 -x3458
File: SUB201800039 Briarwood 6 RP comment revl 06-16-20.doc