HomeMy WebLinkAboutSUB201400215 Review Comments Road Plan and Comps. 2015-03-31� pF��{A{--����i
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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:
Glenmore Section K2C
Plan preparer:
Scott Collins, Adam Long /Collins Engineering
200 Garrett St., Suite K, Charlottesville, VA 22902, scott(a),collins-
engineering.com, adam)collins -en ine�ering com]
Owner or rep.:
Glenmore Associates Limited Partnership, P.O. Box 7623
Charlottesville, VA 22906
Plan received date:
16 Mar 15
Date of comments:
31 Mar 15
Reviewer:
John Anderson
R o a d P l a n s (SUB201400215)
1) Sheet 4 — Provide design that will turn ditch flow from west (along Waterside Way) to south
(Osprey Drive). Qlo (1.81 cfs) will not reasonably turn 90° at this location. Q2 will erode
roadway embankment. Option: install culvert pipe (80 -100' L) at 45° to transition flow west
to south. Alternatively, continue ditch west beneath Osprey, and revise VSMP as needed.
2) Sheet 4 — SWM Facility `C' Access, south of Lot 19: provide ditch north of access road to
intercept slope runoff/protect facility access. Direct runoff to the inlet of Culvert #28.
3) Sheet 4 — Revise label proposed Ditch #1 to concrete flume ( VESCH, Spec 3.16).
Recommend shading features which are either concrete ditch ( VESCH 3.17), or flume (3.16).
4) Ref. VESCH for design requirements, concrete flume/Ditch 41. Furnish design, dimensions,
and details to aid construction. Transfer details /notes from VESCH Specs. 3.16/3.17, to plans.
5) Update VSMP to reflect VESCH technical specifications for concrete flume /stormwater
conveyance. Review VDOT standards for concrete conveyance (ref. VESCH /pg. I1I -137).
6) Sheet 5 — Revise road classification schedule Waterside Way VPD to 230 (10 VPD /lot). This
should not affect DR, or pavement thicknesses.
7) Sheet 5 — Provide detail for asphalt walking trail where it meets driveways (plan/profile).
8) Sheet 5 — Revise typical roadway sections. Dimensions indicate 49' and 57' RW width.
9) Sheet 7 — MH -31 to MH -27 profile/MH -27 to Ex. MH- CC -4 -1 profile: sewer mains between
26 -27 and 27 -28 to be ductile iron. Please revise. (Ref ACSA email: 3/30/2015 11:55 AM)
10) Sheet 8 — Revise storm pipe grade between Str. 6 and 4A: Max =16 %. This should not affect
MH type or design, or other elements of design.
11) Sheet 8 — Revise grade, pipe 7 or 9 such that INV elevations at Str. 6 are not both 367.00.
These pipes connect with structure 6 at 55° an angle that may not work given dimensions of
MH penetrations required to accommodate 15" DIA storm pipes. Note max pipe grade, 16 %.
12) Sheet 9 — Include Culvert 28 in pipe design table. It differs fundamentally from driveway
pipes.
13) Sheet 9 — Ditch 2: indicate jute sections on profile /cross - reference table (Sta. 0 +00 — 2 +00).
14) Sheet 9 — For each circle inset ditch detail, indicate slope 3: 1, consistent with typical road
sections, sheet 5.
15) Sheet 9 — Ditch tables: include total ditch width, consistent with typical sections, sheet 5.
16) Sheet 10 — Provide separate plan/profile details for (DI -12) inlet 2 and inlet 10. Show Qio
depth = 8.2" and 7.5" respectively, profile views. Furnish design/spot elev. to guide grading.
(Cross - reference grades, sheet 4.)
Engineering Review Comments
Page 2 of 2
17) Include details for private entrances for private streets (Waterside Way and Osprey Drive),
and public streets. VDOT requires driveway entrance radius 20 -ft, Min. Alb. Co. will in this
case accept 12' radius driveway entrance on private streets. Include details, below. Indicate
on sheet 3 (or elsewhere) which entrance detail applies to Lots 24, 25, 26, Carroll Creek Road.
Drivewav entrance detail for Carroll Creek Rd (public RW) — confirmed Emr. Requirements with VDOT. 3/23/15:
Note:
I 'M 9 I
c"5
Entrances shall be 12 R wkie and
See VDOT Road and Bridge Standards,
it necessary
� 16 Ft.
transition smoothly into the roadway
Std: PE -1 for cutlfll details
surface. Driveway entrance pavement
All entrance grades shall start back bt
shall extend to the right of way line.
the shoulder line.
a
When an existing street is redeveloped
If drainage. ; necessary, the ditch line
he
8.
and modlflcatlon of an &Astlng driveway
entrance is required, the entrance
move to provide 8 inches
m d back
may
o
pavement shall be extended to the right
(min .l ever over pipe_
FIGURE 9 — PRIVATE ENTRANCE DETAIL'
of way line or the extent ofdisturbar"
Dk.h Now line
EW
the existing driveway.
a 2
Radios Nofe p =
Driveway entrance detail for private streets:
rdore5:
See VD07 Road and 6rdge Standards, Sid. PE -1 for caaMI details.
Ad entrance grades shah start bade ai the stn Wdw tine.
if drainage is necessary, the dim line may be mm ad hack to phi 9 imhas {mn.I mvsr aver pipe-
Entrances shat be 12 ft wide and trari ion srnooihly into the roadway surface. Driveway antrarce
pavw nerd shall extend to the right of lire. When m existing street is re- developed and modification of
an existing drivewdy entrants is r0puired, the entr r pavemend Shen be extended lathe right of way
Erie w the u> lent of diowbance to the a iilStlnrJ. dnYeeway.
Y cesranle R-hi Noe:
EE a Fw entrances to ma7Neye having ADT of 20M or rrore.
u5 M use radix of 20 feet. Fu ACT under 2000 radius may
m v be 12 feet
Pipe mNert
Pipe culvert — Surfaoed
it necessary
� 16 Ft.
o
Ditch flow line Graded
R =20' Min.
ti
a�
Shoulder
8.
u to
— Edge of Roadway Pavement
Roadway Pavement
FIGURE 9 — PRIVATE ENTRANCE DETAIL'
See 5° >�
Driveway entrance detail for private streets:
rdore5:
See VD07 Road and 6rdge Standards, Sid. PE -1 for caaMI details.
Ad entrance grades shah start bade ai the stn Wdw tine.
if drainage is necessary, the dim line may be mm ad hack to phi 9 imhas {mn.I mvsr aver pipe-
Entrances shat be 12 ft wide and trari ion srnooihly into the roadway surface. Driveway antrarce
pavw nerd shall extend to the right of lire. When m existing street is re- developed and modification of
an existing drivewdy entrants is r0puired, the entr r pavemend Shen be extended lathe right of way
Erie w the u> lent of diowbance to the a iilStlnrJ. dnYeeway.
Y cesranle R-hi Noe:
EE a Fw entrances to ma7Neye having ADT of 20M or rrore.
u5 M use radix of 20 feet. Fu ACT under 2000 radius may
m v be 12 feet
Pipe mNert
it nesay
12 FT
SURFACE'
u to
16 FT
See 5° >�
Dk.h Now line
Radios Nofe p =
5lnoolder
: a
Edge of roadway pavement
ROADWAY PAVEktENT
FIGURE 9 — PRIVATE ENTRANCE DETAIL
Note —I would like to comment on the clarity and care of design, the conservative and thoughtful approach. In
my view, these plans are excellent. Please call if any questions. Thank you. 434.296 -5832 —x3069
File: SUB201400215- Glenmore Sect K2C Road - 033115