HomeMy WebLinkAboutWPO200800103 Review Comments Road Plan and Comps. 2009-02-10WPO- 2008 -00103 Pounding Branch Sub phases II and III
Philip Custer
From: Denunzio, Joel D., P.E. [ Joel .Denunzio @VDOT.virginia.gov]
Sent: Tuesday, February 10, 2009 9:46 AM
To: Philip Custer
Subject: WPO- 2008 -00103 Pounding Branch Sub phases II and III
WPO- 2008 -00103 Pounding Branch Sub phases II and III
Phil,
We have reviewed the above plan and have the following comments:
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• The intersection at Sprouse Mountain Road and Rte. 637 should be revised to provide a landing,
minimum of 50' in length and having a maximum vertical grade of 2 %. This should be measured from the edge of
pavement of the connecting road.
• The edge of pavement radii at the intersections of Sprouse Mountain Road and Pounding Branch Lane
should be increased to 50'.
• The culvert outlet protection for all pipes should be designed in accordance with VDOT's Hydraulic
Design Advisory HDA 06 -03.1.
• The freeboard calculations for the DI -7 drop inlets should be revised to comply with Section 9.4.7.2 of
the VDOT Drainage Manual. The 50% clogged line should be used for the design headwater depths.
• The roadway typical section detail for shoulder widths requiring guardrail should be revised to show an
additional width of 3'.
• The cul -de -sacs need to be approved by the county in coordination with emergency services for a
radius of less than 45 feet.
If you have any questions, please let me know.
Thanks
Joel
Joel DeNunzio, P.E.
Staff Engineer
434 -293 -0011 Ext. 120
joel.denunzio @vdot.virginia.gov
2/10/2009