Agenda - 08-15-2000-9e - Laserfiche WebLink

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MEMQRANDUM TO: The Woodlands File FROM: Tina Moon, Planner II DATE: April 12, 2000 SUBJECT: Preliminary Plat comments from NCDOT Staff received the following comments from Mike Venable of NCDOT regarding the submitted preliminary plat and construction drawings for The Woodlands (formerly Nine Gates). Mr. Venable said that he would send a signed copy of the approved plans to the Planning Department once the requested changes were addressed. He added that most of the changes involve vertical dimensions of the roadways and should not affect the layout of the project far planning purposes. PRELIMINARY PLAT 1. The developer must add the following note: "All lots in the subdivision must be built and occupied prior to NCDOT's acceptance of public roads." 2. The open space areas around the curves of Nine Gates Road and Woodgate Drive must be dedicated as public. 3. The proposed dedicated public rights-of way must either be fifty (50) feet with 10-feet construction easements on both sides or sixty (60) feet. CONSTRUCTION DRAWINGS 4. The plan and profile sections on sheet 3 of the construction drawings show the proposed road elevations at Station 0+00 to 1+00 at x.0000%. This is too steep for the intersection with Jones Ferry Road. The slope at this area should flatter and the percentage reduced to -2.0000. Generally, the maximum slope for roads of this type should be no greater than 6.0000, but in this case to balance the flattened intersection area, the slope between stations 1+0Q and 2+00 can be increased as necessary to accommodate the -2.0000. 5. The existing 24inch RCP by Station 1.0+00, on sheet 3, must be removed. A single 54-inch RCP pipe will be required at the necessary diameter and length to handle the flow. 6. The proposed travel width of 18 feet shown on sheet 4 must be increased to 20 feet or the current design should be modified i.e. made shorter to accommodate the narrower dimension. 7. The K-value for this type of road must be at least 45. The vertical curve on sections of proposed roadways must be reconfigured on sheets 5,6,7, and 10. 8. The stub--the dedicated right-af--way between lots 32 and 33 must tae include 10 feet of construction easements on either side or be increased to 60 feet. This item shown on sheet 5 is also relevant on the plat (see comment 3). 9. The proposed vertical slope between Station 14+00 and 15+00 must either be increased to 1 % or the side ditch must be adjusted to provide proper drainage. 10. No drainage easement is shown on lot 30 around the flared end section on sheet 7. 11. The proposed roadway slope between Stations 4+Q0 and 5+00 on sheet 8, and between Stations 12+00 and 13+00 on sheet 9 must be increased to 1 %.