AG 2004 05 17 - Laserfiche WebLink

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April 20, 2004 Page 431 f) Shall be steel troweled and light broom finished and cured properly Tooled joints shall be provided at intervals of not more than five (5) feet and expansion joints at intervals of not more than forty (40) feet. 4) Street trees shall be requzred in developments with average lot sizes of ~ acre or less. These trees shall meet the following requirements: a) Street trees shall be installed at a standard of one shade tree per fifty feet. b) Shade trees must be 2" to 2.5" in caliper and 10' to 12' at the time of planting. c) Where overhead power lines prevent the ~nstallat~on of shade trees, ornamental trees may be substituted. These ornamental trees must be 1.5" to 2" caliper for single stem trees or 1" to 1.5" for multi- stem trees. Either type must be 6' to 8' in height at the time of planting. d) The street trees shall be placed within a six (6) foot planting strip located between the back of the curb and sidewalk. 5) Collector streets shall use standard (2'-0" minimum) curb and gutter. Valley or standard curb and gutter can be used on the remaining streets 6) Cul-de-Sac pavement radius shall be maximized (37' minimum) within the r/w with an easement to accommodate any part of the street or utility infrastructure not contained wlthln the right-of-way so as not to affect setbacks. Sidewalk shall be extended all around the bulb of the cul-de- sac where density requires. A landscaped center is required and best management practices for stormwater treatment are encouraged. Construction typicals are being prepared for this. 7) The standard pavement cross sections must be shown on the plan. Pavement structure shall be 8" stone, 1 ~" surface course with an additional 1" surface course applied when a ma]ority of the construction is completed. 8) Right-of-way widths at a minimum of 50' will be permltted as shown in street typicals when at least three off street parking spaces are provided per dwelling unit. Street pavement width shall be 20' for streets serving less than 20 lots, 22' for other local streets, 24' for collector streets wlthout parking, and 28' for collector streets with parking. Curb and qutter is required. On streets with average lot sizes of one acre or greater curb and gutter shall not be required and NCDOT construction standards for right-of-way and pavement widths shall be used. Where three off street parking spaces are not provided, NCDOT standards for right-of-way and pavement width shall apply. 9) The NCDOT D~strict Engineer must approve the terrain classification. 10) Refer to NCDOT Subdivision Roads Construction Standards for minimum speed, horizontal, vertical, etc. design standards. This includes but is not limited to, minimum centerline radius, minimum k values, minimum distance between reverse curves, etc. II) Dedicated sight triangle easements at intersections with public streets will need to be shown on the final plat. The .County standard is 35' x 35' and NCDOT 10' x 70'. 12) The grades for 100' each way from intersections exceeding 5.0% are not allowed unless approved by NCDOT. 13) A Traffic Impact Analysis as required by the County shall be submitted, approved and adhered to. The County requires a Traffic Impact Study for subdivisions with greater than 200 trips per day. Non-residential development projects must meet NCDOT requlrements for Traffic Impact Studies. 14) Approval of an NCDOT Street and Driveway Access Permit Application is required before approval of the construction plans can be completed. Copies of the approved permmts shall be sent to the appropriate City Traffic Engineer where it is likely that road will become part of a city maintained system in the future. 15) The Developer is required to obtain any right-of-way in the name of the NCDOT that may be necessary to install all ad3acent and off-site turn lane improvements.