Orange County NC Website
Browse       Search
~~~~~~~~1~~~1~U~~~l~~~~~~~~~~~~~~~~~~~~~~~~ <br />R85227 458 26l34 <br />Article 7: Subdivisions <br />5ection 7.8: Access and Roadways <br />Figure 7.8.5.D.2: Crowning of Roadway, NCDOT Typical ShoulderlCross Section <br />5' - fi' 6' - 8' 18' -~0' 6' - 8' S' - 6' <br />~'~I_ <br />~ ~'~_~ <br />f~ <br />Ditch f~~.i <br />Shoulder ! <br />Roadway , <br />: <br />Shouider Dirch <br />0.08 <br />~S~ ~:~ ~ - <br />- - <br />~i~ N 3,0~ _ t-0.02 0.02 ~. _0.08 3, -/~ <br />7 <br />- -..__- __ <br />__- ~_-- , -~~< <br />,Yrt~,. <br />~x ~ / <br />~~ <br />(e) In some situations it may be desirable not to crown the road but to h e\ <br />the travelway sloped to a single ditch as shown belo This is applicab <br />in four situations: <br />(i) Where it is necessary to cut down on the lengt f a i ' <br />order to reduce the erosion potential decreas t volu <br />of runoff, <br />{ii) Where it is difficult to construct ditches rock, <br />(iii) To provide for super-elevati , o <br />(iv) In curves. <br />(f) The single slope described in e) id always dr ' toward the inside <br />of a curve. The crown slop the and shoul r should be <br />approximately 1/2 to 1 in e oot. <br />Figure 7.8.5.D.2.e/f: Crowning oi Roadway, NCDOT <br />Roadway <br />I Slo~~e - 1!2" i~ <br />(3) <br />Single Slope <br />~/ " 6' - 8' S' - 6' <br />; f-i ~-~ <br />; Shoulder Dit~h <br />~ ', e <br />!~l~ 3~~ 5~~ ~a4 <br />_ or4•~ ,~-~ <br />cceptable m t rial for surfacing the traveiway is Aggregate Base <br />urse (com ly calied "crusher run"). <br />' t materials (commonly called "Chapel Hill Gravel" or <br />\"Chap GriY') will be accepted under the following conditions: <br />{~\ The material originates from a quarry approved by the North <br />---_~ Carolina Department of Transportation. <br />(ii) The grade of the road is less than 8%. <br />(iii) Where the g~ade is greater than 8% a layer of crusher run stone <br />will be placed over the Chapel Hill Gravel before compaclion. <br />(iv) Sources of surface material shall be verified with the certifying <br />professional before placement. <br />Fill Material <br />(a) Where filling is necessary to raise the roadbed, cross watercourses or fill <br />stump holes, it shall be done with suitable material that is free of roots or <br />other organic matter. <br />Orange County, North Carolina - Unified Development Ordinance Page 7-19 <br />