(A) Access to all and other structures within a park be made using . The maintenance of and drainage facilities be the responsibility of the . For the purpose of this chapter, the location of the entrance for a determines which type of road, collector or service, serves the unit.
(B) Construction standards are as follows:
Table 1
Construction Standards
Road Classification | ||
Item | Collector | Service
|
Road Classification | ||
Item | Collector | Service
|
Number of spaces/units served | 25 + | 1 to 24 |
Maximum grade stone surface | 12% | 15% |
Paved (asphalt) surface | 16% | 18% |
Minimum road width | 18 feet | 18 feet |
Shoulder width | 4 feet | 4 feet |
Stone base (ABC*) compacted | 8 inches | |
4 inches | ||
6 inches | ||
Asphalt | Not required** | Not required** |
Cut and fill slope | 2:1 | 1.5:1 |
Ditch slope | 4:1 | 3:1 |
Notes: * ABC = Aggregate Base Course, No. 7 stone. ** Paved roads, if used, meet the minimum for local residential subdivision roads. | ||
(1) Road construction. All roads must be constructed with suitable stone and be properly compacted. Used asphalt is unacceptable as a base course. The subgrade must be of a soil capable of supporting the road above. The road should be built so that water will drain from the road surface into side ditches. Because of the difficulty of operating vehicles and moving on steep grades and because of the high potential for erosion, roads should be constructed along the contour of the land where possible. Maximum road grades be as provided in Table 1. If a combination of paved and stone-based roads is proposed, the paved sections must extend 50 feet from any point where the grade exceeds the minimum for a stone-based road. The Administrator require that a professional engineer or surveyor certify on an as-built drawing that no portion of any have grades exceeding the maximum allowed by this chapter.
(2) Road drainage and culverts. All be provided with appropriate drainage facilities (see also § 151.050). Road drainage structures be constructed in accordance with minimum . Road drainage side ditches have sufficient depth and width to carry the expected volume of stormwater runoff. Where roads cross streams or minor watercourses, culverts be designed and installed in accordance with minimum .
(3) Turnarounds. A cul-de-sac or other turnaround approved by the Administrator is required on any which serves 10 or more spaces. Culs-de-sac have a minimum radius of 35 feet. Culs-de-sac and other approved turnarounds be surfaced with the same material required on the road they serve.
(4) Vertical clearance. All , including shoulder areas, have a minimum vertical clearance of 13 feet, 6 inches, to allow for the passage of emergency vehicles.
(Ord. passed 3-1-2004; Am. Ord. passed 10-13-2005; Am. Ord. 2016-04, passed 7-28-2016; Am. Ord. 2021-03, passed 3-25-2021)