§ 16.20.021. Roadway stabilization fabric (support membrane).

A.

All streets within the subdivision shall be improved with the use of a roadway stabilization fabric installed between the earth subgrade and the aggregate base course. This fabric shall extend the full width of the proposed pavement and be turned up eight inches on each side. All laps shall be a minimum of twenty-four inches.

B.

Stabilization fabric must be composed of rotproof, low water-absorbent fibers. The fiber network (woven or nonwoven) must be dimensionally stable (i.e., fibers must maintain their relative position with respect to each other) and resistant to delamination. The fabric must be new, and free from any flaws or defects which might significantly alter its physical properties. Torn or punctured fabric shall not be used.

C.

The following physical property requirements must be met:

Weight (ASTM D1910)	6.0 oz./sq.yd.
Grab Strength (ASTM D1682)	300 lb.
Grab Elongation (ASTM D1682)	20%
Puncture Strength (ASTM D75l)	100 lbs.

 

D.

After the stabilization fabric is installed, a minimum thickness of six inches of aggregate base shall be placed before any traffic is permitted over the fabric. The aggregate shall be placed by dumping into a pile and then pushing onto the fabric. The spreading equipment shall not damage the fabric. If any fabric is damaged, it shall be repaired immediately. Repairs shall be made in accordance with manufacturer's specifications with minimum overlap of twenty-four inches.

E.

Overlaps and turned-up edges will not be included in the payment measurements for square yards of fabric. The fabric shall be "Typar" as manufactured by DuPont, or an approved equal.

(Ord. 2702, 1988)