§ 14.06.150. Road construction standards—Typical section materials.

A.

Embankment Material. Embankment material shall contain no muck, frozen materials, roots, sod, or other deleterious matter. It shall have a liquid limit not greater than 25 and plasticity index not greater than six as determined by AASHTO T89 and T90.

B.

Type III shall be crushed aggregate material with at least 50 percent of the coarse aggregate having at least one fresh mechanically fractured face and graded within the limits of the Category IV Road Table.

C.

Geotextile Fabric. Geotextile fabric shall meet or exceed the following physical and mechanical requirements.

Geotextile Property	Test Method	Required Minimum
Grab Tensile Strength		190 lbs.
Grab Elongation	ASTM D 1682	30%
Burst Strength	ASTM D 751	290 psi
Trapezoidal Tear Strength	ASTM D 117	50 lbs.
Permeability	AASHTO M 288 K	(soil)

 

Geotextile shall be installed in accordance with manufacturer's recommendations. If multiple sections of fabric are required, the fabric shall be joined by overlapping adjacent sections a minimum of three feet.

(Ord. No. 2008-05(S), § 1, 5-6-08)