A.7 - Boring and Jacking.

A.7.1

Encasement Pipe. When necessary, waterlines shall be installed using boring and/or jacking technologies to avoid disturbance to surface features. All carrier pipes installed by boring or jacking shall be placed in an encasement pipe.

A.7.2

Joints. All joints for the carrier pipe shall be mechanically restrained within the limits of the encasement pipe.

A.7.3

Spacers. Casing spacers shall be provided for all boring/jacking operations. The casing spacers shall have stainless steel bands and fasteners with reinforced plastic runners. The size, length, number, and location of the spacers shall be per the manufacturer's recommendation.

A.7.4

Annular Space. The annular spaces on the outside of the encasement pipe shall be filled by pressure grouting for the entire length before the carrier pipe is set in place.

A .7.5

Encasement Ends. The ends of the encasement pipe will be sealed with a boot or seal wrap to prevent migration of adjacent backfill into the encasement pipe.

A.7.6

Isolation Valves. Bores under State highways or large creeks/rivers (generally defined as bores in excess of 100 feet) shall have isolation valves provided on both sides of the bore.

(Ord. No. 2016-61, § 1(Exh. A), 10-13-16)