N.J. Admin. Code § 16:25-3.5

Current through Register Vol. 56, No. 21, November 4, 2024

Section 16:25-3.5 - Casings

(a) Casings shall be used for the following conditions:

1. As an expediency in the insertion, removal, replacement or maintenance of carrier pipe crossings of limited access highways and at other locations where it is necessary to avoid open trenched construction;

2. As protection for carrier pipes from external loads or shock, either during or after construction of the highway;

3. As a means of conveying leaking fluids or gases away from the area directly beneath the traveled way to a point of venting at or near the right-of-way line or to a point of drainage in the highway ditch or a natural drainage way.

(b) Jacked or bored installations of coated carrier pipes must be cased. Exceptions may be made where assurance can be provided against damage to the protective coating.

(c) Casings or other suitable protection shall be used for any pipeline:

1. With less than minimum bury;

2. Near footings of bridges or other highway structures or across unstable or subsiding ground;

3. Near other locations where there may be a hazard.

(d) Rigid casing or suitable bridging shall be used where support of the pavement would be impaired by depression of flexible carrier pipe.

(e) Casings shall be designed to support the load of the highway and superimposed loads thereon and, at a minimum, shall equal the structural requirements for highway drainage facilities. Casings shall be composed of material of satisfactory durability under conditions to which they may be exposed.

(f) Casings shall extend a suitable distance beyond the slope or ditch lines. Where appropriate, the casing shall extend to the access control lines, to the outside of frontage roads, or to an indicated line that allows for future widening of the highway, without the need for any utility adjustment.

(g) Casing pipe shall be sealed at the ends with a flexible material to prevent flowing water and debris from entering the annular space between the casing and the carrier. The installations should include necessary appurtenances, such as vents and markers.

N.J. Admin. Code § 16:25-3.5