Cover [49 CFR 192.327]

(A)A. Except as provided in Subsection C, E, F and G of this Section, each buried transmission line must be installed with a minimum cover as follows. [49 CFR 192.327(a)]#

Location#

Normal Soil#

Consolidated Rock#

Inches (Millimeters)#

Inches (Millimeters)#

Class 1 Locations#

30 (762)#

18 (457)#

Class 2, 3 and 4 Locations#

36 (914)#

24 (610)#

Drainage Ditches of Public Roads and Railroad Crossings#

36 (914)#

24 (610)#

(B)B. Except as provided in Subsections C and D of this Section, each buried main must be installed with at least 24 inches (610 millimeters) of cover. [49 CFR 192.327(b)]#

(C)C. Where an underground structure prevents the installation of a transmission line or main with the minimum cover, the transmission line or main may be installed with less cover if it is provided with additional protection to withstand anticipated external loads. [49 CFR 192.327(c)]#

(D)D. A main may be installed with less than 24 inches (610 millimeters) of cover if the law of the state or municipality: [49 CFR 192.327(d)]#

(1)1. establishes a minimum cover of less than 24 inches (610 millimeters); [49 CFR 192.327(d)(1)]#

(2)2. requires that mains be installed in a common trench with other utility lines; and [49 CFR 192.327(d)(2)]#

(3)3. provides adequately for prevention of damage to the pipe by external forces. [49 CFR 192.327(d)(3)]#

(E)E. Except as provided in Subsection C of this Section, all pipe installed in a navigable river, stream, or harbor must be installed with a minimum cover of 48 inches (1,219 millimeters) in soil or 24 inches (610 millimeters) in consolidated rock between the top of the pipe and the underwater natural bottom (as determined by recognized and generally accepted practices). [49 CFR 192.327(e)]#

(F)F. All pipe installed offshore, except in the Gulf of America and its inlets, under water not more than 200 feet (60 meters) deep, as measured from the mean low tide, must be installed as follows. [49 CFR 192.327(f)]#

(1)1. Except as provided in Subsection C of this Section, pipe under water less than 12 feet (3.66 meters) deep, must be installed with a minimum cover of 36 inches (914 millimeters) in soil or 18 inches (457 millimeters) in consolidated rock between the top of the pipe and the natural bottom. [49 CFR 192.327(f)(1)]#

(2)2. Pipe under water at least 12 feet (3.66 meters) deep must be installed so that the top of the pipe is below the natural bottom, unless the pipe is supported by stanchions, held in place by anchors or heavy concrete coating, or protected by an equivalent means. [49 CFR 192.327(f)(2)]#

(G)G. All pipelines installed under water in the Gulf of America and its inlets, as defined in §503, must be installed in accordance with §2712.C.3. [49 CFR 192.327(g)]#

AUTHORITY NOTE: Promulgated in accordance with R.S. 30:501 et seq.#

HISTORICAL NOTE: Promulgated by the Department of Natural Resources, Office of Conservation, LR 9:233 (April 1983), amended LR 10:525 (July 1984), LR 20:446 (April 1994), LR 24:1310 (July 1998), LR 27:1542 (September 2001), LR 30:1247 (June 2004), LR 31:684 (March 2005), LR 35:2805 (December 2009), amended by the Department of Conservation and Energy, Office of Enforcement, LR 51:1833 (November 2025).#