What is the minimum recommended cover over a steel water pipeline?

A minimum of 1.0 m from the ground level to the top of the pipe is required. This should be increased for pipes laid under roads or areas with heavy traffic (Clause 5.3).

What is the standard method for joining pipes under this code?

The primary method specified is butt welding. The welding procedure and welder qualifications must conform to relevant standards like IS 816 (Clause 8).

What is the specified hydrostatic test pressure for the pipeline?

The pipeline should be subjected to a hydrostatic test pressure which is typically 1.5 times the maximum working pressure, unless specified otherwise by the engineer-in-charge (Clause 10.3).

What is the minimum clear width for a trench?

The trench width should provide a clear space of at least 20 cm on either side of the pipe (i.e., Pipe OD + 40 cm) to allow for proper jointing and compaction (Clause 6.2).

IS 5822

: 1994

Code of Practice for Laying of Electrically Welded Steel Pipes for Water Supply

CurrentFrequently UsedCode of PracticeBIMWater Resources · Public Health Engineering

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This standard provides a code of practice for laying electrically welded steel pipes for water supply and other water conveyance systems. It covers the entire process, including handling, trenching, laying, jointing (welding), backfilling, and hydrostatic testing to ensure a durable and leak-proof pipeline.

Code of Practice for Laying of Electrically Welded Steel Pipes for Water Supply

Quick Reference Values

Minimum cover for pipes1.0 m (from ground surface to top of pipe)

Minimum trench width at bottomExternal Diameter of pipe + 40 cm

Minimum bedding thickness7.5 cm

Hydrostatic test pressure1.5 times maximum working pressure or as specified

Maximum deviation from line and grade25 mm

Practical Notes

Proper trench preparation and bedding is critical to ensure uniform support for the pipe and prevent damage from point loads, especially in rocky strata.

Welding quality is the most crucial factor for pipeline integrity. Ensure all welders are certified for the specific procedure and that NDT (Non-Destructive Testing) is performed as required.

During backfilling, compaction must be done carefully in layers on the sides of the pipe (haunches) first to provide lateral support before filling over the crown of the pipe.