UK Water Industry Standards & Guidance
Water Industry Specifications / Information + Guidance Notes
Specific WIS / IGNs click on link below:
http://www.water.org.uk/publications/WIS-IGN
Bedding and sidefill materials for buried pipelines
Type: IGN
Code: 4-08-01A
Issue: Amendment No. 1
Status: Current
Notes: Amendment November 2008
Document: IGN 4-08-01A v1 – Trew 11 Dec 08.pdf
Specification for bedding and sidefill materials for buried pipelines
Type: WIS
Code: 4-08-02A
Issue: Amendment No. 1
Status: Current
Notes: Amendment November 2008
Document: WIS 4-08-02A v1 – Trew 11 Dec 08.pdf
Imported granular and selected as-dug bedding and sidefill materials for buried pipelines
Type: IGN
Code: 4-08-01
Issue: February 1994
Status: Current
Document: IGN 4-08-01.pdf
Imported granular and selected as-dug bedding and sidefill materials for buried pipelines
Type: WIS
Code: 4-08-02
Issue: February 1994
Status: Current
Document: WIS 4-08-02.pdf
Industry Guidance
The Drain Repair Book 3rd Edition