WSAA is pleased to announce a revised water industry standard WSA 137 for maintenance shafts, maintenance chambers and maintenance holes is now available for comment.
Water Industry Standard: DR WSA 137-2019 Issue 3
Title: Industry standard for maintenance shafts, maintenance chambers and maintenance holes for sewerage
Issue 3 of DR WSA 137-2019 has been amended to include to maintenance holes by amending the scope and extending the diameter range of the base and riser to DN1000.
Comments are welcome by manufacturers, suppliers, designers, installers and asset owners, using the comments form and emailing firstname.lastname@example.org by COB 4 March 2019.
A copy of the DR WSA 137-2019 Issue 3 is attached, along with a comments form.
If you have any queries please contact Carl Radford on email email@example.com