LUL - G0052
Civil Engineering - Gravity Drainage Systems
|Publication Date:||1 December 2012|
This Guidance Document applies to new and rehabilitated gravity drainage system assets (foul and surface water) owned by LU as part of the following drainage systems:
a) Track and off-track gravity drainage systems (surface water only).
b) Stations, depots and other operational buildings gravity drainage systems (foul and surface water).
c) Other gravity drainage systems (foul and surface water).
This Guidance Document provides guidance on the application of the Standard requirements for gravity drainage system assets (owned by LU) during their life cycle through Design, Construction, Maintenance (including Inspection and Assessment) and Decommissioning.
This Guidance Document precisely mirrors the sub-section headings of LU Standard S1052 (Civil Engineering - Gravity Drainage Systems) and Clause and sub-Clause numbering throughout. This arrangement facilitates easy reference when a user wishes to establish what further guidance is available for any given Clause in the Category 1 Standard; it also facilitates the future updating of the document.
The information contained in this Guidance Document is derived from a variety of sources including historical LU documents and other industry guidance regarded as good industry practice.
The purpose of this Guidance Document is to support LU Category 1 Standard S1052 Civil Engineering - Gravity Drainage Systems and give guidance on established good practice solutions that meet the requirements of that standard.
This standard also covers hydraulic and structural design of internal and external building gravity drainage systems (foul and surface water - including roof drainage). It should be noted that buried drainage assets are generally designated as Civil Engineering assets and non-buried drainage as Premises assets (except pump drainage assets which are also generally designated as Civil Engineering assets).
Guidance for pumped drainage systems is given in LU Guidance Document G0056 A2 Civil Engineering - Pump Drainage Systems.