Piped Systems

Document No:  D11#320712
Revision:  5
Date amended:  28-Jul-2015

The information below is intended to reflect the preferred practice of Main Roads Western Australia ("Main Roads"). Main Roads reserves the right to update this information at any time without notice. If you have any questions or comments please contact Zahirul Baten by e-mail or on (08) 9323 4160.

To the extent permitted by law, Main Roads, its employees, agents, authors and contributors are not liable for any loss resulting from any action taken or reliance made by you on the information herein displayed.


Revision Register


Ed/Version Number Clause Number Description of Revision Date
1 All Guideline Developed 23-Jan-2003
2 All Guideline Revised and Approved  25-May-2004
2A 1 Editorial Change 27-Jul-2004
2B 1.2 Modifications to Table 1.2 11-Aug-2004
2C 1.2 Note 1 of Table 1.2 Deleted. Note 2 Renumbered to Note 1. 07-Feb-2005
3 All Guideline Revised and Approved  03-May-2006
3A 2.4 Drainage Drawing 200231-101 amended. 30-Jun-2006
3B 2.3 Drainage Drawings 200231-091, 092, 093 and 122 Amended. 06-Jul-2006
3C 1.5 & 3.12 Specifications 404 and 410 updated. 10-Oct-2006
3D 3.6.3 Chart 6 from FHWA Amended to Chart 5A 08-Mar-2007
3E 1.5 & 3.12 Relinked to Updated Specifications 404 and 410. 19-Apr-2007
3F 1.2 Table 1.2 amended. 01-Feb-2008
3G 4.2 Drawing 200131-062 amended. 19-Jun-2008
3H 4.2 New Backfill Guidance to reflect drawing 200131-062. 10-Jul-2008
3I 1.5 & 3.12 Specification 404 updated. 23-Jun-2009
3J 2.3 Drainage Drawings 200231-091, 200231-092 and 200231-093 amended. 20-Nov-2009
3K 4.2 Drawing 200131-062 amended. 25-Jun-2010
4 All  References to Austroads documents updated, Contact updated. 09-Dec-2011
4A Header, 1.2, 3.6.2,3.8 and 3.9.1 E-mail of contact person amended. Minor text changed. e.g. km/hr and mm/hr changed to km/h and mm/h. 01-May-2012
​5​All​Document Deleted.​28-Jul-2015


Document deleted. Refer to Main Roads Supplement to Austroads Part 5A and Austroads Guide to Road Design (GRD) Part 5A.