International Rainwater Catchment Systems Association
International Rainwater Catchment Systems Conferences
  Next conference
  1st, Hawaii
  2nd, St Thomas
  3rd, Khon Kaen
  4th, Manila
  5th, Taiwan
  6th, Nairobi
  7th, Beijing
  8th, Tehran
  9th, Petrolina
  10th, Mannheim
  11th, Texcoco
  12th, New Delhi
  13th, Sydney
  14th, Kuala Lumpur
  Join IRCSA
  IRCSA Board

1st International Conference on Rain Water Cistern Systems
Honolulu, Hawaii, USA - June 1982

Section 3: Design, Cost, And Policy

Page 144

Application of Gould Matrix Technique to Roof Water Storage

Terry L. Piggott
Queensland Institute of Technology, Australia

Ian J. Schiefelbein
Gutteridge, Haskins & Davey, Australia

Mark T. Durham
Telecom, Australia


The dependence of many Australian homes on roof and tank rainwater collection systems. has been discussed in detail by Perrens (1975), Perrens used a monthly simulation model to relate roof area, storage capacity and demand to probability of failure at Armidale in New South Wales. He drew economic comparisons between extending the system capacity and buying water when the system failed to meet the required demand.

Durham (1980) and Schiefelbein (1981) used the Gould matrix technique (McMahon and Mein 1978) to determine probabilities of failure of a roof-tank system, rather than to rely on critical period methods. These studies were initially made for Brisbane and subsequently for a number of selected climatic zones within Queensland as part of a continuing programme.

This paper covers some aspects of the work initiated by Durham (1980) and continued by Schiefelbein (1981)

PDF of full document (7pp, 260kb)

Note: The IRCSA proceedings section is still new and under active management, If you find any problems, ommissions or corrections please contact the administrator so we can put things right.
Top of Page