Performance of Access Chambers
Plastic materials are increasingly being offered as alternative materials to concrete for manufacturing chamber units for the installation of valves and hydrants. The units vary in size and construction but ultimately their virtue lies in their lightweight nature and simplicity of installation. An appraisal of the structural integrity of plastic access chambers has been conducted in laboratory and site monitored tests with a view to extend their range of application to highways.
The performance of the units to imposed vertical and lateral loadings was evaluated. From the results of extensive tests, the long term design limits for each type of construction has been defined. It was found that only the stiffest plastic units based on the thicker sections were capable of withstanding the effects of large wheel loads of highway traffic.
|UKWIR Reference :- 99/WM/02/13||Published Date :- 17/04/2002|
|Retail Price (£) :- 12||ISBN :- 1 84057 156 X|