Have a question on our Underground range? Need to know how deep you can install a 450mm chamber or know how long PVC will last? Our Technical team have come up with a list of frequently asked questions to help.
If we haven't answered your question then please call us on 01622 852695 where one of our knowledgeable staff will be able to assist you.
110mm 1:80 minimum 1 Wc 160mm 1: 150 minimum 5 WC
Yes no maximum.
1.2 metres [2 full risers and a third cut down] The base can be fitted deeper but within a traditional chamber construction 450mm inspection chambers can be fitted deeper up to approx 4.0metres but must have reduced access and use special heavy grade chamber base and risers, See underground catalogue for details.
No BS5955 give installation guidance
Wrap pipe in polythene sheet and fit vertical expansion boards at couplings
No not especially they will sharpen their teeth on any material that is in the way
PVCu has good chemical resistance and if installed correctly should last the lifetime of building
Use a gully with boss adaptors or take waste pipe below grating, use stub waste pipes
Yes we have gullies that give full rodding access or removable plug access all gullies have water seal
They are all manufactured to same British and European standard so should not have a problem
Use UCA40 on 130mm new thin wall drains or UCA41 on older drains that measure 133/140mm
Yes if the as-dug material is not suitable use 10mm nominal single size granular material
No if any thing less because they are manufactured in 6 metre lengths
Down to a maximum depth of 10 metres dependent on loadings