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Strips of Capiphon™ belt can be simply nailed to the rear face of a retaining wall and inserted into a discharge pipe as usual. In situ soil can be used to backfill.
Most competitors advise having a 20 cm wide gravel drainage layer running the full height of the wall behind it (apart from a clay cap on top) In practice this is very tedious, costly, and unnecessary. At most, a 20 cm gravel or coarse sand layer on top of the discharge pipe is recommended if the soil has a high clay content. By placing lengths of Capiphon™ against the wall will pick up any water as it moves towards the wall.
If a serious challenge from water coming, not from the surface but from an underground source, is feared a Capiphon™ pipe can be inserted into the discharge pipe.
The presence of expansive or reactive soils is often quoted as the reason to use a gravel drainage layer. There should not be a problem with the more thorough capillary drainage afforded by Capiphon™ given that
Hundreds of retaining walls have been drained using Capiphon™. In most cases the trenches have been backfilled only with sand at bottom to cover the collecting pipe as protection before backfilling with existing soil materials.
If circumstances allow smaller walls can be excavated by machine or manually to replace blocked conventional drainage with Capiphon™, or to install new Capiphon™ drainage if there is none. Alternatively, Capiphon™ pipe can be inserted into horizontal shafts drilled into the retaining wall. This is a particularly useful technique where the structure of the wall is damaged or would be further compromised by excavation.
The Reece Group now stock Capiphon in their stores in Australia. Reece operate Australia’s largest plumbing and bathroom supplies business, ..
A new Case Study has been added to the website. See Protecting a Very Valuable Asset (And Saving Huge Costs) () I ()t shows how to create a s..
Bill Klohn of Country Ki Homes based in Emu Plains has recently joined the Capiphon team as a Distributor. Bill is a keen golfer and was instr..