Compact System Solution for High Water Occurrence and Thick Coating In civil engineering projects and underground constructions, such as retaining walls, bridge abutments, tunnels, and roof slabs covered with earth, a high volume of water and high loadings are usually to be expected, as a result of the earth and formwork pressure. In those cases where the drainage capacity and compressive strength of DELTA-DRAIN is not sufficient, the use of DELTA-GEO- |
DRAIN TP is recommended. Because of the special structure of its studs, DELTA-GEO-DRAIN TP has almost four times the compressive strength of DELTA-DRAIN and can be used at greater depths of up to 10 m and with extremely high formwork pressures (see the diagram on page 17). The studs, which are laid against the earth, function as a complete and highly effective drainage layer - in comparison 
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to DELTA-DRAIN with nearly three times the drainage capacity - which can also cope with high water volume. The welded on geotextile filters small particles out of the seepage water and prevents blocking of the drainage channels. This effect is also of use with two-layer constructions, for example when basement walls are concreted against timber excavation linings. DELTA-GEO-DRAIN TP is built in with the geotextile against the timber in order to prevent sediment getting into the" drainage as a result of voids in the planking or of subsequent rotting of the timber. |
