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Landscape & Design

By Sophie Rhéaume • December 9, 2017

Geotextile in SRW Construction

Techo-Bloc

Paver Pete presents the differences between woven and non-woven geotextile in segmented retaining wall construction.

 

 

A soil separator prevents migration of the soil material into an aggregate base or other types of base.

During the construction of a base, a soil separation fabric is not necessary when the soil type is sandy, and even less when choosing flowable fill as base material, which is liquid concrete.

However, it’s a different situation when you are faced with a clay soil, what we have most of the time in North America.

In this situation, we could use a nonwoven fabric.

non woven-1.jpg

We prefer a woven fabric because it has bilateral tension ability.

 The loads will be dispersed as they are placed on it, and any settlement will be bridged.

woven.jpg

Installation

STEP 1: Excavate a trench.

STEP 2: Place material into the trench, encapsulating the aggregate base.

encapsulate.jpg

STEP 3: Tension the geotextile by driving spikes in the corners.

It should have a tension rate of 3% to optimize its performance.

STEP 4: Apply 24 to 36 inches overlap and complete the stretch of the base.

 

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