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Re: SEGMENTAL RETAINING WALL USED FOR DETENtION BASIN

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The segmental retaining walls are composed of concrete cells filled of
granular material, and therefore drainage is not usually a concern. The
water is normally collected witha perforated pipe at bottom and taken to the
nearest catch basin. The geogrid is just the reinforcement and it doesn't
affect the drainage at all. Check www.ncma.org for further details.

Javier Encinas
ASDIP Structural Software
----- Original Message -----
From: Helen Zhou <Helen_Zhou(--nospam--at)stlouisco.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Friday, November 22, 2002 4:00 PM
Subject: SEGMENTAL RETAINING WALL USED FOR DETENtION BASIN


** Proprietary **

Hi,
     Please help !
     Segmental retaining wall with geogrid reinforcement, 13' hg, for
detention basin. Whether drainage req'd at the back of wall ?  How to avoid
water built up at the back of wall ?  Do the geogrid function differently ?


Thank you.

Helen Zhou


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