[Ferro List] [Fwd: Septic tank]

[paul at ferrocement.net]

Hello All,

The following message came to me on the side.

I know we have a few engineers on this list and I am wondering if someone
can help this fellow. Please reply directly to his address.

Paul

---------------------------- Original Message ----------------------------
Subject: Septic tank
From:    "Mr.Werasinghe" <renuka39 at nerdc.lk>
Date:    Tue, June 10, 2008 4:16 am
To:      paul at ferrocement.net
--------------------------------------------------------------------------


Sir,
 I've cast a Ferro cement septic tank and it is okay. but it required to
prove the strength. I did the simple load test. tank is cheaper and
lighter than the concrete tank.
Could you please help me to prove  that tank is structurally okay for the
external and internal loads

i.e.. Internal water pressure
   external soil load and live loads

Details of the tank is as follows.


Length 8'-0"
Dia 2'-0"
Wall thickness 0'-3/4"
Steel used G18, 1" x 1" GI welded mesh
                1/4" dia ms rings at 2'-0" intervals

Thank you
Weerasinghe