Originally Posted by john.p

Hi crkranz,

Fly ash is an aglomorate of various particles with widely varying properties. It settles in lenses through the bins. It can bind on a vertical face, so no side pressure is exerted - depending on the moisture content.

At a rough guess think of cement.

Better still, take several samples with different particle size and measure the angle of repose.

john.p

www.cospire.com>Engineering Tips

dEAR SIR

i AM TRYING to calculate the structural weight of mild steel silo . the material to be filled is fly ash at temp of normal temp

Now how to calcuilate teh structural weight of silo .

To be my limited information , structural weiight of ms silo shall consist of

1) Sillo stoffener

2) Specific weight at each column

3) Grating platform

4) Staircase

Sir , any book reference or any spreadsheet ■

I suggest you read Professor Rotter's book, published by The British Materials Handling Boad: -

‘Economic Guide to the Design of Circular Metal Silos’-

by Michael J. Rotter

ISBN 0 419 23460 8 Printed by SPON Press

11 Fetter Lane,

London EC4P 4EE ■