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[ashoksharma]

Dear Sefians,

This is regarding design of BRICK PANEL WALLS against
lateral wind load ( as per NBC refer Appendix-A, clause 4.10.1) . NBC gives
permissible flexural stresses of brick masonry for bricks with
minimum crushing strength of 75Kg/cm2 . But in India there are many areas
where only POOR quality bricks are availble with crushing strength as low
as 35kg/cm2. For designing a panel wall in those areas how to find
permissible flexural stresss in that case. Or alternativley what is other
material whcih can be used in place of brick, cost effectivley.

Please help me to find out a solution for the same.

Ashok K Sharma

Posted via Email

[sdec.in]

If u look at the stress table for bricks in IS 4326, it gives permissible
stresses in all grades of bricks strength wise..even for bricks with 35
kg/sq cm...it also gives the reduction factors applicable and then one can
arrive at permissible stresses applicable after considering the slenderness
ratio of the wall , eq zone and no of storeys etc..
however the flexural sresses permitted in bricks are v limited and its
difficult to satisfy the codal check for flexure against wind/eq
etc....still being the cheapest infill mat. compared to AAC blocks or fly
ash bricks or Newer alternatives like GI Profile sheets covered with fibre
boardsetc these still happen to be the most cost effective solution at least
in North India.
pl get back to me with further queries if any
regards
sangeeta
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Sent: Monday, November 21, 2005 12:05 PM
Subject: Poor Quality Bricks in Panel Walls