SEFI General Discussion :: RE: IS : 801 CLAUSE 6.1.2

Dr. N. Subramanian — Thu, 31 May 2012 17:40:45 GMT

Author: Dr. N. Subramanian
Posted: Thu May 31, 2012 11:10 pm (GMT 5.5)

Dear Er Sandeep,

If you are using WSM, then 33% increase in stresses (IS 801 is based on WSM) is allowed as per IS codes-I do not have IS 801 and hence could not quote the clause. But clause 3.9 of IS 800:1984 clearly states this: When wind and EQ load-33.33% increase in members and 25% increase in rivets,bolts and tension rods.

However, such increase should not be taken when wind is the predominant load,as in Transmission line towers where the dead loads as very low (as indicated rightly by Er Vikramjeet). Industrial buildings with Cold formed sections can not be considered as structures with predominant wind load-moreover note that maximum wind loads which we consider in design will act on the structure only rarely, similar to EQ loads. Hence 33.33% can be allowed.

Note also that when we use LSD, this increase is automatically taken in partial load factors-1.5 for DL+LL and 1.2 when other loads are combined.

Best wishes
Subramanian

sandeep_chauhan wrote:

Vikram sir,
Thanks for your reply.

Sir if we design cold form section for an industrial building where sometime wind is major load & sometime live load is major.

in this situation what we have to do?
please see in this.

Thanks
Sandeep chauhan.

SEFI General Discussion :: RE: vastu shastra

vk.wits — Thu, 31 May 2012 17:21:10 GMT

Author: vk.wits
Subject: thanks
Posted: Thu May 31, 2012 10:51 pm (GMT 5.5)

karan1070 wrote:

Secrets of Vastushastra by N H Sahasrabudhe and R D Mahatme and Vatsushastra by Dr. shankar adawal these two books are describe about depth knowledge of vastu.I think Vatsushastra will be perfect for you but the ancient original book.
multiply and divide rational numbers

Mr. karan thanks ................ on ,more Q. where can i get the ancient book of vastu and who is writer ?

Structural Engineers Forum of India

SEFI General Discussion :: RE: IS : 801 CLAUSE 6.1.2

SEFI General Discussion :: RE: vastu shastra