To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
Subject: RE. Min. Steel in Concrete Column
From: ARW <arw(--nospam--at)lhr.paknet.com.pk>
Date: Wed, 7 Feb 2001 13:03:12 +-500
Encoding: 22 TEXT
Min. Steel in Concrete Column
In response to Larry Lao's question regarding the code requirements for
minimum steel reinforcement in columns.
According to my understanding, the code permits to designer to base his
design on an imaginiary reduced cross section, located within the
architecturally required section, provided the reduced section has an area
at leat equal to 50% of the actually provided area.
In the case of a 48" x 48" section, the design could be based on a section
at least 34" x 34" in dimensions, designed to carry all the forces, and
with a minimum of 1% reinforcement (11.56 sq in). The code would not have
any objection, if concrete is thereafter added around the said properly
designed column, whereby the dimensions would be increased to teh desired
48" x 48" size.
Rizwan Mirza, P.E.