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RE: brick veneer support deflection

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BIA stands for Brick Institute of America.  The BIA web page is at  Under the "For Architects, Designers and Builders" is a
section called Tech Notes.  It appears that they have all the Tech Notes
online, including 28B.

Hope this helps.


Scott E. Maxwell, PE
Structural Engineer

SmithGroup Inc.
500 Griswold, Suite 500
Detroit, MI  48226

Phone: (313) 442-8253
Fax:   (313) 442-8297

Work Email:     smaxwell(--nospam--at)
Personal Email: smaxwell(--nospam--at)

At 08:29 PM 01/24/2000 -0500, you wrote:
>Harold: what is the BIA? I assume Building Inspectors Association?
>I don't have a copy of this. How big is it and could I get a copy of it
>Thanks, David Handy
>At 06:36 PM 1/24/00 -0600, you wrote:
>>The UBC says to use L/600 for total deflection.  The BIA says the lessor of
>>L/600 or 0.3".  I tend to agree with the BIA unless you can cut the masonry
>>into smaller panels with properly detailed joints that can accommodate more
>>movement.  I would recommend that you read the BIA Technical Note 28B.
>>Harold Sprague
>>> -----Original Message-----
>>> From:	David Handy [SMTP:dhandy(--nospam--at)]
>>> Sent:	Monday, January 24, 2000 6:15 PM
>>> To:	seaint(--nospam--at)
>>> Subject:	brick veneer support deflection
>>> What values do you use for meeting deflection requirements when supporting
>>> brick veneer at every floor. For example I have a building that use cast
>>> in
>>> lintel angle wedge inserts. There is a 3" concrete slab for the floors
>>> that
>>> is composite with the joists (HAMBRO). At the perimeter I am planning on a
>>> steel beam with the slab thickened to 8" to provide enough concrete for
>>> the
>>> anchors. This beam supports only a small strip of floor where parallel to
>>> the joists and supports a 10' trib of floor where perpendicular. The shelf
>>> angle at the edge of the slab supports about 12' of brick at each floor.
>>> I have typically used L/720 for the beams using the live load plus half of
>>> the weight of the brick wall as the means for evaluating the deflection. I
>>> know that many would use just the live load and maybe even a less strict
>>> L/???. What do you think?
>>> David Handy, P.Eng
>>> Ontario, Canada