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RE: brick veneer support deflection

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Also: This is very strict, especially the 0.3" in one case this would be
L/1100. Would it make sense to use shear studs on the perimeter beams to
increase stiffness??? I would likely use a lesser amount for lateral
support reasons anyway. I don't use shear studs too often; would the
increase in stiffness be considerable or marginal?
thanks again, 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