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RE: Beam Repair Advise

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Nels -

Wouldn't you have to run the LVLs from bearing point to bearing point?

Otherwise, the load must "jump" from the existing beam to the sisters and
back again. This model, IMO, isn't the same as reinforcing an existing beam
with a cover plate and transferring the load via a VQ/I procedure.

Isn't that the way you see it?

Regards,

T. William (Bill) Allen, S.E.
ALLEN DESIGNS
Consulting Structural Engineers

-----Original Message-----
From: Nels Roselund [mailto:njineer(--nospam--at)att.net] 
Sent: Wednesday, March 22, 2006 8:57 AM
To: seaint(--nospam--at)seaint.org
Subject: RE: Beam Repair Advise

Irv,

If the MLAM has the capacity to span across the room, and not just to the
posts, why not sister a 1-3/4 x 11-7/8 LVL each side?

Nels Roselund, SE
South San Gabriel, CA
njineer(--nospam--at)att.net
-----Original Message-----
From: IRV FRUCHTMAN [mailto:ifaeng(--nospam--at)yahoo.com] 
Sent: Wednesday, March 22, 2006 6:11 AM
To: seaint(--nospam--at)seaint.org
Subject: Beam Repair Advise

Dear Fellow Engineers:
A carpenter removed a fireplace standing in the center
of 18'x18' room.  When he next uncovered the flue he
found that a 30" section of 3 1/2" x 11 7/8" MLAM beam
in the ceiling had been cut out to allow the flue to
pass. This beam supports floor joists for a similar
room above. The beam hasn't collapsed because there
are some posts (from the fireplace surround) to a
similar beam below. Of course the owners want to also
remove these posts. 

The only repair I've come up with is to splice the
opening with a 4"x12" steel rectangular tube, jammed
into each beam end.   

Can you advise? 

Thanks,
Irv


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