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Old 10-31-2011, 02:38 PM   #1
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beam to replace wall questions


Using a 16' LVL beam to replace a section of load bearing wall. Single story house, roof load only. Basement is cinder block with 3x12 center floor support and 2x10 at 16 inches to support the floor. Jack posts every 6 feet support the center support.

My main question deals with the fact is that the wall is actually about 1.5 feet off the center floor support. So the actual posts/framing (doubled or tripled 2x4's) that the beam will sit on will end sitting on top of an existing 2x4 footer right over the floor joists.

Is this close enough to the center support to not worry about it?

If the end of the footer where the post support will sit on is in-between the 16" floor supports (make sense?) Should I double up a couple more 2x10s and put them under where the most load will be?

Any need for additional jack posts anywhere?


Second question, I've seen people say you can build the 2 temp support walls directly under the ceiling drywall and other say you need to cut the drywall and get them under the actual joists- What is the consensus? the total roof span of both rooms combined is about 30 feet. There's blown insulation in the attic and it's all gonna come raining down!!

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Old 11-01-2011, 01:44 PM   #2
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beam to replace wall questions


In our area 1'6" offset is ok (maximum)for a load bearing partition. Your new end posts need posts directly below with post footings or additional multiple ply floor joists spanning from exterior wall to the basement center wall support which needs to receive additional studs at the built up beam intersection. The infloor beam needs to be sized to to carry the new end post point loads. I'd suggest you have an engineer confirm the framing revisions planned as 16' is a fairly large span.

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Old 11-01-2011, 01:48 PM   #3
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beam to replace wall questions


Was the lvl even sized? What you propose may or may not work. Sounds like you may be in over your head already. The temp posting question gave you away.
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Old 11-01-2011, 04:59 PM   #4
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beam to replace wall questions


consult an engineer directly, have them look at the house in person. teh posts have to be bearing on atleast a joist. not just in the middle of two joists as the weight will shear throught eh floor sheating
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