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Old 03-06-2011, 08:52 AM   #1
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Laminated Beam

I want to replace a load bearing wall (single story) with a laminated beam and a 4x4 post @ one end. Will the slab support it and not crack?


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Old 03-06-2011, 09:24 AM   #2
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I assume the "it" in your sentence refers to the 4x4 post. The post must be supported on a suitable foundation. A typical 4 inch or thinner basement slab is not a suitable foundation. You did not describe the 4 inch post; I assume you refer to a 4x4 nominal wood post. This may not be strong enough for your application, however there is no way to tell how much load this element must take, since you did not describe the geometry of the house, or the code loading you are subject to. You may be better off with a steel lally column.


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Old 03-08-2011, 12:10 AM   #3
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If you put in a header, how can you only put in one post and not have a post on the other side? What is picking up the load from the other side of the header? How long is the opening going to be? The force to the column differ greatly between a 4' opening and a 10' opening.
Also, be careful when you guys remove "load bearing walls". These walls may also be shearwalls or lateral walls. Chances aren't high in residential projects, but might happen, esp in areas with high seismic activities.
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Old 03-08-2011, 07:10 AM   #4
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Most likely the other end is on another wall, right?

And Mr. Holzman is the expert, just don't read that as it's okay to just use a steel post there, doesn't matter if it's steel or wood, it might crack. And you can get laminated posts as well, might be easier to work with.

The most economical way to see if it's something you want to pursue is to take some drawings or photos to a local lumber yard and they will be able to give you an idea of the size needed. THEN if you want to go further you can get an engineer to come in and get you what you need to get the permits.
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