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Old 05-12-2012, 10:32 AM   #1
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Beam Support / Column Questions


First, I know it is a simple call away for me to ask the inspector what he prefers. However, I am finding that most of my solutions thus far in my construction projects have been acceptable to the inspector without further input from him. Therefore, I want to know the 'best' methods for the below questions if ya'll might have any input.

1.) BEAM CONNECTION TO STEEL COLUMNS. Know that I am using a 2-ply LVL For my beam that fits nicely on top of the steel column flange. The column flange has 4-holes for screws and I would not be asking this if my beam was solid lumber, however-- is there ANY penalty is using Lag Bolts to connect the steel column flange to the LVL beam?

2.) Steel column and the concrete pad: Know that I have not poured a concrete pad yet, and just poured sufficient column footers for them to rest on until I pour my garage floor. Is there ANY issue with me pouring over the base of the steel column? It is NOT a lally column... it is just an adjustable height steel column. This would permanently embed the steel into the foundation for ever. The only issue i could forsee is 50-years down the road someone having to replace the columns due to rust etc and having to jackhammer them out.

Those are my main questions for now..
Thanks guys!

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Old 05-12-2012, 10:38 AM   #2
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Beam Support / Column Questions


Quote:
Originally Posted by bnentrup View Post
First, I know it is a simple call away for me to ask the inspector what he prefers. However, I am finding that most of my solutions thus far in my construction projects have been acceptable to the inspector without further input from him. Therefore, I want to know the 'best' methods for the below questions if ya'll might have any input.

1.) BEAM CONNECTION TO STEEL COLUMNS. Know that I am using a 2-ply LVL For my beam that fits nicely on top of the steel column flange. The column flange has 4-holes for screws and I would not be asking this if my beam was solid lumber, however-- is there ANY penalty is using Lag Bolts to connect the steel column flange to the LVL beam?

2.) Steel column and the concrete pad: Know that I have not poured a concrete pad yet, and just poured sufficient column footers for them to rest on until I pour my garage floor. Is there ANY issue with me pouring over the base of the steel column? It is NOT a lally column... it is just an adjustable height steel column. This would permanently embed the steel into the foundation for ever. The only issue i could forsee is 50-years down the road someone having to replace the columns due to rust etc and having to jackhammer them out.

Those are my main questions for now..
Thanks guys!


1 No

2. Done all the time around here.

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Old 05-12-2012, 11:35 AM   #3
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Beam Support / Column Questions


I agree with previous post. One issue you need to address. You state you have an adjustable height column. I take it this is for permanent support. You need to verify with the manufacturer that the specific column you are using is rated for permanent support, a lot of adjustable columns are rated for temporary support only.
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Old 05-12-2012, 05:44 PM   #4
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Beam Support / Column Questions


Regarding the lag bolts, this needs some clarification. A lag bolt is arguably a misnomer. It's a lag screw. A screw has threads which "dig into" the wood and help prevent it from pulling it. A bolt is a fastener whose threads do not dig into the material but rather are mated with a nut. These definitions are a bit oversimplified, but they're easy to understand and are close enough.

In your case, I would use a bolt. Generally speaking, a bolt will perform better than a screw. (Of course, you need to use not just a nut but also a washer).

Lag screws are used instead of bolts when circumstances dictate their use. For example, when fastening a ledger board to joists ends.

Lag screws are plenty strong. It's just that a bolt connection is stronger.
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Old 05-13-2012, 12:13 PM   #5
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Beam Support / Column Questions


Using a screw is fine. I would recommend using a Fasten Master trusslok screw. The reason is you are using lvl's. If you use a regular 1/2" lag you will split the ply's. The trusslok is a fastener designed for lvl's.

Using an adjustable column, the threaded end should be embedded in the concrete floor.

Hope this helps.
David

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Old 05-14-2012, 11:11 PM   #6
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Beam Support / Column Questions


great info- thanks guys!

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