Wrapping wood beams with steal?
Wrapping wood beams with steal?
(OP)
I want to remove my pole supports for my main beams in my basement. Would it be possible to wrap my main beams on three sides with a piece of u-channel steel? The steel would be where the two ends of beams come together. If so, how thick and long would it have to be?
RE: Wrapping wood beams with steal?
As for thickness of the plate and number of fasteners to connect the new plate to the existing beam, I recommend you consult a local structural engineer. Solution depends on many factors such as span, end condition, floor loading etc.
RE: Wrapping wood beams with steal?
Pull out a construction permit. If in the future there is a problem like strucutre cracks, or wahtever, and the insurer finds unpermitted structural modifications were made, they may deny coverage, and righfully so. It would be for your own safety also.
RE: Wrapping wood beams with steal?
All joking aside, depending on many columns you plan on removing you may actually need to replace some of the existing columns and replace or reinforce the footings. Since you now will be supporting more load on the "end" column, it will probably need to be replaced. Typically, in my area (NE) basemnents have concrete filled lally (not lolly)columns, usually spaced about 7-8 feet on center, supporting the girder. Depending on the height of the column (usually about 7 feet), the column capacity is about 10kips. As soon as you remove one column, you will overload the existing lally.
The footings beneath the lally columns are usually about 2 feet square (depending on local soil conditions). Assuming an average bearing capacity of 4,000 psf. The footing has a capacity of about 16 kips...ASSUMING THE CONTRACTORS ACTUALLY LOCATED THE FOOTINGS AT THE CENTERLINE OF THE COLUMN. Usually the footings are off a few inches which will reduce the allowable load to the footinmg to somewhere about 12 kips. Again, once you remove one column, the footing is overloaded.