Originally Posted by bellacosa
We are knocking out a central load bearing ball with a span of about 20'. The wall is in between living/den with uneven ceiling height. One room has a higher slanted ceiling that is about 2' higher than the other. The total span carried is over 20' and the roof is a modest sloping shingle on a basic 70's brick ranch. The plan is to put up a 22' beam up in the space where the two uneven ceilings meet (cover w/ drywall and be unnoticeable) and attach the lower ceiling joists w/ hangers and then build a small pony wall to meet the higher ceiling joists above. Both ends of the header will meet at corners, where we intend to put 4 x 4 posts through to the foundation. My questions are, what depth of LVL beam should we use? Are 4 x 4 posts enough at each end? Will the hanger/pony wall work ok to attach joists?
Only proper answer to your question will be offered by a local structural engineer who can observe your property, calculate the loads, and offer structural alteration recommendations..
Anything less is pure guesswork.
In fact, Geogia building code ( 2003 IRC) requires and engineered design for such alterations.
You can't be issued a permit in Georgia without stamped professional drawings for such a remodel...so find an engineer or architect or other duly certified design professional who can service your needs and meet your Code's minimum requirements...
This is not a DIY guessing game.