It would be on wood framing. I'm thinking that steel is going to be the way to go. My estimates for supporting LVL members puts me over the 12" height req. My initial steel i-beam estimates point to a w10x30x20' beam, but it's been awhile since I've needed to figure max loads and stresses for...
What's the best replacement for a 2-story basement load wall (LVL or steel i-beam)? Need to support a span of 20'. Current support structure is 3-14' LVL's and 1-6' LVL. The LVL's are 1.75x12 3100Fb 2.0E beams. Need to keep the height at 12" or less.