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Customer: Scotty my engineer okayed the steel beams above the w12x40 beams but I must raise the column high enough to weld the 12x26 to the side. Also I need to have the 12x26 beams drilled for a nailer to be flush with the top of joists which are …

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts.

I ran some rough numbers and your two W12x40 steel beams, with a 6" reinforced concrete deck (using stay in place forms), are adequate to carry an 8,000 pound vehicle. I would place markings on the deck, directly above the steel beams, so you know where to drive.

Customer: yesterday i got a beam size of w12x40 and a w8x67 for headroom can you give me a size for a 10" i am having trouble locating those sizes but can get 10" thanks Andrew Answered by StructuralEng in 1 min 11 years ago

Customer: How large and where located can I drill a 1/2", a 1 1/4", and a 2 1/2" hole through the web of a W12x40 Std Steel W Beam.....

Customer: i am needing to know if a 25' W12x40 beam would work for a live load floor and a dead load roof. Contractor's Assistant: OK. Tell me a bit more about what's going on so we can help you best. Customer: loft addition with a 25' span, need to support loft and roof.

If you have the time could you please explain exactly how the W12x26 support the W12x40 beams. Home Improvement Expert: ScottyT1119 They are on the same plan and provide support against lateral movement of the W12x40 beams.

For a single 30' beam, you can plan for a W12x40 (it's 12" deep x 8" wide and weighs 40 pounds per foot). If you add the two posts, you can plan for a W4x13 (it's 4" deep x 4" wide and weighs 13 pounds per foot). Steel should be ASTM A992 Gr. 50. …

I just noticed the W12 was a typo. I wrote the 50 pounds per foot correctly, but it should be a W12x50, not a W12x40. For the full 32' span, the W10 will be very heavy. For the 16' span, the W10 will be too deep as to not gain much in less weight. …