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I have a ground floor porch with a shed roof (3:12).

I have a ground...

I have a ground floor porch with a shed roof (3:12). Currently it has a 6 x 4 wood header on a 14' span. I want to widen the roof to 25' 6". (with a 24'-6" span). I would like to maintain close to the 6X hieght (so it does not block my window). What size steel girder would work in its place?

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Customer reply replied 5 months ago
The header is 4'-6" from the wall.
Answered in 37 minutes by:
3/8/2018
StructuralEng
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Do the rafters extend past the header?
What is the city and state so I can look at Snow loading?
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Customer reply replied 5 months ago
2 x 4 rafters extend past the header by 13". Comp roof. 1 x 10' t & g sheathing.Sunnyvale California.Thanks.
Customer reply replied 5 months ago
Rafters are 2' O.C.
You can plan for a W 6 x 20 beam ASTM A992 Gr. 50
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Customer reply replied 5 months ago
for a W 6 x 20 beam ASTM A992 Gr. 50 Steel beam. What is the equivalent size bean in I beam fiberglass, and Glu Lam with similar height but different width or doubling up if needed?
You can’t get close to that shallow with wood. Steel is 15x as stiff as a glulam. Fiberglass can’t come close, either.
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Customer reply replied 5 months ago
OK, thank you. You have been helpful.
No problem. I’m happy to help. Good luck with your project.
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