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basemntremdlr 06-20-2011 02:39 AM

header for Sliding door in basement
I am installing a slider on the back wall of a walkout basement. The door is standard 72"w x 80"h vinyl. My problem is this. The wall is an exterior wall and of course is load bearing. There was an existing roughly 90" picture window in place which i removed and framed back in. This had the standard double 2x10 sandwich header above it. Measurement from basement floor to first floor joists is 85". This only leaves me ~5" to play with for a header to span 6ft. There are 2 floors above the basment. Common sense, although not being an engineer, would tell me there is a :censored:-ton of weight on this wall. Would a 4-5" depth I beam work? Any other options with wood???

user1007 06-20-2011 04:57 AM

Glue lam beam would work. You can find load tables for them online but I would spend a bit to have an architect or structural engineer check everything.

Daniel Holzman 06-20-2011 08:18 AM

I would be careful about assuming a glulam would work. You state you have 5 inches of depth to work with. If this is accurate, then the largest glulam you could use would be five inches deep, unless you extend into the floor above. I assume there is a maximum width you could work with also, because of the block width, and not wanting to extend into the room, but perhaps this is not an issue.

In any case, a five inch deep glulam is not likely to provide anywhere near enough strength for your application, but of course you are going to check this with your structural engineer. I would ask them to consider a steel beam, more likely to work in this case.

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