shelf angle lintel
shelf angle lintel
(OP)
I have a situation where there is a lintel that forms a vertical peak, but also protrudes horizontally at about a 15 degree angle. It's about a 8 foot opening with about 3 feet of brick above. Below is my attempt at a picture of it.
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Elevation Plan
Would a single angle lintel work okay for this situation? Do I need to worry about torsional effects? I'd like to keep it a shelf lintel because it is a wood framed building and there isn't a good place to put any steel columns or beams in this location.
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Elevation Plan
Would a single angle lintel work okay for this situation? Do I need to worry about torsional effects? I'd like to keep it a shelf lintel because it is a wood framed building and there isn't a good place to put any steel columns or beams in this location.






RE: shelf angle lintel
DaveAtkins
RE: shelf angle lintel
Another possibility would be to put a horizontal tube in the wall at the elevation of the peak and frame that into tube columns at each side of the window. The angles could then span from the tube column up tot he horizontal tube at the peak.
RE: shelf angle lintel
This lintel will not work unless it has been specifically designed as there as no capacity for arching action.
csd
RE: shelf angle lintel
"This lintel will not work unless it has been specifically designed as there as no capacity for arching action."
Are you concerned about the peak in it? I have designed it to not include arching action.
RE: shelf angle lintel
RE: shelf angle lintel
that's why I think the comments above are good - that you should look at ways of suspending the brick off the structure as opposed to attempting to span with a stand-alone flexural element.
RE: shelf angle lintel
Yes I agree my comment was a bit vague. I will explain.
At a typical straight opening, the brick has the ability to arch over, so even if you improperly size the lintel the brick over will most likely crack but otherwise bea alright. In other words there are alternate load paths.
In this case there are no alternate load paths so unless each and every part of your support system works correctly you run the risk of a local collapse of the brickwork. For this reason I suggest you look at it in detail.
The steel 'columns' mentioned are really more like mullions and would only need to go to the nearest floor above and below. You could take the vertical load out by bearing on the masonry either side of the opening.
csd