Existing Glulam Beam to Glulam Beam Splice Connection
Existing Glulam Beam to Glulam Beam Splice Connection
(OP)
Hi,
My client is requesting to remove several interior wood post columns supporting a flat wood framed roof and replacing them with steel tube columns at different locations along the existing roof glulam beams. At one location where the existing post is being removed, the newly located tube column has created a cantilevered beam condition which now must support the adjacent glulam beam. The load on the connection is approximately 18 kips. I am proposing to attach the beams together with an inverted steel beam saddle with 3/4" diameter through bolts in each beam.
My question is has anyone had experience with this type of connection and is there any easier way to support the adjacent beam without removing the roof.
Thanks.
My client is requesting to remove several interior wood post columns supporting a flat wood framed roof and replacing them with steel tube columns at different locations along the existing roof glulam beams. At one location where the existing post is being removed, the newly located tube column has created a cantilevered beam condition which now must support the adjacent glulam beam. The load on the connection is approximately 18 kips. I am proposing to attach the beams together with an inverted steel beam saddle with 3/4" diameter through bolts in each beam.
My question is has anyone had experience with this type of connection and is there any easier way to support the adjacent beam without removing the roof.
Thanks.






RE: Existing Glulam Beam to Glulam Beam Splice Connection
A large separation also will induce a horizontal splitting in the supporting beam. You will have to balance these two facts in your connection.
Mike McCann
MMC Engineering
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RE: Existing Glulam Beam to Glulam Beam Splice Connection
Bolts are not a particularly good way of carrying large loads. I would think a saddle under the supported beam with hangers attached to the face of the supporting beam using glulam rivets would be a better detail.
BA
RE: Existing Glulam Beam to Glulam Beam Splice Connection
RE: Existing Glulam Beam to Glulam Beam Splice Connection
BA
RE: Existing Glulam Beam to Glulam Beam Splice Connection
MikeMc & BA give lots of good engineering advice and I even suspect some clairvoyance on their part at times, but I suspect they are guessing on this one. Imagine how many plans, dimensions, member sizes, etc. could be drawn all meeting your description. I would vote for 'inverted steel beam saddle' detail option # 723 or uninverted detail # 67, and try to keep the cantil. length less than 12 times the back span. And, turn the custom channel flanges the other way..., no not that way.
Provide SKETCHES.... DIMENSIONS..... LOADS.... ETC.