Hello,
I am not a frequent poster, but have learned alot from all of you…thankyou!
Hoping you can help me out. I am building a timber/icf home on the west side of Georgian Bay, Ontario. I am the GM. I have a framer/timber sub for the roof we are installing. 2:12 pitch.
My question is how to tie the timbers into the glulams without comprimising their structure (the glulams are engineered for loads).
The engineer does not want to drill holes in the glulams, since they are close to max load. The roof sub does not want to use nails/lags as he is concerned that wind/upload would cause vibration and loosen the fasteners.
I am thinking of banding the timbers/glulams together with steel strapping, something visually pleasing.
Has anyone done something similar and are there any suppliers that do this sort of thing?
I attached some pics and can provide more.
Thankyou in advance,
Mike Noble
Replies
Simpson has a line of heavy steel connectors made for connecting large beams. I've seen them in some commercial post and beam buildings, they are usually painted black. Of course they require bolting or lagging to the members. If the engineer has concerns with a few bolt holes in those glulams, someone didn't do their homework when they were designing this building.
Alternately, it seems like a couple of structural lags coming down through the top of the rafters into the beams should be sufficient. GRK's RSS lags are pretty rugged fasteners.
Thanks,
I am meeting with a commercial simpon vendor this morning and will ask.
Mike
What DOES the engineer suggest if you can't drill the glue lams for through bolts into hangers?
Seems it is his problem to solve if he engineered this project..
I used to build Lindal Cedar homes. Some were similar to your picture. We used a 90 degree bracket (maybe 3" x 2" x 3/16 thick +-) This bracket had two holes and connected via lag bolt. Nails won't do it IMO.
With a little artistic ingenuity you can design and build cedar covers for the exposed brackets so they don't show......or paint them black and fit them into the overall look........
Thanks,
I will run this by the engineer today.
Mike
Simpson will custom build any connector the engineer likes - for a cost.I am thinking that the GRK lag head screws are just the ticket for this, but if not enough, then some angle iron on top of the glulam and side to the lumber to stitch them together is going to do it. That would be nearly invisible from below. The lags down in from above would make a hole that is in the compression zone of the glulam so if the engineer is worried about that, he doesn't know his stuff and there is a caution flag waving over his head
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