Epoxy Suggestions
Epoxy Suggestions
(OP)
Hello folks,
I was wondering if someone could give me some quick advice. I'm designing a partial seismic retrofit for a small two-story home - and I'd like to further fasten the existing 4X mudsill to the existing concrete foundation/stem wall. I'm assuming the following:
Cracked concrete
1,500 PSI unreinforced concrete
150 PLF max distributed uplift based on a simple seismic overturning calculation
I looked into Simpson Strong-Tie products but a lot of their values are based on f'c = 2,500 PSI and I'm not comfortable using some iterative calculation to justify lower values.
Any thoughts?
Thank you,
R
I was wondering if someone could give me some quick advice. I'm designing a partial seismic retrofit for a small two-story home - and I'd like to further fasten the existing 4X mudsill to the existing concrete foundation/stem wall. I'm assuming the following:
Cracked concrete
1,500 PSI unreinforced concrete
150 PLF max distributed uplift based on a simple seismic overturning calculation
I looked into Simpson Strong-Tie products but a lot of their values are based on f'c = 2,500 PSI and I'm not comfortable using some iterative calculation to justify lower values.
Any thoughts?
Thank you,
R






RE: Epoxy Suggestions
RE: Epoxy Suggestions
I usually assume a different 28 day strength depending on the age of the structure and the quality of the workmanship. Test results must be used to confirm this in any and all critical applications. Where you're talking about new anchor bolts for a seismic application, I'd assume a fairly low value and then recommend confirmatory tests. I would not bother to insist on the tests prior to design, but I'd make sure to keep spare capacity in the "back pocket" in case it comes in low.
Make darn sure you select a seismically rated expoxy!
RE: Epoxy Suggestions
RE: Epoxy Suggestions
RE: Epoxy Suggestions
@EngineeringEric - That was the approach I initially used, and I'm sure I can argue it but do you happen to know one that doesn't require masonry?
@ameyerrenke - I'll check out the Hilti program. I was looking around yesterday and some of the community were referencing it.
@CELinOttawa - Will do. I'll keep my eyes peeled for seismically rated epoxy. Thanks
RE: Epoxy Suggestions
RE: Epoxy Suggestions