Connection design per NDS
Connection design per NDS
(OP)
Does anyone know if there exists software for calculating connection capacities per NDS? I'm specifically interested in dowel type connections (nails, lags etc) though something comprehensive for all connections would be welcome... Thanks






RE: Connection design per NDS
Link
RE: Connection design per NDS
RE: Connection design per NDS
RE: Connection design per NDS
I specify TEK screws weekly.
I'm struggling to imagine how you would design a spreadsheet for TEK screws.
HOWEVER - I don't know how you could explain it without a visual, AND i do NOT desire to violate ethical etiquette. SO - respectfully, perhaps this may remain a mystery to me.
I can't help but think that such a spreadsheet would be either so simple (that i'd smack my forehead) or extremely complex considering all the possible, practical parameters.
If you're able and willing to share, i'm curious.
If you prefer not, i respect the decision.
If this is an unethical request, please forgive me and have a wonderful day!
Thank you!
RE: Connection design per NDS
RE: Connection design per NDS
Just to let you guys know, I have started developing my own spreadsheet and it can do some AISI checks but it will be a long time before I develop a comprehensive understanding of these things. Meanwhile, it would be good to have a quick and dirty way to check TEKS screws that are subject to conditions outside the scope of the ESR report...
RE: Connection design per NDS
RE: Connection design per NDS
RE: Connection design per NDS
The tabulated values in the TEKS Select ESR are limited to a few applications with Fu = 58 ksi. It may be good for A36 and conservative with typical 16GA and thicker studs (Fu = 65 ksi), but won't work for typical studs less 16GA (Fu=45 ksi).
Provided the screws meet the requirements in AISI, I don't know of anything that prevents you from using the calculated values. The tabulated (tested) values in ESR-3223 are odd, why does a 1/4-14 have different pull over capacity than a 1/4-20 with the same head? My guess is scatter from a limited number of tests.