What type of cast-in-place anchor bolts are considered untorqued bolts?
What type of cast-in-place anchor bolts are considered untorqued bolts?
2
ofthesea (Structural)
(OP)
In reference to ACI 318-11, section D8.1, spacing for cast-in-place un-torqued bolts, is 4d. If they are torqued cast-in-place bolts, or post installed, they are 6d.
My question is whether all cast in place snug-fit bolts, that have a nut/washer top connection, should be defined as torqued? Or are torqued bolts only those that have a required pre-stress load.
We’ve seen many metal building manufacturers sending out designs with 4d bolt spacing, but we've argued that only nelson stud type cast in place anchors are considered un-torqued?
Anybody have any insight to this?
My question is whether all cast in place snug-fit bolts, that have a nut/washer top connection, should be defined as torqued? Or are torqued bolts only those that have a required pre-stress load.
We’ve seen many metal building manufacturers sending out designs with 4d bolt spacing, but we've argued that only nelson stud type cast in place anchors are considered un-torqued?
Anybody have any insight to this?






RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
*Hah, I deserve punishment for that one.
Maine EIT, Civil/Structural.
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
MightyEngineer: That was bad....
So.....
I worked at an orange juice plant for a little while.
I got canned.
Reason?
I couldn't concentrate
Punish away...
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
Hah, couldn't concentrate. That's punny.
Maine EIT, Civil/Structural.
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
Are you saying then that a snug tight, cast in place anchor bolt is considered un-torqued similar to a nelson stud?
ACI appendix D refers to un-torqued cast in place anchors and I wondered if they could be both nelson studs as well as snug fit threaded L bolts.
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
Maine EIT, Civil/Structural.
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
Michael.
"Science adjusts its views based on what's observed. Faith is the denial of observation so that belief can be preserved." ~ Tim Minchin
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?
I'm a believer of that too but do you have any reference to back that up?
RE: What type of cast-in-place anchor bolts are considered untorqued bolts?