Short Anchor Bolts
Short Anchor Bolts
(OP)
I have a situation where the anchor bolts for a sign structure were set too short and with the sign fully erected, the bolts are 2-3 threads short of the top nut. Is it possible to correct this without demo of the foundation and resetting anchor bolts and pouring another foundation.






RE: Short Anchor Bolts
thread507-129232
-Mike
RE: Short Anchor Bolts
RE: Short Anchor Bolts
RE: Short Anchor Bolts
RE: Short Anchor Bolts
1. Extend by Welding a Threaded Rod
2. Use a coupling nut
3. Weld Base Plates to Rods(dont use on high strength rods)
4. Cut AB's and drill and epoxy new ones
5. Perform analysis on nut using "threads engaged"
RE: Short Anchor Bolts
http://ww
says that this "NASA Fastener Design Manual" offers a way to compute the capacity of the existing situation
http://gltrs.grc.nasa.gov/reports/1990/RP-1228.pdf
Looks like a handy publication to have around anyway.
www.SlideRuleEra.net
RE: Short Anchor Bolts
RE: Short Anchor Bolts
One of my lecturers, who has extensive practical experience, swore by epoxyied HD bolts for this reason.
What are all your opinions of epoxying instead of cast in? Some of my more experienced colleagues do not like the epoxy approach as the driller can end up hitting the main reinforcement...
RE: Short Anchor Bolts
Thanks to all!