anchor bolt+luck nut
anchor bolt+luck nut
(OP)
Hi All
Regarding erection of one column(Dia=3700mm, overal length=35150mm) at site,I found a problem that the bolt extention beyond the nut(thread part)is not sufficient to consider another nut(luck nut).Contractor made 2 comments:first,using spot welding between nut and top plate(anchor chair),and the second, using another nut beneath top plate.
Its my pleasure to recieve your comments about these 2 mentioned items.
Thanks in advance
Regarding erection of one column(Dia=3700mm, overal length=35150mm) at site,I found a problem that the bolt extention beyond the nut(thread part)is not sufficient to consider another nut(luck nut).Contractor made 2 comments:first,using spot welding between nut and top plate(anchor chair),and the second, using another nut beneath top plate.
Its my pleasure to recieve your comments about these 2 mentioned items.
Thanks in advance





RE: anchor bolt+luck nut
RE: anchor bolt+luck nut
do you have any experience about using "bent tab lock washer" at site?because I dont.may i have your idea about two comments mentioned by me?
Thanks a lot
RE: anchor bolt+luck nut
RE: anchor bolt+luck nut
Just i wanna know that have you ever heard about using second nut beneath the top plate of anchor chair for extension of contact surface of thread part?
Thanks in advance
RE: anchor bolt+luck nut
I am having difficulty visualizing this. If you don't have sufficient bolt length to put a second nut at the end then how will adding a second bolt under the top plate work? It seems you would then not have enough thread engagement for the final nut?
What I understand is:
NOW[right]
bolt head
top plate
column (through which bolt goes)?
bottom plate?
nut
lock nut if there was sufficient thread
PROPOSED
bolt head
top plate
nut
column
bottom plate
nut
Patricia Lougheed
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RE: anchor bolt+luck nut
I would suggest using a "bellville" washer. It's a "cone type" lock washer, semi-pricey too! Check the link below, my $0.02! ...Good Luck!
h