All-thread Rebars
All-thread Rebars
(OP)
I've seen these threaded rebars that have the same minimum diameter as regular deformed bars (i.e. #5,#6, etc), but they instead have a threaded surface.
Assuming comparable material grades, can these be used interchangeably with regular deformed bars? I guess the real question is do they development tension all the same as a regular deformed bar?
Here is a manufacturer's example.
http://w ww.william sform.com/ Threaded_B ars/Grade_ 75_All-Thr ead_Rebar/ grade_75_a ll-thread_ rebar.html
Assuming comparable material grades, can these be used interchangeably with regular deformed bars? I guess the real question is do they development tension all the same as a regular deformed bar?
Here is a manufacturer's example.
http://w






RE: All-thread Rebars
I wouldn't use these for rebar they are much more expensive for starters!
RE: All-thread Rebars
I would not use them as rebar in concrete either.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: All-thread Rebars
I was going to use them on big utility poles that were already fab'd and the design loads changed. The poles checked out fine but the anchor rods needed to be larger or a higher strength. The holes were already in the base plates and they were galvanized. I was going to go to those rods rather than have high strength anchors fab'd the traditional way.
RE: All-thread Rebars
These high strength all-thread bars are commonly used as micropile reinforcing around here.
RE: All-thread Rebars
The threads vs the deformed bar was looked at, as mentioned above there is no note that the Gr 75 bar meet the standards, but we felt comfortable with the threads for the grout.
I did not hear much concren over the increased costs, but I was lucky enough to be working with the owner and contractor together to develop a solution t the low head clearance.
RE: All-thread Rebars
While primarily marketed first as formwork materials compatible with remaining in place, these threaded bars have been used for reinforcing for some time.
They should not be confused with standard coil rod or threaded rod and special care should be taken to recognize challenges with the format - such as challenges in bending the bar as noted on the Williams link above.
RE: All-thread Rebars
Anyone know how available they are nationwide?
RE: All-thread Rebars
Where in the above link does it say that the threads conform to A615?
RE: All-thread Rebars
RE: All-thread Rebars
RE: All-thread Rebars
I would assume you could get heat numbers and tthe like if you contacted them.
The data they show is more than what one would commonly find from stock bar suppliers (online), but they are working their unique deformation patterns in a similar fashion. Bars are available with threading that looks almost identical to common deformations, but does thread into special couplers and nuts.
I've not read it recently, but it is probably worth all of our time to reacd the ASTM specs we call to.
RE: All-thread Rebars
Dik
RE: All-thread Rebars
RE: All-thread Rebars
What is it about the threads of these bars that allows for the tension development into concrete that regular threaded rods do not get?
RE: All-thread Rebars
RE: All-thread Rebars
RE: All-thread Rebars
Dik