Turn Buckle and Rod Design
Turn Buckle and Rod Design
(OP)
Could someone share a good reference procedure on design of turn buckles and rods?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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Turn Buckle and Rod Design
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RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
Welp, back to the drawing board?
RE: Turn Buckle and Rod Design
What are the turnbuckles and rods intended to accomplish? You really didn’t say. As Hokie mentioned the/some turnbuckles may not be rated at the same cap’y. as the rods which fit them, and of course, you should limit your design strength to the strength of the weakest link. There are several different grades, strengths and sizes of turnbuckles from different suppliers. And, I certainly wouldn’t buy my turnbuckles from the local big box store if strength was important.
RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
Once you pick the tension rod you can pick the turn buckle as well as end connections from the catalog
So all parts belong to the same 'system'
best regards
Klaus
RE: Turn Buckle and Rod Design
That may be true for light stuff, but is not typical for structural bracing.
RE: Turn Buckle and Rod Design
see here for example
http://www.mconnect.eu/en/application/practical-co...
and many others
best regards
Klaus
RE: Turn Buckle and Rod Design
That company looks like it has a well thought out system, but I imagine it operates primarily in Europe. I don't think that system or similar is typical of other parts of the world.
Anybody else here who would routinely specify these rods? They look good, but I think their application is in high end structures, airport terminals and the like.
http://www.mconnect.eu/images/Downloads/tension_ro...
RE: Turn Buckle and Rod Design
Dave
Thaidavid
RE: Turn Buckle and Rod Design
thaidavid40, are you saying you typically use only 20% of the loads specified by the manufacturer or the loads specified in the AISC manual?
RE: Turn Buckle and Rod Design
it is part of the system...
best regards
Klaus
RE: Turn Buckle and Rod Design
I'm saying, "20% of the ultimate turnbuckle capacity." Most manufacturers list their "safe working strengths" in the typical online data. If you order from them, they will supply an ultimate (usually tested) strength. Apply the 0.20 resistance factor multiplier to that number.
Dave
Thaidavid
RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
Dik
RE: Turn Buckle and Rod Design
RE: Turn Buckle and Rod Design
You said....., “The loading on this system is approx. 20 kips. The system is going in a school gym behind glass curtain walls.” That being the case, you may want to pay some special attention to bldg. drift up at the top, under load, as this relates to the rigidity of any glass and glass curtain wall system. Tie rods allow a fair amount of movement of their upper connection points before they pick up their design load, due to slack take-up, due to geometric and stress/strain length changes and this can have detrimental effects on any rigid cladding system.