ladder rungs made from re-bar
ladder rungs made from re-bar
(OP)
is re-bar is an acceptable material for rungs on a caged ladder
these ladders are used in a gas plant in alberta
these ladders are used in a gas plant in alberta
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ladder rungs made from re-bar
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RE: ladder rungs made from re-bar
RE: ladder rungs made from re-bar
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RE: ladder rungs made from re-bar
Dik
RE: ladder rungs made from re-bar
RE: ladder rungs made from re-bar
I can't provide an answer because the composition of the steel is unknown.
RE: ladder rungs made from re-bar
If you MUST use it for rungs,suggest you punch holes thru the side rails. Plug weld to outside and as there is no telling whats in it,E6010/6011 may work best.
RE: ladder rungs made from re-bar
Dik
RE: ladder rungs made from re-bar
I've seen rebar ladder rungs on really old stuff, but to my knowledge (remember I retired 10 years ago) rebar is legal to use in Los Angeles for only what rebar is intended for, reinforcing concrete!!!
Rod
RE: ladder rungs made from re-bar
Cannot disagree with you. 6010 is only a guess.
http://www.crsi.org/rebar/id.html
Make sure you read the "spices"
RE: ladder rungs made from re-bar
RE: ladder rungs made from re-bar
RE: ladder rungs made from re-bar
Most ladder designs I've seen specify a ladder rung design based on, for example, a 200-pound (890-N) concentrated live load and many specify all structural material to something like an ASTM A36 steel, but like Metengr, don't know what the composition of the rebar you plan to use looks like.
Do they need to be galvanized?
There may be some related codes that apply, OSHA, 29 CFR 1910 Subpart D (Walking-Working Surfaces) come to mind.
Greg Lamberson
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
RE: ladder rungs made from re-bar
If you want a non-skid ladder rung, the best choices are square bar (turned with a corner at the 12 o'clock position) and rebars (ASTM A706 is weldable, as noted above).
Joe Tank
RE: ladder rungs made from re-bar
Greg Lamberson
Consultant - Upstream Energy
Website: www.oil-gas-consulting.com
RE: ladder rungs made from re-bar
RE: ladder rungs made from re-bar
I know you fellas will know that we've seen much rebar welded to steel bars for construction use. Even seen rebar welded into the bellies of sheet pile for cofferdams.
I've never seen it in a final product.
Regards,
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RE: ladder rungs made from re-bar
A615 rebars often have very hign carbon content. While that's good for strength, it's lousy for welding. Although often successful for temporary purposes, rebar welding should not be used unless the A706 weldable grades are specified. We've seen cracked welds when using A615 rebars for ladder rungs. We simply don't permit rebars for welded ladder rungs unless they are A706 grades.
arumrao,
I doubt that SS rebars would be economical vs any grade of CS rebars.
Joe Tank
RE: ladder rungs made from re-bar
Yep, rebar is used for all sort of builds, most safely done when properly inspected. Problem is, if the inspector does not catch it, it's buried forever! I've had a passing aquaintence with rebar back in the early 60's, but I rather disliked working with it.
Joe
Rebar welding is just another special application, it's niether good/bad safe/unsafe, it just "is". Rebar welding in the Los Angeles area requires a seperate certification and welding specs. Rebar used/welded/tied, whatever, is perfectly acceptable used where rebar is supposed to be use---That is not on a ladder! That's not just my opinion, either.
Rod
RE: ladder rungs made from re-bar
1. Diameter of the rebar versus width of a ladder rung. I see problems with personnel climbing up a rebar ladder, both from the discomfort on your feet to disconfort on your hands. Not sure if this aspect is covered by any specifications, but I wouldn't be suprized. Slippage is also impacted by the size of the rung.
2. Strength. I don't refer to the strength of the material, but the strength of the ladder rung to a concentrated load. Most ladder rungrs get their strengh from the shape of the rung, something lacking in rebar.
RE: ladder rungs made from re-bar
Thanks for the additional comments and info about welding rebars. I agree, problems with rebar welding can be solved when properly addressed.
mshimko,
OSHA ladder standards cover the design load requirements for rungs, so that issue is always addressed. I believe OSHA calls for a miminum rod diameter of 3/4 inch, so a #6 or larger rod wouyld normally be required. The deformations aid in the non-slip performance.
Joe Tank
RE: ladder rungs made from re-bar
RE: ladder rungs made from re-bar
Dik
RE: ladder rungs made from re-bar
Joe Tank