how to specify weld size for rebar to plate
how to specify weld size for rebar to plate
(OP)
When welding rebar to plate to develop the rebar, do I need to specify a weld size, or is what I have shown on the attached sufficient?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
Download nowINTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
how to specify weld size for rebar to plate
|
RE: how to specify weld size for rebar to plate
RE: how to specify weld size for rebar to plate
Is it from the centre of the bar outward 1/4"each side?If so, how do I evaluate the effective thickness? Is 1/4" groove weld the same capacity as 1/4" fillet weld?
RE: how to specify weld size for rebar to plate
RE: how to specify weld size for rebar to plate
Agree with SAIL3 on the 5/8 concept. If you look at Table 8-2 in the AISC manual under Prequalified Flare-Bevel Groove welds for plate to tubes it provides some guidance - read the footnotes too.
Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies
RE: how to specify weld size for rebar to plate
_____________________________________
I have been called "A storehouse of worthless information" many times.
RE: how to specify weld size for rebar to plate
What I still do not know, perhaps because I do not have the AISC handbook, is how to specify the weld, and what it means.
To develop the 20M rebar (300 sq.mm or 0.465 sq. inches) I need to develop a factored force of 120 kN or 27000 pounds factored force.
A 1/4" fillet weld can develop 0.826 kN/mm of length, so 76 mm length can develop 2 sides x 76 mm length x 0.826 = 126 kN
How do I specify that for a partial penetration flare bevel weld?
Where is the weld depth measured from? If the bar is 20 mm diameter, is the depth of the weld equal to 1/2 x 20 = 10 mm?
If so, then 5/8 x 10 = 5 mm. Please let me know if that is right.
What does the digit 6 mean in your sketch?
What do you mean by backing it up with a fillet weld? Where does it go? And what size fillet?
Thanks.
RE: how to specify weld size for rebar to plate
You cannot just add the strength of a fillet weld to the flare-bevel groove weld. As an example: Link
"It is imperative Cunth doesn't get his hands on those codes."
RE: how to specify weld size for rebar to plate
RE: how to specify weld size for rebar to plate
When the effective throat is not shown on the flare bevel groove weld symbol (like ajk1's attachment), the weld is assumed to be filled flush. For reinforcing (AWS D1.4), the effective throat when filled flush is 0.4 times the bar radius. For structural steel (AWS D1.1), the effective throat when filled flush depends on weld process. For SMAW, FCAW-S and SAW the effective throat is 5/16 times the radius. For GMAW and FCAW-G, the effective throat is 5/8 times the radius. To determine the effective throat of a weld that is not filled flush, the unfilled depth is deducted from the filled flush size. For rectangular HSS, the radius is assumed to be 2 times the wall thickness.
RE: how to specify weld size for rebar to plate
RE: how to specify weld size for rebar to plate
To SAIL3 - thanks for the help. Much appreciated.