Engineers call these shear studs. They don't merely anchor the slab/deck to the beam. Their function is to increase the bending resistance of the beam they are welded to. If you think of a beam as acting like a paperback book, if you bend the book you will see that the pages on the outside move relative the pages in the middle, especially at the ends. The shear studs resist this movement, thus making the whole assembly stiffer. The phenomena is also called "internal beam shear". Shear studs resist internal beam shear. I you understand this you will also notice that the stud at the very middle of the beam has quite an easy job, whereas the studs at the very ends are highly stressed.
Was there a time when steel decking was not used. Like in the old skyscrapers. Did they use steel decking or was there another method used for the floor slaps.
Typically in any given deck "flute" there are two possible positions in which to install the shear stud. The point farthest from the midpoint of the joist is the "strong" position. The other (closer to the midpoint) is the "weak" position. This is illustrated on pg 11 of SJI's "Composite and Non-composite Floor Joists" PDF. You can download it for free from Vulcraft.com.
We done May I know either one shoot gun will be used for a multiple size or each size having a separate gun Kindly guide me Thanks. Engineer Kashmir khan.
They're used to anchor things like decking to the structural beams. Just as you nail pictures and things to the "studs" or 2x4s rather than sheetrock, these affix things directly to the beams.
Ребят к нам,бы.. Они б все это умавыми электродами паяли б. Прикинь, все это есть на складе...но наши упорно варят обычным способом просто начальству в падлу расходники закупать.
I'm going to invent a new word here and hopefully it catches on. I notice on every single construction video there's always some union guys bitching about how its too slow or that they can do it faster. "Unitching"
Fast pace? The place I work requires 4 to 5 times what you were doing if not more. I can shoot 54 D2L 1/2 x 5 and H4L 1/2 x 5 at a rate of 54 in 4 minutes. There was no speed to this at all. I would however recommend being above what you are shooting to save your wrists.
Hunter Doxtater actually, they were damn near perfect. how straight they were is something I prided myself on. before I left that job, someone else came along who could blow my numbers out of the water which just shows how truly slow as shut the guy in the video is. based on that speed, I bet it's a union job lol
Yes he was slow but is working with studs 1.5x as thick. This means it naturally takes longer to handle them, as well as the weld time being longer for every single stud. I dont think he does this all the time, as it's a portable unit. At my shop you do it for 8 hours a day all day with a lower table lol. Obviously youd get fast.
He is very slow we have to do this on site carrying around d 6 cables setting up then still welding over 2k studs a day one bloke managed 6000 in a day its all about the numbers as our company and most others pays extra money per stud after 1500 studs the way he puts the stud in the gun is slow and weird and also placing the ferrul into the gun and putting it on the beam like that is something I've never seen in 6 years haha just leave the ferrul on the beam and put the gun with stud into it that way
Buddy Frederick .....no, the 3/4 inch round stud needs at least 13-1500 amps. The voltage can be as low as 80 volts, it’s the current not the voltage that does the work.
It is overkill but its really still in the same size class. They probably ask the same amount for the rental. Though it would be appropriate if that’s what the rental house has available, you can see it did actually load the engine so its not too big. This looks to be a Proweld ARC1850 which I think they say 76kW is minimum size. I know Truweld says 76kW on their SC1900 or what is now called the TW5700 which is the direct competitor in rectifier machines. In short, you could safely use one 1/2 the kW output. I typically use around about a 80-125kW depending on what’s available. I’ve used a doosan G70 which was 76kW rated to power a sc1900 running 1500a output with no issues whatsoever.
Curry Jameson thru the decking. it is not used for a deck fastener. now days we shoot them with a Hilti if your company can afford them. I still prefer the old school method 200 amps and reverse the polarity. 6022 and zap that bitch
@@criswise9983 hilti cleats you on about? They are the worst thing that ever happened to decking haha absolute wrist destroyers after a few hundred 😅 this way so much better
Engineers call these shear studs. They don't merely anchor the slab/deck to the beam. Their function is to increase the bending resistance of the beam they are welded to. If you think of a beam as acting like a paperback book, if you bend the book you will see that the pages on the outside move relative the pages in the middle, especially at the ends. The shear studs resist this movement, thus making the whole assembly stiffer. The phenomena is also called "internal beam shear". Shear studs resist internal beam shear. I you understand this you will also notice that the stud at the
very middle of the beam has quite an easy job, whereas the studs at the very ends are highly stressed.
+thzzzt AKA, steel beam to concrete moment connection
Was there a time when steel decking was not used. Like in the old skyscrapers. Did they use steel decking or was there another method used for the floor slaps.
Do you know what strong side means when shooting studs?
Typically in any given deck "flute" there are two possible positions in which to install the shear stud. The point farthest from the midpoint of the joist is the "strong" position. The other (closer to the midpoint) is the "weak" position. This is illustrated on pg 11 of SJI's "Composite and Non-composite Floor Joists" PDF. You can download it for free from Vulcraft.com.
ya obviously you had to Google it because you have been doing it the wrong way....sorry
i make these for nelson. getting the flux ball in the stud can be an absolute nightmare
thats some pretty clean welds
I'm curious to know if the comintator is the boss ! If so wow! You got to know the job before you can tell someone else to do it.
1500 AMPS---not watts’………you need to know this stuff!!!!
We done
May I know either one shoot gun will be used for a multiple size or each size having a separate gun
Kindly guide me
Thanks.
Engineer Kashmir khan.
I think this can do several common sizes.
Where would I find an attachment for a welder like this? Googling it just shows the ones used in car shops for dent repair
Zarina Romanets in Las Vegas there was a rentalcompany just for stud welding. Don't know if you'd find anything like that though. Maybe Red-e-arc?
Thanks for the reply! After asking around I found a supplier for the Puget Sound that deals in Nelson Studs specifically
MIKE AND I GOT STONRD AT LUNCH HAHA
Aye fire that man and hire me to do that I coulda shot 100 in the span of this vid 😂
They're used to anchor things like decking to the structural beams.
Just as you nail pictures and things to the "studs" or 2x4s rather than sheetrock, these affix things directly to the beams.
No. Wrong. The studs connect the concrete to the beams. There just shot through the deck.
Can this gun be used for a 1m Nelson deformed bars?
did you know the settings for inside angle?
Ребят к нам,бы..
Они б все это умавыми электродами паяли б.
Прикинь, все это есть на складе...но наши упорно варят обычным способом просто начальству в падлу расходники закупать.
I'm going to invent a new word here and hopefully it catches on. I notice on every single construction video there's always some union guys bitching about how its too slow or that they can do it faster. "Unitching"
How much are these machine?
What’s the purpose of the ceramic ferrule?
I believe it makes the weld have good form as well as shielding it and letting it cool slower. Also you dont have to wear a welding helmet
It contains the weld.
Yeah holds the weld in otherwise it would just spray everywhere
but the primary reason for the shear stud is to hold the concrete on the deck
VINCENT OGBONNAYA in this case it is a vertical beam encased in concrete. This adds strength to the whole structure.
I was just getting ready to ask what the use of stud welding was--you just answered my question! :)
Ok.
DeCall, what about the horizontal floor beam deck covered with a corrugated steel sheets.
Horizonal floor beam deck is also OK
Fast pace? The place I work requires 4 to 5 times what you were doing if not more. I can shoot 54 D2L 1/2 x 5 and H4L 1/2 x 5 at a rate of 54 in 4 minutes. There was no speed to this at all. I would however recommend being above what you are shooting to save your wrists.
ya I bet they are crooked as fuck and you don't know what strong side is
Hunter Doxtater actually, they were damn near perfect. how straight they were is something I prided myself on. before I left that job, someone else came along who could blow my numbers out of the water which just shows how truly slow as shut the guy in the video is. based on that speed, I bet it's a union job lol
This (54 in 4 mins is impressive. What was the STUD WELDING MACHINE that you used ? What is the most important thing to achieve this speed ?
Yes he was slow but is working with studs 1.5x as thick. This means it naturally takes longer to handle them, as well as the weld time being longer for every single stud. I dont think he does this all the time, as it's a portable unit. At my shop you do it for 8 hours a day all day with a lower table lol. Obviously youd get fast.
He is very slow we have to do this on site carrying around d 6 cables setting up then still welding over 2k studs a day one bloke managed 6000 in a day its all about the numbers as our company and most others pays extra money per stud after 1500 studs the way he puts the stud in the gun is slow and weird and also placing the ferrul into the gun and putting it on the beam like that is something I've never seen in 6 years haha just leave the ferrul on the beam and put the gun with stud into it that way
Can we weld this shear stud in shop? or only weld on site?
anywhere you have a stud gun welder you can weld em
Ah, I was thinking of Nelson studs, but perhaps I was mistaken.
I'm new to the industry, so sorry if I made a mistake :(
Dear Thomas how flux is loaded to studs
Seems like overkill on the power supply. Many Nelson Stud units run at less than 1000amps at 480 volts
Buddy Frederick .....no, the 3/4 inch round stud needs at least 13-1500 amps. The voltage can be as low as 80 volts, it’s the current not the voltage that does the work.
3/4 studs with thru deck ferrals. I run 1950 amps. and.888. of a second
It is overkill but its really still in the same size class. They probably ask the same amount for the rental. Though it would be appropriate if that’s what the rental house has available, you can see it did actually load the engine so its not too big.
This looks to be a Proweld ARC1850 which I think they say 76kW is minimum size. I know Truweld says 76kW on their SC1900 or what is now called the TW5700 which is the direct competitor in rectifier machines.
In short, you could safely use one 1/2 the kW output.
I typically use around about a 80-125kW depending on what’s available. I’ve used a doosan G70 which was 76kW rated to power a sc1900 running 1500a output with no issues whatsoever.
1000 amps at 480v is pretty much spot on for clean beam welding.
When shooting through metal decking, it's closer to 1500 amps.
What are these studs for? Also why are they welded onto decking ?
Curry Jameson thru the decking. it is not used for a deck fastener. now days we shoot them with a Hilti if your company can afford them. I still prefer the old school method 200 amps and reverse the polarity. 6022 and zap that bitch
@@criswise9983 hilti cleats you on about? They are the worst thing that ever happened to decking haha absolute wrist destroyers after a few hundred 😅 this way so much better
Ya how do you shoot 8 inch studs fucking square? I cant get it.
Why would you do that at face level
He's actually 3 feet tall
@@DeCallThomas what I meant was iron workers stand on the iron.
Ear rape incomeing