High Strength Bolt Diameters
High Strength Bolt Diameters
(OP)
What are the smallest, largest, and most commonly used A325, A490 bolt diameters?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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High Strength Bolt Diameters
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RE: High Strength Bolt Diameters
RE: High Strength Bolt Diameters
Likewise, is there a premium for 1 1/2" dia. bolts?
RE: High Strength Bolt Diameters
Personally, I have specified/designed bolts in the 3/4" to 1" range.
One of the major manufacturers of bolts and screws here in the Midwest is St. Louis Screw and Bolt CO. Their number is 314-389-7500. I don't know if they have a website or not.
Good Luck.
RE: High Strength Bolt Diameters
Hope it helps.
RE: High Strength Bolt Diameters
I have been in a snow storm, even cought out in the rain a time or two, but I'll be darned if I have ever had any of my men put a 3/4 inch bolt in a 7/8th inch hole pattern accept to help make it up! The MOST common bolt sizes in high rise construction are 3/4in. and 7/8th in. with 1" and 1 1/8" or larger in the lower floors, core column area or special applications. Most of the spandrels and some of the major girders are almost universally welded these days and the bolts are primarily for allembly purposes.
I don't know what part of the world your in---so I offer my most sincere appologies to those where the above practice may be accepted as common. No joke, are you putting me on? I have only been at this for 40 years so it is possible I may have missed something.
Rod
RE: High Strength Bolt Diameters
RE: High Strength Bolt Diameters
Acutally, I feel that mistakes can happen although many of us are ever vigilante. Well, except for the few 9-wire outfits!
Rod, what you should explain is that the raisin' gang is responsible for putting the bolts together for the pieces that they are rigging up to be raised. The connectors must rely on them to provide the correct size and number of fit up bolts. The bolt up gang is likewise fed bolts by the 'punk' who runs back and forth with a bolt list that coordinates bolts (dia, grip, etc) to specific locations. Thus, misplaced bolts can usually be traced to one or two persons. And the foreman will usually line them up real quick for wasting his time!
RE: High Strength Bolt Diameters
Again, there are good people out there who know what they're doing and do it well, and there are complete idiots out there. I've seen both.
RE: High Strength Bolt Diameters
pylko, It was posted in humor. Heck, I have seen some of the "stupidest" things in my 38 years as an Ironworker, most of which I won't say because no one would believe them.
Point of fact---The only reason I was so successful? I corrected my mistakes before anyone else could see them.(It has been said that if you meet a successful person, you may be assured that he has succeded at least ONCE!)
I know all in this forum should remain largely anonymous, but it would be "nice" to see a short bio. Just to give us an idea who we are conversing with, don't you think?
Rod
RE: High Strength Bolt Diameters
Like you said, it's only a mistake if you dont catch it before someone else does.
RE: High Strength Bolt Diameters
Rod
RE: High Strength Bolt Diameters
Serious...what about my 9-wire comment?!
Regards,
Qshake
RE: High Strength Bolt Diameters
It seems so inane today, but it wasn't then. I recall hanging W 30+ somethings on 9 wire more than a few times. We had no safety harnesses, we worked many floors above the now mandatory two floors or 25ft. above a decked floor. Lack of safety was a personal thing (second to the bottom line for some companies) and for me a tough fight to correct. We as Ironworkers have led the fight to build a world where a worker can be assured of a reasonable chance of surviving a career in the construction industry. After that "summer job" the engineering career I aspired to seemed to slide off in the distance. I do believe my education as an engineer was definately the reason for my success.
Rod
PS---John is long dead, now, but his company lives on---it is now American Bridge, and due in no small part to their superendant ( T.G.) and the California Ironworkers, a SAFE place to work.
RE: High Strength Bolt Diameters
JFB Takes me back at least 10 years to a time here in the Midwest when they erected two curved chord warren trusses (625' long, 2500 tons of steel apiece) and floated them upstream to place them on their bearings.
I've since heard the company was bought out by Kraemer Bros. Now, a spin off of some guys (those who didn't buy into Kramer)with old JFB put together a company called Rollins which is erecting two tied arch bridges (about 625' in length)that we designed and they have proposed to float them in. Of course, the tied arches have required much in the way of truss members to redirect the forces, but are presently underway right now.
Small world isn't it!
RE: High Strength Bolt Diameters
I quit one summer day in Texas when they had me land a buldle of decking on two little w6's that were wired. I may not be the brightest bulb, etc. but that was it for me.
I left and went to work for the REAL American Bridge at NORAD, the same American Bridge later bought by JFB Inc.
It IS a small world, and you are not the first person in these forums that I have found a link with!!!
Rod