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Is H Beam available in different types of steel?Specifically, if so, which type of H Beam is the stiffest (which type of steel)?Something 6-8 inches high.Regards to all.Working on cars and bikes is my hobby, learning to weld the pieces together is my quest.
Reply:Guess you can't be bothered to do your own search?Here's a beam chart for starters;http://www.weldprocedures.com/beamchart.htmlBlackbird
Reply:As far as I know, all steel I beams and H beams are A36 steel, with a nominal yield point of 36000 psi.That said, each size of beam has its own strength and stiffness, but of course that really only has meaning in the context of the application and surrounding structure.By the way, if you are limited to a certain height beam, the heaviest H beam will generally be the stiffest and strongest. I had an application where I was trying to keep the height as low as possible, so I did a few calculations to figure out how small a beam I could use. I ended up with a 6 inch H beam that was roughly 6 inches wide, and pretty thick, the heaviest 6 inch beam made. They originally dropped off a slightly lighter H beam and I sent it back.This might help a bit. However, an engineering calculation is about the only accurate way to size an I-beam or H beam. If there is another way I would like to know it. With wood beams there are standard tables that one can use, but that mostly has meaning in regular building construction with uniformly distributed loads. Generally, standard tables are not going to be useful if you are looking at point loads, like a hoist connected to a beam.Whether you use a standard table or an engineering calculation, you need to consider the loads and understand the physics, or else you will get a wrong, and possibly dangerous, answer.RichardSculptures in copper and other metalshttp://www.fergusonsculpture.comSyncrowave 200 Millermatic 211Readywelder spoolgunHypertherm 600 plasma cutterThermal Arc GMS300 Victor OA torchHomemade Blacksmith propane forge
Reply:there is a saying about beams..deep is cheap. meaning that a light beam that is 12" tall may be equivalent calculationwise to a heavier beam that is 6" tall...but cheaper in $..i have had many discussions with structural engineers about needing more room between a ceiling and bottom of beam to fit in all the plumbing and ductwork..once the point is proven, they then switch to a heavier shallower beam.
Reply:It's possible to get beam out of other materials. I quoted some W4x13 beam out of 304 stainless (and again out of 316 once the customer changed their mind) not too long ago. The mill will make it, but be prepared to pay out the nose.
Reply:Originally Posted by raferguson. . .This might help a bit. However, an engineering calculation is about the only accurate way to size an I-beam or H beam. If there is another way I would like to know it. . . .
Reply:Originally Posted by DavidSimIs H Beam available in different types of steel?Specifically, if so, which type of H Beam is the stiffest (which type of steel)?Something 6-8 inches high.
Reply:>>Guess you can't be bothered to do your own search?<<Ouch, my goodness.Actually, I have done quite a bit or research on the web up till now, on the various sizes, the difference between I Beam and H Beam (I originally thought I would go I Beam, until I released how H Beam differs), etc.My concern is with the type of steels that may be available, and their stiffness; what I am considering to do would require H Beam with as little flex as possible over a 16 foot span.My question regarding the types of steel, is so I understand what is available (and not miss out because I did not hit the right website).Dave Powelson, I work in an office, I am on the Legal support Team for a major company; welding and related items are my hobby and I do not profess to be any kind of expert on the subjects invovled, that is why I seek help on this site sometimes.I can add this, I work with a Team of Professionals here at the office, we all agree that no question is too stupid, and if we are not sure of something we should ask. Sometimes we are just looking for assurrance, or ensuring we have not missed something; a question can sometimes lead to a discussion and/or realization that would not have happened otherwise.To all the other folks who responded, thanks for the information, you have given me a lot of food for thought and I appreciate it.Regards to all.Working on cars and bikes is my hobby, learning to weld the pieces together is my quest.
Reply:As to concerns of beam's deflection over a 16' span, the steel make-up of the beam will have little effect on this; it's mostly going to be about web thickness and height.Yes, there may be some exotic Russian Sputnik era alloy that's twice the strength of common steels, -or that stuff they picked up at Roswell- but for practical purposes, with common readily available beams, the steel's specific alloy will be of no concern.Although sometimes justified, trying to get a simple straight answer on this from an engineer is probably a $5000.00 question; maybe more with today's high paper costs. That's why for one-off simple projects, actual testing and known workable methods are most practical.Good LuckLast edited by denrep; 04-01-2011 at 12:04 PM.
Reply:Thanks denrep, I am going to go to the steel yard and take a look at some of the H Beam available.Regards to all.Working on cars and bikes is my hobby, learning to weld the pieces together is my quest.
Reply:One steel supplier here in Houston is Triple-S Steel Supply Co. Their reference book states:...."I" beams (aka Standard beams) are available in ASTM A-36 and dual A-36/A-572.....Junior beams are available in ASTM A-36....."W" beams (aka Wide Flange) are available in ASTM A-992.They don't list anything designated as an "I" beam but any of the above would look like an I if you flipped them on their side......(sorry).A-36 is 36,000 psi yieldDual A-36/A-572 is 50,000 psi. (AISC website quote "dual-certified steel, by definition, meets the chemistry and strength requirements of ASTM A572 Grade 50 ")A-992 is 50,000 psi yieldMiller 211 w/ spool gunMiller Dynasty 200DXLongevity 60i IGBT plasmaO/A w/ crappy chinese torch/gaugesSouth Bend 10K latheGrizzly 4029 10x54 millGrizzly 7x12 hor bandsawangle grnders, bench grnder, bench belt sndr7.5 hp 80gal cmprsor
Reply:I'm pretty sure the ASD manual published by AISC has all the sizes available and the load formulas for basic applications. I recommend picking up a copy if you plan to do this type of work regularly. It is quite a valuable tool.
Reply:Thanksk BTD, Fegenbush, good advice for sure.I feel confident to hit the steel yards now, thanks so much.Regards to all.Working on cars and bikes is my hobby, learning to weld the pieces together is my quest.
Reply:I took a quick look in my book just to educate myself. A W6x15 -36 ksi 14 foot span is good for 11,000 lbs. A W6x15 -50 ksi 14 foot span is good for 15,000 lbs.Dont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Exactly what is the title of the book that you were referencing? Maybe I need to buy the book. Did those numbers assume uniform loading or a point load? Interesting that there are beams available with higher yield than the standard 36000 psi. Good to know. Some of the articles that I just was reading indicate that the A-36 spec is obsolete for wide-flange beams; if that is true, if you order a wide flange it will be 50,000 psi, not 36,000 psi. However, many other shapes are likely to stay at 36000 psi. Just something else to consider when designing.RichardSculptures in copper and other metalshttp://www.fergusonsculpture.comSyncrowave 200 Millermatic 211Readywelder spoolgunHypertherm 600 plasma cutterThermal Arc GMS300 Victor OA torchHomemade Blacksmith propane forge
Reply:The numbers I posted were uniform loads.Here is the book, it is old, but I don't think steel has changed that much recently, but I could be wrong too! Attached ImagesDont pay any attention to meIm just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:This site has lots of good information too regarding sizes, thicknesses, weights, etc.:northyorkiron.comWorking on cars and bikes is my hobby, learning to weld the pieces together is my quest.
Reply:The current book is the Steel Construction Manual, 13th Edition. $250. Abe's books has a lot of older copies of the manual, virtually all older than your copy. Judging by ebay prices, your ninth edition could be worth $100.RichardSculptures in copper and other metalshttp://www.fergusonsculpture.comSyncrowave 200 Millermatic 211Readywelder spoolgunHypertherm 600 plasma cutterThermal Arc GMS300 Victor OA torchHomemade Blacksmith propane forge
Reply:Originally Posted by rafergusonJudging by ebay prices, your ninth edition could be worth $100. |
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发表于 2021-9-1 00:16:50