Would you use this I beam ?

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I am in the process of building a overhead bridge crane. I bought some beams and they have been welded on the flanges and have a few holes cut in the web. These would be the rails and the trolleys would ride on top of them carrying the bridge. Would the cuts or the holes hurt the structural integrity of the beam? They are 16"x 36 lb h beams . The span would be 30 ft hoist capacity would be 4,000 lb . I have studied this as posted in math and layout ( and other places ) http://weldingweb.com/vbb/showthread.php...-I-Beam-Sizing.  Ran the numbers on the engineering toolbox if I have figured it right these beams would be ok. So if I weld up the cuts, and fill in the holes would they be ok in your opinion? Or should I buy new ones?
Reply:I'd weld everything up. Clean them up good.You'd be surprised what they gave us to build falsework for over passes.  Attached ImagesDon’t pay any attention to meI’m just a hobbyist!CarlDynasty 300V350-Pro w/pulseSG Spool gun1937 IdealArc-300PowerArc 200ST3 SA-200sVantage 400
Reply:Weld up the holes with 7018 stick rod and use em. Been there and done that. No issues.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720
Reply:of course holes and knicks hurts the integrety, its a matter if what your using it for - will effect its durability or preformance
Reply:Hard to tell from the pics but it looks like the holes are very close to the K area.   I personally wouldnt risk standing under it with a load but its your lifeVantage 500's LN-25's, VI-400's, cobramatics, Miller migs, synch 350 LX, Powcon inverters, XMT's, 250 Ton Acurrpress 12' brake, 1/4" 10' Atlantic shear,Koikie plasma table W/ esab plasmas. marvel & hyd-mech saws, pirrana & metal muncher punches.
Reply:Come on, it's only a crane...What's the worst that could happen? IAMAW Local 330Airco 300 AC/DC HeliwelderAirco Dip-Pak 200 with Profax spool gunPowr-Kraft AC225Everlast PowerArc 200stBuffalo Forge No.21 drill pressSpeedglas 9100xxAirco, Oxweld, Purox, Victor torchesLincoln Ranger 8
Reply:Originally Posted by CEPI'd weld everything up. Clean them up good.You'd be surprised what they gave us to build falsework for over passes.
Reply:Weld-one   I believe you have H/M Beams, and not an S Section - S is for shaped section, aka I Beam.  I Beams have a tapered flange like common channel [15 degrees], and trolley wheels are corresponding tapered to carry the load to the web.There are trolleys for W Sections, so be differential.Your Beams appear to be M Sections, and have the lightest load capacity due to torsional twisting. http://www.constructionknowledge.net...ural_steel.phpOpusLast edited by OPUS FERRO; 02-14-2014 at 03:06 AM.Reason: inarticulate articles
Reply:thanks for the link opus that was interestingMiller thunderbolt 250Decastar 135ERecovering tool-o-holic ESAB OAI have been interested or involved in Electrical, Fire Alarm, Auto, Marine, Welding, Electronics ETC to name a just a few. So YES you can own too many tools.
Reply:Originally Posted by OPUS FERROhttp://www.constructionknowledge.net...ural_steel.phpOpus
Reply:Originally Posted by TozziWeldingOh my God, the crap that came out of the laydown yard was older than you