what size i beam do i need to hold 10000 # with a 12 span

cole05000

Posted iv/18/2009 xiv:09 (#684671) Subject: I-Beam specs

western iowa

Where can I find out how much weight a certain I-beam can concur?  I need i to hold 10000lbs across a 8' span. I need two beams around sixteen' long. I accept a nice ten ton gear and want to make a water hauler out of it.  I don't want to brand it out of forest. I have a wood i with 6     6X6s nether it and information technology gets the chore washed but its getting some age.  I'm hauling 1600 gal of water plus flat bed, chem and pump. Thanks frmrzdotr

Posted 4/18/2009 20:07 (#684917 - in respond to #684671) Subject: Re: I-Beam specs

world wide web,efunda.com

[engineering fundamentals]

BigNorsk

Posted iv/xviii/2009 20:42 (#684937 - in reply to #684671) Subject: Re: I-Axle specs

Rolla, ND

I'thousand not sure if you are talking a load of 10000 lbs per beam for a total of 20,000 or if y'all are talking 10,000 total.

Anyhow, if you are talking a 10 ton trailer to go with the x ton gear, the easiest matter to do is cheat and see what the commercial trailers are using. I recall y'all'd find that they employ something like 12" 14 lb beams or 10" 17 lb.

You can get the backdrop for wide flanged beams at http://www.efunda.com/math/areas/RolledSteelBeamsW.cfm

Then you lot need to know things like how much deflection is adequate, weight distribution and such in social club to actually figure what you lot need.

And with a trailer theres the fact it's not but a static load simply information technology goes bouncing downwards the route.

So instead of trying to figure it and ending upwardly wrong, I look upwards a couple of good trailer manufacturers and see what they use and presume they actually know what they are doing.

dko_scOH

Posted four/18/2009 21:37 (#685012 - in reply to #684671) Subject: RE: I-Axle specs

39.48, -82.98

Information technology'south a complicated question that depends on a lot of things. BigNorsk has a adept summary in a higher place.

I made some assumptions: x,000 pounds on each viii-ft I-axle, uniform loading (1600-gal tank takes up nigh of the span), mild steel, W-flange beams, four inches of end support. Let me know if any of these is out of line. And then I doubled the load for a factor of rubber of 2.0.

As an case, I used a W8x13 beam (depth = 7.99", flange = 4.00").

• (√)   shear at support = 10,052# is inside web strength, though y'all may want to add cross-bracing
• (√)   max. bending stress = 24,212 psi is well within strength of balmy steel
• (√)   max. deflection (middle) = -0.xx"

There are many other combinations that would satisfy these constraints. Once you determine the material and how much stress is immune, any beam cross-section with sufficient EI value (Young's modulus times moment of inertia) will work. Information technology'southward often easier to respond "I have this axle...volition information technology work?"
srsu99

Posted 4/xviii/2009 23:26 (#685143 - in reply to #685012) Subject: Re: I-Beam specs

Fundamental / West Texas

I would go with a 12 X 22 lbs per pes beam. eight" axle sounds a little light to me. I take 14" 10 26 lb meam equally a hoist in my shop information technology was engineered to agree 6k lbs and that is one beam and made for ovehead lifting. It is spanning 21' dko_scOH

Posted four/19/2009 01:xviii (#685217 - in respond to #685143) Field of study: Re: I-Beam specs

39.48, -82.98

I figure they used a condom cistron of 3.0 for an o/h beam? It too volition have a concentrated load, not compatible (full-length). Using that plus your numbers above, your maximum bending stress is 32,192 psi and maximum deflection is -0.84 inches. That'south actually pushing it more than my example above.

You could go heavier for the water wagon, of course, but it isn't necessary.

srsu99

Posted four/nineteen/2009 02:20 (#685239 - in reply to #685217) Subject: Distressing DKO

Cardinal / West Texas

Seems like you know quite a bit about metal.  I Just know what I have over my head.  Accept never had quite that much weight on it in the center, accept had more than that on information technology on the sides as I have 2 2 ton C&1000 electric chainfalls on the same beam.  On a trailer state of affairs I would definetly proceed the heavier side to allow for the stupor loading of route travel and traversing ditches. Oh btw the overhead axle seems to have a little scrap of camber in it when not under load.  I notice this considering my trolleys seam to roll out to the edges a little easier than rolling towards the eye.

obrienoppoichest.blogspot.com

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