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 Posted by: Mark Kent ® 07/18/2005, 02:58:28 Author Profile Mail author Edit Hi All, I am not an engineer but was wondering if one could help me. I have an i-beam supported both ends 3100 mm apart, it is 100mm x 100mm.The eye is 5mm and the ends are 7mm thick. I need to know maxamum load (tons) from weakest point (centre)I would appreciate any help, as the maths is beyond me. Thanks in advance. Mark

 Replies to this message

 Posted by: sblack ® 07/18/2005, 09:20:25 Author Profile Mail author Edit Hey, I am pretty new to this, but I have just completed a similar project. I used a deflection equation for my analysis. (5/384) * W(L^3) EIThis is the maximum deflection at center equation. You need to know your weight(W), length(L), modulus of elasticity(E), and your moment of interia(I). You know your length, the modulus of elasticity (if steel) is about 29,000,000. I am not sure yet on the moment of interia, I will research. Try to determine weight or you can just plug in numbers and see what your deflection would be.Shane

 Posted by: Mark Kent ® 07/18/2005, 16:54:24 Author Profile Mail author Edit Thanks Shane, I have done some comparisons of similar I beams, and conservatively the beam should weigh about 17kg/meter. if we use the weight of 50kg total weight, it should be safe. i have no idea of interia. Thanks Mark

 Posted by: zekeman ® 07/19/2005, 10:59:48 Author Profile Mail author Edit What are the loads on this beam? Is it just the weight of the beam or otherwise?