Recent content by engtobe

nice one mate

I have calculated two diameters of a bolt to be used in a beam support using a plate at each side supported in a cradle with a hinge pin. i used shear strength and a constant load to find the diameters the reason i have two different diameters is because the plate and bolt have different...

yes i have attached it to this post

is it possible to calculate the width and thickness of a plate that is helping to support a beam when you have values for shear and bearing stress, a diameter of to bolts and the load it carries. i have tried using bearing stress = load/diameter*t and then rearanging for t but the answer is wrong.

thanks mate :)

Shear stress of bolts Diameter of bolt Shear stress of plate Load carried Bearing stress of plate Bearing stress of bolts If someone could help me it would be fantastic Thanks

Thanks for your reply you are very kind So I use allowable my factor of safety is 3 but I thought that meant the allowable divided by three not the yield how would I determine the allowable if that is the case. Or is it just my yield divided by three equals the max allowable and safe load?

i don't know whether to use the yeild srength or allowable stress to determine section sizes of a beam please help me :) thank you.

thanks again for your help I found out i can't use the tables i have to calculate everything without any dimensions just the ratios that andy posted. the penny finally dropped and I've managed to get it started.

Thanks we are lucky to have folks like yourself helping us out. I was under the illusion that it could be done without looking up a table. That is obviously where i was going wrong. guess that's my only option seeing as i don't know the dimensions. thanks again :)

an example of how to calculate a channel sections dimensions when length, yeild stress, max bending moment, load, youngs modulus, strain and max SF. are all known

anymore help for this please?