Calculate the Dead Load on a Simply Supported Beam

[John78]

Homework Statement

A beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam.

Homework Equations

Dead Load= volume * weight of material

The Attempt at a Solution

A=100*100=10000 mm2=0,001m2

V=0,001*3=0,003 m3

Dead Load = 0,003 m3*24 KN/m3=0,072*1000= 72 N ?



Am I right with my calculations?? Many thanks:P

 

[phinds]

I don't know anything about strength of materials, but I'm puzzled by your having made a calculation based on the characteristic "a beam".

Wouldn't you get a different result if the beam were made of styrofoam than you would when it was made of steel?

Perhaps I'm not understanding what you are trying to do