Weight of H14x89 beam?

Question

I need to calucalate the weight of this bridge project. I'm just making sure I'm right. Is an H14x89 55' total weight 4,895 pounds?

Answer 1

I'm getting something right in that range, so you're probably very close.

Calculations:

W = D x L x A

where W is weight in lbs,

D is density in lbs/cubic inch (0.281 from http://wiki.answers.com/Q/What_is_the_de...

L is length in inches (55' given),

and A is area in square inches for 14X89 (26.1 from http://www.pilelineonline.com/pdfs/DFP_H...

W= 0.283 x (55 x 12) x 26.1 = 4875 lbs

There's a 0.4% difference between your answer and mine, so I'd call it good.

Answer 2

Wow, let's do this the easy way (also known as the right way)... 89 lbs (per foot) multiplied by 55 feet, 89 x 55 = 4895! You are absolutely correct.