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Raymond Sprouse
03-25-2011, 11:28 AM
I am concidering building a new lathe stand, atleast legs. I am planning on making the legs out of concrete and rebar. Is there any way that I can calculat, approximately, the weight of the legs in this picture?

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Nick Amandus
03-25-2011, 11:38 AM
Its fairly easy, just multiply the volume by the density. That being said, the density of concrete can vary. I would suggest finding the type of concrete your going to use, then try and find the density on the internet. Not sure the program your using to model the leg, but it may have a volume function to help you there. Otherwise, you can use good old high school geometry to determine the volume.

Kurt Barker
03-25-2011, 12:00 PM
I believe you'll have 2.89 cubic feet in each leg. Per the Portland Cement Association: " Density of normal CLSM in place typically ranges from 90 to 125 pounds per cubic foot".

At d= 90 , your leg would weigh about 260 lbs. At d = 125, your leg would weigh about 360 lbs.

Jim Burr
03-25-2011, 12:22 PM
Now I know why it took me 3 tries at Algebra to get out of college :p;):eek:

Raymond Sprouse
03-25-2011, 12:28 PM
Thanks guys. That helps out a lot. Oh, and I use sketchup for the drawing.