Re: concrete weight

[shawl@torchlake.com (Jonathan Shawl)]

To Steve, and all concrete sub fans.
I found the following concrete and weight data at
http://www.sbsg.com/faqpage.htm
There is more charts and metric conversion data at the site.
Hope it helps.
Jon Shawl
Only "real" steel subs for me.  :-)

    Facts & Figures
     A cubic foot of sand or gravel weighs approx. 100 lb. (45 kg.) Wet
or dry
     A cubic foot of 5/8" crushed gravel weighs approx. 95 lb. (43 kg.)
wet or
     dry
     A cubic foot of concrete weighs approx. 150 lb. (68 kg.) wet or dry

     A cubic yard of sand or gravel weighs approx. 2700 lb. (1215 kg)
wet or
     dry
     A cubic yard of 5/8" crushed gravel weighs approx. 2600 lb. (1170
kg) wet
     or dry
     A cubic yard of concrete weighs approx. 4050 lb. (1823 kg.) wet or
dry
     A cubic yard has a volume of 27 cubic feet. (.76 Cubic Meters)
     Area of a circle = Radius (one half of the circle diameter) squared

     (radius times itself) times ¶(3.1416) expressed in decimal figures.

     Example: The area of circle with a diameter of 15'6" is, The
radius-
     One half of 15'6" = (7'9") 7.75 x 7.75=60.06 x (¶) 3.1416=188.68
     sq. ft.
     Volume of a cylinder = Cylinder's area, determined by the method
     above, times it's height. Example: Volume of a 16" diameter
cylinder,
     8'4" high is (16") 1/4 x .5 = (8") .67 x .67 = .45 x (¶) 3.1416 =
1.41 x
     (8'4") 8.33=11.75 cu. ft. STEVE McColman wrote:

> Does anyone know how much concrete wieghs per cubic foot???
>
>                                  Steve McColman, Vancouver Island
>
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