You will need 3.6 cubic yards.
For a 17' x 17' by 4" slab you will need 3.6 cubic yards. If you increase the thickness to 6" you would need 5.4 cubic yards.
A standard 8x8x16 2 core block contains about .25cf of open space
Depends on how thick the slab is, but 4" thick (.33 or 1/3 of a foot thick) would be typical. So multiply 10 x 10 = 100 square feet of area times .33(thickness in feet) equals 33 cubic feet. A 90 lb. bag contains about .66(two thirds) of a cubic foot of concrete, so you would need about 1 1/2 bags per cubic foot or 50 bags for 10'x10'x4"
the spacious factor set in a space and or in space.
you'll need 24.69 cubic yards, That's 4000 * (2/12) / 27 This is because there's 12 inches in one foot and 27 cubic feet in 1 cubic yard.
For a 17' x 17' by 4" slab you will need 3.6 cubic yards. If you increase the thickness to 6" you would need 5.4 cubic yards.
concrete... and space... and machines to do the work.
because there is no shelter needed to protect those instruments but they function on a open space
1.54321 cubic yards See the related link below
without knowing your climate, the best would be a crawl space with a concrete slab.
Definition of the amount of concrete that (by volume) will fill on cubic yard of space.
Concrete because you can see history and it takes up space
You can't estimate that without having a thickness. You have to be able to have an actual volume of space you want to fill up with concrete.
Does it take up space and made of atoms? Yes, concrete is matter
donkeys
Yard Crashers - 2008 Small-Space Concrete 2-3 was released on: USA: 2009
Knee brackets and clevis hangers or fish plates, threaded rod and clevis hangers or Riser clamps attached to the piping with a pipe on the lower side of the rest to give needed support