1 atm = 14.696 psi = 101325 pascals = 1.01325 bar
One psi makes a column of mercury rise 51.71 millimeters, based on the measurement that one psi is approximately 6.894 KPa. This is equivalent to 0.00328 feet.
A metre cube of concrete is a volume of concrete which is equivalent to the volume of a cube each of whose sides are 1 metre long.
38.2kPa equates to 5.54 psi
That's going to depend on many things you haven't mentioned, including how deep/thick you need it to be.
What is equivalent to c40 grade material
st4 is just a standard type concrete probably comparable to c40 structural concrete, pav 2 is the equivalent to c35 concrete with air bubbles, mostly used in paving works
1:1.5:2.5
The concrete that gives a compressive strength of 40 N/mm2 when its cube is tested.
500psi
3000 psi concrete weighs Approx 3900 Lb/yd3
Concrete 3000 psi means that the concrete has a compressive strength of 3000 pounds per square inch (psi). This measurement indicates how much pressure the concrete can withstand before cracking or breaking. A higher psi value generally means stronger and more durable concrete.
It is exactly 4351 psi but generally referred to as 4500 psi.
If is standard concrete it is usually 3000 psi mix
3000 psi 3500?
rades
Generally speaking, concrete is rated anywhere from 2000 psi to 10,000 psi. Of course if you do NOT use the proper ratio of aggregate (usually sand) to cement and water you can make concrete that is even weaker. When concrete is ordered from a delivery company, you specify the strength of he mix or pour that you want.