A gunite pool shell IS waterproof before plastering.
First, gunite/shotcrete is not water proof. The reason for the plaster is to make the pool water proof. You don't have to and should not water proof gunite because it will affect the bonding properties for the plaster.
Contrary to the previous answer, Gunite is in fact "waterProof" when correctly applied. Unless there are improperly prep'd cold-joints (the point at which one application has stopped for some reason -perhaps rain, slow truck turnaround, etc- and begun at a later time), a Gunite pool could virtually be "painted", providing a high steel-trowel finish was applied to the Gunite. But, Gunite pops (begins to set and cure) faster than typically appied Marblite or Diamond Bright type cementitious finishes. Actually, the Gunite "finish" surface is purposely left fairly rouch, providing a better surface to which the finish/color material may bond.
p'*average depth + sq'/.32
Increases with depth
The deepest scientist have been able to study earths interior depth is 12,262 meters
The most common shelf depth used in modern interior design is typically around 12 inches.
Pressure and temperature increase with depth within Earth's interior, while density and seismic wave velocity also tend to increase.
As depth within Earth's interior increases, the density also increases. This is because the pressure and temperature increase with depth, causing the materials in the Earth to become more compact and thus more dense.
highest near equator
Well, probably a minimum of 4' to 5' but can go to what ever depth you can attain. That min. depth is so that you do not touch the bottom of the pool if you are doing laps in a lap pool. It can be any depth you want
Depth, temperature and pressure barrier.
Adding depth makes a 3D object from a 2D shape.
Adding depth makes a 3D object from a 2D shape.
Geothermal gradient is the rate of increasing temperature with respect to an increasing depth in the Earth's interior. It is approximately 25 degrees Celsius per kilometer of depth.