The height of water to be retained 3 8m.
Design reinforced concrete circular water tank.
The wall of the tank is designed for hoop tension.
D diameter of tank in metres.
Where p water pressure on wall.
The base of the circular water tank has a flexible joint.
Formula for hoop tension ht the formula for calculating hoop tension is ht pd 2 equation 1.
Provide a diameter of 11 5m.
Area of water tank volume height 400 4 100m 2.
Overhead on ground or underground water tanks.
Circular tank example h 16 ft d 90 ft t 6 ft grade groundwater table fluid density inside tank 65 pcf f.
The tanks can be made of reinforced concrete or even of steel.
Some important theory for circular water tanks.
2009 parts i iv.
Designof reinforced concrete watertowerandsteeltank by euripidesfajardoymaymir thesis for degreeofbachelorofscience in civilengineering collegeofengineering universityofillinois 1913.
Design of circular concrete tanks.
The tank rests on the ground.
Aci 350 recommends the allowable stress in hoop tension for grade 60 4200 kg cm2 reinforcing steel as is 1400 kg cm2.
Use m20 concrete and fe415 steel.
Aci 350 01 implies in its document that the maximum allowable stress for grade 60 4200 kg cm2 reinforcing steel is 2100 kg cm2 0 5fy.
The design depends on the location of tanks i e.
A design example for a circular concrete tank pca design method cven 4830 4434 university of colorado boulder spring semester 2008 prepared by ben blackard.