2009 parts i iv.
Design reinforced concrete circular water tank.
The design depends on the location of tanks i e.
Overhead on ground or underground water tanks.
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.
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.
Where p water pressure on wall.
The tanks can be made in different shapes usually circular and rectangular shapes are mostly used.
Area of water tank volume height 400 4 100m 2.
Circular tank example h 16 ft d 90 ft t 6 ft grade groundwater table fluid density inside tank 65 pcf f.
The base of the circular water tank has a flexible joint.
The design of reinforced concrete water tank is based on is 3370.
Some important theory for circular water tanks.
The tank rests on the ground.
The tanks can be made of reinforced concrete or even of steel.
Formula for hoop tension ht the formula for calculating hoop tension is ht pd 2 equation 1.
Designof reinforced concrete watertowerandsteeltank by euripidesfajardoymaymir thesis for degreeofbachelorofscience in civilengineering collegeofengineering universityofillinois 1913.
Aci 350 recommends the allowable stress in hoop tension for grade 60 4200 kg cm2 reinforcing steel as is 1400 kg cm2.
The height of water to be retained 3 8m.
D diameter of tank in metres.
1 design a circular water tank with flexible base for a capacity of 4 lakh litres with the tank having a depth of 4m including a free base of 200mm.
Provide a diameter of 11 5m.