Calculating the size of a damliner required for dam lining or fish pond lining is always a challenge to farmers. A simple damliner calculator will help you solve this.
How to Calculate damliner required for rectangular reservoirs/ponds
To determine the damliner size required use the damliner calculator formula:
Length: add overall length plus twice the maximum depth width plus allowance of a meter or more on either side for overlap
Width: add overall length plus twice the maximum depth width plus allowance of a meter or more on either side for overlap
For example. Assuming you have a pond measuring 10m length , 4m width and 2.5m depth. Damliner required =
So damliner required= 17m x 11m.
Note that 2m is the allowance to allow for overlap that will ensure the damliner is properly covered.
How to calculate damliner required for cylindrical/circular reservoirs
For cylindrical tanks, just add the diameter of the tank plus twice the height plus a small allowance on either side for overlap.
Tank Diameter= 10m
L= 10m + (2×2)+ (0.5+0.5)
Since it’s a circular tank, the length equals the width, so width = 15m.
Damliner required = 15m by 15m = 225m2
Please note that circular structures use more damliners and carry less water than rectangular/square structures for the same liner size. So always strive to have rectangular or square reservoirs.
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