  Space Cloth Open Area Formula 800.440.6374     Phone 360.835.7507    sales@wovenwire.com

 Opening 2 Percent Open Area = X 100 Opening + Diameter

EXAMPLE 1
Assume an opening of 1/2" and a wire diameter of 1/8"
The above formula requires that all fractions of one inch must first be converted into their decimal equivalents therefore:
The opening of 1/2" = 1 divided by 2 = 0.50"
The wire diameter of 1/8" = 1 divided by 8 = 0.125"

 1 Add the opening and wire diameter together. 0.50 + 0.125 = 0.625 2 Divide the result above of into the opening. 0.50 divided by 0.625 = 0.80 3 Square the above result (multiply by itself). 0.80 x 0.80 = 0.64 4 Multiply the result by 100. 100 x 0.64 5 The solution should be expressed as as: 64%

EXAMPLE 2
Assume an opening of 1.625" and a wire diameter of 0.244"

 1 Add the opening and wire diameter together. 1.625 + 0.244 = 1.869 2 Divide the result above of into the opening. 1.625 divided by 1.869 = 0.8694 3 Square the above result (multiply by itself). 0.8694 x 0.8694 = 0.7558 4 Multiply the result by 100. 100 x .7558 = 75.58 5 The solution should be expressed as as: 75.58% 