Changes

Manufacturers of perforated pipe are often able to provide the open area per meter length.   

Manufacturers of perforated pipe are often able to provide the open area per meter length.   

<math>Q_{max, p}=L\times B\times C_{d}\times A_{o}\sqrt{2\cdot g\cdot \sum d}</math>

<math>\frac{Q_{max, p}=L\times B\times C_{d}\times A_{o}\sqrt{2\cdot g\cdot \sum d}}{1000}</math>

{{Plainlist|1=Where:_d'' is the coefficient of discharge (0.61 for a sharp edged orifice),   

{{Plainlist|1=Where:_d'' is the coefficient of discharge (0.61 for a sharp edged orifice),   

*''L'' is the length of perforated pipe (m)

*''L'' is the length of perforated pipe (m)

<math>\frac{0.008\ m \times 0.0015\ m\times6}{0.03\ m }= 0.0024\ m^{2}/m</math>

<math>\frac{0.008\ m \times 0.0015\ m\times6}{0.03\ m }= 0.0024\ m^{2}/m</math>

Then the maximum flow rate per planter is calculated:

Then the maximum flow rate per planter is calculated:

<math>Q_{max, p}=8\times 0.5\times 0.61\times 0.0024\ m^{2}/m\sqrt{2\cdot 9.81\ m/s^{2}\cdot \sum 1.1\ m}=0.027\ m^{3}/s</math>

<math>Q_{max, p}=\frac{8\times 0.5\times 0.61\times 0.0024\ m^{2}/m\sqrt{2\cdot 9.81\ m/s^{2}\cdot \sum 1.1\ m}}{1000}=27\ L/s</math>