Knowing the width of your polytunnel a and the length b, we can apply the Pythagorean Theorem* this determines the diagonal length c.
*The Pythagorean Theorem relates to the sides of a right triangle in a simple way, so that if the lengths of any two sides are known the length of the third side can be found.
It is important to ensure that when setting the corner foundations of the polytunnel that the base is set square, this can be achieved by ensuring that both diagonal measurements, from corner to corner are equal - This measurement differs for each size of polytunnel. We have listed the diagonal values for each polytunnel length within our construction booklets. Measurements provided have been taken from tube centres.
We have created this little calculator, helpful if you are constructing a polytunnel that differs from the standard sizes we supply or you don’t have our construction guide to hand.
Enter your measurements below in either Feet or Metres...
