We will be buidling a reciprocal roof on a roundhouse shed this spring. The roof will be covered with pondliner and then a green roof. We would like to collect the water from the greenroof for watering our gardens.
Does anybody have a good working example for collecting the water that runs of the roof? Since it is round it is hard to work with standard straight gutters.
Anybody have ideas how to calculate the strength of a roundwood reciprocal roof? Since it will be covered with a greenroof, it will have to be able to bear a serious load. About 250kg/m2.