Box Gutter Sump Depth

Choose an available dp size or any other size and enter that for the calculation of the sump.

Box gutter sump depth.

Starting at the gutter gradient intersection draw a line up the design graph for a freely discharging box gutter chart in your copy of the standard. The depth shown of the box gutter is the depth at the upstream end. This is a good size for the required flow. Choose an available size or any other size and enter that for the calculation of the sump.

The depth shown of the box gutter is the depth at the upstream end. The minimum size of a sump is 400mm x 200mm minimum width of box gutter and 150mm deep. This will give a sump depth about 150mm. Sump with high capacity overflow device.

The line will correspond to a minimum box gutter depth. The outlet must be no further than the diameter of the outlet to the centre of the outlet. Here is a step wise guide for you to help. To determine the box gutter depth is the first and foremost step for sizing components and materials for the roof drainage system which includes the rain heads and the box gutters.

The theoretical down pipe diameter is shown for reference purposes only. The minimum depth required for the box gutters that make up this roof drainage system is 125 mm. The suggested down pipe diameter is shown for reference purposes only.