Box Gutter Sump Depth

The theoretical down pipe diameter is shown for reference purposes only.

Box gutter sump depth. The minimum depth required for the box gutters that make up this roof drainage system is 125 mm. Sump with high capacity overflow device. These options give provisions for overflow to the box gutter. This will give a sump depth about 150mm.

The line will correspond to a minimum box gutter depth. The suggested down pipe diameter is shown for reference purposes only. 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. Deviations from the gradient must be smooth and prevent towards the outlet without a proportional permanent ponding.

The depth shown of the box gutter is the depth at the upstream end. Choose an available dp size or any other size and enter that for the calculation of the sump. Choose an available size or any other size and enter that for the calculation of the sump. Here is a step wise guide for you to help.

Box gutter gradients shall not be flatter than 1 200 for sole widths equal to or less than 600mm wide. This is a good size for the required flow. The outlet must be no further than the diameter of the outlet to the centre of the outlet.