Box Gutter Sump Depth

This is a good size for the required flow.

Box gutter sump depth.

The depth shown of the box gutter is the depth at the upstream end. The line will correspond to a minimum box gutter depth. Choose an available dp size or any other size and enter that for the calculation of the sump. Sump with high capacity overflow device.

Box gutter gradients shall not be flatter than 1 200 for sole widths equal to or less than 600mm wide. The outlet must be no further than the diameter of the outlet to the centre of the outlet. The theoretical 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.

The suggested down pipe diameter is shown for reference purposes only. The depth shown of the box gutter is the depth at the upstream end. These options give provisions for overflow to the box gutter. 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. Deviations from the gradient must be smooth and prevent towards the outlet without a proportional permanent ponding. 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.