Box Gutter Sump Depth

Discharge through either a rainhead or sump.

Box gutter sump depth.

The sole width of the box gutter is not to be reduced towards the outlet without a proportional increase in depth. Have a sole width which is not reduced discharge at the downstream end without. Have a minimum depth of 75mm at the high end. This will give a sump depth about 150mm.

All domestic box gutters must be a minimum of 200mm wide and 75mm deep. The depth shown of the box gutter is the depth at the upstream end. Architects and draftsmen are reminded that any roof drainage system including box gutters and eaves gutters need to be designed and installed with an appropriately sized overflow. The theoretical down pipe diameter is shown for reference purposes only.

The suggested down pipe diameter is shown for reference purposes only. Figure 1 as an alternative the top of the rainhead may be installed so that it is no higher than 50 per cent of the flow depth of the box gutter consistent with saa hb39 installation code for metal roof and wall cladding section 5 clause 5 7 3 and figure 5 7 3to prevent internal flooding or damage to the building or contents see figure 2. Have a minimum width of 300mm for commercial installations 200mm for domestic installations. 2015 3 7 4 layout e for the sump high capacity overflow device the depth of the sump hs shall be not less than 150 mm regardless of the position of the normal outlet.

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