This is a good size for the required flow.
Box gutter sump depth.
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.
The theoretical down pipe diameter is shown for reference purposes only.
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.
Have a sole width which is not reduced discharge at the downstream end without.
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 suggested down pipe diameter is shown for reference purposes only.
Choose an available dp size or any other size and enter that for the calculation of the sump.
Have a minimum width of 300mm for commercial installations 200mm for domestic installations.
Have a minimum depth of 75mm at the high end.
Discharge through either a rainhead or sump.
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.