Box Gutter Sump
Box gutters must be straight no bends.
Box gutter sump. The minimum size of a sump is 400mm x 200mm minimum width of box gutter and 150mm deep. Down pipe must be. It is easier to mark and cut the spigothole prior to fitting the sumpinto the box gutter. The spigotcan also be fitted from inside the sump this allows the downpipe to be fitted up to the sump.
The theoretical down pipe diameter is shown for reference purposes only. Code box gutter requirements the minimum width allowed for domestic projects is 200mm. For the associated box gutter outlet. This is a good size for the required flow.
Sides must be vertical. The depth shown of the box gutter is the depth at the upstream end. Must have a constant slope between 1 40 and 1 200. Choose an available size or any other size and enter that for the calculation of the sump.
For commercial projects the minimum allowable width is 300mm. The mod tec gutta sump can be fit ted simply from within the fitted box gutter this assists the accurate locating of the sump.