Box Gutter Sump Guards

The total flow is used to size the sump and overflow.

Box gutter sump guards.

This free online box gutter calculator will calculate the size of box gutters and sumps with a side overflow in accordance with the australian plumbing code as nzs 3500 3 2003 part 3 storm water drainage. For the associated box gutter outlet. The side with the maximum flow is used to size the box gutter. Rainheads are an essential design element for buildings where internal box or trough gutters are used.

Sump with a side overflow device sumps do require an increase in the depth of flow in the box gutter and gutters are to be fitted with either. It acts as an external overflow point to reduce water surges into the stormwater system and aid the flow of water down. Dirt tends to accumulate in the box gutter. Refer to hints for box gutter design marking and cutting the sump spigot mark cut sump hole dress the cut out to neatly fit to the sump decide on the position of the spigot mark and cut the hole.

At this stage plan the connection to the downpipe. Box gutter slope slope should be within the range of 1 40 to 1 200. However by definition to have a sump somewhere along the gutter implies that there will be flow approaching the sump from two sides. It is usually advisable to install a sump guard protector with an overflow fitted to it so as you can also insure against foreign material flowing down the downpipes and minimizing a blockage in the downpipe or the storm water thus elevating the chances of a flow into the building of water egress.

The total flow is used to size the sump and overflow. Overflow devices need to discharge to the atmosphere in such a way as to prevent damage to buildings and property.