Box Gutter Sump

For commercial projects the minimum allowable width is 300mm.

Box gutter sump.

The gutter collects the water and disposes of it through the drainpipe. The mod tec gutta sump can be fit ted simply from within the fitted box gutter this assists the accurate locating of the sump. A box gutter is given its name as it is usually boxed into the middle or edge of the roof. It is easier to mark and cut the spigothole prior to fitting the sumpinto the box gutter.

Box gutters must be straight no bends. The water is drained via downpipe nozzles or via a sumps downpipes built into it. They collect storm water before it is carried away by the downpipe and they also serve to catch any debris before it enters the downpipe. How much fall should i have on a box gutter.

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. Sumps are usually attached between a box gutter and the downpipe. The theoretical down pipe diameter is shown for reference purposes only. A box gutter is defined as a graded channel generally of a rectangular shape for the conveyance of rainwater within the building footprint including adjacent to a wall or parapet.

The outlet must be no further than the diameter of the outlet to the centre of the outlet. Sides must be vertical. Code box gutter requirements the minimum width allowed for domestic projects is 200mm. Box gutters are deemed to satisfy the performance requirements of the national construction code if they are certified to meet.

Typically a box gutter is trapped between two roofs that feed rainwater into it. The minimum size of a sump is 400mm x 200mm minimum width of box gutter and 150mm deep. Box gutters should have a minimum fall of 1. This ensures that there is no blockage of any kind meaning that all of your roofing accessories can function at their optimal level.

The depth shown of the box gutter is the depth at the upstream end. Down pipe must be. Overflow devices need to discharge to the atmosphere in such a way as to prevent damage to buildings and property. This is a good size for the required flow.

Sumps can be made to order but are commonly manufactured in either 100mm and 150mm depths. Sumps are attached between a box gutter and a downpipe where they collect stormwater before sending it down the downpipe. 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.

A good box gutter design will have falls along its length together with sumps to collect water before it is fed into large downpipes. A rainwater sump catches any debris or unwanted materials from travelling down the drain pipe and into any drains.