Box Gutter Sump Overflow

However by definition to have a sump somewhere along the gutter implies that there will be flow approaching the sump from two sides.

Box gutter sump overflow.

The total flow is used to size the sump and overflow. Overflow devices consider whether the discharge of the box gutter is to. Overflows in box gutter this has become a big issue in the past 18 months particularly in victoria and is outlined in a new section in the current update to the ncc. This effectively states that all box gutters must allow for 30mm of freeboard which is from the overflow point eg.

The hydraulic capacity of these overflow devices must not be less than the design flow for the associated gutter outlet and must discharge to atmosphere. The box gutter depth and the sump length are influenced by the size of the overflow. All domestic box gutters must be a minimum of 200mm wide and 75mm deep. However a wider overflow may increase the length of the sump.

Eshopps is the leading manufacturer company that specializes in aquarium filtration in the salt water industry. Making the box gutter wider will also reduce the box gutter depth. It is not necessary to use all quadrants or use vertical faces. A wider overflow needs less depth of overflow hence the box gutter depth will also be reduced.

Or c a sump with a high capacity overflow device. A a rainhead b a sump with a side overflow device. All of the above options provide overflow provision to the box gutter. 2015 3 7 4 layout.