Box Gutter Sump Overflow

It acts as an external overflow point to reduce water surges into the stormwater system and aid the flow of water down.

Box gutter sump overflow.

Overflow devices consider whether the discharge of the box gutter is to. A a rainhead b a sump with a side overflow device. This effectively states that all box gutters must allow for 30mm of freeboard which is from the overflow point eg. Rainheads are an essential design element for buildings where internal box or trough gutters are used.

All of the above options provide overflow provision to the box gutter. Or c a sump with a high capacity overflow device. All domestic box gutters must be a minimum of 200mm wide and 75mm deep. Intersect with chosen dp choose 125 dia.

The hydraulic capacity of these overflow devices must not be less than the design flow for the. The side with the maximum flow is used to size the box gutter. It depends on the value of ioc. Box gutter design to as 3500 3 2015.

Box gutter sump size with vertical overflow. The sump depth is not necessarily measured from the bottom of the bg. A rainhead or sump is a container located between the gutter and downpipe that aids the flow of water away from the roof. Read off sump depth 175.

If draining to a sump with a side overflow somewhere along the box gutter use this calculator. 2015 3 7 4 layout. Rainhead overflow or specific box gutter overflow must be at least 30mm below the height of the back of the box gutter. From before max flow 10l s.