Box Gutter Sump Overflow

Method used the method used is based on the flow chart fig 3 1 as nzs 3500 3 2003 downpipe and sump depth from fig i4 with minimum sump depth 150mm.

Box gutter sump overflow.

All domestic box gutters must be a minimum of 200mm wide and 75mm deep. 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. The side with the maximum flow is used to size the box gutter. Or c a sump with a high capacity overflow device.

A rainhead or sump is a container located between the gutter and downpipe that aids the flow of water away from the roof. 2015 3 7 4 layout. From before max flow 10l s. Rainhead overflow or specific box gutter overflow must be at least 30mm below the height of the back of the box gutter.

The hydraulic capacity of these overflow devices must not be less than the design flow for the. All of the above options provide overflow provision to the box gutter. It acts as an external overflow point to reduce water surges into the stormwater system and aid the flow of water down. This effectively states that all box gutters must allow for 30mm of freeboard which is from the overflow point eg.

Box gutter sump size with vertical overflow. It depends on the value of ioc. Read off sump depth 175. Overflow devices consider whether the discharge of the box gutter is to.

The sump depth is not necessarily measured from the bottom of the bg. If draining to a sump with a side overflow somewhere along the box gutter use this calculator. A a rainhead b a sump with a side overflow device. Intersect with chosen dp choose 125 dia.