Box Gutter Overflow Detail

Holes through the splash guard and the gutter.

Box gutter overflow detail.

Box gutters box gutters under the code come with complete overflow designs. 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. Overflow scuppers should be carefully positioned to prevent excess water from remaining on the roof if the regular scuppers become clogged. Layout box gutters must.

Support the entire weight of the gutter and sumps when full of water as well as a trafficable load at any point in the gutter and sumps. All domestic box gutters must be a minimum of 200mm wide and 75mm deep. Overflow devices need to discharge to the atmosphere in such a way as to prevent damage to buildings and property. Any box gutter relying on a pipe or a slot for overflow can get blocked.

Outlets box gutter outlets must discharge through either a rainhead or sump. The most fail safe are the ones with no ends. They should therefore be placed at an elevation higher than the regular scuppers. Step 1 drill rivet holes for the gutter splash guard drill 1 8 in.

Tim hillman enterprises scupperbox offers a wide selection of state of the art roof drain leader heads. I have been working with customers drainage issues for years and will work with you to resolve any problems you have with your roof s drainage system. Overflow box gutters must have independent overflow provision discharging to the atmosphere. This effectively states that all box gutters must allow for 30mm of freeboard which is from the overflow point eg.

As a box gutter is usually located above a room or space in a building there is an increased risk that rainwater overflow could cause damage to the building or cause loss of amenity to. A wider overflow needs less depth of overflow hence the box gutter depth will also be reduced. Making the box gutter wider will also reduce the box gutter depth. For the associated box gutter outlet.

Wind resistant box gutter detail drawing dwg 1 55 mb wind resistant box gutter detail drawing dxf 134 41 kb wind resistant box gutter detail drawing pdf 44 26 kb wind resistant chamfer gutter detail drawing dwg 1 56 mb wind resistant chamfer gutter detail drawing dxf 137 09 kb. However a wider overflow may increase the length of the sump. Rainhead overflow or specific box gutter overflow must be at least 30mm below the height of the back of the box gutter. The box gutter depth and the sump length are influenced by the size of the overflow.

So in this situation consider a larger than required opening especially if the roof is likely to catch leaves or balls.