Box Gutter Minimum Depth

Box gutters must be straight no bends.

Box gutter minimum depth.

I decided to use the kg martin method for sizing from the csiro experimental building notes 1978. Note it is possible in a wide box gutter for the depth to be shallower than for box gutters with a free outfall. The line will correspond to a minimum box gutter depth. Minimum box gutter depth.

Determine minimum gutter depth. Have a depth at the high end of not less than 75mm. Have a minimum width of no less than 200mm for a domestic box gutter 300 mm for commercial. Sides must be vertical.

2015 3 7 4 layout e for the sump high capacity overflow device the depth of the sump hs shall be not less than 150 mm regardless of the position of the normal outlet. Due to differences in the freeboard requirements in this instance the deepest box gutter is required and used in the program. A box gutter internal gutter parallel gutter or trough gutter is a rain gutter on a roof usually rectangular in shape. Box gutter outlets must discharge through either a rainhead or sump.

Have a minimum depth of 75mm at the high end. It may be lined with epdm rubber metal asphalt or roofing felt and may be concealed behind a parapet or the eaves or in a roof valley. Have a minimum width of 300mm for commercial installations 200mm for domestic installations. Changes are not required provided the sump side overflow device is used.

Hydraulic designers sizing roof drainage know all too well about h 2h dg and dmax which were easy to work into. Starting at the gutter gradient intersection draw a line up the design graph for a freely discharging box gutter chart in your copy of the standard. 200mm 0mm. We can manufacture this box gutter to your custom measurements.

Must have a constant slope between 1 40 and 1 200. Box gutters are essentially placed between parallel surfaces as in a valley between parallel roofs or at the junction of a roof and. As an alternative the top of the rainhead may be installed so that it is no higher than 50 per cent of the flow depth of the box gutter consistent with saa hb39 installation code for metal roof and wall cladding section 5 clause 5 7 3 and figure 5 7 3 to prevent internal flooding or damage to the building or contents see figure 2. All domestic box gutters must be a minimum of 200mm wide and 75mm deep.

Trial box gutter width the minimum width allowed for domestic projects is 200mm. From there all the calculations are built into shared parameters. Box gutters should have a minimum fall of 1. Down pipe must be vertical from sump not to the side minimum sump length is 400mm.

Sizes the depth shown of the box gutter is the depth at the upstream end. Layout box gutters must. Overflow box gutters must have independent overflow provision discharging to the atmosphere.