Gutter Cross Sectional Area

Circular 70mm rectangular min.

Gutter cross sectional area.

Determine downpipe size from table 3 3 in as nzs 3500 3 the minimum size downpipes compatible with spouting of 6125mm 2 cross sectional area installed at a 1 500 gradient are 90mm diameter round or 100 x 50. The eaves gutter selected is quad spouting with an effective cross sectional area of 6125mm 2 installed with a slope of 1 500. 1 500 2mm in 1m minimum downpipe. Effective cross sectional area mm2 of eaves gutter gradients of 1 500 and steeper.

Circular 80mm rectangular min. Refer to the table below for the minimum round and rectangular downpipe size for the quad gutter you plan to use. Area a at 38 m. 1 500 2mm in 1m minimum downpipe.

Cross sectional area of 2835mm smallest dimension at least 50mm. Effective cross sectional area. Clause 3 5 4 in the australian plumbing code dictates that the effective gutter cross sectional area shall be taken as the area beneath a line not less than 10 mm below the overflow e g front bead gutter back or bottom of overflow slots. Cross sectional line drawing.

The following tables are intended to assist designers in determining the size of eaves gutters required in accordance with as nzs 3500 3 2003. This is an external gutter so using clause e1 figure 15 plot 38 40 m plan area on the vertical axis. Effective cross sectional area with 10mm free board. Horizontal supports shall be supported at each end and at intervals not exceeding 10 feet.

In this case the cross sectional area of a section of gutter is approximately 7 000 8 000 mm so a 125 70 mm gutter 8 750 mm will meet. Cross sectional area of 4125mm smallest dimension at least 50mm. The gutter area shown in the program is the effective cross sectional area. All stramit rainwater products confirm with or are equivalent to as2179 1.

Catchment area per downpipe based on the above flow capacity is given in table 3 1g. 79 litres min minimum recommended fall. See table 2 for allowable conductor cross sectional areas. Catchment area per downpipe based on the above flow capacity is given in table 3 1j.

Cross sectional area 8435mm. 7500mm with 15mm free board flow capacity. 112 litres min minimum recommended fall. Sum of the cross sectional area of all conductors contained in the wireway at any cross section shall not exceed 20 of the interior cross sectional area of the wireway.