Minimum Gutter Fall Victoria

Have a minimum width of 300mm for commercial installations 200mm for domestic installations.

Minimum gutter fall victoria.

This effectively states that all box gutters must allow for 30mm of freeboard which is from the overflow point eg. Eave gutters must have a minimum fall of 1 500 unless fixed to a metal fascia. Required gutter slope 1 40 to 1 200. A box gutter incorporating a lear is acceptable providing the gutter is sized in accordance with.

For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e. Measure the length of gutter needed. The minimum size required for an eave gutter is dependent on a number of factors. There is always some confusion as to how the slope affects the overall depth.

Minimum width 300 mm for commercial construction and 200 mm for domestic construction. Rainhead overflow or specific box gutter overflow must be at least 30mm below the height of the back of the box gutter. The depth shown in the calculations is at the upstream end. Working out gutter slope as a general rule gutter slope is set at 1 4 inch per 10 feet of guttering.

An eave gutter must be supported by suitably fixed brackets at the stop ends and spaced at not more than 1 2 m centres along the entire length of the gutter. The minimal slope needed for proper gutter drainage is 1 25 cm 1 4 inch for every 3 metres 10 feet of gutter. As nzs 3500 3 specifies that the minimum width of any box gutter is 200mm for domestic and 300mm for commercial constructions. Calculate the gutter slope by dividing the length of the gutter needed by 10.

This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end. Gutters must be installed with a fall of not less than 1 500 for eaves gutters unless fixed to metal fascias and 1 100 for box gutters. Attach the level string to the opposite end of where the gutters will be installed. Have a minimum depth of 75mm at the high end.

State of victoria victorian building authority 2017 published june 2017. Box gutters allowable width slope and length. Have a sole width which is not reduced discharge at the downstream end without.