Box Gutter Sump Design

Box gutters must be straight no bends.

Box gutter sump design.

A slate tile roof connecting to the box gutter and then to the copper spouts. Down pipe must be vertical from sump not to the side minimum sump length is 400mm. To do this we need 3 things what is the biggest storm we should design for. All of the above options provide overflow provision to the box gutter.

Rainheads are an essential design element for buildings where internal box or trough gutters are used. Suitable for flattish roofs with little or no vertical faces or steep roofs draining to one side of box gutter only or any roof if you are in a hurry and make the necessary allowances for all catchments. The minimum size of a sump is 400mm x 200mm minimum width of box gutter and 150mm deep. To avoid problems plumbers need to calculate the hydraulic capacity of a box gutter and when designing overflow devices consider whether the discharge of the box gutter is to.

The old box gutters worked great in the day. Sizes the depth shown of the box gutter is the depth at the upstream end. The esthetics of the box gutter hid the gutter from sight which was important during that time. A sump with a high capacity overflow device.

The issue today is the copper would disappear not counting the cost to reinstall. Or c a sump with a high capacity overflow device. Must have a constant slope between 1 40 and 1 200. Sides must be vertical.

Low and behold the box gutter is rotted out. A sump with a side overflow device. Sumps are to be appropriately sized in accordance with as nzs 3500 3 with a minimum length of 400 mm and when fitted with a high capacity overflow device with a depth of not less than 150 mm when either one or two box gutters enter the sump. A a rainhead b a sump with a side overflow device.

Design a box gutter to an internal sump with a side overflow. Box gutter design to as 3500 3 2015. Design a box gutter to an internal sump with a vertical overflow. A box gutter is defined as a graded channel generally of a rectangular shape for the conveyance of rainwater within the building footprint including adjacent to a wall or parapet.

To avoid problems plumbers need to calculate the hydraulic capacity of a box gutter and when designing overflow devices consider whether the discharge of the box gutter is to.