DESIGN of EAVES GUTTERS, BOX GUTTERS & DOWNPIPES

to the Australian National Plumbing Code AS/NZS 3500.3


Diagramatic of eaves gutter and downpipe

DOWNPIPE AND EAVES GUTTER CALCULATOR
Valley gutters, generic rain water outlets for flat roofs.

Simplified App for Android Phones


Diagramatic of Overflow over the back of eaves gutters

box gutter with RWH at end, diagramatic
BOX_GUTTER WITH RAIN WATER HEAD
AT END OF BOX GUTTER. Simplified

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.


Rainwater head at the end of a box gutter, With allowance for vertical faces
BOX_GUTTER AND RAIN WATER HEAD
AT END OF BOX GUTTER

Allowance for vertical faces and catchments on both sides of box gutter.


Sump in a box gutter diagramatic with side overflow
BOX_GUTTER AND SUMP
WITH SIDE OVERFLOW

Allowance for vertical faces and catchments on both sides of box gutter.

Sump in Box Gutter with a vertical overflow
BOX_GUTTER AND SUMP
WITH VERTICAL OVERFLOW

Allowance for vertical faces and catchments on both sides of box gutter.


storm water pipe diagramatic

PIPE_SIZE CALCULATOR
Including "Charged" Downpipes and pipes draining to tanks, watercourses etc.

Example Storm Water drainage plan



FULL_STORM WATER NETWORK CALCULATOR
Including Rectangular Pipes and splitting flows into multiple pipes, especially when entering Kerbs etc.
Starts with 40 pipes, but can drain those pipes into the next 40 pipes and so on.

Overland flow Diagramatic


1 in 100 year Intensity rainfall Map of Australia

Intensity, Frequency, Duration curves. For Australian towns.
Intensity, Frequency, Duration curves. For New Zealand.
These sites require the Latitude and Longitude of the job location.
These Coordinate are found by a google search of " 'your required location' coordinates"
Learn how to do it here. (a short video).


Charged Pipes

Charged pipes to a Rainwater Tank

CHARGED PIPES
Allows for any number of downpipes an up to 40 pipeline sections.
Calculates all the flows and pipe sizes.


how to design a spreader to a lower roof

SPREADERS
Calculates the area of an upper roof allowed to drain onto a lower roof via a spreader.



WATER PIPE SIZE CALCULATORS
Size every pipe in your project in seconds with just 3 clicks.
Start pressure, Length to the worst case, and height difference.
3 more clicks will get a pump size (if req'd).



Copyright 2024 Ken Sutherland