The code limit is 150mm for dp s and 26 800 sq mm for flat eaves gutters the program will calculate the size and number of downpipes downspouts leaders required and the eaves gutter sizes for any roof.
Gutter sizing australia.
Total roof area also affects runoff.
Gather some basic weather information to calculate the proper size for gutters and downspouts for a house.
5 inch 5 520 square feet.
The larger a gutter downspout the more water it can drain quickly.
The gutters downpipes and overflow gdo calculator assists in developing a better understanding of the ncc volume two part 3 5 3 gutters and downpipes acceptable construction practice acp provisions.
5 inch 5 520 square feet.
Gutter downspout sizes are 3 to 6 inches.
6 inch 7 960 square feet.
You can choose a downpipe size and calculate the number required and the corresponding eaves gutter size.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
The eaves gutter selected is quad spouting with an effective cross sectional area of 6125mm 2 installed with a slope of 1 500.
Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size.
The total rainfall and how rapidly it falls will affect the runoff from the roof.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
When you are completing a gutter replacement the first point to note is that gutters come in different sizes.
Then use the information below to see what size gutter you need.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
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.
Stratco gutters are designed to minimise the risk from serious water damage to the building making stratco guttering a wise investment.
Then use the chart below to see what size gutter you need.
They can be 4 5 or 6 inches.
To use the gdo calculator enter information about the location roof design and types of overflow measures.
An inch of rain is not much but it if falls in half an hour it could flood a gutter.
Select eaves gutter and gutter slope.
However too large a gutter downspout can look unattractive.
Box gutter with rain water head at end of box gutter.
More than just functional stratco gutters are stylish and designed to form a neat finish to the edge of both domestic and commercial roofing.
