Calculate your drainage install on site.
Roof drain slope calculator.
The full flow capacity of a drain is not realized until the water reaches approximately 2 5 above the inlet in a four inch drain and 3 5 in a six inch drain.
Drain pipe slope calculator my pipe diameter is 2 5 or less.
To use this you must take the required measurements so you can input them in the required fields.
Roof pitch affects the actual area of the roof.
The roof drainage outlets and rainwater downpipes are calculated based on the design principles for gravity drainage systems established in ss525 2006 code of practice for drainage of roofs.
A calculator or table as we give below gives the number of roof drains required to drain the particular roof under design based on the parameters listed above.
The new nds app is the perfect tool for determining runoff and system requirements on the go.
How to calculate the quantity of drains required.
1 calculate the roof area to be drained.
Nds filcoten trench drains.
Take the roof s total square footage and divide by the total square footage handled by one drain.
The result is the number of drains needed.
Nds dura slope trench drains.
Here are the steps to follow for the roof angle calculator.
To size the vertical roof drain for the same parameters 5 000 square feet of room area and 6 per hour of rain consult table 1106 2 figure 3.
Nds french drain systems.
Or 12 drains required.
50 000 4 400 11 36.
Drain calculator factors which affect proper roof drainage are deck slope drain size and placement of drains.
Roof area is 200 x 500 100 000 sq.
2 estimate the roof drain outlet size you will likely use.
This drain pipe slope calculator will calculate the slope and total drop fall of a drainage pipe over a specified length of pipe.
Roof pitch is a determining factor for cost of the roof as well as the roof area and the type of materials used.
It affects walkability as well as drainage and roofs in areas of high rain or snowfall tend to have steeper pitches.
4 roof drain 3 determine your building s location on the above map to determine the approximate rainfall as measured in inches.
This roof pitch calculator or roof slope calculator is a simple easy to understand tool to use when you need to perform construction work in your home.
