Not just seen as a two or even three gutters cut into the gutter and down one wall into storm sewers. Of course, because the installer is advantageous to take the money for the extra running meters paved highway ...
Let's see, what is the capacity of drainage elements of different diameters depending on the area of the ramp provides an effective drainage.
Of course one could take your area of residence, to get open source values and the maximum number of monthly precipitation in millimeters (1 mm of rain is 1 liter per 1 square meter), precipitation rate in mm / h., to take into account the angle of inclination of the ramp, length, width and speed of the ramp of water, but it is we do not need, because we have taken care of the developers of roof gutters systems.
system Selection
The choice of system is based on the area of the ramp and bandwidth drain. By purchasing the gutter system, the manufacturer indicates the cross section of the pipe and the width of the gutters of the roof area. These values may vary due to small differences in sizes between manufacturers, but still they can be united and show you the big picture.
On the generalized figure I cite match the size of the drain elements with the chosen drainage system depending on the area of the ramp.
There is another rule that says that the maximum length of the gutter, from the beginning of his inclination to funnel should not exceed 12 m The basis of this requirement, -. the velocity of water chute. Since the flow of water from the slope falls on the entire length of the trough, in order to avoid water overflow during heavy showers, just to be observed this rule.
If the ramp length of more than 12 meters, but 24 m., Then to the pipe 2 is not set, use scheme "drainpipe centered slope". This is not to say that its installation is carried out exactly in the middle, and implies that at least one the length from the beginning of slope chute to funnel shall be 12 meters, and the rest falls on the second length trough.
Example: The slope is equal to 14m. You can divide this segment into 7 th and 7 th, but you can make and 12 m and 2 m, set between the slopes -... The outlet with drain pipe.
With the right choice from the data, be sure that the drainage system to cope with its task is 100%.
Good luck building!
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See also my article "Rafter system with their own hands" or "How to stand before the construction of the foundation".
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