If the result is a fraction less use the next higher number.
Roof leader design.
But this isn t the whole story.
Select type of gutter to be used.
Total roof area.
Size gutter based on type peak flow and slope.
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.
During design an engineer or architect should lay out a roof drain system consistent with the structural design of the roof.
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In general roof drains are spaced equally and are located in low points of the roof or in any areas where water accumulates.
This keeps the load down to approximately 25 lbs.
This reveals that the minimum size for the leader pipe is 5.
The above result is the number of roof drains required for the building.
Section 101 5 of the ipc tells us not to reduce the pipe size in the direction of flow.
Design load the water depth or build up would be limited to 3 in.
Determine peak runoff from each roof for the design storm selected.
Each leader must be large enough to handle the volume of water to be drained the greater the leader capacity the fewer roof drains are needed.
Innovative woodworker jeremy broun undertakes repairs to his roof keeping costs down high up.
See figures 1 2 and 3.
Please note always use a safety harness barrier.
Keep the following considerations in mind for different roof types.
Leader design studio is a full service architecture firm.
558 a detail of leader pipe and downspout with underground outlet 17 558 b detail of leader pipe and downspout with splash pad 18.
Divide the total roof area by the area that one leader will handle.