Roof Leader Design

Divide the total roof area by the area that one leader will handle.

Roof leader design.

During design an engineer or architect should lay out a roof drain system consistent with the structural design of the roof. Keep the following considerations in mind for different roof types. See figures 1 2 and 3. In general roof drains are spaced equally and are located in low points of the roof or in any areas where water accumulates.

The above result is the number of roof drains required for the building. Innovative woodworker jeremy broun undertakes repairs to his roof keeping costs down high up. This reveals that the minimum size for the leader pipe is 5. Leader design studio is a full service architecture firm.

Square feet that can be drained by one roof leader at the local maximum rainfall rate. Please note always use a safety harness barrier. Flat roof normally for a flat roof with a 30 lbs. We specialize in new residences coastal construction extensive renovations condominium renovations professional off.

Section 101 5 of the ipc tells us not to reduce the pipe size in the direction of flow. Select type of gutter to be used. 558 a detail of leader pipe and downspout with underground outlet 17 558 b detail of leader pipe and downspout with splash pad 18. 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.

Size gutter based on type peak flow and slope. If the result is a fraction less use the next higher number. Total roof area. Design load the water depth or build up would be limited to 3 in.

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. This keeps the load down to approximately 25 lbs.