From the very dawn of building construction it has been necessary to incorporate some method of gathering and discharging rainwater from the roof of a structure.
Roof drainage system design.
Establishing a minimum slope is critical because most steep slope roofing as.
Design considerations to keep in mind.
The design event used for sizing a roof drainage system will therefore not normally come out of a clear blue sky and then end equally suddenly but will have been preceded by a period of less intense rainfall.
There are various approaches that can accomplish this balancing act but each offers its own advantages disadvantages depending on a number of factors.
Roof drainage is one of the fundamental considerations of building design.
A typical commercial or multifamily residential building will utilize one of the following types of primary roof drainage.
A roof drain system s primary function is efficient water removal but in most cases it must also offer aesthetic appeal and on deck workspace.
Functioning drainage system for steep slope roofs is to maintain a minimum roof slope.
Hence this is by far the most common roof drainage situation.