Roof Drainage System Design

Design considerations to keep in mind.

Roof drainage system design.

A typical commercial or multifamily residential building will utilize one of the following types of primary roof drainage. Establishing a minimum slope is critical because most steep slope roofing as. There are various approaches that can accomplish this balancing act but each offers its own advantages disadvantages depending on a number of factors. It is important for architects plumbing engineers and civil engineers to work together to design a system that will properly drain rainwater from a building and site.

For most dwellings you ll find that gutters range in size from approximately 100mm diameter to 150mm diameter assuming gutters with a half round section profile and downpipes range from approximately 60mm diameter to 90mm diameter assuming circular downpipes. 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 is one of the fundamental considerations of building design. 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.