Stormwater Roof Drainage Design

Many factors affect how quickly water drains off a roof if water drains completely and if the roof is watertight.

Stormwater roof drainage design.

Typical roofing stormwater work roof plumbing work involves a roof drainage system that collects and disposes of stormwater. Through dep approval of sew er certifications approval that the city sew er can accept the proposed discharge and. Native beds established on the green roof at dpr s five borough building on randall s island. Stormwater drainage design modern storm water design focuses on three important areas.

Often the floor plan of a building is designed then a roof is fitted over the plan. Stormwater is then carried away to either a collection point or to the graded area around the building and flows naturally away from the building. A typical commercial or multifamily residential building will utilize one of the following types of primary roof drainage. These will drain to somewhere near the center of the roof and down through the building to underground storm mains or a detention pond.

Roof drainage design by greg burn 1 october 2009 build 114 the roof on a new building needs to be more than just aesthetically appealing and able to keep the building weathertight it must also effectively collect and dispose of rainwater. A roof drainage system usually comprises gutters eaves and downpipes. The new york city department of environ mental protection dep is responsible for the city s drainage plan and stormwater management.