Stormwater Roof Drainage Design
Slowing down water flow to reduce flooding or erosion problems downstream retaining water on the property for use in gardens as a natural filtration system.
Stormwater roof drainage design. Many factors affect how quickly water drains off a roof if water drains completely and if the roof is watertight. A typical commercial or multifamily residential building will utilize one of the following types of primary roof drainage. Native beds established on the green roof at dpr s five borough building on randall s island. Often the floor plan of a building is designed then a roof is fitted over the plan.
Separate storm and sanitary drainage systems water may accumulate on the roof because of building design and a building storm drainage system is installed which will consist of a primary and a secondary system. This form of roof drainage is preferred if a clean exterior appearance is desired. Typical roofing stormwater work roof plumbing work involves a roof drainage system that collects and disposes of stormwater. A roof drainage system usually comprises gutters eaves and downpipes.
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. Stormwater drainage design modern storm water design focuses on three important areas. The new york city department of environ mental protection dep is responsible for the city s drainage plan and stormwater management.