Rainwater Roof Drain

To prevent erosion make a rock bed around the end of the tube.

Rainwater roof drain.

Surface water drainage carries rainwater and melted snow and ice from hard surfaces. The underground pipework is referred to as surface water drains and surface water sewers. Determining the exact roof area and the number of. The above sizing data is offered as a guide only.

These drains are distinguished by having higher rims. To drain water away from your home invest in a gutter system so that rainwater on the roof doesn t leak into your foundation. You also must include half of the area of any vertical walls that may divert rain to the roof. They catch rainwater as it rolls off the edge of the roof and divert the water into a downspout that dispenses it a safe distance from the foundation of the building.

Smith carefully designs and manufactures a full line of roof drains deck drains scupper drains promenade and parking area drains and more to satisfy both the artistic eye of the architect and the calculating mind of the engineer. Take the roof s total square footage and divide by the total square footage handled by one drain. Where the tube passes by the downspout from the gutter we installed a y fitting and drained the roof water from the gutter system directly into the main drainage line. The above ground system of gutters and rainwater pipes is referred to as roof drainage.

The modern roof drain is designed to drain off rainwater in the most effec tive manner possible while maintaining an aesthetic appeal because in many instances it is placed in full view of the public. As we will see in steps 3 4 the size of the roof drain lines is dependent on the square feet of the roof area being served by each roof drain. Gutters are the most commonly used and most cost effective drainage solution for flat roofs. Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application.

The first step in sizing a roof drain is to calculate the surface area of the roof that the drains will be covering as well as the average hourly rainfall rate at the building location. Screw a drain cover over the end of the tubing as it approaches daylight to keep critters out. This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table. What is the difference between a drain and a sewer.

Sizing a roof water drain. Through the years smith has attempted to satisfy both the artistic eye of. The next step is to determine each roof area that will be served by a separate leader drain pipe scupper or downspout. If you already have gutters be sure to clean them at last once a year so that debris doesn t block them and cause water to back up.