Garage Floor Drain Requirements

Emergency drain systems shall be independent of any other system such as plumbing drainage plumbing vent rainwater drainage subsurface drainage condensate.

Garage floor drain requirements.

The inspiration for this column came from unexpected comments about a brief mention of garage floor drains in my december 1 2019 askthebuilder newsletter. The grate shall have an available inlet area equal to at least the outlet drain for the catch basin floor drain or trench drain. Sps 321 17 shall be met. If drain tile is installed the requirements of s.

A garage can be a messy place and keeping it clean is much less complicated if you can simply wash down the floor and allow the water to run into a floor drain. Emergency drains shall be installed without traps and vents. A garage catch basin floor drain and trench drain shall be provided with an approved removable cast iron or steel grate of a thickness and strength for the anticipated loads. A garage drain is also great for rinsing and cleaning the garage floor so all the dirty water doesn t end up on the driveway.

Because the floor drain connects to the sewer system sewer gas can drift up the pipe and enter your home through the drain. Building garage floor drain installation is not easy and requires significant strength and effort. Installing a floor drain in a garage. You have to also inform yourself if such type of construction is allowed in your state.

The drain must connect to a trap that blocks the gas by catching water in a curving section of pipe creating an airtight barrier. Sps 321 20 3 3 when a concrete floor is placed on sand or gravel soils the base course may be omitted unless drain tile is installed. The drainpipes that connect to floor drains must have a minimum vent size of 1 1 2 inches. Garage floor drain ideas time tested technology.

Read the text below and consider if you are ready for such an adventure. Installing a garage floor drain is a convenient way of controlling any water that drips off your car and onto the concrete floor. Motor oil or anti freeze can penetrate through the drain and cause pollution of the environment. However the mpca underground disposal policy requires that no floor drain effluent can be disposed of on site either through drywells or on site sewage treatment systems.