Search results
Results from the WOW.Com Content Network
Needing some info on garage floor drain. Have read codes that garage floor must slope out or to a drain. Have new residential construction with attached garage. The builder installed what he identifies as floor drain. I drained the livewell from my boat in garage floor. Floor is completely flat without any slope to drain or towards door.
Does a detached garage require floor drains under the 2009 I-codes? Our local sanitary authority had always required garage drains to be connected to the sanitary sewer system, stating it is a Pennsylvania DEP requirement (not sure, I have never seen it). I just approved plans for a 3 stall garage (U occupancy) which calls for floor drains.
Sections such as R301.1.3, R301.2.2.1.1, R320.1, M1301.1, G2401.1 and P2601.1 refer to other codes either as an alternative to the provisions of the IRC or where the IRC lacks coverage for a particular type of structure, design, system, appliance or method of construction.
5 years ago, our response would have been exactly as Fatboy's. Now - we require that drain into the sewer, precisely so we CAN take those fluids to the sanitary system, rather than allow it to enter the storm drainage system (can you say EPA?). If the garage is anything other than residential - grease/sand interceptor required.
A residential garage floor can slope and drain to the outsideHowever if a floor drain is used the UPC 1016.0 could apply and a sand interceptor would be required. That is the policy of our public works department trying to minimize items getting directly discharged into sewer and storm systems.
It is usually 1/8” to 1/4” per foot. Here is the citation from the International Residential Code (IRC): R309.4: "The area of floor used for parking of automobiles or other vehicles shall be sloped to facilitate the movement of liquids to a drain or toward the main vehicle entry doorway."
If the drain is within 5 feet of a wall the pipe can be run towards the wall and a vent run up the wall. The drain can also be tied into a drain line that is wet vented. I believe you're still allowed to use a combination drain & vent, which means oversizing the drain 2 pipe sizes. It can be done, but takes some creativity.
The sewage system will be a septic system with a dosing system requirement (pumped to the leaching field). The proposed floor drain will be part of the under-slab rough-in plumbing and connected to the main run that connect to the two chambered septic tank.
I have no idea but doubt those in residential garages in NYS are inspected every 6 months. For some unknown reason, detached garages are exempt from slope or drain requirement in my jurisdiction, so I won't know.
1. One-story detached accessory structures used as tool and storage sheds, playhouse and similar uses, provided floor area does not exceed 120 sf. R309.3 Floor surface. Garage floor surfaces shall be of approved non-combustible material. R403.1.4.1 Frost Protection. Exceptions: 1.