Channel drain suggestions

[bullitt94]

I am looking for suggestions for floor drains for my garage project.
I am building 60 x 56 with 1/2 work space 1/2 storage ,30 x 56.
I am planning on putting hoist's on both work and storage sides on 1 end leaving approximately 30 x 26 flat. The drains would go from the work space to the storage and out the end of the building.
Would 3" channel drains be big enough?

 

[ConCretin]

Just curious. Why do you want drains in work and storage areas.

 

[Kaizen]

Open drains like that are a no go in most areas now. Call your building inspector to verify. Really any floor drain in a garage is a problem


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[theoldwizard1]

Open drains like that are a no go in most areas now. Call your building inspector to verify. Really any floor drain in a garage is a problem

Concur on the last statement !

 

[ConCretin]

I have always had floor drains in my garage and never found them to be an issue at all. I live in snow country and love the convenience of melting snow disappearing down the drain rather than creating puddles. It's also nice to be able to wash cars inside during the cold months. Unless you live in an area that restricts their use, I fail to see a downside.

I wouldn't bother with drains in a workshop or storage area where there isn't any runoff and you want flat floors.

 

[bullitt94]

As far as i know there are no restrctions in my area.
Storage area will have pex in the for for future work space expansion.
I have a small shop with out floor drains. I hate it.
In winter where is the water supposed to go after the car or truck thaws out after 2 ft snowfall or where does it go after washing the cars and trucks?

 

[ConCretin]

If you promise not to tell anyone, I'll tell you what I typically do. I run a pipe outside the building and dig a hole. I line the hole with filter fabric and fill it with stone wrapping the fabric over the top to keep the stone clean. Done.

Others will weigh in shortly with ominous warnings of gasoline leaks, catastrophic environmental damage and massive thermo-nuclear explosions. Personally I'll live with the risk of such an unlikely occurrence for the convenience of a dry garage floor.

 

[Kaizen]

As far as i know there are no restrctions in my area.
Storage area will have pex in the for for future work space expansion.
I have a small shop with out floor drains. I hate it.
In winter where is the water supposed to go after the car or truck thaws out after 2 ft snowfall or where does it go after washing the cars and trucks?

Just saying if it’s got to be inspected figure it out now. This from your state.

(4) Garage floor area wastewater.
(a) Garages for public buildings and facilities.
1. Where a drain will be installed to receive the wastewater from floor areas of public buildings and facilities on which self-propelled land, air or water vehicles can be driven, the wastewater shall discharge using one of the following methods:
a. In areas where vehicles will be serviced, the wastewater shall discharge through a garage catch basin or oil interceptor connected to a municipal sewer or holding tank approved to receive industrial wastewater.
b. In areas where vehicles will be driven or stored, the wastewater shall discharge through a floor drain equipped with a solid bottom sediment bucket, garage catch basin or oil interceptor.
2. Garage catch basins design shall conform to all of the following:
a. The holding area of the catch basin shall be watertight.
b. The catch basin shall have a minimum inside diameter of 36‶.
c. The minimum depth of the basin shall be 24" measured from the lowest portion of the trap on the outlet of the basin.


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[Chris705]

I perceive the above code as non residential based. A small oil/sand separator after the floor or trench drain will allow you to show your code officer you plan on intercepting petroleum fluids and sand. Looking at the ICC on-line codes I am surprised to not see adoption of the IRC? (Maybe why the above codes were cited by Kaizen?)
Look at Schier’s website they make small interceptors if the code officer requires one.

 

[Bopbop]

I would look at the requirements of the plumbing code. I am not sure which plumbing code you are under but most require an oil water separator if you are going to wash are repair autos in the area which has the drain. The plumbing code typically does not differ between commercial and residential buildings. You are is a grey area when you build a garage at your house with repair areas. The plumbing code would also have the sizing requirements for the interceptor. Based on the codes which I am under you would need an interceptor with 300 gallon storage.

 

[rburke65]

Well it does say “public buildings and facilities”.....

 

[Kaizen]

Well it does say “public buildings and facilities”.....

I just took a snapshot of the larger document to encourage op to check into it before he gets too far into it. He thought there were no rules in his area. He can determine if it’s an issue. I know my inspector said he would allow after I get sign off from the epa. [emoji23] For those that don’t know that would take years


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[bullitt94]

I asked about drain types and I get EPA regs? Thanks.

I'll post my address and after the slab is poured you can google it and tell me if it is perfectly square!

 

[Kaizen]

I asked about drain types and I get EPA regs? Thanks.

I'll post my address and after the slab is poured you can google it and tell me if it is perfectly square!

Why do I even try to help? Good luck


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[Bopbop]

I asked about drain types and I get EPA regs? Thanks.

I'll post my address and after the slab is poured you can google it and tell me if it is perfectly square!

Are you asking about a trench drain or an area or floor drain? The limiting factor on either is the outlet of the drain. A 3" drain can gravity flow about 30 GPM depending on the slope of the outlet piping.
With a trench drain a 3" wide trench drain will work fine. We have used them a lot in our designs. The main thing about a trench drain is to remember they will need cleaning out at times. A lot of time they are installed wider because it is easier to clean.
I was one who said to check the code requirements or your building inspections department for the requirements of an oil water separator. To many times in my 30 plus years of being in the engineering and design field have I had building owners, commercial and residential call because they have been wrote up for a code error. I seen times where a building was in use for several years and then get caught not having a grease trap or something.
I like to see people build their dream and enjoy it, not have headaches and heartburn for something so simple.
Bopbop

 

[bullitt94]

Thanks for the help.