Preferred trench drain layout?

[elliottw]

Hey guys,

Going to be having my concrete floor done this year in my 40x60 and in the planning stages. I would like some input and possible recommendations on what you guys did for drains. I have a 14 wide door that I would like to go in a few feet and then run a 10 ft or so trench drain parallel with the door and then slope towards it. I would be driving a Class 8 semi and front end loader tractor into the building so I am not sure how heavy duty a drain I need, something commercially rated I assume.

Anything that you guys have done in regards to drains that you wish you did or didn't do? Any brands you liked more than others?

Thanks for any input.

 

[ConCretin]

To dependably drain water, you need an 1/8" to 1/4" per foot of pitch. Less slope will inevitably result in puddles.

You need a layout that balances drainage over the larger area with slopes to adjacent surfaces. In other words, if you place your drain just inside the door and want to drain a large area to the inside, it will result in a very steep slope to the door side.

I'd skip the trench drain and place a standard floor drain in the center of the area I wanted to drain. For a typical vehicle, I'd create slope in a 10 x 20 area. I'd set the drain an 1 1/4" low providing 1/4' per foot in the short direction and an 1/8" the long way.

If you need to drain a larger area, just drop the grade accordingly. Just remember to reflect you final pitch in the sub grade to maintain a consistent slab thickness.