The concrete contractor needs to create large shallow funnels around the floor drains. The size of the funnel depends on the size of the car or truck. At the very least, the funnel should be a ...

But if you have an abandoned shower in a spare bathroom or a floor drain in the basement that ... about a teaspoon for each inch of the pipe’s diameter. The floating oil forms a seal over ...

Our house has concrete slab floors, no basement or crawl. Our air conditioner and water softener used to drain to an opening in the floor in the utility closet, but the drain is stopped up.