Lay Out the Bathroom and Drain System Mark out the whole ... to facilitate waste water flow in one direction only, and the plumbing codes specify which ones to use in particular circumstances.

A toilet has two main parts-the tank and the bowl (on many toilets, these are one piece). The bowl holds water and connects to the drain for disposing of waste water and waste.

Here’s what you need to know about frozen toilets and pipes, plus tips on thawing them out enough to get things flowing again.