Humans tend to take plumbing for granted, that is until something goes wrong. Major plumbing issues typically aren’t easy to fix either, since most of the piping is buried behind walls and under concrete, so it’s important to make sure it’s done right before it’s covered up.

Juan Rodriguez, over at About.com, recently compiled his list of the most common plumbing mistakes on the job site. It’s important to note that you should make sure you understand the specific plumbing code for the jurisdiction you’re working in, as some will deviate from the Uniform Plumbing Code.

The 8 common plumbing mistakes Rodriguez identifies are:

Lack of vents and traps
Too much/too little slope
Improper amount of fixtures per plumbing vent
Wrong location or amount of clean outs
Tight space around toilets
Location of Pressure Relief Valves
Connecting dissimilar metal pipes
Wrong amount of Tee’s and Wye’s

Head on over to his blog entry to find out what kinds of problems these mistakes bring about and what you and your plumbing contractor should actually be doing.

Avoid These Common Plumbing Mistakes | Juan Rodriguez, About.com