Normally it is a term used for sewer and drain cleaning instead of snaking
Drain rods are plumbing equipment that are mostly used to unblock drains and sewers. Usually, such rods are made of Polypropylene (also known as poly-propane).
You should not have to clean a vent on the roof. unless you are trying to clean the waste line to the fixture below. Then you would send plumbing rods through the vent on the roof.
There are old rods, good rods, and super rods, and super is the best.
Plumbing top-out is the stage of plumbing that occurs when a home is in its frame stage. There are three stages of plumbing typically in construction. Plumbing rough (prior to the foundation being poured); plumbing topout (bringing ground plumbing up through the vents); plumbing trim (installing fixtures).
In 160 rods, there are 160 rods. This is a funny question.. ha ha ha. not.
Plumbing underwater
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Before you take on any major projects, check your local plumbing codes. The Complete Guide to Home Plumbing Plumbing 1-2-3: Install, Upgrade, Repair, and Maintain Your Home's Plumbing System Basic Plumbing Advanced Plumbing: Pro Tips and Simple Steps Popular Mechanics Plumbing & Heating Plumbing : Basic, Intermediate & Advanced Projects Home Plumbing Projects
fuel rods and control rods