October 7, 2010
Mechanical Aspects Of Plumbing Drains
Plumbing drains have caused humans today, to become accustomed to being able to just pour it down the sink. This is a modern way of thinking that we’ve come to enjoy. It’s easy, no problem get rid of it. Lets take a moment and think about where that waste is going and how it’s getting there.
Most of us never see our plumbing drains. They hide within the walls and under the floors. Doing their Nobel job quietly. In fact the only time there ever on our mind is when there not functioning. Plumbing clogs can be easy to fix or they can seem impossible. Either way is an inconvenience.
Various materials make up our drain pipes. The sizes and lengths of these systems are varied according to the job specifications. Residential applications are primarily installed using lightweight plastic pipe and fittings. These materials are user friendly and cut installation times. They reduce the cost of labor as well as being less expensive to purchase. Plastic applications, also remove the need to solder and minimize the risk of property damage during installation.
When drainage lines are installed, it is imperative they be pitched the proper amount per foot. Normally horizontal pipes smaller then four inches around will be pitched at a rate of one quarter inch per foot. Lines four inches and larger will have an eighth inch per foot pitch. These standards have been found to best carry the solids along with the liquids as they drain. Less or more is not acceptable and will result in solids being left behind and eventually they will build up and clog the line.
Plumbing drains should be well hung according to the industry standards as well as local codes. Not installing enough hangers can lead to sags in the pipe which will collect the solid waste and eventually cause a clog. Making sure there are more then enough hangers and that they have been adequately installed to support the pipe will avoid this situation.
The new plastic pipe and fittings used today is installed using a primer first and then a glue to connect all pipes and fittings. Priming the pipe is imperative to a god bond and this operation should never be ignored when using this material. The primer prepares the materials to be bonded chemically. The glue is then absorbed into the softened material, forming a permanent liquid proof bond.
Most codes require all commercial and industrial drainage piping to be made of Metal Cast iron and copper pipes are the widely excepted materials for these applications. Cast iron pipes and fittings are normally connected to each other with the aid of stainless steel band clamps of the appropriate size. Copper pipe and fittings is used on smaller drains and these are soldered together. Installing these lines is usually a lot more work then plastic and also much more expensive initially.
Other drainage systems are made specifically to be used with toxic waste from water treatment plants or plating factories. These materials must withstand attacks from highly corrosive substances and be able to contain these substances without leaking. Stainless steel is used in some cases. Brass and schedule eighty PVC pipe, which has a thicker wall is also a material in wide use for these jobs.
Today’s world is full of things that must be drained. A simple process when all is well. A nightmare when the plumbing drain doesn’t.
Authorized licensed City of Toronto, Mississauga plumbers contractor offers drains Toronto services including repairs, installations and replacements of sinks, toilets faucets and hot water tanks.
Filed under Kitchen Remodeling by Adriana Noton