What is pipe rehabilitation?
Apr 13, 2022 · Aluminum pipe is also a popular choice for use in creating handrails, and a host of fittings for structural applications are available, both weldable and slip on/clamp-on varieties. Red brass fittings such as brass pipe nipples are available corresponding to pipe diameters, and these are often assembled by soldering or brazing. Concrete
What are pipe fittings?
These include: the length, depth, and diameter of the pipe; the types of defects needing correction; pipe bends and changes in grade; the number and locations of potential access points such as manholes or clean outs; the number and location of nearby utilities and other pipelines; the number of fixtures and appurtenances that need to be replaced in the course of rehabilitation; …
Which pipes have the highest priority for pipe rehabilitation?
Apr 01, 2001 · Pipes with significant soil voids behind leaking joints or those with pipe under-drains may be better suited to other rehabilitation techniques. Acrylamide and Urethane grouts are the most common on the market, with various additives available to increase/decrease setting times and increase strength, flexibility and durability. Internal Pipe Seals
What are the different types of pipe fittings used for handrails?
Pipe Rehabilitation Methods Die Drawing Technique For all close-fit PE lining methods, during the reduction process the outside diameter of the PE100 pipe is reduced to less than the minimum bore diameter of the host pipe. Once the PE100... Close Fit Lining: Roller Reduction (Rolldown)
Can you use PEX fittings on PE RT pipe?
Easy to work with As noted above, PE-RT is available in the same copper tube SDR 9 dimensions as PEX and uses most of the same fittings and installation tools. “Some of the fittings are going to be manufacturer specific,” noted Marshall. However, all crimp and press fittings used with PEX also work with PE-RT.Dec 10, 2018
Are PEX-A and PEX B fittings interchangeable?
Method 3: Threaded Transition There are two parts to this transition: the PEX-A MIP adapter and the PEX-B FIP adapter. These parts will thread together and allow you to join PEX-A to PEX-B. The PEX-A side will require an expansion ring while the PEX-B side requires the crimp ring.Apr 5, 2021
Do PEX fittings work for PVC?
There is no traditional fitting that can connect PEX directly to PVC. Most push-fit fittings such as SharkBites work with PEX, copper, and CPVC — but not with PVC pipe (Schedule 40, Schedule 80, DWV, etc.), but there is a recently developed SharkBite fitting that can do the job.Jun 20, 2013
Can PEX be used with compression fittings?
Compression fittings for PEX operate in much the same way as compression fittings for copper or other plastic piping. The fittings consist of three parts: a compression nut, a compression ring, and a compression insert.Jul 19, 2019
Is SharkBite PEX A or B?
SharkBite non oxygen barrier pipe is manufacture as PEX-B and SharkBite oxygen barrier pipe is manufactured as PEX-C.
How do you tell if PEX is A or B?
Again, the main distinction lies in the manufacturing method, which is what assigns an A, B or C to PEX. PEX A is made using the Peroxide, or Engel, method. PEX B is formed using Silane, or Moisture Cure, method. This is the most common PEX pipe type out there.Nov 6, 2020
Should I use PEX or copper?
PEX pipe is not only cheaper than copper but more durable too. PEX is immune to corrosion and mineral build-up, and it's not affected by electrolysis, which can cause small pinhole leaks in copper piping. Copper pipes can last anywhere from six months to the life of a building.Jan 7, 2020
Which is better PEX or CPVC?
CPVC is More Effective at Maintaining Water Quality than PEX Third party studies show that CPVC piping, such as FlowGuard Gold pipes and fittings, consistently demonstrate a lower risk of biofilm formation than PEX.
Where should you not use PEX?
PEX can't be installed in high heat areas. You can't install PEX in high heat areas like near recessed lighting. This also means you can't connect PEX directly to a hot water heater, but you can use a connecting material to do this.Mar 17, 2022
Is PEX crimp or clamp better?
If you are looking for a fast and more secure connection that will stand the test of time, crimp tools are your better option. But if you want more flexibility without working more, go for PEX clamps.Feb 2, 2022
What fittings can be used with PEX A?
0:153:41PEX fitting options explained - YouTubeYouTubeStart of suggested clipEnd of suggested clipCrimp fittings are the most commonly used type of fitting. And most competitively priced so it'sMoreCrimp fittings are the most commonly used type of fitting. And most competitively priced so it's easy to find in most supply houses home improvement stores or online retailers.
What's the difference between PEX and PB barrier pipe?
What is the difference between Speedfit PB (Polybutylene) and Speedfit PEX pipe? The PB is more flexible than PEX, as there is less memory in the coil. Both versions are barrier pipes and can be used for the same types of installation.Jan 18, 2018
What is pipe bursting?
This method uses a pneumatic, hydraulic, or static bursting tool to force an in-place exp ansion of rigid pipe until its walls crumble and are pushed further out beyond its original diameter.
What is ground penetrating radar?
Ground penetrating radar uses an electromagnetic (radio wave) antenna tuned to a frequency that can penetrate soils, rock, concrete, ice, and other common natural and manmade materials, allowing for the creation of a three-dimensional underground survey of the work zone.
What are the issues that limit horizontal freedom of movement?
Automobile traffic especially represents a significant safety issue that can be avoided with a smaller work footprint at the surface. Buildings and other infrastructure such as bridges, and sign, power, and communication posts, will also limit horizontal freedom of movement.
What is the difference between rehabilitation and repair?
Rehabilitation, on the other hand, is another thing entirely: the act of restoring something to its original state. When age or physical damage require it, pipe systems can need a complete rehabilitation instead of standard maintenance or necessary repairs.
What is maintenance and repair?
Maintenance is performed to minimize the odds of having to perform repairs, and is performed at regular planned intervals. Repair is unscheduled and performed when necessary.
Why is pipe rehabilitation important?
Horizontally, pipe rehabilitation work is constrained by the need to avoid blocking traffic flows, both vehicular and pedestrian. While automobile traffic can be detoured and sidewalks closed to people, it is often necessary for reasons of safety and commerce to keep these arterials moving as much as possible.
When does pipeline rehabilitation occur?
Rehabilitation, on the other hand, usually occurs at the end of a long cycle of a pipeline’s operational lifetime. Evidence of age and decay of a pipeline accumulates with each repair cycle and can be estimated from field observations concerning the state of the utility in question.
What is a CIPP liner?
Considered a trenchless repair, CIPP liners use a polyester flexible sock or sleeve impregnated with resin that is inverted or winched into the pipe. The sock is inverted using either winch inversion, water inversion or air (steam) inversion. Inversion allows the liner to conform to the existing pipe contours providing for minor irregularities or slight changes of pipe direction. The thickness of the pipe can be increased by increasing the thickness of the polyester sock.
How does a pipe bursting mandrel work?
Pipe bursting works by using a pneumatic or hydraulic bursting mandrel to crush the existing pipeline while at the same time a new pipe can be pulled into place. The crushed pipe is forced into surrounding soils, acting as bedding material for the new pipe.
How long does it take for CIPP to cure?
A four to eight foot section of 12'' ambient cure CIPP may cure in as little as two to four hours.
What is internal mechanical seal?
Internal mechanical seals are well suited to applications where vibration or shifting of the pipe can be anticipated. Typically made of impervious, flexible rubber gaskets and stainless steel bands, internal pipe seals are installed at leaking pipe joints or as a preventative measure. In cases of harsh environment, several bands can be linked together to act as sheathing of the pipe. Banding material can be custom manufactured to suit environmental conditions. Odd shaped pipes including egg and square can be accommodated. New, low profile designs reduce historical problems concerning loss of flow area and build-up of debris.
When did GASB 34 go into effect?
Looming on the horizon is Governmental Accounting Standards Board (GASB) Statement 34, going into effect June 15, 2001, which requires all current and long-term assets and liabilities to be reported on the balance sheets of governmental financial statements.
Is rehabilitation a comprehensive listing?
The above discussion of rehabilitation methods is by no means a comprehensive listing. Traditional open-cut, point repairs and a multitude of exotic methods all have their place in the arsenal of collection system managers as they strive to meet the challenges of maintaining today's aging infrastructure.
Can pipes be butt welded?
Pipes are butt-welded on the surface of the ground before being winched or jacked into the existing pipe. Additional pipe lengths are added as needed. For short sections of pipe, the pipes can be joined together by special gasketed joints and jacked into place.
What is pipe fitting?
Pipe Fittings are Piping component that helps in Changes the direction of the flow such as elbows, tees. Changes the size of the pipe such as reducers, reducing tees. Connect different components such as couplings and stop the flows such as Caps. There are different types of pipe fitting used in piping. Pipe Fittings used in piping work are listed ...
What is pipe elbow?
Pipe Elbow. The Elbow is used more than any other pipe fittings. It provides flexibility to change the pipe direction. Elbow mainly available in two standard types 90° and 45°. However, it Can be cut to any other degree. Elbows are available in two radius types, Short radius (1D) and Long Radius (1.5D).
What is a swage reducer?
Swage Reducer. The swage is like reducers but small in size and used to connect pipes to smaller screwed or socket welded pipes. Like reducers, they are also available in concentric & eccentric types. Swages are available in different end types. Such as both plain ends or one plain and one threaded end.
What is a union in piping?
Piping Union. Unions are used as an alternative to flanges connection in low-pressure small bore piping where the dismantling of the pipe is required more often. Unions can be a threaded end or socket weld ends. There are three pieces in a union, a nut, a female end, and a male end.
What is a 90 reducing elbow?
The 90 reducing elbow is designed to change direction as well as reduce the size of the pipe within a piping system. The reducing elbow eliminates one pipe fitting and reduces the welding by more than one-third. Also, the gradual reduction in diameter throughout the arc of the reducing elbow provides lower resistance to flow and reduces the effect of stream turbulence and potential internal erosion. These features prevent sizeable pressure drops in the line.
What is a cross in a sprinkler line?
Cross is also known as four-way pipe fitting. A cross has one inlet and three outlets (or vice versa). Generally, crosses are not used in process piping to transport fluid. But forged crosses are common in the firewater sprinkler line.
What is a pipe tee?
A pipe tee is used for distributing or collecting the fluid from the run pipe. It is a short piece of pipe with a 90-degree branch at the center. There are two types of Tee used in piping, Equal / Straight Tee, and Reducing / Unequal Tee.
What is PE100 pipe?
PE100 is most commonly used for continuous slip lining in circular, non-man entry pipes. The new pipe is laid out above ground and pulled through an excavated pit into the host pipe. The new pipe is then winched through the host pipe to an exit pit or manhole.
What is slip lining?
Slip-lining is perhaps the oldest of all trenchless techniques. It involves the insertion of a new PE100 liner pipe of standard diameter and SDR into an existing pipe. Under the right conditions, slip lining is also the simplest trenchless technique. A new pipe with an outside dimension smaller than the inside dimension of the host pipe is either pulled or pushed into the host pipe. The ideal host pipes for slip lining are straight with no deformities, no or modest bends, no severe protrusions into the pipe, and only modest offset joints. Sliplining requires a minimum radial clearance of about 10mm and such a fit cannot always be obtained because the standard metric pipe sizes for PE100 do not neatly match the internal diameters of old cast iron pipes. As a result, the technique may result in a substantial decrease in capacity although this will be offset to some extent by the lower friction of the PE.. Pipe manufacturers should be contacted to investigate the diameter options currently available, increasingly they are adding sizes to maximise the capacity of insertion pipes. Slip lining may be continuous or segmental.
How much clearance is needed for sliplining?
Sliplining requires a minimum radial clearance of about 10mm and such a fit cannot always be obtained because the standard metric pipe sizes for PE100 do not neatly match the internal diameters of old cast iron pipes.
What happens when you slipline a pipe?
Sliplining results in an annular space within the host pipe so the liner is able to increase in diameter, and therefore decrease in length, when pressurised. This will result in axial tension, and the same will happen if the lining is installed in very high temperatures and pieced up before it has cooled down.
Why grout the annulus between the liner and the host pipe?
This is to stop the possible tracking of leaking gas in the old pipe and the slumping of reinstatements.
What is the structural condition of a host main?
The structural condition of the host main is really of no consequence, except for live insertion projects during the transition period when both the liner and host pipe are carrying gas, as the lining pipe will be independent , and able to perform even if the host pipe disintegrates entirely.
Is grouting necessary for slip lining?
Where grouting is necessary the proper selection and application of grout is often the most difficult part of a slip lining job. Grouts that serve only as a filler to restrain the new pipe are relatively low strength grouts with low viscosity.
Why are push fit fittings so popular?
Push-fit fittings are becoming more and more readily available in home improvement centers and hardware stores, mostly because consumers find them so easy to use. Compared to solvent-gluing CPVC and PVC pipes, or sweat-soldering copper pipes with a torch, push-fit fittings are remarkably easy to use and require no particular skill ...
What is a Neoprene O-ring?
Neoprene O-rings inside the fittings form tight, waterproof seals against the pipes. According to the American Society of Plumbing Engineers, these connections are dependable and secure even when hidden inside finished walls and ceilings. 1. When you are making joints for CPVC, PEX, or copper pipes, push-fit fittings are by far ...
What is gatorbite and sharkbite?
Sharkbite and Gatorbite are two well-known brand names. Regardless of the brand, push-fit fittings all have a similar internal structure that allows them to create a watertight seal when they are pushed onto a pipe. 3:17.
What should the package labels tell you?
The package labels should tell you the accepted usage of the fittings. Follow the manufacturer’s directions and recommendations to ensure that your connections are watertight and safe. There is a tool designed to remove certain types of push-fit fittings.
Can you cap a pipe with a push fit fitting?
In an emergency, you can quickly cap or repair a pipe by simply slipping on a push-fit fitting. Push-fit fittings are a great way to make pipe connections without having to solder or use clamps, unions, or glue. Pipes need not be perfectly dry when using push-fit fittings.
Do you need to dry pipe before soldering?
Pipes need not be perfectly dry when using push-fit fittings. This is in contrast with CPVC and PVC, which must be bone-dry before solvent gluing; or copper pipes, which also must be dry before soldering with a torch. Push-fit fittings are available in various materials for different kinds of applications.
Can you use push fit fittings on a pipe?
Tips for Using Push-Fit Fittings. When using push-fit fittings, make sure there aren’t any burrs on the end of the pipe; this can damage the O-ring and compromise the watertight seal. Ensure that the push-fit fittings you purchase are approved for the intended use.
How long does PEX pipe last?
ASTM International, a standards organization, requires that the life expectancy for PEX pipe be at least 50 years. (Some PEX manufacturers offer a pipe life expectancy of more than 100 years.) In short, PEX is more durable and provides longer system longevity with less time and material invested in the installation.
How to connect PEX pipe to PEX pipe?
The process for making a connection on a square-cut, clean pipe is as follows. Slide a crimp ring over the end of the PEX pipe. Insert a fitting, either metal or plastic, into the end of the pipe. Slide the ring into position over a point where the pipe and the fitting overlap.
How much does PEX expand?
Certain types of PEX can even expand up to three times the pipe’s diameter.
Why switch to PEX?
For one, PEX is flexible, so it can bend with each change in direction. This reduces the number of required connections, making installations faster and easier — and lessens the chance of potential leak points.
How to make a PEX connection on a square cut pipe?
The process for making a connection on a square-cut, clean pipe is as follows. Slide the PEX-reinforcing ring over the end of the pipe. Most rings have a stop on the end of it. If not, leave a small space at the end of the ring before starting the connection.
How big is a crimp ring?
The tools are generally one size fits all, so a 1/2-inch connection and a 1-inch connection can be made with no adjustment to the tool.
Can you inspect a fitting?
There is no way to inspect the fitting visually ; a special go/no-go gauge must be used. The go/no-go gauges also vary by manufacturer. The scariest part about the go/no-go gauge is when there isn’t one. Many installers I’ve talked to don’t even own one.
