What Is Plumbing | Systems of Plumbing | Difference Between One pipe, Two Pipe, Single Stack, and Single Stack Partially Ventilated | How to Choose of Plumbing System.

Difference Between One pipe, Two Pipe, Single Stack, and Single Stack

Important Point

What Is Plumbing?

It is a system of pipes and fixtures installed in a building for the distribution and use of drinkable (potable) water and the removal of waterborne wastes.

It is usually distinguished from water and sewage systems that serve a group of buildings or a city.

Difference Between One pipe, Two Pipe, Single Stack, and Single Stack Partilly Ventilated.

Sr.No.Two Pipe SystemOne Pipe SystemSingle Stack SystemSingle Stack Partially Ventilated System.
14 pipes our sullage pipe one soil pipe two separates vent pipe or anti syphonage pipe One main vertical pipe set ventilated + a separate vent pipe {2 pipe)Only one pipe i.e. waste pipe without any separate ventilation. Two pipe in a single pipe system w.c. is ventilated thrush separate vent pipe.
2Best and most improved system (excellent)Very GoodLess GoodGood
3Large no. of pipes i.e., costlyMore costly than partially single stackCost reduced Branch connection reduced cost less compared to single pipe system
4Large building multistoried building Medium size building Small size building Medium size building
5Less use of trap, favoured.Require safeguard to make drainage effective adequate water seal. Same as one pipe system.
Same as one pipe system.

Also, read: What Is Unit Weight | What Is Density | What Is Unit Weight Material | Unit Weight Building Materials

Systems of Plumbing.

Systems of Plumbing.

The principal parts of the drainage system which can be called its elements are the traps, the vents, the drainage pipe, and the building drain and sewer the rain-water gutters and leaders, etc.

A soil pipe in a plumbing system acts as a drainage pipe that carried or is designed to carry human excrement.

If a pipe is vertical it is called a stack and if it is horizontal it is called a branch. A waste pipe carried liquid wastes that do not include human excrement.

Vent pipes, with few exceptions, are attached to the drainage piped near the traps, and between the trap and the sewer for purpose of admitting air or taking air away from the drainage pipes.

The vent pipes should lead to the outside air at some distance from any other opening into the building. Ventilating and drainage pipes at distance from any other opening into the building.

Ventilating and drainage pipes at a point near the trap assist in prevailing the trap seal from being broken by air pressure in the drainage pipes preventing the trap seal from being broken by air pressure in the drainage pipes.

The following are the main systems of plumbing for the building drainage.

  • Two Pipe System.
  • One Pipe System.
  • Single Stack System.
  • Single Stack Partilly Ventilated System.

Also, read: Definition Related for Plastering Work | Tools For Plastering | Preparation of Background for Plastering

1. Two Pipe System.

Two Pipe System.

This is the most common system used in India. This method provided an ideal solution, where it is not possible to fix the fixtures closely.

One pipe collects the foul soil and water closet wastes, and the second pipe collects the water from the kitchen, bathrooms, house washings, etc.

The soil pipes are directly connected to the manhole/drain, where is the waste pipes arc connected through a fully ventilated gully trap.

  1. The gully trap receives the bath, basin, and sink wastes. It provides aerial disconnection of these wastes from the drain air.
  2. The man soil vent pipe rises to above the level of the eves and is so placed so that gases leaving it cannot be a nuisance or a danger to health.
  3. A vent cowl of cast iron or other material unaffected by corrosion at the top of the vent pipe to prevent nesting birds.
  4. A cast-iron duck foot bend is preferably used at the bottom.

Also, read: Types of Plaster Finishes (List of Plaster Finishing)

2. One Pipe System.

One Pipe System.

In this system only one main pipe is used which collects both the foul soil waste as well as waste from the building. The main pipe is directly connected to the manhole/drain.

The provision of waste pipes and gully traps are completely eliminated. All the traps of the water closets, basins, sinks, etc are fully ventilated and connected to the ventilation pipes.

3. Single Stack System.

Single Stack System.

This is similar to one pipe system but without the provision of ventilation.

The single-stack system is a one-pipe system from which, subject to the observance of certain rules, all or most of the trap ventilating pipes are omitted.

Also, read: Requirements of Good DPC | Prevention of Dampness: Use of DPC | Methods of Damp proofing

4. Single Stack Partilly Ventilated System.

Single Stack Partilly Ventilated System.

This system is a combination of one pipe and a single stack system. It provided only one pipe to collect all types of wastewater foul as well as not so foul.

A relief vent pipe is provided for ventilation only the water closet traps.

Also, read: What Is Dampness | Requirements of an Ideal Material for Damp-Proofing | Materials Used for Damp-Proofing

 

How to Choose of Plumbing System?

For the disposal of sanitary wastes from a building, a two-pipe system of plumbing is considered to be the safest as compared to other systems of plumbing but this is the costlier system.

Where one pipe system or partially ventilated one pipe system is to be used it may require specific prior permission of the administrative authority.

Conventional (two pipes) fully ventilated drainage system for multi-storeyed buildings has been criticized time and again, with its requirement of four main stacks one for soil, one for waste, and two others for ventilation.

Attempts have been made to improve upon the system. thereby achieving the economy without loss of efficacy.

Full ventilated one pipe system, in which all the sanitary appliances are connected to the same stack leading directly to the inspection chamber and all traps are ventilated through a common vent pipe to preserve water seal has come into favor because it has economic and also hygienic advantages over the conventional arrangements.

However, saving is not that pronounced as is expected to be, since a complete ventilation system is still required.

Single stack system (SS) basically a one-pipe system minus ventilation pipework, has gained enormous popularity in recent times and saves so much of material and about its utility is already well established.

Also, read: Why Hairline Cracks in Concrete | Type of Cracks in Concrete 

Central building research institute, Roorkee conducted the experiments on single-stack system of plumbing and concluded the following results

  1. The single stack system offers a compact layout. It avoids gully traps and is thus free from insect nuisance and obstruction etc.
  2. It saves 60% and 4% in a material and overall cost of piping, labour respectively, as compared to the conventional two-pipe system in a four-storeyed building.
  3. There is no necessity of any special water seal traps in the appliances other than WC when they are connected through floor traps through the stack.
  4. The depth of water seal in the floor traps needs noti be deeper than conventional traps for a single stack system up to four stories.
  5. The stack and W.C. branches should be 100 mm dia. other waste branches from floor traps should be 75 mm dia. The slope of the branches shall not be flatter than 1:50.

The CBRI (Central Building Research Institute) Rookie, has recommended the use of one pipe system in the modern multi-storeyed building due to its low cost.

The single stack system may be used up to 5 story building efficiently as recommended by CBRI, Rookie.


Short Note

What Is Plumbing?

Plumbing is any system that conveys fluids for a wide range of applications. Plumbing uses pipes, valves, plumbing fixtures, tanks, and other apparatuses to convey fluids.

Systems of Plumbing

There are three different types of plumbing systems; sanitary drainage, stormwater drainage and potable water. Each of these systems have their own unique functions and purposes.

Pipe System

A piping system is a network of pipes, fittings and valves intended to perform a specific job i.e. to carry or transfer fluids from one equipment to another. The plumbing network supplying water at your home is a common example of a piping system.

What Is Plumbing System?

Plumbingsystem of pipes and fixtures installed in a building for the distribution and use of potable (drinkable) water and the removal of waterborne wastes. It is usually distinguished from water and sewage systems that serve a group of buildings or a city.

What Is Two Pipe System?

An above-ground drainage system that comprises two discharge pipes; one that discharges the soil, and another that discharges the waste.

Types of Plumbing Systems

The Different Types of Plumbing. There are three different types of plumbing systems; sanitary drainage, stormwater drainage and potable water. Each of these systems have their own unique functions and purposes. Here is a more in-depth look into how these systems operate.

What Is a One Pipe System?

One-pipe systems are the simplest and easiest hydronic systems to understand and install. As the name implies, one-pipe systems have a single pipe to the radiators, which serves as both a steam supply and a condensate return line. Each radiator is equipped with an air vent to allow release of this air.

Plumbing System Definition

The plumbing system of a building includes the water supply distributing pipes; the fixture and fixture traps; the soil, waste and vent pipes; the building drain and building sewer; the storm water drainage, with their devices, appurtenances and connections.

What Is Pipe in Pipe System?

A pipe-in-pipe system is essentially made up of an insulated inner pipe and a protective outer pipe. The function of the inner pipe is to convey fluids; therefore, it is designed for internal-pressure containment. The air gap between the inner and outer pipes provides the means of achieving high thermal insulation.

Plumbing System in Building

The plumbing in any building serves two main purposes. The first is to bring water into the structure for human use, and the second is to remove wastewater of various types. There are three main types of plumbing systems: potable water, sanitary drainage and stormwater drainage.

Drainage System in Building

Drainage systems include all of the piping within a private or public property that conveys sewage, rainwater, and other liquid waste to a point of disposal. The main objective of a drainage system is to collect and remove waste matter systematically to maintain healthy conditions in a building.

Which Pipe System Is Costly?

Soil pipes and waste pipes are provided with separate vent pipes. This system thus requires four pipes and hence proves very costly. The soil pipe is connected to the drain directly but the waste pipe should be connected through a trapped gully.

What Are Plumbing Systems?

The primary purposes of a plumbing system are. To bring an adequate and potable supply of hot and cold water to the inhabitants of a house, and. To drain all wastewater and sewage discharge from fixtures into the public sewer or a private disposal system.

One Pipe and Two Pipe System

One pipe collects the foul soil and water closet wastes, and the second pipe collects the water from the kitchen, bathrooms, house washings, etc. The soil pipes are directly connected to the manhole/drain, where is the waste pipes arc connected through a fully ventilated gully trap.

Single Stack System of Plumbing

The single stack, also commonly known as a wet vent system, is based on the theory that the drain lines will be of sufficient size to accommodate the three factors involved in any drainage system: solids, liquids and air. The single stack system used in Philadelphia was developed based on this theory.

What Are Piping Systems Used For?

Piping systems are used to transport all known liquid or gaseous fluids, for pasty materials or pulp and for fluids in suspension, covering the whole range of pressure and temperature used in industrial applications.

How Does a One Pipe System Work?

A one pipe system sends the pumped water to each radiator in turn, and returns the water from the last radiator on the run. This inevitably lead to a very unbalanced system, where the radiators nearest the boiler would be extremely hot and the final radiators on the system tepid at best.

What Are the Types of Piping System?

All process plants have of two types of principal piping systems: process (primary and secondary) piping systems and utility piping systems. Process piping systems are the arteries of a process plant.

What Are Types of Plumbing Systems?

There are three different types of plumbing systems; sanitary drainage, stormwater drainage and potable water. Each of these systems have their own unique functions and purposes. Here is a more in-depth look into how these systems operate.

What Is One Pipe System in Plumbing?

In this system of plumbing the waste connections from sinks, baths, washbasins, and the soil pipe which is connected directly to the drainage system. Gully traps and waste pipes are completely dispensed with. Vent pipe diameter should not be less than 50 mm.

What Is the Important Role of Plumbing?

Plumbers and the plumbing industry help us optimize our water usage through technology and water management. They work to ensure there’s always enough water to go around. They also play an important role in taking actions such as harvesting rainwater, desalination, wastewater treatment, and water reuse.

What Is One Pipe and Two Pipe System?

One pipe collects the foul soil and water closet wastes, and the second pipe collects the water from the kitchen, bathrooms, house washings, etc. The soil pipes are directly connected to the manhole/drain, where is the waste pipes arc connected through a fully ventilated gully trap.

How Many Plumbing Systems Are There?

There are three discrete plumbing systems in most municipalities: potable water, sanitary drainage, and storm drainage

What Is the Best Pipe for Main Water Line?

Schedule 40 PVC or copper is the best way to go with water mains.

What Are the Types of Drainage Systems?

  1. Surface Drainage System
  2. Subsurface Drainage System
  3. Slope Drainage System
  4. Downspouts and Gutter Systems

What Is the Process of Drainage System?

Drainage is the method of removing surface or sub-surface water from a given area. Drainage systems include all of the piping within a private or public property that conveys sewage, rainwater, and other liquid waste to a point of disposal.

What Is the Safest Pipe for Drinking Water?

Copper pipes with lead-free joint materials are the best choice for water pipes. They are long-lasting and won’t leach chemicals into your drinking water. However, copper pipes are generally more expensive, and copper’s intensive extraction and manufacturing process presents some environmental trade-offs.

What Are the Different System of Plumbing?

There are three main types of plumbing systems: potable water, sanitary drainage and stormwater drainage. A good commercial plumber in Las Vegas knows how to do plumbing work within these three systems according to local building codes.

What Is the Advantage of a Two Pipe System?

  • Ensure Segregation of Foul Sewage from Waste Water.
  • No Danager of Backflow of Sewage in Waste Fittings Incaseof Blockage of Soil Pipe.
  • Enables Use of Waste Water Directly for Irrigation/gardening.

What Are the Two Types of Drainage Systems?

There are two main types of drainage system options: surface drains and french drains.

What Are the Benefits of the One Pipe System?

  • The system is intermediate arrangement between the one pipe system and single stack system.
  • In this system there is one soil pipe and all the waster matter from water closets, bath, sink etc. is discharge in this pipe.

What Is Plumbing System in Building Services?

The plumbing in any building serves two main purposes. The first is to bring water into the structure for human use, and the second is to remove wastewater of various types. There are three main types of plumbing systems: potable water, sanitary drainage and stormwater drainage.

What Are the Different Types of Plumbing Systems?

There are three main types of plumbing systems: potable water, sanitary drainage and stormwater drainage. A good commercial plumber in Las Vegas knows how to do plumbing work within these three systems according to local building codes.

What Are the Four Main Types of Plumbing Systems?

  • Single stack system.
  • Partially vented single stack system.
  • One-pipe system.
  • Two-pipe system.

How Does the Drainage System Works in the House?

Your home’s drainage system uses gravity to pull water through the house and outside to drain. Waste and dirty water is piped through a “Soil Stack” which in turn takes the waste through a main drain, generally located underneath the house.

What Is the Objectives of Plumbing System in Buildings?

Plumbing, system of pipes and fixtures installed in a building for the distribution and use of potable (drinkable) water and the removal of waterborne wastes.

What Is the Advantage to a Two Pipe System Direct Return?

The advantage of the direct return system is that pipe routing is more straightforward compared to the reverse return system.

What Is Difference Between One Pipe and Two Pipe System?

One pipe: If you see only one pipe coming from your radiator, that means you have a one-pipe system, and it is definitely steam. Two pipe:In a two-pipe steam system, the steam comes into the radiator from one pipe, and the condensing process occurs in the other pipe, returning water to the boiler.

Does a Two Pipe System Have Any Advantage Over a One Pipe System?

The advantage of the two pipe system is that the water in the primary ‘flow’ pipe is only used in one radiator before being returned to the primary return pipe for reheating. This means it is now possible to achieve equal temperature in all radiators unlike the older single pipe system.

What Is the Difference Between One Pipe and Two Pipe Heating System?

One pipe: If you see only one pipe coming from your radiator, that means you have a one-pipe system, and it is definitely steam. In a two-pipe steam system, the steam comes into the radiator from one pipe, and the condensing process occurs in the other pipe, returning water to the boiler.

What Are the Similarities and Differences Between a One Pipe and Two Pipe System?

One Pipe System Two Pipe System
It requires less number of pipes and hence cheap. It also requires small spaces. It requires a large number of pipes and hence costly. It also requires large spaces.

4 thoughts on “What Is Plumbing | Systems of Plumbing | Difference Between One pipe, Two Pipe, Single Stack, and Single Stack Partially Ventilated | How to Choose of Plumbing System.”

  1. As a Plumber, I would say the above is a very good overall view of what plumbing is about. The average person should find this an interesting read.

    Reply

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