Designing Buildings - User contributions [en]

Fabricated drainage stacks

2018-09-04T15:28:38Z

Polypipe Terrain: Created page with "With more pressure being placed on them, M&E consultants and contracts have to ensure that the systems they specify and install are able to stand up to the long-term tests th..."

With more pressure being placed on them, M&E consultants and contracts have to ensure that the systems they specify and install are able to stand up to the long-term tests they’re faced with. With this in mind, many [https://www.designingbuildings.co.uk/wiki/Consultant_team_for_design_and_construction consultants] and [https://www.designingbuildings.co.uk/wiki/Construction_contractor contractors] are turning to accredited systems to ensure both their longevity and sustainability.

Some manufacturers, such as [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain], offer fabricated drainage stacks boasting BES6001 accreditation. This means that the products are not only traceable through the entire [https://www.designingbuildings.co.uk/wiki/Supply_chains_in_construction supply chain], but they also encourage contractors to think responsibly too. By using systems manufactured off-site which are delivered ready to install, waste and carbon emissions can be kept to a minimum.

Aside from being more [https://www.designingbuildings.co.uk/wiki/Sustainability_in_building_design_and_construction sustainable], fabricated drainage stacks are manufactured in a controlled factory setting, reducing the [https://www.designingbuildings.co.uk/wiki/Health_and_safety_for_building_design_and_construction health and safety] risks associated with drainage systems which are jointed on-site. Additionally, every drainage stack is air tested as standard, instilling confidence in the entire supply chain that the systems will stand the test of time.

[[Category:Articles_needing_more_work]] [[Category:Construction_management]] [[Category:Products_/_components]]

On site storage solutions

2018-08-15T09:01:56Z

Polypipe Terrain:

It is estimated that the Earth’s population will have increased to 9 billion by 2050. Of those 9 billion people, 66% will be living in cities. In already densely-populated cities like London, Manchester and Birmingham - this growth will result in a tight squeeze.

While the increasing popularity of urban living is good news for [https://www.designingbuildings.co.uk/wiki/Architect architects], [https://www.designingbuildings.co.uk/wiki/Developer developers] and [https://www.designingbuildings.co.uk/wiki/Construction_contractor contractors]; it still poses a number of problems. In cities that already have limited space, the only solution is to build upwards.

Whether [https://www.designingbuildings.co.uk/wiki/Definitions_of_retrofitting retrofitting] or delivering a new development, the distinct lack of space can pose a real issue for everyone throughout the [https://www.designingbuildings.co.uk/wiki/Supply_chains_in_construction supply chain]. Not only do contractors and [https://www.designingbuildings.co.uk/wiki/Sub-contractor sub-contractors] have to battle with limited space, but the lack of [https://www.designingbuildings.co.uk/wiki/Site_storage storage] can also mean there’s nowhere to store vital [https://www.designingbuildings.co.uk/wiki/Construction_equipment equipment] and project components.

On-site storage is a vital consideration for any project. Not only for [https://www.designingbuildings.co.uk/wiki/Health_and_safety_for_building_design_and_construction health and safety], but to preserve the materials and tools being used, including [https://www.designingbuildings.co.uk/wiki/Brick bricks], sand, [https://www.designingbuildings.co.uk/wiki/Construction_tools power tools] and machinery. Also, different types of material will have different storage requirements.

For example, [https://www.designingbuildings.co.uk/wiki/Brick bricks] should be stored on level ground with excellent drainage. They should be stacked on edge in rows, up to a maximum height of 2.4 m and covered with a [https://www.designingbuildings.co.uk/wiki/Polyethylene polythene] sheet in order to protect against [https://www.designingbuildings.co.uk/wiki/Efflorescence efflorescence]. Additionally, an area of at least 5 m should be left in order to allow for a [https://www.designingbuildings.co.uk/wiki/Forklift_truck forklift].

If they’re being stored on site, it’s recommended for drainage pipes to be stored in an open compound. They should be stacked horizontally with spigots and sockets reversed in alternate layers until they are required - taking up precious space on site.

However, with a lack of space becoming a common challenge on construction sites - manufacturers, such as [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain], are offering alternative solutions. The [https://www.designingbuildings.co.uk/wiki/Terrain_Fabrication_Service Polypipe Terrain Fabrication Service] aims to reduce the need for on-site storage, frequently delivering products to sites with limited storage.

Able to work with [https://www.designingbuildings.co.uk/wiki/Project_manager project managers] to work out an exact delivery schedule, [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain] can ensure their products don’t reach the site before they’re needed, meaning they won’t take up precious space on site. They can even deliver items in a floor-by-floor sequence as and when they’re required.

--[[User:Polypipe_Terrain|Polypipe Terrain]] 10:01, 15 Aug 2018 (BST)

[[Category:Organisations]] [[Category:Projects_and_case_studies]] [[Category:Sustainability]] [[Category:Construction_management]] [[Category:Construction_techniques]] [[Category:Design]]

On site storage solutions

2018-08-15T09:01:29Z

Polypipe Terrain: Created page with "It is estimated that the Earth’s population will have increased to 9 billion by 2050. Of those 9 billion people, 66% will be living in cities. In already densely-populated citi..."

It is estimated that the Earth’s population will have increased to 9 billion by 2050. Of those 9 billion people, 66% will be living in cities. In already densely-populated cities like London, Manchester and Birmingham - this growth will result in a tight squeeze.

While the increasing popularity of urban living is good news for [https://www.designingbuildings.co.uk/wiki/Architect architects], [https://www.designingbuildings.co.uk/wiki/Developer developers] and [https://www.designingbuildings.co.uk/wiki/Construction_contractor contractors]; it still poses a number of problems. In cities that already have limited space, the only solution is to build upwards.

Whether [https://www.designingbuildings.co.uk/wiki/Definitions_of_retrofitting retrofitting] or delivering a new development, the distinct lack of space can pose a real issue for everyone throughout the [https://www.designingbuildings.co.uk/wiki/Supply_chains_in_construction supply chain]. Not only do contractors and [https://www.designingbuildings.co.uk/wiki/Sub-contractor sub-contractors] have to battle with limited space, but the lack of [https://www.designingbuildings.co.uk/wiki/Site_storage storage] can also mean there’s nowhere to store vital [https://www.designingbuildings.co.uk/wiki/Construction_equipment equipment] and project components.

On-site storage is a vital consideration for any project. Not only for [https://www.designingbuildings.co.uk/wiki/Health_and_safety_for_building_design_and_construction health and safety], but to preserve the materials and tools being used, including [https://www.designingbuildings.co.uk/wiki/Brick bricks], sand, [https://www.designingbuildings.co.uk/wiki/Construction_tools power tools] and machinery. Also, different types of material will have different storage requirements.

For example, [https://www.designingbuildings.co.uk/wiki/Brick bricks] should be stored on level ground with excellent drainage. They should be stacked on edge in rows, up to a maximum height of 2.4 m and covered with a [https://www.designingbuildings.co.uk/wiki/Polyethylene polythene] sheet in order to protect against [https://www.designingbuildings.co.uk/wiki/Efflorescence effloresce][https://www.designingbuildings.co.uk/wiki/Efflorescence nce]. Additionally, an area of at least 5 m should be left in order to allow for a [https://www.designingbuildings.co.uk/wiki/Forklift_truck forklift].

If they’re being stored on site, it’s recommended for drainage pipes to be stored in an open compound. They should be stacked horizontally with spigots and sockets reversed in alternate layers until they are required - taking up precious space on site.

However, with a lack of space becoming a common challenge on construction sites - manufacturers, such as [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain], are offering alternative solutions. The [https://www.designingbuildings.co.uk/wiki/Terrain_Fabrication_Service Polypipe Terrain Fabrication Service] aims to reduce the need for on-site storage, frequently delivering products to sites with limited storage.

Able to work with [https://www.designingbuildings.co.uk/wiki/Project_manager project managers] to work out an exact delivery schedule, [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain] can ensure their products don’t reach the site before they’re needed, meaning they won’t take up precious space on site. They can even deliver items in a floor-by-floor sequence as and when they’re required.

--[[User:Polypipe Terrain|Polypipe Terrain]] 10:01, 15 Aug 2018 (BST)

[[Category:Organisations]] [[Category:Projects_and_case_studies]] [[Category:Sustainability]] [[Category:Construction_management]] [[Category:Construction_techniques]] [[Category:Design]]

On-site Productivity Issues

2018-08-03T15:25:13Z

Polypipe Terrain: Created page with "In recent years, productivity in the UK’s construction sector has plummeted. Although the latest ONS data shows a minor increase in [https://www.designingbuildings.co.uk/wiki/P..."

In recent years, productivity in the UK’s construction sector has plummeted. Although the latest ONS data shows a minor increase in [https://www.designingbuildings.co.uk/wiki/Productivity_in_building_design_and_construction productivity] at the end of 2017, the Government is still desperate for the construction sector to increase its output - claiming that increasing productivity and build numbers could add up to £15 billion to the UK economy each year.

A number of manufacturers that operate in the [https://www.designingbuildings.co.uk/wiki/Supply_chains_in_construction construction supply chain], such as [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain], have been harnessing the benefits of factory manufacturing and offsite construction as a solution to decreasing productivity.

One of the easiest ways to speed up on-site builds is to keep things simple. Using [https://www.designingbuildings.co.uk/wiki/Terrain_Fabrication_Service fabricated drainage stacks] which arrive on site complete and ready to install is one way to speed up proceedings. This helps [https://www.designingbuildings.co.uk/wiki/Construction_contractor contractors] to get things moving more quickly, with an accurate, efficient installation process.

Additionally, the choice of materials can have a huge impact on productivity. When compared to alternative materials, plastic drainage pipes can negate the need for skilled labourers and allow the project to be completed much more quickly. Not only will this allow [https://www.designingbuildings.co.uk/wiki/Construction_contractor contractors] to focus elsewhere, but it will also help [https://www.designingbuildings.co.uk/wiki/Budget_for_building_design_and_construction_projects budgets] work harder.

Find out more about [http://www.polypipe.com/terrain-drainage-stacks fabricated drainage stacks] from [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain].

[[Category:Education]] [[Category:Regulations]] [[Category:Construction_management]]

Secondary Ventilation Stacks in Tall Buildings

2018-07-25T09:26:53Z

Polypipe Terrain:

== Why are secondary drainage stacks required? ==

As increasing numbers of people work and live in city centres, the lack of space available for residential developments means that high-rise buildings are becoming more widespread.

When installing drainage and ventilation pipework in high-rise buildings, traditional design standards dictate that a secondary ventilation stack has to be used to overcome air pressure changes. This is to account for the positive and negative air fluctuations that can compromise water trap seals due to the unsteady flow of water through the pipework. Incorrect air balance can result in blowback and siphoning of the water seal in the trap, which could pose a public health risk.

To maintain stability in a drainage system, it is necessary to alleviate this change in air pressure immediately. This response time is paramount for protecting water trap seals, with traditional secondary pipework systems thought to be the only way to provide this function.

== Considerations for designing drainage and ventilation ==

There are many factors to consider when installing secondary pipework systems, which continue to be the industry norm. For Instance, installing a secondary stack ventilation system requires more installation time and materials, and in turn takes up valuable floor space, a major factor when limited space is taken into consideration. With architects often designing buildings to a small footprint, particularly in city centres with limited space, the inclusion of a secondary stack can hinder the design process.

Rather than a secondary ventilation piping system, air regulatory and attenuator valves can be installed in high-rise buildings drainage stacks to balance negative and positive air pressure fluctuations.

There are potential savings to be made through the removal of secondary vented drainage systems. As less vents are required there is also a reduced requirement for floor penetration fire collars, something a secondary vent system would always require.

The removal of a secondary vent also reduces the drainage system footprint, meaning there is greater flexibility in the design of internal drainage systems. This increased flexibility means that building designs, and room layouts, are no longer dictated by strict pipework systems. This provides architects with more freedom to design buildings, without having to compromise. Building owners also have more useable, and consequently sellable space.

Secondary venting also proves to be a much less effective solution for very tall, or complicated, drainage systems as the time lag that occurs when communicating a change in ambient airflow in the pipework can result in an ill-performing drainage system. This would require expensive maintenance and repair throughout the life of the system.

== Alternatives to secondary ventilation stacks ==

Products such as the [http://www.polypipe.com/commercial-property-public-buildings Polypipe Terrain] [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 P.A.P.A® and Pleura] valves are a proven alternative to traditional secondary vented drainage systems. The P.A.P.A® (positive air pressure attenuation) valve is designed to react to and attenuate positive pressure transience within the drainage stack of high-rise developments providing a suitable venting solution for any multi-storey building.

The Pleura valves are designed to allow air into the system when negative pressures are experienced. When these two valves are combined, the effects of positive pressure such as blown sink and WC traps and negative pressure siphoning traps are mitigated, thus removing the need for a traditional secondary vented pipework system.

The PAPA and Pleura valves have been tested in buildings up to 39 stories high and have BBA and LABC approval, making them a reliable option for designers, architects and installers.

For more information visit [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa®-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 Polypipe.]

--[[User:Polypipe_Terrain|Polypipe Terrain]]

= Find out more =

=== Related articles on Designing Buildings Wiki ===

* Building services.
* Drainage.
* High-rise buildings.
* Pipework.
* Sanitaryware.
* Stack ventilation.
* Water.
* Valves.

[[Category:Education]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Secondary Ventilation Stacks in Tall Buildings

2018-07-23T09:15:31Z

Polypipe Terrain:

As increasing numbers of people work and live in city centres, the lack of space available for residential developments means that high-rise buildings are becoming more widespread.

When installing drainage and ventilation pipework in high-rise buildings, traditional design standards dictate that a secondary ventilation stack has to be used to overcome air pressure changes. This is to account for the positive and negative air fluctuations that can compromise water trap seals due to the unsteady flow of water through the pipework. Incorrect air balance can result in blowback and siphoning of the water seal in the trap, which could pose a public health risk.

To maintain stability in a drainage system, it is necessary to alleviate this change in air pressure immediately. This response time is paramount for protecting water trap seals, with traditional secondary pipework systems thought to be the only way to provide this function.

There are many factors to consider when installing secondary pipework systems, which continue to be the industry norm. For Instance, installing a secondary stack ventilation system requires more installation time and materials, and in turn takes up valuable floor space, a major factor when limited space is taken into consideration. With architects often designing buildings to a small footprint, particularly in city centres with limited space, the inclusion of a secondary stack can hinder the design process.

Rather than a secondary ventilation piping system, air regulatory and attenuator valves can be installed in high-rise buildings drainage stacks to balance negative and positive air pressure fluctuations.

There are potential savings to be made through the removal of secondary vented drainage systems. As less vents are required there is also a reduced requirement for floor penetration fire collars, something a secondary vent system would always require.

The removal of a secondary vent also reduces the drainage system footprint, meaning there is greater flexibility in the design of internal drainage systems. This increased flexibility means that building designs, and room layouts, are no longer dictated by strict pipework systems. This provides architects with more freedom to design buildings, without having to compromise. Building owners also have more useable, and consequently sellable space.

Secondary venting also proves to be a much less effective solution for very tall, or complicated, drainage systems as the time lag that occurs when communicating a change in ambient airflow in the pipework can result in an ill-performing drainage system. This would require expensive maintenance and repair throughout the life of the system.

Products such as the Polypipe Terrain [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 P.A.P.A® and Pleura] valves are a proven alternative to traditional secondary vented drainage systems. The P.A.P.A® (positive air pressure attenuation) valve is designed to react to and attenuate positive pressure transience within the drainage stack of high-rise developments providing a suitable venting solution for any multi-storey building.

The Pleura valves are designed to allow air into the system when negative pressures are experienced. When these two valves are combined, the effects of positive pressure such as blown sink and WC traps and negative pressure siphoning traps are mitigated, thus removing the need for a traditional secondary vented pipework system.

The PAPA and Pleura valves have been tested in buildings up to 39 stories high and have BBA and LABC approval, making them a reliable option for designers, architects and installers.

For more information visit [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa®-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 Polypipe.]

--[[User:Polypipe_Terrain|Polypipe Terrain]]

= Find out more =

=== Related articles on Designing Buildings Wiki ===

* Building services.
* Drainage.
* High-rise buildings.
* Pipework.
* Sanitaryware.
* Stack ventilation.
* Water.
* Valves.

[[Category:Education]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Secondary Ventilation Stacks in Tall Buildings

2018-07-23T09:14:25Z

Polypipe Terrain:

As increasing numbers of people work and live in city centres, the lack of space available for residential developments means that high-rise buildings are becoming more widespread.

When installing drainage and ventilation pipework in high-rise buildings, traditional design standards dictate that a secondary ventilation stack has to be used to overcome air pressure changes. This is to account for the positive and negative air fluctuations that can compromise water trap seals due to the unsteady flow of water through the pipework. Incorrect air balance can result in blowback and siphoning of the water seal in the trap, which could pose a public health risk.

To maintain stability in a drainage system, it is necessary to alleviate this change in air pressure immediately. This response time is paramount for protecting water trap seals, with traditional secondary pipework systems thought to be the only way to provide this function.

There are many factors to consider when installing secondary pipework systems, which continue to be the industry norm. For Instance, installing a secondary stack ventilation system requires more installation time and materials, and in turn takes up valuable floor space, a major factor when limited space is taken into consideration. With architects often designing buildings to a small footprint, particularly in city centres with limited space, the inclusion of a secondary stack can hinder the design process.

Rather than a secondary ventilation piping system, air regulatory and attenuator valves can be installed in high-rise buildings drainage stacks to balance negative and positive air pressure fluctuations.

There are potential savings to be made through the removal of secondary vented drainage systems. As less vents are required there is also a reduced requirement for floor penetration fire collars, something a secondary vent system would always require.

The removal of a secondary vent also reduces the drainage system footprint, meaning there is greater flexibility in the design of internal drainage systems. This increased flexibility means that building designs, and room layouts, are no longer dictated by strict pipework systems. This provides architects with more freedom to design buildings, without having to compromise. Building owners also have more useable, and consequently sellable space.

Secondary venting also proves to be a much less effective solution for very tall, or complicated, drainage systems as the time lag that occurs when communicating a change in ambient airflow in the pipework can result in an ill-performing drainage system. This would require expensive maintenance and repair throughout the life of the system.

Products such as the Polypipe Terrain [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 P.A.P.A® and Pleura] valves are a proven alternative to traditional secondary vented drainage systems. The P.A.P.A® (positive air pressure attenuation) valve is designed to react to and attenuate positive pressure transience within the drainage stack of high-rise developments providing a suitable venting solution for any multi-storey building.

The Pleura valves are designed to allow air into the system when negative pressures are experienced. When these two valves are combined, the effects of positive pressure such as blown sink and WC traps and negative pressure siphoning traps are mitigated, thus removing the need for a traditional secondary vented pipework system.

The PAPA and Pleura valves have been tested in buildings up to 39 stories high and have BBA and LABC approval, making them a reliable option for designers, architects and installers.

For more information visit [[www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa®-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883|Polypipe.]]

--[[User:Polypipe_Terrain|Polypipe Terrain]]

= Find out more =

=== Related articles on Designing Buildings Wiki ===

* Building services.
* Drainage.
* High-rise buildings.
* Pipework.
* Sanitaryware.
* Stack ventilation.
* Water.
* Valves.

[[Category:Education]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Secondary Ventilation Stacks in Tall Buildings

2018-07-23T09:13:38Z

Polypipe Terrain:

As increasing numbers of people work and live in city centres, the lack of space available for residential developments means that high-rise buildings are becoming more widespread.

When installing drainage and ventilation pipework in high-rise buildings, traditional design standards dictate that a secondary ventilation stack has to be used to overcome air pressure changes. This is to account for the positive and negative air fluctuations that can compromise water trap seals due to the unsteady flow of water through the pipework. Incorrect air balance can result in blowback and siphoning of the water seal in the trap, which could pose a public health risk.

To maintain stability in a drainage system, it is necessary to alleviate this change in air pressure immediately. This response time is paramount for protecting water trap seals, with traditional secondary pipework systems thought to be the only way to provide this function.

There are many factors to consider when installing secondary pipework systems, which continue to be the industry norm. For Instance, installing a secondary stack ventilation system requires more installation time and materials, and in turn takes up valuable floor space, a major factor when limited space is taken into consideration. With architects often designing buildings to a small footprint, particularly in city centres with limited space, the inclusion of a secondary stack can hinder the design process.

Rather than a secondary ventilation piping system, air regulatory and attenuator valves can be installed in high-rise buildings drainage stacks to balance negative and positive air pressure fluctuations.

There are potential savings to be made through the removal of secondary vented drainage systems. As less vents are required there is also a reduced requirement for floor penetration fire collars, something a secondary vent system would always require.

The removal of a secondary vent also reduces the drainage system footprint, meaning there is greater flexibility in the design of internal drainage systems. This increased flexibility means that building designs, and room layouts, are no longer dictated by strict pipework systems. This provides architects with more freedom to design buildings, without having to compromise. Building owners also have more useable, and consequently sellable space.

Secondary venting also proves to be a much less effective solution for very tall, or complicated, drainage systems as the time lag that occurs when communicating a change in ambient airflow in the pipework can result in an ill-performing drainage system. This would require expensive maintenance and repair throughout the life of the system.

Products such as the Polypipe Terrain [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 P.A.P.A® and Pleura] valves are a proven alternative to traditional secondary vented drainage systems. The P.A.P.A® (positive air pressure attenuation) valve is designed to react to and attenuate positive pressure transience within the drainage stack of high-rise developments providing a suitable venting solution for any multi-storey building.

The Pleura valves are designed to allow air into the system when negative pressures are experienced. When these two valves are combined, the effects of positive pressure such as blown sink and WC traps and negative pressure siphoning traps are mitigated, thus removing the need for a traditional secondary vented pipework system.

The PAPA and Pleura valves have been tested in buildings up to 39 stories high and have BBA and LABC approval, making them a reliable option for designers, architects and installers.

For more information visit [http://www.constructionenquirer.com/2018/07/23/enquirer-powers-ahead-in-construction-media-rankings/ Polypipe.]

--[[User:Polypipe_Terrain|Polypipe Terrain]]

= Find out more =

=== Related articles on Designing Buildings Wiki ===

* Building services.
* Drainage.
* High-rise buildings.
* Pipework.
* Sanitaryware.
* Stack ventilation.
* Water.
* Valves.

[[Category:Education]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Secondary Ventilation Stacks in Tall Buildings

2018-07-18T11:29:45Z

Polypipe Terrain:

As increasing amounts of people work and live in city centres than ever before, the lack of space available for residential developments means that high rise builds are becoming more widespread.

When installing drainage and ventilation pipework in high rise buildings, traditional design standards dictate that a secondary [https://www.designingbuildings.co.uk/wiki/Mechanical_ventilation_of_buildings ventilation] [https://www.designingbuildings.co.uk/wiki/Mechanical_ventilation_of_buildings stack] has to be used to overcome air pressure changes. This is to account for the positive and negative air fluctuations that can compromise water trap seals due to the unsteady flow of water through the pipe work. Incorrect air balance can result in blowback and siphoning of the water seal in the trap, which could pose a public health risk.

To maintain stability in a drainage system, it is necessary to alleviate this change in air pressure immediately. This response time is paramount for protecting water trap seals, with traditional secondary pipework system thought to be the only way to provide this function.

There are many factors to consider when installing secondary [https://www.designingbuildings.co.uk/wiki/Pipework pipework] systems, which continue to be the industry norm. For Instance, installing a secondary stack ventilation system requires more installation time and materials, and in turn takes up valuable floor space, a major factor when limited space is taken into consideration. With [https://www.designingbuildings.co.uk/wiki/Architect architects] often designing buildings to a small footprint, particularly in city centres with limited space, the inclusion of a secondary stack can hinder, or even stop, the design process.

Rather than a secondary ventilation piping system, air regulatory and attenuator valves can be installed in high rise buildings drainage stacks to balance negative and positive air pressure fluctuations.

There are potential savings to be made through the removal of secondary vented drainage systems. As less vents are required there is also a reduced requirement for floor penetration to install fire collars, something a secondary vent system would always require.

The removal of a secondary vent also reduces the drainage system footprint, meaning there is greater flexibility in the design of internal drainage systems. This increased flexibility means that building designs, and room layout, are no longer dictated by strict pipework systems. This provides architects with more freedom to design buildings, without having to compromise on design. Building owners also have more useable, and consequently sellable space.

Secondary venting also proves to be a much less effective solution for very tall, or complicated, drainage systems as the time lag that occurs when communicating a change in ambient airflow in the pipework can result in an ill performing drainage system. This would require expensive maintenance and repair throughout the lifetime of the drainage system.

Products such as the Polypipe Terrain [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 P.A.P.A® and Pleura] [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 valves] are a proven alternative to replacing traditional secondary vented drainage systems. Polypipe Terrain are experts in providing intelligently engineered solutions for the movement of water and air around tall buildings.

The P.A.P.A® (positive air pressure attenuation) valve is designed to react to and attenuate positive pressure transience within the drainage stack of high rise developments providing a perfect venting solution for any [https://www.designingbuildings.co.uk/wiki/Multi-storey_building multi-storey building].

The Pleura valves are designed to allow air into the system when negative pressures are experienced. When these two valves are combined, the effects of positive pressure such as blown sink and WC traps and negative pressure siphoning traps are mitigated, thus removing the need for a traditional secondary vented pipework system.

The PAPA and Pleura valves have been tested in buildings up to 39 stories high and have BBA and LABC approval, making them the best option for designers, [https://www.designingbuildings.co.uk/wiki/Architect architects] and installers.

For more information visit [[www.polypipe.com/commercial-property-public-buildings|Polypipe]].

[[Category:Education]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Secondary Ventilation Stacks in Tall Buildings

2018-07-18T11:18:53Z

Polypipe Terrain: Created page with "As increasing amounts of people work and live in city centres than ever before, the lack of space available for residential developments means that high rise builds are becoming ..."

As increasing amounts of people work and live in city centres than ever before, the lack of space available for residential developments means that high rise builds are becoming more widespread.

When installing drainage and ventilation pipework in high rise buildings, traditional design standards dictate that a secondary [https://www.designingbuildings.co.uk/wiki/Mechanical_ventilation_of_buildings ventilation] [https://www.designingbuildings.co.uk/wiki/Mechanical_ventilation_of_buildings stack] has to be used to overcome air pressure changes. This is to account for the positive and negative air fluctuations that can compromise water trap seals due to the unsteady flow of water through the pipe work. Incorrect air balance can result in blowback and siphoning of the water seal in the trap, which could pose a public health risk.

To maintain stability in a drainage system, it is necessary to alleviate this change in air pressure immediately. This response time is paramount for protecting water trap seals, with traditional secondary pipework system thought to be the only way to provide this function.

There are many factors to consider when installing secondary [https://www.designingbuildings.co.uk/wiki/Pipework pipework] systems, which continue to be the industry norm. For Instance, installing a secondary stack ventilation system requires more installation time and materials, and in turn takes up valuable floor space, a major factor when limited space is taken into consideration. With [https://www.designingbuildings.co.uk/wiki/Architect architects] often designing buildings to a small footprint, particularly in city centres with limited space, the inclusion of a secondary stack can hinder, or even stop, the design process.

Rather than a secondary ventilation piping system, air regulatory and attenuator valves can be installed in high rise buildings drainage stacks to balance negative and positive air pressure fluctuations.

There are potential savings to be made through the removal of secondary vented drainage systems. As less vents are required there is also a reduced requirement for floor penetration to install fire collars, something a secondary vent system would always require.

The removal of a secondary vent also reduces the drainage system footprint, meaning there is greater flexibility in the design of internal drainage systems. This increased flexibility means that building designs, and room layout, are no longer dictated by strict pipework systems. This provides architects with more freedom to design buildings, without having to compromise on design. Building owners also have more useable, and consequently sellable space.

Secondary venting also proves to be a much less effective solution for very tall, or complicated, drainage systems as the time lag that occurs when communicating a change in ambient airflow in the pipework can result in an ill performing drainage system. This would require expensive maintenance and repair throughout the lifetime of the drainage system.

Products such as the Polypipe Terrain [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 P.A.P.A® and Pleura] [http://www.polypipe.com/commercial-property-public-buildings/terrain-drainage/terrain-papa%C2%AE-positive-air-pressure-attenuator-pleura-vent-system?s=882&c=883 valves] are a proven alternative to replacing traditional secondary vented drainage systems. Polypipe Terrain are experts in providing intelligently engineered solutions for the movement of water and air around tall buildings.

The P.A.P.A® (positive air pressure attenuation) valve is designed to react to and attenuate positive pressure transience within the drainage stack of high rise developments providing a perfect venting solution for any [https://www.designingbuildings.co.uk/wiki/Multi-storey_building multi-storey building].

The Pleura valves are designed to allow air into the system when negative pressures are experienced. When these two valves are combined, the effects of positive pressure such as blown sink and WC traps and negative pressure siphoning traps are mitigated, thus removing the need for a traditional secondary vented pipework system.

The PAPA and Pleura valves have been tested in buildings up to 39 stories high and have BBA and LABC approval, making them the best option for designers, [https://www.designingbuildings.co.uk/wiki/Architect architects] and installers.

For more information visit www.polypipe.com/commercial-property-public-buildings.

[[Category:Education]] [[Category:Construction_techniques]] [[Category:Products_/_components]] [[Category:Property_development]]

Terrain Fabrication Service

2018-01-22T14:43:37Z

Polypipe Terrain: Created page with "Saving you time and money, with the Terrain Fabrication Service, we have the expertise and resources required to help you achieve the demands of your next project. By designing c..."

Saving you time and money, with the Terrain Fabrication Service, we have the expertise and resources required to help you achieve the demands of your next project. By designing completely bespoke drainage stacks and fittings, we can offer you a high quality and customised solution.

Design

Our Technical Team will design stacks and fittings that are bespoke to your project, whether it’s a whole drainage solution or unique ‘one-off’ problem solving application. All within the existing BS EN 12056 (Parts 2 and 3) and Building Regulations Part H standards/regulations.

Fabrication

Your stacks and fittings are manufactured in our state-of-the-art facility to the exact measurements by our highly skilled and experienced Fabrication Team. And for complete peace of mind, pressure testing of stacks is available on request

Installation

We dispatch the finished stacks to your site on time and ready to install. Each stack is labelled with a unique reference number so it can be slotted into the appropriate space quickly and easily – ensuring your project is completed on budget and on time.

Find out more here- [http://www.polypipe.com/thefabricationservice http://www.polypipe.com/thefabricationservice]

User:Polypipe Terrain

2018-01-22T14:34:24Z

Polypipe Terrain:

We continue to work closely with consultants and contractors in order to create our comprehensive range of plumbing and drainage systems, so we could provide solutions for applications ranging from high-rise developments, hospitals and schools to hotels and shopping centres. Terrain pioneered the production of plastic drainage systems in the UK more than 50 years ago and we remain the number one choice for engineered, robust drainage solutions for Commercial and Public Buildings.