Lift shaft - Revision history

Designing Buildings at 12:49, 1 October 2020

2020-10-01T12:49:22Z

← Older revision		Revision as of 12:49, 1 October 2020
Line 69:		Line 69:
	* Lifts Regulations 1997		* Lifts Regulations 1997

−	[[Category:~~Construction_techniques~~]] [[Category:~~Design~~]] [[Category:~~Products_/_components~~]] [[Category:~~DCN_Product_Knowledge~~]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Product_Knowledge]] [[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]

71.41.172.242 at 22:07, 24 December 2019

2019-12-24T22:07:33Z

← Older revision		Revision as of 22:07, 24 December 2019
Line 5:		Line 5:
	= Introduction =		= Introduction =

−	Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. Lift shafts will also extend below ground if it must serve one or more basement levels, or to house operating equipment. They are commonly found in commercial, public and other types of multi-storey building.	+	Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. Lift shafts will also extend below ground if they must serve one or more basement levels, or to house operating equipment. They are commonly found in commercial, public and other types of multi-storey building.

	Lift shafts have several important functions:		Lift shafts have several important functions:
Line 69:		Line 69:
	* Lifts Regulations 1997		* Lifts Regulations 1997

−	[[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]	+	[[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 12:43, 13 February 2019

2019-02-13T12:43:13Z

← Older revision		Revision as of 12:43, 13 February 2019
Line 2:		Line 2:
	\| [[File:Elevator-1121069_640.jpg\|link=File:Elevator-1121069_640.jpg]]		\| [[File:Elevator-1121069_640.jpg\|link=File:Elevator-1121069_640.jpg]]
	\|}		\|}
		+
		+	= Introduction =

	Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. Lift shafts will also extend below ground if it must serve one or more basement levels, or to house operating equipment. They are commonly found in commercial, public and other types of multi-storey building.		Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. Lift shafts will also extend below ground if it must serve one or more basement levels, or to house operating equipment. They are commonly found in commercial, public and other types of multi-storey building.

Designing Buildings at 12:42, 13 February 2019

2019-02-13T12:42:54Z

← Older revision		Revision as of 12:42, 13 February 2019
Line 16:		Line 16:
	= Construction =		= Construction =

−	Generally, on large commercial and public buildings, the reinforced concrete lift shaft will form part of, and be located in the building’s core along with escape stairways, toilets and other ancillary accommodation. More often than not, the construction will be of in-situ-poured, reinforced concrete with openings left at each floor for elevator and other orifices. The core can form part of the building’s structure as it may be connected to the floors and hence provide lateral stability. This is increasingly the favoured construction in many ~~super-~~tall buildings.	+	Generally, on large commercial and public buildings, the reinforced concrete lift shaft will form part of, and be located in the building’s core along with escape stairways, toilets and other ancillary accommodation. More often than not, the construction will be of in-situ-poured, reinforced concrete with openings left at each floor for elevator and other orifices. The core can form part of the building’s structure as it may be connected to the floors and hence provide lateral stability. This is increasingly the favoured construction in many tall buildings.

	The arrangement of lift mechanics in a shaft will be very much dependant on the type of lift mechanism that is installed. A conventional traction lift will usually require a system of steel ropes, pullies and counterweight. A hydraulic lift will require installation of a piston to provide the necessary push and pull, typically located at the bottom of a shaft.		The arrangement of lift mechanics in a shaft will be very much dependant on the type of lift mechanism that is installed. A conventional traction lift will usually require a system of steel ropes, pullies and counterweight. A hydraulic lift will require installation of a piston to provide the necessary push and pull, typically located at the bottom of a shaft.

−	Off-site manufactured lift shaft components are also becoming more popular: precast concrete lift shafts (usually up to six storeys) can be quick to install and the offsite construction minimises on-site disruption. Typically, they ~~may~~ have minimum dimensions of 1500mm x 1500mm, ~~with~~ maximum ~~sizes~~ of 2000mm x 3000mm; standard wall thicknesses can range between 125mm to 140mm. Such shafts are not only pre-assembled, but can ~~come~~ fitted out with all required equipment. On site, they are craned into position, one on top of the other.	+	Off-site manufactured lift shaft components are also becoming more popular: precast concrete lift shafts (usually up to six storeys) can be quick to install and the offsite construction minimises on-site disruption. Typically, they have minimum dimensions of 1500mm x 1500mm, and maximum dimensions of 2000mm x 3000mm; standard wall thicknesses can range between 125mm to 140mm. Such shafts are not only pre-assembled, but can be fitted out with all required equipment. On site, they are craned into position, one on top of the other.

−	Shaft walls may also be constructed of brickwork, blockwork or incombustible fibre-board panels on a steel framework to give the necessary fire resistance.	+	Shaft walls may also be constructed from brickwork, blockwork or incombustible fibre-board panels on a steel framework to give the necessary fire resistance.

	= Fire considerations =		= Fire considerations =
Line 34:		Line 34:
	Ventilation of the shaft may be required to dissipate heat from lift equipment and components. EN81-20 and EN80-50 are the relevant European standards for lifts and cover requirements for lift shaft ventilation. Local codes and regulations should also be consulted.		Ventilation of the shaft may be required to dissipate heat from lift equipment and components. EN81-20 and EN80-50 are the relevant European standards for lifts and cover requirements for lift shaft ventilation. Local codes and regulations should also be consulted.

−	In the UK, general guidelines on the provision of lifts within buildings are outlined in Approved Document M – Access to and Use of Buildings. Section 3 within covers horizontal and vertical circulation in buildings other than dwellings.	+	In the UK, general guidelines on the provision of lifts within buildings are outlined in Approved Document M: Access to and Use of Buildings. Section 3 within covers horizontal and vertical circulation in buildings other than dwellings.
		+
		+	Additional provisions in relation to evacuation and firefighting are set out in Approved Document B: Fire safety.

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

	* A brief history of lifts over the years.		* A brief history of lifts over the years.
		+	* Approved documents.
	* Considerations when installing a residential lift.		* Considerations when installing a residential lift.
	* Counterweights.		* Counterweights.

Designing Buildings at 12:36, 13 February 2019

2019-02-13T12:36:27Z

← Older revision		Revision as of 12:36, 13 February 2019
Line 3:		Line 3:
	\|}		\|}

−	Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. ~~The lift shaft~~ will also extend below ground if it must serve one or more basement levels. ~~It will normally be~~ found in commercial, public ~~buildings~~ and other types of multi-storey building.	+	Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. Lift shafts will also extend below ground if it must serve one or more basement levels, or to house operating equipment. They are commonly found in commercial, public and other types of multi-storey building.

−	Lift shafts have several ~~Important~~ functions:	+	Lift shafts have several important functions:

−	* They provide ~~the~~ lift ~~car~~ with clear, unimpeded travel between floors.	+	* They provide lift cars with clear, unimpeded travel between floors.
−	* ~~The~~ fire-resisting construction is designed to ensure that lift operation is not impaired by a fire breaking out on any of the floors. As such ~~it becomes a~~ protected ~~shaft~~.	+	* Their fire-resisting construction is designed to ensure that lift operation is not impaired by a fire breaking out on any of the floors of a building. As such they become protected shafts. If they were not fire-resisting construction, they could form flue-like apertures that might allow the spread of fire through convection currents and firebrands.
−	* If it were not fire-resisting construction, ~~the lift shaft~~ could form a flue-like ~~aperture~~ that might allow the spread of fire through convection currents and firebrands.	+	* They can provide a zone for locating the lift mechanism, although sometimes lift machinery is located in rooms located outside the shaft.
−	* They provide a zone for locating the lift mechanism, although ~~this may not be true in all cases,~~ sometimes lift machinery is located in rooms located outside the shaft.	+	* Their construction usually affords users of areas immediately around the shaft with a degree of noise separation from the lift operating machinery.
−	* ~~The~~ construction usually affords users of areas immediately around the shaft with a degree of noise separation from the lift operating machinery.	+	* Their outside face may be used on each floor as a wayfinding marker.
−	* ~~The~~ outside face ~~of the shaft~~ may be used on each floor as a wayfinding marker.	+	* They can form part of the structural core that stabilises buildings.

	= Construction =		= Construction =
Line 43:		Line 43:
	* Hoists.		* Hoists.
	* Home lifts.		* Home lifts.
		+	* Lifts.
	* Lift motor room.		* Lift motor room.
	* Lift Standards: EN 81-20 and EN 81-50.		* Lift Standards: EN 81-20 and EN 81-50.

Editor at 17:03, 12 February 2019

2019-02-12T17:03:30Z

← Older revision		Revision as of 17:03, 12 February 2019
Line 16:		Line 16:
	= Construction =		= Construction =

−	Generally, on large commercial and public buildings, the reinforced concrete lift shaft will form part of, and be located in the building’s core along with escape stairways, toilets and other ancillary accommodation. More often than not, the construction will be of in-situ-poured, reinforced concrete with openings left at each floor for elevator and other ~~openings~~. The core can form part of the building’s structure as it may be connected to the floors and hence provide lateral stability. This is increasingly the favoured construction in many super-tall buildings.	+	Generally, on large commercial and public buildings, the reinforced concrete lift shaft will form part of, and be located in the building’s core along with escape stairways, toilets and other ancillary accommodation. More often than not, the construction will be of in-situ-poured, reinforced concrete with openings left at each floor for elevator and other orifices. The core can form part of the building’s structure as it may be connected to the floors and hence provide lateral stability. This is increasingly the favoured construction in many super-tall buildings.

	The arrangement of lift mechanics in a shaft will be very much dependant on the type of lift mechanism that is installed. A conventional traction lift will usually require a system of steel ropes, pullies and counterweight. A hydraulic lift will require installation of a piston to provide the necessary push and pull, typically located at the bottom of a shaft.		The arrangement of lift mechanics in a shaft will be very much dependant on the type of lift mechanism that is installed. A conventional traction lift will usually require a system of steel ropes, pullies and counterweight. A hydraulic lift will require installation of a piston to provide the necessary push and pull, typically located at the bottom of a shaft.

Editor at 17:00, 12 February 2019

2019-02-12T17:00:46Z

← Older revision		Revision as of 17:00, 12 February 2019
Line 1:		Line 1:
	{\|		{\|
−	\| [[File:Elevator-~~1121069 640~~.jpg]]	+	\| [[File:Elevator-1121069_640.jpg\|link=File:Elevator-1121069_640.jpg]]
	\|}		\|}

Line 62:		Line 62:
	* Lifting Operations and Lifting Equipment Regulations (LOLER),		* Lifting Operations and Lifting Equipment Regulations (LOLER),
	* Lifts Regulations 1997		* Lifts Regulations 1997
		+
		+	[[Category:Construction_techniques]] [[Category:Design]] [[Category:Products_/_components]]

Editor at 16:54, 12 February 2019

2019-02-12T16:54:53Z

← Older revision		Revision as of 16:54, 12 February 2019
Line 1:		Line 1:
		+	{\|
		+	\| [[File:Elevator-1121069 640.jpg]]
		+	\|}
		+
	Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. The lift shaft will also extend below ground if it must serve one or more basement levels. It will normally be found in commercial, public buildings and other types of multi-storey building.		Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. The lift shaft will also extend below ground if it must serve one or more basement levels. It will normally be found in commercial, public buildings and other types of multi-storey building.

Editor: Created page with "Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate ab..."

2019-02-12T16:48:13Z

Created page with "Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate ab..."

New page

Lifts (or elevators) in buildings are normally totally enclosed by a shaft (typically square or rectangular) that will rise vertically through the building and often terminate above roof level. The lift shaft will also extend below ground if it must serve one or more basement levels. It will normally be found in commercial, public buildings and other types of multi-storey building.

Lift shafts have several Important functions:

* They provide the lift car with clear, unimpeded travel between floors.
* The fire-resisting construction is designed to ensure that lift operation is not impaired by a fire breaking out on any of the floors. As such it becomes a protected shaft.
* If it were not fire-resisting construction, the lift shaft could form a flue-like aperture that might allow the spread of fire through convection currents and firebrands.
* They provide a zone for locating the lift mechanism, although this may not be true in all cases, sometimes lift machinery is located in rooms located outside the shaft.
* The construction usually affords users of areas immediately around the shaft with a degree of noise separation from the lift operating machinery.
* The outside face of the shaft may be used on each floor as a wayfinding marker.

= Construction =

Generally, on large commercial and public buildings, the reinforced concrete lift shaft will form part of, and be located in the building’s core along with escape stairways, toilets and other ancillary accommodation. More often than not, the construction will be of in-situ-poured, reinforced concrete with openings left at each floor for elevator and other openings. The core can form part of the building’s structure as it may be connected to the floors and hence provide lateral stability. This is increasingly the favoured construction in many super-tall buildings.

The arrangement of lift mechanics in a shaft will be very much dependant on the type of lift mechanism that is installed. A conventional traction lift will usually require a system of steel ropes, pullies and counterweight. A hydraulic lift will require installation of a piston to provide the necessary push and pull, typically located at the bottom of a shaft.

Off-site manufactured lift shaft components are also becoming more popular: precast concrete lift shafts (usually up to six storeys) can be quick to install and the offsite construction minimises on-site disruption. Typically, they may have minimum dimensions of 1500mm x 1500mm, with maximum sizes of 2000mm x 3000mm; standard wall thicknesses can range between 125mm to 140mm. Such shafts are not only pre-assembled, but can come fitted out with all required equipment. On site, they are craned into position, one on top of the other.

Shaft walls may also be constructed of brickwork, blockwork or incombustible fibre-board panels on a steel framework to give the necessary fire resistance.

= Fire considerations =

In the event of a fire, the potential chimney performance of a shaft that is totally enclosed may require a smoke outlet, usually an opening of a specific size with metal louvres to the open air at or near the shaft head.

The lift motor chamber, if present, must be fully enclosed by non-combustible materials and separated from the lift shaft, although there may be openings for wires and cables that are needed for the lift’s operation.

= Ventilation =

Ventilation of the shaft may be required to dissipate heat from lift equipment and components. EN81-20 and EN80-50 are the relevant European standards for lifts and cover requirements for lift shaft ventilation. Local codes and regulations should also be consulted.

In the UK, general guidelines on the provision of lifts within buildings are outlined in Approved Document M – Access to and Use of Buildings. Section 3 within covers horizontal and vertical circulation in buildings other than dwellings.

= Related articles on Designing Buildings Wiki =

* A brief history of lifts over the years.
* Considerations when installing a residential lift.
* Counterweights.
* Hoists.
* Home lifts.
* Lift motor room.
* Lift Standards: EN 81-20 and EN 81-50.
* Lifting Operations and Lifting Equipment Regulations (LOLER).
* Lifts and Their Special Operating Modes.
* Lifts for office buildings.
* Liftway.
* Low pit lifts.
* The hidden mechanics of lift routing.
* The importance of service lifts.
* The science of lifts.
* Through-floor lifts.
* Top factors to consider when planning to install a lift.

= External references =

* CIBSE Lifts Group. Promotes technical standards, training and education for vertical transportation and includes a lifts microsite.
* Dept. for Business, Innovation & Skills – Lift manufacture and installation: responsibilities and regulations,
* Lifting Operations and Lifting Equipment Regulations (LOLER),
* Lifts Regulations 1997