Structural opening - Revision history

Designing Buildings at 06:16, 12 September 2022

2022-09-12T06:16:02Z

← Older revision		Revision as of 06:16, 12 September 2022
Line 1:		Line 1:
	= Use of the term =		= Use of the term =

−	The term structural opening (SO), sometimes also called rough opening~~. It~~ refers to the size of an opening in a wall or facade where a window or door or other unit will be installed. It is normally slightly larger than the actual unit size to allow for tolerances in construction. ~~The structural~~ openings are called as such because their edges ~~are most likely~~ meet with structural elements of the building such as columns, ~~bricks or blockwork~~.	+	The term structural opening (SO), sometimes also called rough opening, refers to the size of an opening in a wall or facade where a window or door or other unit will be installed. It is normally slightly larger than the actual unit size to allow for tolerances in construction. Structural openings are called this such because their edges generally meet with structural elements of the building such as columns, walls, beams, lintels and so on.

	= Finished opening =		= Finished opening =

−	The term finished opening (FO ~~may also sometimes be used, this~~ is similar to a structural opening in that it is the opening that will house a unit such as a window in a facade or wall. Although in this case the opening may have been prepared in some way rather than being a raw structural opening, for instance with fixing of plywood boxing, plaster or render between the structural element and the location of the window or other unit.	+	The term finished opening (FO) is similar to structural opening in that it is the opening that will house a unit such as a window in a facade or wall. Although in this case the opening may have been prepared in some way rather than being a raw structural opening, for instance with fixing of plywood boxing, plaster or render between the structural element and the location of the window or other unit.

	= Tolerances =		= Tolerances =

−	~~By example the~~ width of a structural opening to the edge of brick and blockwork might be 910mm, the finished opening may have a lining of 10mm creating a finished opening that is 900mm wide, whilst the unit size that is intended to be installed is 890mm wide, leaving <5mm tolerance on all sides.	+	The width of a structural opening to the edge of brick and blockwork might be 910mm, the finished opening may have a lining of 10mm creating a finished opening that is 900mm wide, whilst the unit size that is intended to be installed is 890mm wide, leaving <5mm tolerance on all sides.

	NHBC guidance 9.1.4 Doors and windows discusses appropriate tolerances of <3mm on one side to the other of an opening: "Doors and windows shall be installed to appropriate tolerances, including openings in walls and external openings viewed from the inside."		NHBC guidance 9.1.4 Doors and windows discusses appropriate tolerances of <3mm on one side to the other of an opening: "Doors and windows shall be installed to appropriate tolerances, including openings in walls and external openings viewed from the inside."
Line 15:		Line 15:
	= Thermal performance =		= Thermal performance =

−	It should be noted that ~~how~~ a window or any unit installed into a ~~structural~~ can have an impact on fabric performance, as the opening punctuates the building fabric from inside to outside. A Psi ( or ψ value) ~~is a Greek letter that~~ denotes heat loss over a given length rather than a given area. The thermal performance of a window should be calculated including an adjustment for the interface between the window unit and the structural or finished opening, this installation adjustment is often known as the window or installation Psi (ψw). It is an adjustment to the thermal performance of a window allowing for heat loss along the linear junction between the installed window and the edge of the opening.	+	It should be noted that a window or any unit installed into a structure can have an impact on fabric performance, as the opening punctuates the building fabric from inside to outside. Psi ( or ψ value) denotes heat loss over a given length rather than a given area. The thermal performance of a window should be calculated including an adjustment for the interface between the window unit and the structural or finished opening, this installation adjustment is often known as the window or installation Psi (ψw). It is an adjustment to the thermal performance of a window allowing for heat loss along the linear junction between the installed window and the edge of the opening.

−	~~= External Links =~~

−	[https://nhbc-standards.co.uk/9-finishes/9-1-a-consistent-approach-to-finishes/9-1-4-doors-and-windows/ https://nhbc-standards.co.uk/9-finishes/9-1-a-consistent-approach-to-finishes/9-1-4-doors-and-windows/]
−
−	~~[https://www.greenbuildingstore.co.uk/understanding-windows-u-values-psi-values-g-values/ https://www.greenbuildingstore.co.uk/understanding-windows-u-values-psi-values-g-values/]~~

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

−	* Building.
−	* Bespoke window.
−	* Bay window.
−	* Bullseye window.
−	* Clerestory.
−	* Crittall metal windows.
−	* Concept structural design of buildings.
−	* Domestic windows.
−	* Double glazing.
−	* Double glazing v triple glazing.
−	* Easily accessible window.
	* Elements of structure in buildings		* Elements of structure in buildings
−	* Frame factor.
−	* Fenestration.
−	* Furnishings.
−	* Glass manifestation.
−	* Glass.
−	* Glazing.
−	* Historic steel-framed windows.
−	* Jamb.
−	* Laced window.
−	* Light well.
−	* Louvre (or louver).
−	* Plate glass.
	* Principles of enclosure.		* Principles of enclosure.
	* Structure.		* Structure.
	* Structural systems.		* Structural systems.
−	* Structural systems for offices.
	* Superstructure.		* Superstructure.
−	* Sash windows.
−	* Security glazing.
−	* Stained glass.
	* Types of structure.		* Types of structure.
−	* Triple glazing.
−	* Types of blinds.
	* Types of door.		* Types of door.
−	* Window and door schedules.
−	* Window Energy Rating.
−	* Window frame.
−	* Window parts.
	* Windows.		* Windows.
		+
		+	= External references =
		+
		+	* [https://nhbc-standards.co.uk/9-finishes/9-1-a-consistent-approach-to-finishes/9-1-4-doors-and-windows/ https://nhbc-standards.co.uk/9-finishes/9-1-a-consistent-approach-to-finishes/9-1-4-doors-and-windows/]
		+	* [https://www.greenbuildingstore.co.uk/understanding-windows-u-values-psi-values-g-values/ https://www.greenbuildingstore.co.uk/understanding-windows-u-values-psi-values-g-values/]

	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Construction_techniques]] [[Category:Products_/_components]]		[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Construction_techniques]] [[Category:Products_/_components]]

Editor at 07:51, 13 July 2022

2022-07-13T07:51:02Z

← Older revision		Revision as of 07:51, 13 July 2022
Line 1:		Line 1:
	= Use of the term =		= Use of the term =

−	The term structural opening (sometimes called rough opening) refers to the size of an opening in a wall or facade where a window or door or other unit will be installed. It is normally slightly larger than the actual unit size to allow for tolerances in construction. The structural openings are called as such because their edges are most likely meet with structural elements of the ~~buildings~~ such as columns, bricks or blockwork.	+	The term structural opening (SO), sometimes also called rough opening. It refers to the size of an opening in a wall or facade where a window or door or other unit will be installed. It is normally slightly larger than the actual unit size to allow for tolerances in construction. The structural openings are called as such because their edges are most likely meet with structural elements of the building such as columns, bricks or blockwork.

	= Finished opening =		= Finished opening =

−	The term finished opening may also sometimes be used, ~~which~~ is similar in that is the opening to house ~~the~~ unit in a facade or wall ~~though~~ the opening may have been prepared in some way, for instance with plywood boxing, plaster or render between the structural element and the location of the window or other unit.	+	The term finished opening (FO may also sometimes be used, this is similar to a structural opening in that it is the opening that will house a unit such as a window in a facade or wall. Although in this case the opening may have been prepared in some way rather than being a raw structural opening, for instance with fixing of plywood boxing, plaster or render between the structural element and the location of the window or other unit.

	= Tolerances =		= Tolerances =

−	~~For~~ example the width of a structural opening to the edge of brick and blockwork might be 910mm, the finished opening may have a lining of 10mm creating a finished opening that is 900mm wide, whilst the unit size that is intended to be installed is 890mm wide.	+	By example the width of a structural opening to the edge of brick and blockwork might be 910mm, the finished opening may have a lining of 10mm creating a finished opening that is 900mm wide, whilst the unit size that is intended to be installed is 890mm wide, leaving <5mm tolerance on all sides.

−	NHBC guidance 9.1.4 Doors and windows discusses appropriate tolerances: "Doors and windows shall be installed to appropriate tolerances, including openings in walls and external openings viewed from the inside."	+	NHBC guidance 9.1.4 Doors and windows discusses appropriate tolerances of <3mm on one side to the other of an opening: "Doors and windows shall be installed to appropriate tolerances, including openings in walls and external openings viewed from the inside."

	= Thermal performance =		= Thermal performance =

	It should be noted that how a window or any unit installed into a structural can have an impact on fabric performance, as the opening punctuates the building fabric from inside to outside. A Psi ( or ψ value) is a Greek letter that denotes heat loss over a given length rather than a given area. The thermal performance of a window should be calculated including an adjustment for the interface between the window unit and the structural or finished opening, this installation adjustment is often known as the window or installation Psi (ψw). It is an adjustment to the thermal performance of a window allowing for heat loss along the linear junction between the installed window and the edge of the opening.		It should be noted that how a window or any unit installed into a structural can have an impact on fabric performance, as the opening punctuates the building fabric from inside to outside. A Psi ( or ψ value) is a Greek letter that denotes heat loss over a given length rather than a given area. The thermal performance of a window should be calculated including an adjustment for the interface between the window unit and the structural or finished opening, this installation adjustment is often known as the window or installation Psi (ψw). It is an adjustment to the thermal performance of a window allowing for heat loss along the linear junction between the installed window and the edge of the opening.
		+
		+	= External Links =
		+
		+	[https://nhbc-standards.co.uk/9-finishes/9-1-a-consistent-approach-to-finishes/9-1-4-doors-and-windows/ https://nhbc-standards.co.uk/9-finishes/9-1-a-consistent-approach-to-finishes/9-1-4-doors-and-windows/]
		+
		+	[https://www.greenbuildingstore.co.uk/understanding-windows-u-values-psi-values-g-values/ https://www.greenbuildingstore.co.uk/understanding-windows-u-values-psi-values-g-values/]

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

Editor at 07:45, 13 July 2022

2022-07-13T07:45:34Z

← Older revision		Revision as of 07:45, 13 July 2022
Line 1:		Line 1:
−	~~The term structural opening (sometimes called rough opening) refers to the size~~ of ~~an opening in a wall or facade where a window or door or other unit will be installed. It is normally slightly larger than~~ the actual unit size to allow for tolerances in construction. The structural openings are called as such because their edges are most likely made up of main structural elements such as columns, brick or blockwork. The term ~~finished opening may also sometimes be used, which is similar in that is the opening to house the unit but may refer to an opening that might be boxed out or finished in someway.~~	+	= Use of the term =

−	For example a structural opening to the edge of ~~the~~ blockwork might be ~~a standard 2200mm x 1200mm~~, ~~this~~ may ~~then~~ be	+	The term structural opening (sometimes called rough opening) refers to the size of an opening in a wall or facade where a window or door or other unit will be installed. It is normally slightly larger than the actual unit size to allow for tolerances in construction. The structural openings are called as such because their edges are most likely meet with structural elements of the buildings such as columns, bricks or blockwork.
		+
		+	= Finished opening =
		+
		+	The term finished opening may also sometimes be used, which is similar in that is the opening to house the unit in a facade or wall though the opening may have been prepared in some way, for instance with plywood boxing, plaster or render between the structural element and the location of the window or other unit.
		+
		+	= Tolerances =
		+
		+	For example the width of a structural opening to the edge of brick and blockwork might be 910mm, the finished opening may have a lining of 10mm creating a finished opening that is 900mm wide, whilst the unit size that is intended to be installed is 890mm wide.
		+
		+	NHBC guidance 9.1.4 Doors and windows discusses appropriate tolerances: "Doors and windows shall be installed to appropriate tolerances, including openings in walls and external openings viewed from the inside."
		+
		+	= Thermal performance =
		+
		+	It should be noted that how a window or any unit installed into a structural can have an impact on fabric performance, as the opening punctuates the building fabric from inside to outside. A Psi ( or ψ value) is a Greek letter that denotes heat loss over a given length rather than a given area. The thermal performance of a window should be calculated including an adjustment for the interface between the window unit and the structural or finished opening, this installation adjustment is often known as the window or installation Psi (ψw). It is an adjustment to the thermal performance of a window allowing for heat loss along the linear junction between the installed window and the edge of the opening.
		+
		+	= Related articles on Designing Buildings =
		+
		+	* Building.
		+	* Bespoke window.
		+	* Bay window.
		+	* Bullseye window.
		+	* Clerestory.
		+	* Crittall metal windows.
		+	* Concept structural design of buildings.
		+	* Domestic windows.
		+	* Double glazing.
		+	* Double glazing v triple glazing.
		+	* Easily accessible window.
		+	* Elements of structure in buildings
		+	* Frame factor.
		+	* Fenestration.
		+	* Furnishings.
		+	* Glass manifestation.
		+	* Glass.
		+	* Glazing.
		+	* Historic steel-framed windows.
		+	* Jamb.
		+	* Laced window.
		+	* Light well.
		+	* Louvre (or louver).
		+	* Plate glass.
		+	* Principles of enclosure.
		+	* Structure.
		+	* Structural systems.
		+	* Structural systems for offices.
		+	* Superstructure.
		+	* Sash windows.
		+	* Security glazing.
		+	* Stained glass.
		+	* Types of structure.
		+	* Triple glazing.
		+	* Types of blinds.
		+	* Types of door.
		+	* Window and door schedules.
		+	* Window Energy Rating.
		+	* Window frame.
		+	* Window parts.
		+	* Windows.
		+
		+	[[Category:DCN_Definition]] [[Category:DCN_Product_Knowledge]] [[Category:Definitions]] [[Category:Standards_/_measurements]] [[Category:Sustainability]] [[Category:Construction_techniques]] [[Category:Products_/_components]]

Editor at 08:47, 12 July 2022

2022-07-12T08:47:20Z

← Older revision		Revision as of 08:47, 12 July 2022
Line 1:		Line 1:
−	The term structural opening (sometimes called rough opening) refers to the size of opening in a wall where a window or door will be installed. It is normally slightly larger than the actual ~~window~~ unit size to allow for tolerances in construction. The structural opening ~~will~~ be the opening ~~sizes left after~~ the ~~main structure~~ or ~~a building is complete. The term~~ finished opening	+	The term structural opening (sometimes called rough opening) refers to the size of an opening in a wall or facade where a window or door or other unit will be installed. It is normally slightly larger than the actual unit size to allow for tolerances in construction. The structural openings are called as such because their edges are most likely made up of main structural elements such as columns, brick or blockwork. The term finished opening may also sometimes be used, which is similar in that is the opening to house the unit but may refer to an opening that might be boxed out or finished in someway.
		+
		+	For example a structural opening to the edge of the blockwork might be a standard 2200mm x 1200mm, this may then be

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2022-07-12T08:01:43Z

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The term structural opening (sometimes called rough opening) refers to the size of opening in a wall where a window or door will be installed. It is normally slightly larger than the actual window unit size to allow for tolerances in construction. The structural opening will be the opening sizes left after the main structure or a building is complete. The term finished opening