Measurement of existing buildings - Revision history

Designing Buildings at 08:27, 4 January 2022

2022-01-04T08:27:21Z

← Older revision		Revision as of 08:27, 4 January 2022
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	Taking photographs of each room/area can be useful later for checking purposes.		Taking photographs of each room/area can be useful later for checking purposes.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings =
−		+
−	=== Related articles on Designing Buildings ~~Wiki ==~~=	+

	* 3D laser survey.		* 3D laser survey.
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	* Net internal area.		* Net internal area.
	* Site surveys.		* Site surveys.
		+	* Size.
	* Total useful floor area.		* Total useful floor area.
	* Types of drawing.		* Types of drawing.

	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]] [[Category:Construction_techniques]] [[Category:Property_development]]		[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]] [[Category:Construction_techniques]] [[Category:Property_development]]

Designing Buildings at 06:03, 5 October 2020

2020-10-05T06:03:20Z

← Older revision		Revision as of 06:03, 5 October 2020
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	* Types of drawing.		* Types of drawing.

−	[[Category:~~Standards_/_measurements~~]] [[Category:DCN_Standard]] [[Category:Construction_techniques]] [[Category:Property_development]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Standard]] [[Category:Standards_/_measurements]] [[Category:Construction_techniques]] [[Category:Property_development]]

Editor at 11:53, 17 September 2018

2018-09-17T11:53:18Z

← Older revision		Revision as of 11:53, 17 September 2018
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	* Personal protective equipment (PPE).		* Personal protective equipment (PPE).

−	NB ~~devices~~ and software are available to assist with surveys, allowing sketches, notes, photographs and so on to be recorded and linked.	+	NB: Devices and software are available to assist with surveys, allowing sketches, notes, photographs, and so on, to be recorded and linked.

	= Before survey =		= Before survey =

−	It is helpful before undertaking a survey, to do some preliminary investigation into the building as a means of gaining familiarity with it. OS maps and Google Maps can help provide some idea of the building’s locality in relation to its surrounding geography, the building’s shape, orientation, and so on. There may also be existing drawings that can be used as the basis of the survey, and the client, or occupant may be able to provide important information, such as whether the building is safe, whether it will be possible to access all areas and so on.	+	It is helpful before undertaking a survey, to do some preliminary investigation into the building as a means of gaining familiarity with it. OS maps and Google Maps can help provide some idea of the building’s locality in relation to its surrounding geography, the building’s shape, orientation, and so on. There may also be existing drawings that can be used as the basis of the survey, and the client, or occupant may be able to provide important information, such as whether the building is safe, whether it will be possible to access all areas, and so on.

−	It is important to formally agree the extent of the measurement that is required. For example, only simple layouts may be required, or more detailed drawings of plans, elevations and sections, including positions of fixtures, fittings, switches, sockets and so on. In some cases, the intention may be to create a 3-dimensional model. Historic buildings in particular can include intricate details and may not be entirely rectilinear - if this level of detail is required, it can be extremely time consuming.	+	It is important to formally agree the extent of the measurement that is required. For example, only simple layouts may be required, or more detailed drawings of plans, elevations and sections, including positions of fixtures, fittings, switches, sockets and so on. In some cases, the intention may be to create a three-dimensional model. Historic buildings in particular can include intricate details and may not be entirely rectilinear - if this level of detail is required, it can be extremely time consuming.

−	If it is not clear the level of information that is required, repeat visits may be necessary and this can be both time consuming and expensive. If mistakes are made, this can also prove extremely problematic - for example if a space is measured and then relied upon for the fabrication of a staircase to go into the space, and then the staircase does not fit. In such cases, it can be wise for the fabricator to be told to take their own measurements. In any case, survey drawings should make clear the purposes for which they can be relied, for example 'not for construction'.	+	If it is not clear the level of information that is required, repeat visits may be necessary and this can be both time consuming and expensive. If mistakes are made, this can also prove extremely problematic - for example, if a space is measured and then relied upon for the fabrication of a staircase to go into the space, and then the staircase does not fit. In such cases, it can be wise for the fabricator to be told to take their own measurements. In any case, survey drawings should make clear the purposes for which they can be relied, for example, 'not for construction'.

	Photography may be used to supplement the measurements and provide a record that can be referred back to. In some cases, laser scanning may be undertaken.		Photography may be used to supplement the measurements and provide a record that can be referred back to. In some cases, laser scanning may be undertaken.
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	=== Heights ===		=== Heights ===

−	Heights from floor to ceiling should be measured, along with floor and wall thicknesses. To measure a roof height externally, measure a floor to the underside of the eaves. If there is a uniform façade (i.e. bricks, regular stonework, blockwork, etc.), then it is possible to calculate distances by counting the bricks/blocks and multiplying them by the length or ~~hieght~~ of the brick / block - not forgetting to add on the width of joints.	+	Heights from floor to ceiling should be measured, along with floor and wall thicknesses. To measure a roof height externally, measure a floor to the underside of the eaves. If there is a uniform façade (i.e. bricks, regular stonework, blockwork, etc.), then it is possible to calculate distances by counting the bricks/blocks and multiplying them by the length or height of the brick/block - not forgetting to add on the width of joints.

	=== Floor thicknesses ===		=== Floor thicknesses ===
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	=== Annotation ===		=== Annotation ===

−	There are a number of standard symbols and notations that can be used to speed up the process of surveying. See Symbols on architectural drawings and Notation and units on drawings and documents for more information.	+	There are a number of standard symbols and notations that can be used to speed up the process of surveying.
		+
		+	See Symbols on architectural drawings and Notation and units on drawings and documents for more information.

	=== Clarity ===		=== Clarity ===
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	* 3D laser survey.		* 3D laser survey.
		+	* Area.
	* Building survey.		* Building survey.
	* How to layout a building.		* How to layout a building.
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	* Types of drawing.		* Types of drawing.

−	[[Category:Standards_/_measurements]] [[Category:Construction_techniques]] [[Category:Property_development]]	+	[[Category:Standards_/_measurements]] [[Category:DCN_Standard]] [[Category:Construction_techniques]] [[Category:Property_development]]

Designing Buildings at 14:01, 21 February 2017

2017-02-21T14:01:55Z

← Older revision		Revision as of 14:01, 21 February 2017
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	* Tape measure.		* Tape measure.
	* Camera.		* Camera.
		+	* Voice recorder.
		+	* Digital recording device such as a tablet.
	* Personal protective equipment (PPE).		* Personal protective equipment (PPE).
		+
		+	NB devices and software are available to assist with surveys, allowing sketches, notes, photographs and so on to be recorded and linked.

	= Before survey =		= Before survey =

Designing Buildings at 13:59, 21 February 2017

2017-02-21T13:59:41Z

← Older revision		Revision as of 13:59, 21 February 2017
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	* Site surveys.		* Site surveys.
	* Total useful floor area.		* Total useful floor area.
		+	* Types of drawing.

	[[Category:Standards_/_measurements]] [[Category:Construction_techniques]] [[Category:Property_development]]		[[Category:Standards_/_measurements]] [[Category:Construction_techniques]] [[Category:Property_development]]

Designing Buildings at 13:59, 21 February 2017

2017-02-21T13:59:00Z

← Older revision		Revision as of 13:59, 21 February 2017
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	To represent variations in ground level, a constant feature on the elevation should be identified (such as a window cill), and from ground to this point measured around the building.		To represent variations in ground level, a constant feature on the elevation should be identified (such as a window cill), and from ground to this point measured around the building.
		+
		+	=== Annotation ===
		+
		+	There are a number of standard symbols and notations that can be used to speed up the process of surveying. See Symbols on architectural drawings and Notation and units on drawings and documents for more information.

	=== Clarity ===		=== Clarity ===

	Complex buildings can require a great number of measurements are taken, and this can be confusing later when trying to interpret what has been recorded.		Complex buildings can require a great number of measurements are taken, and this can be confusing later when trying to interpret what has been recorded.
		+
		+	At the most simple level, it is important that it is clear what distance a particular measurement refers to. This is generally done by drawing a line with a diagonal cross at each end showing the extent of the measurement.

	Using colour-coding to reference the different measurements (e.g. one colour for general drawing and measurements, one colour for heights and levels, and so on), can save time and confusion when later trying to decipher the various numbers on the drawings.		Using colour-coding to reference the different measurements (e.g. one colour for general drawing and measurements, one colour for heights and levels, and so on), can save time and confusion when later trying to decipher the various numbers on the drawings.

Designing Buildings at 13:53, 21 February 2017

2017-02-21T13:53:41Z

← Older revision		Revision as of 13:53, 21 February 2017
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	It can be helpful, depending on the building’s size, to divide it into sections, drawing out each roughly at a large enough scale to add the dimensions comfortably. The building can either be measured one section at a time, or all in one go when all the drawings are done.		It can be helpful, depending on the building’s size, to divide it into sections, drawing out each roughly at a large enough scale to add the dimensions comfortably. The building can either be measured one section at a time, or all in one go when all the drawings are done.
		+
		+	Where more intricate details are required, these may be drawn separately.

	Measuring typically starts in one corner of the room, before proceeding around in either a clockwise or anti-clockwise direction. To assist with general accuracy, some measurements diagonally across the room should also be taken to verify that walls are parallel and corners are ninety degrees.		Measuring typically starts in one corner of the room, before proceeding around in either a clockwise or anti-clockwise direction. To assist with general accuracy, some measurements diagonally across the room should also be taken to verify that walls are parallel and corners are ninety degrees.

Designing Buildings at 13:53, 21 February 2017

2017-02-21T13:53:07Z

← Older revision		Revision as of 13:53, 21 February 2017
Line 13:		Line 13:
	= Before survey =		= Before survey =

−	It is helpful before undertaking a survey, to do some preliminary investigation into the building as a means of gaining familiarity with it. OS maps and Google Maps can help provide some idea of the building’s locality in relation to its surrounding geography, the building’s shape, orientation, and so on. There may also be existing drawings that can be used as the basis of the survey, and the client, or occupant may be able to provide important information, such as whether the building is safe.	+	It is helpful before undertaking a survey, to do some preliminary investigation into the building as a means of gaining familiarity with it. OS maps and Google Maps can help provide some idea of the building’s locality in relation to its surrounding geography, the building’s shape, orientation, and so on. There may also be existing drawings that can be used as the basis of the survey, and the client, or occupant may be able to provide important information, such as whether the building is safe, whether it will be possible to access all areas and so on.

	It is important to formally agree the extent of the measurement that is required. For example, only simple layouts may be required, or more detailed drawings of plans, elevations and sections, including positions of fixtures, fittings, switches, sockets and so on. In some cases, the intention may be to create a 3-dimensional model. Historic buildings in particular can include intricate details and may not be entirely rectilinear - if this level of detail is required, it can be extremely time consuming.		It is important to formally agree the extent of the measurement that is required. For example, only simple layouts may be required, or more detailed drawings of plans, elevations and sections, including positions of fixtures, fittings, switches, sockets and so on. In some cases, the intention may be to create a 3-dimensional model. Historic buildings in particular can include intricate details and may not be entirely rectilinear - if this level of detail is required, it can be extremely time consuming.

Designing Buildings at 13:52, 21 February 2017

2017-02-21T13:52:24Z

← Older revision		Revision as of 13:52, 21 February 2017
Line 17:		Line 17:
	It is important to formally agree the extent of the measurement that is required. For example, only simple layouts may be required, or more detailed drawings of plans, elevations and sections, including positions of fixtures, fittings, switches, sockets and so on. In some cases, the intention may be to create a 3-dimensional model. Historic buildings in particular can include intricate details and may not be entirely rectilinear - if this level of detail is required, it can be extremely time consuming.		It is important to formally agree the extent of the measurement that is required. For example, only simple layouts may be required, or more detailed drawings of plans, elevations and sections, including positions of fixtures, fittings, switches, sockets and so on. In some cases, the intention may be to create a 3-dimensional model. Historic buildings in particular can include intricate details and may not be entirely rectilinear - if this level of detail is required, it can be extremely time consuming.

−	If it is not clear the level of information that is required, repeat visits may be necessary and this can be both time consuming and expensive.	+	If it is not clear the level of information that is required, repeat visits may be necessary and this can be both time consuming and expensive. If mistakes are made, this can also prove extremely problematic - for example if a space is measured and then relied upon for the fabrication of a staircase to go into the space, and then the staircase does not fit. In such cases, it can be wise for the fabricator to be told to take their own measurements. In any case, survey drawings should make clear the purposes for which they can be relied, for example 'not for construction'.

	Photography may be used to supplement the measurements and provide a record that can be referred back to. In some cases, laser scanning may be undertaken.		Photography may be used to supplement the measurements and provide a record that can be referred back to. In some cases, laser scanning may be undertaken.

Designing Buildings at 13:48, 21 February 2017

2017-02-21T13:48:47Z

← Older revision		Revision as of 13:48, 21 February 2017
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	=== Triangulation ===		=== Triangulation ===

−	Triangulation is ~~a method~~ used to measure the ~~corner~~ angles ~~of rooms~~, as it cannot always be assumed that they will be exactly 90-degrees. A ~~random~~ point on one wall is measured to the corner. Another ~~random~~ point on the adjoining wall is measured to the same corner. Then a measurement is taken of the distance ~~across~~ from one point to the other. This provides measurements for the three sides of the triangle, from which the angle can be calculated.	+	Triangulation is used to measure the angles between features, as it cannot always be assumed that they will be exactly 90-degrees. A point on one wall is measured to the corner. Another point on the adjoining wall is measured to the same corner. Then a measurement is taken of the distance from one point to the other. This provides measurements for the three sides of the triangle, from which the angle can be calculated.

−	~~Taking photographs of each room/area is important for later checking purposes.~~	+	=== Heights ===

−	Heights from floor to ceiling should be measured, along with floor and wall thicknesses. To measure a roof height externally, measure a floor to the underside of the eaves. If there is a uniform façade (i.e. bricks, regular stonework, blockwork, etc.), then it is possible to ~~measure from good photographs~~ by counting the bricks/blocks.	+	Heights from floor to ceiling should be measured, along with floor and wall thicknesses. To measure a roof height externally, measure a floor to the underside of the eaves. If there is a uniform façade (i.e. bricks, regular stonework, blockwork, etc.), then it is possible to calculate distances by counting the bricks/blocks and multiplying them by the length or hieght of the brick / block - not forgetting to add on the width of joints.

	=== Floor thicknesses ===		=== Floor thicknesses ===
Line 45:		Line 45:
	=== Variations in ground level ===		=== Variations in ground level ===

−	To ~~show the~~ variations in ground level, a constant feature on the elevation should be identified (such as a window cill), and from ground to this point measured around the building.	+	To represent variations in ground level, a constant feature on the elevation should be identified (such as a window cill), and from ground to this point measured around the building.
		+
		+	=== Clarity ===
		+
		+	Complex buildings can require a great number of measurements are taken, and this can be confusing later when trying to interpret what has been recorded.

	Using colour-coding to reference the different measurements (e.g. one colour for general drawing and measurements, one colour for heights and levels, and so on), can save time and confusion when later trying to decipher the various numbers on the drawings.		Using colour-coding to reference the different measurements (e.g. one colour for general drawing and measurements, one colour for heights and levels, and so on), can save time and confusion when later trying to decipher the various numbers on the drawings.
		+
		+	Taking photographs of each room/area can be useful later for checking purposes.

	= Find out more =		= Find out more =