How to read technical drawings - Revision history

Designing Buildings at 11:56, 15 September 2020

2020-09-15T11:56:07Z

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	* VistaIndustrial - [http://www.vista-industrial.com/blog/how-to-read-a-manufacturing-drawing/ How to read a drawing]		* VistaIndustrial - [http://www.vista-industrial.com/blog/how-to-read-a-manufacturing-drawing/ How to read a drawing]

−	[[Category:~~Education~~]] [[Category:~~DCN_Education_and_Training~~]] [[Category:Standards_/_measurements~~]] [[Category:DCN_Standard~~]] [[Category:Design]] [[Category:Products_/_components~~]] [[Category:DCN_Product_Knowledge~~]]	+	[[Category:DCN_Guidance]] [[Category:Education]] [[Category:Standards_/_measurements]] [[Category:Design]] [[Category:Products_/_components]]

Designing Buildings at 07:27, 3 August 2016

2016-08-03T07:27:05Z

← Older revision		Revision as of 07:27, 3 August 2016
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	For more information, see Symbols on architectural drawings.		For more information, see Symbols on architectural drawings.
		+
		+	= Notation and units =
		+
		+	The same notation conventions should be followed by all so that there is clear communication between different people and mistakes are avoided.
		+
		+	See Notation and units on drawings and documents for more information.

	= Circled numbers =		= Circled numbers =
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	* How to take off construction works.		* How to take off construction works.
	* Installation drawings.		* Installation drawings.
−	* Notation and ~~symbols~~.	+	* Notation and units on drawings and documents.
	* Paper sizes.		* Paper sizes.
	* Production information.		* Production information.
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	* VistaIndustrial - [http://www.vista-industrial.com/blog/how-to-read-a-manufacturing-drawing/ How to read a drawing]		* VistaIndustrial - [http://www.vista-industrial.com/blog/how-to-read-a-manufacturing-drawing/ How to read a drawing]

−	[[Category:Education]] [[Category:Standards_/_measurements]] [[Category:Design]] [[Category:Products_/_components]]	+	[[Category:Education]] [[Category:DCN_Education_and_Training]] [[Category:Standards_/_measurements]] [[Category:DCN_Standard]] [[Category:Design]] [[Category:Products_/_components]] [[Category:DCN_Product_Knowledge]]

Designing Buildings at 07:21, 3 August 2016

2016-08-03T07:21:50Z

← Older revision		Revision as of 07:21, 3 August 2016
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	* Revision: Identifies the correct version of the drawing, as it may have been revised several times.		* Revision: Identifies the correct version of the drawing, as it may have been revised several times.
	* Scale: Ratio of actual size compared to the size on the drawing / or 'do not scale' if dimensions are not to be relied upon.		* Scale: Ratio of actual size compared to the size on the drawing / or 'do not scale' if dimensions are not to be relied upon.
−	* Size: The original drawing sheet size (important for determining the scale for reproductions'.	+	* Size: The original drawing sheet size (important for determining the scale for reproductions'. See paper sizes for more information.

	= Revision block =		= Revision block =

−	~~The~~ revision block ~~is a panel of information~~ located in the top-right corner of the drawing~~. The revision block usually includes~~:	+	A separate revision block may be located in the top-right corner of the drawing, setting out:

	* The number of the revision.		* The number of the revision.
−	* The specific changes made to the previous ~~drawing~~.	+	* The specific changes made compared to the previous drawings.
−	* The date that the ~~revision was~~ made.	+	* The date that the revisions were made.
	* The approval of the revision.		* The approval of the revision.

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	It is essential to understand the size scale that the drawing has been produced to. Actual size is 1:1. Where the scale is 100:1, it means that the actual size is 100 times that shown on the drawing; the first number represents the size of the physical element, and the second number represents the drawing. It is usual that the scale will be provided in the title block.		It is essential to understand the size scale that the drawing has been produced to. Actual size is 1:1. Where the scale is 100:1, it means that the actual size is 100 times that shown on the drawing; the first number represents the size of the physical element, and the second number represents the drawing. It is usual that the scale will be provided in the title block.
		+
		+	If the dimensions of elements on the drawing are not to be relied upon, for example if the drawing is a sketch, or if responsibility for determining dimensions are with another party, the scale may be followed by the statement 'do not scale' or 'not to scale'.

	= Basic symbols =		= Basic symbols =
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	= Circled numbers =		= Circled numbers =

−	~~It is often the case that the~~ scale of drawings ~~will~~ be too small to recreate the necessary detail. ~~Circled~~ numbers ~~are often~~ added to certain parts of the drawings, which indicate that the section identified is shown in greater detail on another page.#	+	The scale of drawings may be too small to recreate all the necessary detail. In this case, circled numbers can be added to certain parts of the drawings, which indicate that the section identified is shown in greater detail on another page.

	= Projections and views =		= Projections and views =

−	Drawings generally include ~~the~~ front, side and top of the object being designed~~. These are labelled ‘front view’, ‘top view’ and ‘side view’~~. These drawings are drawn in either parallel or perspective projections.	+	Drawings generally include front, side and top of views of the object being designed. These drawings are typically drawn in either parallel or perspective projections:

−	Parallel projections include orthographic drawings in which the four orthogonal views of an object are shown.	+	* Parallel projections include orthographic drawings in which the four orthogonal views of an object are shown.
−		+	* Perspective projections are drawings in which an object is drawn using one-, two- or three-point perspective; presenting the object as three-dimensional.
−	Perspective projections are drawings in which an object is drawn using one-, two- or three-point perspective; presenting the object as three-dimensional.	+

	For more information, see Drawing projections.		For more information, see Drawing projections.

−	Section views show a structure as though it ~~had~~ been sliced in half or cut along another imaginary plane. For more information, see Section drawing.	+	Section views may also be included which show a structure as though it has been sliced in half or cut along another imaginary plane. For more information, see Section drawing.
		+
		+	Exploded views may also be shown, which show how an item is assembled. See Assembly drawing for more information.

	= Abbreviations =		= Abbreviations =

−	Similar to circled numbers, abbreviations are used to indicate elements and instructions. Some ~~of the most~~ common abbreviations used in drawings include:	+	Similar to circled numbers, abbreviations are used to indicate elements and instructions. Some common abbreviations used in drawings include:

	* & - and		* & - and
−	* ACT - acoustic ceiling tile
−	* AD - area drain
	* AFF - above finished floor		* AFF - above finished floor
−	* ALUM - aluminium
−	* ANOD - anodised
	* BSMT - basement		* BSMT - basement
	* BYND - beyond		* BYND - beyond
	* BOT - bottom		* BOT - bottom
−	* CIP - cast in place
−	* CHNL - channel
−	* CJ - control joint
	* CLG - ceiling		* CLG - ceiling
−	* CMU - concrete masonry unit
−	* COL - column
−	* COMPR - compressible
−	* CONC - concrete
	* CONT - continuous		* CONT - continuous
	* CPT - carpet		* CPT - carpet
−	* CT - ceramic tile
	* DBL - double		* DBL - double
	* DEMO - demolition		* DEMO - demolition
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	* ELEV - elevator/elevation		* ELEV - elevator/elevation
	* EXT - exterior		* EXT - exterior
−	* FD - floor drain
	* FIXT - fixture		* FIXT - fixture
	* FLR - floor		* FLR - floor
	* FND - foundation		* FND - foundation
	* GA - gauge		* GA - gauge
−	* GALV - galvanised
	* HI - high		* HI - high
−	* HM - hollow metal
	* HP - high point		* HP - high point
	* HVAC - heating, ventilating and air conditioning		* HVAC - heating, ventilating and air conditioning
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	* INT - interior		* INT - interior
	* LO - low		* LO - low
−	* MO - masonry opening
	* MECH - mechanical		* MECH - mechanical
	* MEMBR - membrane		* MEMBR - membrane
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	* NOM - nominal		* NOM - nominal
	* OC - on centre		* OC - on centre
−	* PCC - pre-cast concrete
	* PLUMB - plumbing		* PLUMB - plumbing
	* PLYD - plywood		* PLYD - plywood
−	* PT - pressure treated
	* PNT - paint/painted		* PNT - paint/painted
	* PVC - polyvinyl chloride		* PVC - polyvinyl chloride
−	* RBR - rubber
−	* RD - roof drain
	* REQD - required		* REQD - required
	* RM - room		* RM - room
	* SIM - similar		* SIM - similar
	* SPEC - specified		* SPEC - specified
−	* SSTL - stainless steel
−	* STL - steel
	* STRUCT - structure		* STRUCT - structure
−	* T&G - tongue and groove
−	* TLT - toilet
	* TO - top of		* TO - top of
−	* TOC - top of concrete
	* UNO - unless noted otherwise		* UNO - unless noted otherwise
	* U/S - underside		* U/S - underside
	* VIF - verify in field		* VIF - verify in field
	* W/ - with		* W/ - with
−	* WD - wood	+
		+	For more information see Acronyms.

	= Find out more =		= Find out more =

88.109.88.198 at 07:11, 3 August 2016

2016-08-03T07:11:50Z

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	= Introduction =		= Introduction =

−	The term ‘technical drawing’ has a very broad meaning, referring to any drawing that conveys the way that something functions or how it is constructed. Most drawings prepared during the design and construction of buildings might be considered to be technical drawings.	+	The term ‘technical drawing’ has a very broad meaning, referring to any drawing that conveys the way that something functions or how it is constructed. Most drawings prepared during the later stages of the design and construction of buildings might be considered to be technical drawings.

−	It is important that the purpose for which technical drawings are being prepared and the people that will use them are carefully considered to ensure they are properly structured and adopt an appropriate presentational techniques.	+	It is important that the purpose for which technical drawings are being prepared and the people that will use them are carefully considered to ensure they are properly structured and adopt an appropriate presentational techniques. It is also important to have an understanding of how to read them.

−	~~As well as technical drawings being prepared properly, it is important to have an understanding~~ of ~~how~~ to ~~read them~~.	+	Some of the components common to many types of technical drawing are set out below.

−	Most drawings contain a border around them which include letters and numbers to delineate zones, in the same way as a map, to help locate and pinpoint certain areas. The letters are in alphabetical order from the bottom up on the vertical axis. The numbers are in numerical order from right to left on the horizontal access. The zones are to be read from right to left.	+	= Border =

−	~~In addition~~ to ~~this~~, ~~there~~ are ~~various ways~~ in ~~which~~ to read ~~technical drawings correctly:~~	+	Most drawings have a border around them. This helps ensure that the full drawing is included in reproductions.
		+
		+	The border sometimes includes letters and numbers to delineate zones, in the same way as a map, to help locate and pinpoint certain areas. These letters are in alphabetical order from the bottom up on the vertical axis. The numbers are in numerical order from right to left on the horizontal access. The zones are to be read from right to left.

	= Title block =		= Title block =

−	~~The~~ title block ~~is a panel~~ in the bottom-right corner of a drawing ~~which~~ contains information related to the drawing~~. The usual information listed in the title block includes~~:	+	A title block will typically appear in the bottom-right corner of a drawing and contains information related to the drawing, including:

−	* Name: ~~Company~~ or agency ~~who~~ prepared the drawing.	+	* Name: The company or agency that prepared the drawing.
	* Address: Location of the company or agency.		* Address: Location of the company or agency.
−	* ~~Name~~ and ~~date~~: ~~Professionals~~ who drew, checked and approved the drawing, and the date they did so.	+	* Names and dates: Individuals who drew, checked and approved the drawing, and the date they did so.
−	* Description: What the drawing is.	+	* Project: The project the drawing relates to.
		+	* Description: What the drawing is of.
		+	* Status: What the drawing is for (eg for construction / for information).
	* Drawing number: The assigned number to identify the drawing.		* Drawing number: The assigned number to identify the drawing.
	* Revision: Identifies the correct version of the drawing, as it may have been revised several times.		* Revision: Identifies the correct version of the drawing, as it may have been revised several times.
−	* Scale: Ratio of actual size compared to the size on the drawing.	+	* Scale: Ratio of actual size compared to the size on the drawing / or 'do not scale' if dimensions are not to be relied upon.
−	* Size: ~~Specifies the~~ drawing sheet size.	+	* Size: The original drawing sheet size (important for determining the scale for reproductions'.

	= Revision block =		= Revision block =

Editor at 11:51, 2 August 2016

2016-08-02T11:51:16Z

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−	[[File:Layout.gif\|~~580px~~]]	+	[[File:Layout.gif\|link=File:Layout.gif]]

	= Introduction =		= Introduction =
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	Section views show a structure as though it had been sliced in half or cut along another imaginary plane. For more information, see Section drawing.		Section views show a structure as though it had been sliced in half or cut along another imaginary plane. For more information, see Section drawing.

−	=== Abbreviations ===	+	= Abbreviations =

	Similar to circled numbers, abbreviations are used to indicate elements and instructions. Some of the most common abbreviations used in drawings include:		Similar to circled numbers, abbreviations are used to indicate elements and instructions. Some of the most common abbreviations used in drawings include:

Editor: Created page with "580px = Introduction = The term ‘technical drawing’ has a very broad meaning, referring to any drawing that conveys the way that something functions or ..."

2016-08-02T11:50:36Z

Created page with "580px = Introduction = The term ‘technical drawing’ has a very broad meaning, referring to any drawing that conveys the way that something functions or ..."

New page

[[File:Layout.gif|580px]]

= Introduction =

The term ‘technical drawing’ has a very broad meaning, referring to any drawing that conveys the way that something functions or how it is constructed. Most drawings prepared during the design and construction of buildings might be considered to be technical drawings.

It is important that the purpose for which technical drawings are being prepared and the people that will use them are carefully considered to ensure they are properly structured and adopt an appropriate presentational techniques.

As well as technical drawings being prepared properly, it is important to have an understanding of how to read them.

Most drawings contain a border around them which include letters and numbers to delineate zones, in the same way as a map, to help locate and pinpoint certain areas. The letters are in alphabetical order from the bottom up on the vertical axis. The numbers are in numerical order from right to left on the horizontal access. The zones are to be read from right to left.

In addition to this, there are various ways in which to read technical drawings correctly:

= Title block =

The title block is a panel in the bottom-right corner of a drawing which contains information related to the drawing. The usual information listed in the title block includes:

* Name: Company or agency who prepared the drawing.
* Address: Location of the company or agency.
* Name and date: Professionals who drew, checked and approved the drawing, and the date they did so.
* Description: What the drawing is.
* Drawing number: The assigned number to identify the drawing.
* Revision: Identifies the correct version of the drawing, as it may have been revised several times.
* Scale: Ratio of actual size compared to the size on the drawing.
* Size: Specifies the drawing sheet size.

= Revision block =

The revision block is a panel of information located in the top-right corner of the drawing. The revision block usually includes:

* The number of the revision.
* The specific changes made to the previous drawing.
* The date that the revision was made.
* The approval of the revision.

= Scale =

It is essential to understand the size scale that the drawing has been produced to. Actual size is 1:1. Where the scale is 100:1, it means that the actual size is 100 times that shown on the drawing; the first number represents the size of the physical element, and the second number represents the drawing. It is usual that the scale will be provided in the title block.

= Basic symbols =

Architectural symbols are often used to identify common features such as topography, brickwork, doors, windows, fixtures and other elements. Understanding these, or having access to a key which notates them, will be useful in terms of interpreting the drawing.

For more information, see Symbols on architectural drawings.

= Circled numbers =

It is often the case that the scale of drawings will be too small to recreate the necessary detail. Circled numbers are often added to certain parts of the drawings, which indicate that the section identified is shown in greater detail on another page.#

= Projections and views =

Drawings generally include the front, side and top of the object being designed. These are labelled ‘front view’, ‘top view’ and ‘side view’. These drawings are drawn in either parallel or perspective projections.

Parallel projections include orthographic drawings in which the four orthogonal views of an object are shown.

Perspective projections are drawings in which an object is drawn using one-, two- or three-point perspective; presenting the object as three-dimensional.

For more information, see Drawing projections.

Section views show a structure as though it had been sliced in half or cut along another imaginary plane. For more information, see Section drawing.

=== Abbreviations ===

Similar to circled numbers, abbreviations are used to indicate elements and instructions. Some of the most common abbreviations used in drawings include:

* & - and
* ACT - acoustic ceiling tile
* AD - area drain
* AFF - above finished floor
* ALUM - aluminium
* ANOD - anodised
* BSMT - basement
* BYND - beyond
* BOT - bottom
* CIP - cast in place
* CHNL - channel
* CJ - control joint
* CLG - ceiling
* CMU - concrete masonry unit
* COL - column
* COMPR - compressible
* CONC - concrete
* CONT - continuous
* CPT - carpet
* CT - ceramic tile
* DBL - double
* DEMO - demolition
* DIA - diameter
* DIM - dimension
* DN - down
* DP - depth
* DR - door
* DWG - drawing
* EA - each
* EJ - expansion joint
* EL - elevation
* ELEC - electrical
* ELEV - elevator/elevation
* EXT - exterior
* FD - floor drain
* FIXT - fixture
* FLR - floor
* FND - foundation
* GA - gauge
* GALV - galvanised
* HI - high
* HM - hollow metal
* HP - high point
* HVAC - heating, ventilating and air conditioning
* INSUL - insulation
* INT - interior
* LO - low
* MO - masonry opening
* MECH - mechanical
* MEMBR - membrane
* MTL - metal
* NO - number
* NOM - nominal
* OC - on centre
* PCC - pre-cast concrete
* PLUMB - plumbing
* PLYD - plywood
* PT - pressure treated
* PNT - paint/painted
* PVC - polyvinyl chloride
* RBR - rubber
* RD - roof drain
* REQD - required
* RM - room
* SIM - similar
* SPEC - specified
* SSTL - stainless steel
* STL - steel
* STRUCT - structure
* T&G - tongue and groove
* TLT - toilet
* TO - top of
* TOC - top of concrete
* UNO - unless noted otherwise
* U/S - underside
* VIF - verify in field
* W/ - with
* WD - wood

= Find out more =

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

* As-built drawings and record drawings.
* Assembly drawing.
* Component drawing.
* Computer aided design.
* Concept drawing.
* Detail drawing.
* Elevations.
* Engineering drawing.
* General arrangement drawing.
* How to take off construction works.
* Installation drawings.
* Notation and symbols.
* Paper sizes.
* Production information.
* Projections.
* Section drawing.
* Symbols on architectural drawings.
* Types of drawing.
* Working drawing.

=== External references ===

* VistaIndustrial - [http://www.vista-industrial.com/blog/how-to-read-a-manufacturing-drawing/ How to read a drawing]

[[Category:Education]] [[Category:Standards_/_measurements]] [[Category:Design]] [[Category:Products_/_components]]