drafting standards


There are a lot of industries, schools, and companies that establish standards using guidelines and specifying drawing requirements, appearance, techniques, operating procedures, and record-keeping methods.

We, as the best Australian Standards provider company, defines the standard as a set of technical definitions and guidelines. It also includes how-to instructions for designers, manufacturers, and users. Additionally, the standards promote safety, reliability, efficiency and productivity in almost every industry that relies on engineered components or equipment. The standards can be as short as a few paragraphs or hundreds of pages long. Additionally, the experts write them with knowledge and expertise in a particular field that sits on many committees. The Australian Drafting Standards is one or more governmental bodies that adapt and have the force of law.


The Drafting Standard is considered voluntary because they serve as guidelines. The standards become mandatory when a business contract or regulations incorporate them. It’s crucial for engineering communication as they use a common language, defining quality and establishing safety criteria.

The costs are lower, and the training is simplified, whereas the procedures are standardized. Interchangeability is a critical reason for standardization. It’s a part manufactured in one location that fits with a mating part manufactured in another location.

The Drawing standards apply primarily used in settings and procedures, including:

CADD file storage, file templates, and other files contain standard file settings and objects for use in new files. Additionally, it covers Units of layout, borders and title, symbols, layers, text, table, dimension, and other drafting styles and plotting.

The company or school drawing standards follow appropriate national industry standards. It varies in content, where the most crucial aspect is used in standards and used by all design and drafting personnel. They follow drawing standards, where drawings are consistent and become more productive.

Australian Drafting Standards

We are an excellent professional engineering organization for mechanical engineering that use standards Australia publishes. The documents sponsor technical conferences and educational programs, including professional development courses. We are an accredited standard developing organization that meets the requirements of various codes. Along with this, our standard publishes numerous disciplines. Our drafting standards mainly focus on specific areas of engineering drawing related to practices received through designation.

ISO Drafting Standards

CADD Skill Standards

The CADD (Computer-Aided Drafting and Design )skill standards help develop and cooperate with the National occupational skill standards. It summarizes CADD occupation skills generic with all CADD disciplines, software, and entry-level.

AS 1100

Taking about AS 1100, It’s an Australian Standard for technical drawing that includes mechanical and architectural designs. AS 1100 standard drawings support attributes that are universal around Australia. The drafting standard publishes them and helps till the last stage.

The standard consists of six parts,

  • Part 101: General principles (1992)
  • Part 201: Mechanical engineering drawing (1992)
  • Part 301: Architectural drawing (2008)
  • Part 401: Engineering survey and engineering survey design drawing (1984)
  • Part 501: Structural engineering drawing (2002)

You cannot view these without purchasing a licence first.

Acronyms and Abbreviations in Engineering


A – Ampere A/C – Air Conditioning A/H – After Hours AB – As-Built ABBR – Abbreviation ABS – Absolute ADD – Addendum AEC – Architecture, Engineering, and Construction AF – Across Flats AFL – Above Floor Level AFL – Above Finished Level AG – Agricultural pipe drain AGL – Above Ground Level AHD – Australian Height Datum AHU – Air Handler Unit APPROX – Approximately or Approximate ARRGT – Arrangement AS – Australian Standard ASCII – American Standard Code for Information Interchange ASSD – Assumed Datum ASSY – Assembly ATF – Along Top Flange AUTO – Automatic AUX – Auxillary AVG – Average


B – Basin or Bottom BLDG – Building BNS – Business Network Services BOT – Bottom BQ – Bendable Quality BRG – Bearing BRS – Brass BSP – British Standard Pipe BT – Bath Tub BT – Boundary Trap BTM – Bottom BW – Both Ways


C – C shaped steel purlin C/C – Cross Centres CAD – Computer-Aided Design.
Less commonly use is Computer Assisted Drafting. CAM – Computer Aided Manufacture CAP – Capacity CBORE – Counterbore CCTV – Closed Circuit Television CFW – Continuous Fillet Weld CHAM – Chamfer CHCL – Channel CH HD – Cheese Head CHS – Circular Hollow Section CI – Cast Iron CIRC – Circumference or Circle C.J. OR CJ – Control Joint (or Construction Joint) CL – Center Line CLG – Control Joint CLR – Clearance CMU – Cement Masonry Unit CNC – Computer Numerical Control CNR – Corner CNJ – Construction Joint COEF – Coefficient COL – Column COMMS – Communications CONC – Concentric CONN – Connection CONT – Continuous CP – Chrome Plated C REC HD – Cross-Recess Head CRS – Colled Rolled Steel CTRS – Centres CS – Cleaners Sink CS – Cast Steel CKS – Countersink CSK HD – Countersunk Head CT – Controller CTR – Contour CTR(S) – Centre/S CTRL – Control CTRS – Centers CU – Dental Cuspidor CUP HD – Cup Head CVR – Cover CYL – Cylinder °C – Degrees Celsius


DAR – Dressed All Round DD – Design Drawing DED – Dedendum DET – Detail DIA – Diameter DIAG – Diagram DIAG – Diagonal DICL – Ductile Iron Cement Lined (pipe) DIST – Distance DIM – Dimension DN – Diameter Nominal DP – Down Pipe DP – Diametral Pitch DR – Dryer DRG – Drawing DW – Dishwasher DWG – Drawing DWG(S) – Drawing/S


E – Modulus of Elasticity EA – Equal Angle (steel) EF – Each Face E.J. or EJ – Expansion Joint EL – Elevated Level EL – Elevation ELEC – Electrical ELEV – Elevation EQ – Equal EQUIP – Equipment EQUIV – Equivalent EW – Each Way EWB – Electric Water Boiler EWC – Electric Water Cooler EXT – External


FB – Footing Beam F’c – Characteristic Concrete Strength FCU – Fan Coil Unit FFL – Finished Floor Level FHR – Fire Hose Reel FIQ – Figure FILL HD – Fillister Head FL – Floor Level FL – Flat or Flat Plate FLG – Flange FOC – Fibre Optic Cable FS – Far Side FSBL – Full Strength Butt Weld FTG – Footing FTP – Fibre Termination Panel (fibre optical cable) FW – Fillet Weld FWF – From Web Face (steel)


GA – General Arrangement GALV – Galvanized GCI – Galvanized corrugated iron. GD – Grid GI – Galvanized Iron GIP – Galvanized Iron Pipe GIS – Graphic Information System GPO – General Purpose Outlet GR – Grade GRF – Geometric Reference Frame GSM – Global System of Moblie or “Groupe Speciale Mobile” in French


H – Prewash Hose Reel HD – Head HEX HD – Hexagon Head HEX SOC HD – Hexagon Socket Head HOR – Horizontal HORIZ – Horizontal HP – High Pressure HRA – Rockwell Hardness A HRB – Rockwell Hardness B HRC – Rockwell Hardness C HS – High Strength HT – Height HTS – High-Tensile Steel HV – Diamond Pyramid Hardness Number (Vickers) HWB – Hair Wash Basin


I – Moment of Inertia ID – Inside Diameter IE – Invert Elevation I.J. or IJ – Isolation Joint IL – Invert Level INT – Internal IO – Inspection Opening IP – Intersection Point ISO – International Standard Organisation


JIS – Japanese Industry Standard JT – Joint JUNC – Junction


kHz – Kilohertz K.J. or KJ – Key Joint KS – Kitchen Sink KWh – Kilo Watt Hour (metre)


L – Steel Angle LAN – Local Area Network LG – Length LGX – Line Group Cross (Connector, fibre optical cable) LH – Left Hand LMC – Least Material Condition LONG – Longitudinal LPG – Liquid Petroleum Gas LT – Laundry Trough


m – Metres (English) or Meters MATL – Material MAX – Maximum M/C – Machine MDF – Main Distribution Frame (Telecommunications) MFR – Manufacturer MHz – Megahertz Mickey Mouse – A toy project, of very low quality. MI – Malleable Iron MIN – Minimum MISC – Miscellaneous M.J. or MJ – Movement Joint mm – Millimetres MMC – Maximum Material Condition MOD – Modification MS – Mild Steel MTG – Mounting MUSH HD – Mushroom Head


NC – Normally Closed NEG – Negative NET – Network No. – Number NOM – Nominal NS – Near Side NS – Nominal Size N.S.O.P. – Not Shown On Plan NTS – Not To Scale NZS – New Zealand Standard


OA or O/A – Overall OCT – Octagon OD – Outside Diameter OPT – Optional


P – Pipe PA – Pressure Angle PAR – Parallel PATT – Pattern PCD – Pitch Circle Diameter PFC – Parallel Flange Channel PL – Plate PL – Pipeline POS – Positive POSN – Position PREFAB – Prefabricated PT – Pressure Tapping PT – Part PVC – Poly Vinyl Chloride uPVC – UV Stabilized Poly Vinyl Chloride


QTY – Quantity


R – Radius Ra – Roughness Value RAD – Radius or radial RD – Round REF – Reference RECT – Rectangular REINF – Reinforcement REQ’D or REQD – Required REV – Revision RH – Right Hand RHS – Rectangular Hollow Section (rarely Rolled Holled Section) RL – Reduced Level or Relative Level RO – Reverse Osmosis (water treatment) RSA – Rolled Steel Angle RSC – Rolled Steel Channel RSD CSK HD – Raised Countersunk Head RSJ – Rolled Steel Joist


S – Snug fit or tightened (bolts) S – Sink SAN – Sanitary SDU – Sanitary Disposal Unit SECT – Section SF – Strip Footing SF – Spot Face SFL – Structural Finished Level SH – Sheet SHR – Shower SHS – Square Hollow Section SIM – Similar SK – Sketch SL – Structural Level SPT – Spigot SQ – Square SS or S/S – Stainless Steel SSL – Structural Slab Level ST – Steel STD – Standard SW – Switch


T – Top TB – Tie Beam TB – Fully tensioned, bearing type (bolts) TEMP – Temperature TF – Fully tensioned, friction type (bolts) TFC – Taper Flange Channel THD – Thread THK – Thick TO or T.O. or T.OFF – Top Off TOL – Tolerance TP – Tangent Point TP – True Position TP – True Profile TR – Laundry Trough TUN – Tundish TYP – Typical


U/S – Under Side UA – Unequal Angle (steel) UB – Universal Beam (steel) UC – Universal Column (steel) UCUT – Undercut UNO – Unless Noted Otherwise (UON is prefered) UON – Unless Otherwise Noted uPVC – Unplasticized Polyvinyl Chloride UR – Urinal


VER – Vertical VERT – Vertical VOL – Volume


WAN – Wide Area Network WB – Welded Beam (steel) WC – Welded Column (steel) WC – Water Closet (toilet).
Where the poo and wee goes. WC(P) – Water Closet With ‘P’ Trap WC(S) – Water Closet With ‘S’ Trap WD – Working Drawing WM – Washing Machine WP – Water Proof or Work Point
WI – Wrought Iron


X – By. Example, “N12 x 1200 long” also means “N12 by 1200 long”.


YP – Yield Point


Z – Zulu (Greenwich Mean Time) Z – Z shaped steel purlin Z – Modulus of Section

Other Characters

°C – Degrees Celsius Ø – Diameter # – Number /tb – Fully tensioned, bearing type (bolts) /tf – Fully tensioned, friction type (bolts) /s – Snug fit or tightened (b

Welding Symbols Chart

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