2.3 Abbreviations
- Page ID
- 26780
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\(\newcommand{\avec}{\mathbf a}\) \(\newcommand{\bvec}{\mathbf b}\) \(\newcommand{\cvec}{\mathbf c}\) \(\newcommand{\dvec}{\mathbf d}\) \(\newcommand{\dtil}{\widetilde{\mathbf d}}\) \(\newcommand{\evec}{\mathbf e}\) \(\newcommand{\fvec}{\mathbf f}\) \(\newcommand{\nvec}{\mathbf n}\) \(\newcommand{\pvec}{\mathbf p}\) \(\newcommand{\qvec}{\mathbf q}\) \(\newcommand{\svec}{\mathbf s}\) \(\newcommand{\tvec}{\mathbf t}\) \(\newcommand{\uvec}{\mathbf u}\) \(\newcommand{\vvec}{\mathbf v}\) \(\newcommand{\wvec}{\mathbf w}\) \(\newcommand{\xvec}{\mathbf x}\) \(\newcommand{\yvec}{\mathbf y}\) \(\newcommand{\zvec}{\mathbf z}\) \(\newcommand{\rvec}{\mathbf r}\) \(\newcommand{\mvec}{\mathbf m}\) \(\newcommand{\zerovec}{\mathbf 0}\) \(\newcommand{\onevec}{\mathbf 1}\) \(\newcommand{\real}{\mathbb R}\) \(\newcommand{\twovec}[2]{\left[\begin{array}{r}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\ctwovec}[2]{\left[\begin{array}{c}#1 \\ #2 \end{array}\right]}\) \(\newcommand{\threevec}[3]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\cthreevec}[3]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \end{array}\right]}\) \(\newcommand{\fourvec}[4]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\cfourvec}[4]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \end{array}\right]}\) \(\newcommand{\fivevec}[5]{\left[\begin{array}{r}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\cfivevec}[5]{\left[\begin{array}{c}#1 \\ #2 \\ #3 \\ #4 \\ #5 \\ \end{array}\right]}\) \(\newcommand{\mattwo}[4]{\left[\begin{array}{rr}#1 \amp #2 \\ #3 \amp #4 \\ \end{array}\right]}\) \(\newcommand{\laspan}[1]{\text{Span}\{#1\}}\) \(\newcommand{\bcal}{\cal B}\) \(\newcommand{\ccal}{\cal C}\) \(\newcommand{\scal}{\cal S}\) \(\newcommand{\wcal}{\cal W}\) \(\newcommand{\ecal}{\cal E}\) \(\newcommand{\coords}[2]{\left\{#1\right\}_{#2}}\) \(\newcommand{\gray}[1]{\color{gray}{#1}}\) \(\newcommand{\lgray}[1]{\color{lightgray}{#1}}\) \(\newcommand{\rank}{\operatorname{rank}}\) \(\newcommand{\row}{\text{Row}}\) \(\newcommand{\col}{\text{Col}}\) \(\renewcommand{\row}{\text{Row}}\) \(\newcommand{\nul}{\text{Nul}}\) \(\newcommand{\var}{\text{Var}}\) \(\newcommand{\corr}{\text{corr}}\) \(\newcommand{\len}[1]{\left|#1\right|}\) \(\newcommand{\bbar}{\overline{\bvec}}\) \(\newcommand{\bhat}{\widehat{\bvec}}\) \(\newcommand{\bperp}{\bvec^\perp}\) \(\newcommand{\xhat}{\widehat{\xvec}}\) \(\newcommand{\vhat}{\widehat{\vvec}}\) \(\newcommand{\uhat}{\widehat{\uvec}}\) \(\newcommand{\what}{\widehat{\wvec}}\) \(\newcommand{\Sighat}{\widehat{\Sigma}}\) \(\newcommand{\lt}{<}\) \(\newcommand{\gt}{>}\) \(\newcommand{\amp}{&}\) \(\definecolor{fillinmathshade}{gray}{0.9}\)Abbreviations are commonly used to help simplify a drawing and conserve space. Although many fields share common abbreviation conventions, there are also field- or trades-specific conventions that you will see as you become more specialized. Here is a common list of abbreviations that are used on drawings. Each trade will have specific abbreviations from this list, and therefore a set of drawings will usually include an abbreviation key.
| AB | anchor bolt | HLS | holes | REF | reference |
| ABT | about | HSS | hollow structural steel | REQ'D | required |
| AUX | auxiliary | ID | inside diameter | REV | revision |
| BC | bolt circle | IN | inches | RF | raised face |
| BBE | bevel both ends | INT | internal | RH | right hand |
| BCD | bolt circle diameter | ISO | International Standards Organization | SCH | schedule |
| BOE | bevel one end | KP | kick plate | SI | International System of Units |
| BE | both ends | LH | left hand | SPECS | specifications |
| BL | baseline | LAT | lateral | SQ | square |
| BM | benchmark | LR | long radius | SM | seam |
| Btm | bottom | LG | long | SMLS | seamless |
| BP | base plate | MB | machine bolt | S/S | seam to seam |
| B/P | blueprint | MS | mild steel | SO | slip on |
| BLD | blind | MIN | minimum | SEC | section |
| C/C | center to center | MAX | maximum | STD | standard |
| COL | column | MAT'L | material | SS | stainless steel |
| CPLG | coupling | MISC | miscellaneous | SYM | symmetrical |
| CS | carbon steel | NC | national course | T | top |
| C/W | complete with | NF | national fine | T&B | top and bottom |
| CYL | cylinder | NO | number | T&C | threaded and coupled |
| DIA | diameter | NOM | nominal | THD | threaded |
| DIAG | diagonal | NTS | not to scale | TBE | threaded both ends |
| DIM | dimension | NPS | nominal pipe size | TOE | threaded one end |
| DWG | drawing | NPT | national pipe thread | THK | thick |
| EA | each | O/C | on center | TOL | tolerance |
| EL | elevation | OA | overall | TOC | top of concrete |
| EXT | external | OD | outside diameter | TOS | top of steel |
| F/F | face to face | OR | outside radius | TYP | typical |
| FF | flat face | OPP | opposite | U/N | unless noted |
| FLG | flange | PAT | pattern | VERT | vertical |
| FW | fillet weld | PBE | plain both ends | WD | working drawing |
| Ga | gauge | POE | plain one end | WP | working point |
| Galv | galvanized | PSI | pounds per square inch | WT | weight |
| HVY | heavy | PROJ | project | W/O | without |
| HH | hex head | RD | running dimension | XH | extra heavy |
| HR | hot rolled | R or RAD | radius | XS | extra strong |
| HT | heat treatment | RND | round |