Numbering Protocols
General Arrangement Prefixes
- 3D
- 3D Perspective
- GR
- Grating Plan
- HD
- Holding Down Bolt Plan
- HR
- Hand Rail Plan
- MP
- Marking Plan
Assembly Prefixes
- A
- Brace
- AB
- Anchor-Bolt
- B
- Beam
- C
- Column
- D
- Dropper
- DH
- Door-Head
- E
- Stay
- F
- Frame
- FB
- Fly-Brace
- FP
- Fascia-Purlin
- G
- Girt
- H
- Hanger
- I
- n/a
- J
- Joist
- K
- Cleat
- L
- Lintel
- LA
- Ladder
- M
- Miscellaneous
(i.e. Belt-Drift / Pin / Etc.) - N
- Bridging
- O
- n/a
- P
- Purlin
- Q
- Hook-Bolt
- R
- Rafter
- S
- Stair-Stringer
- SF
- Site-Fitting
- SC
- Stub-Column
- T
- Truss
- TD
- Tie-Down-Rod
- TP
- Tilt-Panel
- TR
- Tressel
- U
- n/a
- V
- n/a
- W
- Grating
- WH
- Window-Head
- X
- Dummy
(These items are only used to assist in the modeling process and are not required to be fabricated) - Y
- Cast-In
- Z
- Trimmer
Part Prefixes
- f
- Fitting
- m
- Member
- ~
- (This is used to indicate that the item used is up to the fabricators discretion, however minimum steel sizes & grades must be as indicated to suit the engineering requirements. Also used when the part drawing is identical to the assembly drawing, thus omitting the part drawing)