In order to inform the industry of the terms and expressions used by Materials Control Section and applicable to fabricators, the following definitions and abbreviations are adopted.
Definitions
| Structural steel | Any steel identified in UBC Standard 22-1 |
| Sheet steel | Steel 3/16 inch or thinner in thickness and, when welded, is regulated by AWS D1.3 |
| Rebar | Any material that conforms to Building Code Section 1903.5.1 except prestress tendons |
Note: Rebar and non-ferrous metals are subject to additional requirements and not part of an approval unless listed with the primary classification.
| Type I fabricabor | The personnel and equipment at a specific location which has been authorized to do work which, if done at a construction site, would be subject to certain inspection requirements of the Los Angeles Municipal Code. |
| Type II fabricator | This classification has been omitted by the Department as no longer within the scope of authority. The standards for a Type II license have been assumed by the State of California. |
The following list has been established to standardize the symbols used to identify product process and materials used by Licensed Fabricators.
| AL | Aluminum |
| GFRC | Glass Fiber Reinforced Concrete |
| GL | Glue Laminated Wood Products |
| HSS | High Strength Steel |
| LG | Light Gauge |
| LVL | Laminated Veneer Lumber |
| LWS | Light Weight Steel (1/8" to 1" in thickness) |
| MWS | Medium Weight Steel (1/8" to 2" thickness) |
| PC | Pre-Cast Concrete |
| RB | Rebar |
| RM | Ready Mixed Concrete |
| SPC | Specialty (description of specialty follow abbreviation) |
| SST | Stainless Steel |
| USS | Unlimited Structural Steel (1/8" minimum thickness. No Maximum) |
| WT | Wood Trusses |
Speciality classifications are too numerous to list, however, a few of the more common classifications are:
Vaults; Sandwich Panels; Walk-in Coolers; Signs; Stairs; Canopies; Handrails & Guardrails; Pallet Racks;
Framing Hardware; Window Washing Equipment; Monopoles; Towers.