Steel Detailing Abbreviations (Starting with "A")

Here is the list of most common abbreviations Starting with Letter “A” used by a steel detailer in structural steel detailing. The list of abbreviations used in a set of structural drawings varies from office to office. Be sure to check the front section of the drawing set for the abbreviations used within.

SI:NO	ABBREVIATION	DEFENITION
1	A/E	ARCHITECT/ENGINEER
2	AB	ANCHOR BOLT
3	ABAN	ABANDON
4	ABBRV	ABBREVIATION
5	AC	ASPHALTIC CONCRETE
6	ACI	AMERICAN CONCRETE INSTITUTE
7	ACP	ASPHALTIC CONCRETE PAVING
8	ACR	ACROSS
9	ACST	ACOUSTIC
10	AD	AREA DRAIN
11	ADA	AMERICANS WITH DISABILITIES ACT
12	ADDL	ADDITIONAL
13	ADDM	ADDENDUM
14	ADJ	ADJACENT/ADJOINING
15	ADMIN	ADMINISTRATION
16	AFF	ABOVE FINISHED FLOOR
17	AFG	ABOVE FINISHED GRADE
18	AFS	ABOVE FINISHED SLAB
19	AGGR	AGGREGATE
20	AHR	ANCHOR
21	AIA	AMERICAN INSTITUTE OF ARCHITECTS
22	AISC	AMERICAN INSTITUTE OF STEEL CONSTRUCTION
23	AISI	AMERICAN IRON AND STEEL INSTITUTE
24	AITC	AMERICAN INSTITUTE OF TIMBER CONSTRUCTION
25	ALNMT	ALIGNMENT
26	ALT	ALTERNATE, ALTERNATIVE
27	ALUM	ALUMINUM
28	AMT	AMOUNT
29	ANSI	AMERICAN NATIONAL STANDARDS INSTITUTE
30	APA	AMERICAN PLYWOOD ASSOCIATION
31	APPD	APPROVED
32	APPROX	APPROXIMATE
33	APPX	APPENDIX
34	AR	AS REQUIRED
35	ARCH	ARCHITECT
36	ASCE	AMERICAN SOCIETY OF CIVIL ENGINEERS
37	ASPH	ASPHALT
38	ASI	ARCHITECT’S SUPPLEMENTAL INSTRUCTIONS
39	ASSN	ASSOCIATION
40	ASTM	AMERICAN SOCIETY FOR TESTING AND MATERIALS
41	ATCH	ATTACHMENT
42	ATTN	ATTENTION
43	AWS	AMERICAN WELDING SOCIETY
44	AZ	AZIMUTH