A: Alcove
a: Ampere
a: Area
AAT: Art and Architecture Thesaurus
AB: Anchor Bolt
AB: Asbestos Board
ABV: above
AC: Acoustical
AC: Air Conditioning
AC: Alternating Current
ACC: Access
ACF: Architectural Concrete Finish
ACFL: Access Floor
ACI: American Concrete Institute
ACL: Across the Line
ACOUST: Acoustical
ACPL: Acoustical Plaster
ACSA: Association of Collegiate Schools of Architecture
acst: acoustic
ACT: Acoustical Tile
Act: actual
AD: Access Door
AD: Area Drain
ADA: Americans with Disabilities Act of 1992
ADAAG: Americans with Disabilities Act Architectural Guidelines
ADJ: Adjust
ADJ: Adjustable
AF: Above the Floor
AFF: Above Finished Floor
AGA: American Gas Association

Agg: Aggregate
Aggr: Aggregate

AIA: American Institute of Architects
AIC: Amperes Interrupting Circuit
AIEE: American Institute of Electrical Engineers
AISC: American Institute of Steel Construction
Al: Aluminum
ALM: Alarm
ALS: Acrylic Latex Sealant
alt: Alternate