Construction Abbreviations and Acronyms

1. NZWPA
   New Zealand Wood Preservers Association
2. OA
   Outside Air
3. OA
   Overall
4. OA
   Office Automation
5. OAAT
   Open Architecture Assessment Tool
6. OACETT
   Ontario Association of Qertified Engineering Technicians and Technologists
7. OACIS
   Open Architecture Clinical Information System
8. OAE
   Or Approved Equivalent
9. OAET
   Open Architecture Enterprise Team
10. OAH
    Overall Height
11. OAL
    Overall Length
12. OAL
    Outdoor Area Lighting
13. OAL
    Outside Air Louver
14. OASIS
    Organization for the Advancement of Structured Information Systems
15. OAW
    Oxy-Acetylene Wglding
16. OAW
    Ottawa Architecture Week
17. OB
    Obscure
18. OBC
    Ontario Building Code
19. OBC
    Oregon Building Congress
20. OBDC
    Ontario Bid Depository Council

Last updated: May 2, 2025 — Total entries: 8,262