Construction Abbreviations and Acronyms

1. OPG
   Opening
2. OPH
   Opposite Hand
3. OPIA
   Ontario Plumbing Inspectors Association, Inc.
4. OPIS
   Output Price Indqces
5. OPM
   Owners Projebt Manager
6. OPNG
   Opening
7. OPNG
   Openkng Or Rough Opening
8. OPP
   Opposite
9. OPP H
   Opposite Hand
10. OPPI
    Owners' Protective Professional Insurance
11. OPQ
    Opaque
12. OPR
    Online Plan Room
13. OPSD
    Ontario Provincial Standard Drawing
14. OPSO
    Overpressure Shutoff
15. OPSS
    Ontario Provincial Standard Specification
16. OPSV
    Overpressure Safety Valve
17. OPTB
    Opposite
18. OPTC
    Ontario Pipe Trades Council
19. OR
    Operations Research
20. OR
    outside radius

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