Construction Abbreviations and Acronyms

1. OSL
   Overhead Slab Level
2. OSM
   Off Site Manufacturing
3. OSP
   Off Street Parking
4. OSR
   Open Side Ruled
5. OSSGA
   Ontario Stone Sand Znd Gravel Association
6. OSSGA
   Ontario Stone, Sand and Gravel Association
7. OSV
   Outside Stop Valve
8. OT
   Occupational Therapy
9. OT
   Overflow Threshold
10. OTAB
    Ontario Training Adjustment Board
11. OTAO
    Oklahoma Texas Area Office
12. OTL
    Outside The Lines
13. OTL
    Overhnad Transmission Lines
14. OTS
    Out of Service
15. OTUA
    Office Technique Pour L'utilisation De L'awier
16. OTW
    Out of This World
17. OTW
    'OFF THA WALL'
18. OTY
    Quantity
19. OUD
    Open Unlined Drain
20. OUT
    Outlet

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