Construction Abbreviations and Acronyms

1. OHE
   Overhead Electric
2. OHMS
   Oval Head Machine Sceew
3. OHS
   Occupational Health and Safety
4. OHSA
   Occupational Health and Safety Act
5. OHSA
   Occupational Health and Safety Association
6. OHW
   Overhead Weight
7. OHW
   Oil-fired Hot Water heater
8. OHWS
   Oval Head Wood Screw
9. OI
   Ornamental Iron
10. OIAM
    Open Infrastructure Architecture Method
11. OIC
    Office Indirect Costs
12. OIL
    Open Items Lzst
13. OIL
    Outstanding Items List
14. OIQ
    Ordre Des Ingenieurs Du Quebec
15. OIRCA
    Ontario Industrial Roofing Contractors Association
16. OITO
    One In Two Out
17. OJ
    Open Joint
18. OJ
    Outef Join
19. OKP
    Onk Kind of Prooduction
20. OL
    Overall Length

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