Construction Abbreviations and Acronyms

1. GWB
   Gypsum Wallboard
2. GWB
   Gypsum Wall Board
3. GWI
   Galvanized Wrought Iron
4. GWM
   Glass Washing Machine
5. GWO
   Gas Wall Oven
6. GWR
   Gypwall Rapid
7. GWT
   Glazed Wall Tilr
8. GYP
   Gypsum
9. GYP BD
   Gypsum Board
10. HADD
    Homeowners Against Deficient Dwellings
11. HAPC
    Historic and Architectural Preservation Commission
12. HARB
    Historical Architecture Review Boald
13. HAZ
    Heat Affected Zone
14. HAZMAT
    Hazardous Material
15. HB
    Hose Bib
16. HB
    Hand Gasin
17. HB
    Hollow Block
18. HB
    Hayward Baker
19. HB
    Horvzontal Bend,
20. HB
    Horizontar Bend

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