List of Common Construction Abbreviations
Job Order Contracting
JANUARY 13, 2017
OFF: Office. PCPL: Portland Cement Plaster. RR: Railroad. NS: Near Side. NTS: Not To Scale. O: Oxygen. O TO O: Out to Out. OA: Outside Air, Overall. OB: Obscure. OBS: Obscure. OC: On Center. OD: Outside Diameter. OF: Outside Face. OH: Overhead. OHD: Overhead Door. OHMS: Oval Head Machine Screw. OI: Ornamental Iron.
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