310 Appendix 1
Power Operated Damper POD
Polyethylene POLY
Polypropylene (Plastic) PP
Pair PR
Prefabricate (d) PREFAB
Preliminary PRELIM
Preformed PRF
Property PROP
Pressure-reducing Valve PRV
Prestressed Concrete PSC
Pounds Per Square Foot PSF
Pounds Per Square Inch PSI
Painted PTD
Point PT
Pressure-Treated PT
Post-tensioned Concrete PTC
Paper Towel Dispenser PTD
Partition PTN
Paper Towel Receptor PTR
Pave (d), (ing) PV
Polyvinylchloride PVC
Pavement PVMT
Power PWR
Quadrant, Quadrangle QUAD
Quarry Tile QT
Quart QT
Quality QTY
Quantity QTY
Radius R, RAD
Right R
Riser R
Return Air RA
Riser R, RIS
Radiator RAD
Return Air Duct RAD
Rubber Base RB
Rubble Stone RBL
Rabbet, Rebate RBT
Rubber Tile RBT
Reinforced Concrete RC
Reflected Ceiling Plan RCP
Reinforced Concrete Pipe RCPRoad RD
Roof Drain RD
Round RD, RND
Ridge RDG
Rigid Insulation RDG INS
Redwood RDWD
Reinforce (d) RE
Reinforced Steel Bar REBAR
Recessed REC
Receptacle RECEPT, RECP
Reference REF
Refrigerator REF, REFR
Register REG
Reinforcement REINF
Remove REM
Requirement, Required REQ
Retain(ing) RET
Return RET
Revision REV
Roof RF
Roofing RFG
Roof Hatch RFH
Reflect (ed), (ive), (or) RFL
Request for Proposal RFP
Rough RGH
Right Hand RH
Rail (ing) RL
Room RM
Rough Opening RO
Right of Way ROW
Revolutions Per Minute RPM
Remaining Useful Life RUL
Rooftop Package Unit RTU
Relief Valve RV
Reverse (side) RVS
Rivet RVT
Rainwater Conductor RWC
South S
Switch S, SW
Safety SAF
Sanitary SAN
Suspended Acoustical Tile Ceiling SATC