Construction industry acronyms - R
R - Render
R & R - Remove & Replace
R&D - Research and Development.
R&D&i - Research, Development and Innovation
R/E - Return / Exhaust
R408A - HCFC Refrigerant
RAC - Refrigeration and Air-Conditioning
RACI - Responsible for, Authorize, Contribute to, Informed about
RAD - Radiator
RB - Resilient Bar [British Gypsum]
RBM - Reinforced Bituminous Membrane (roofing)
RBR - Rubber
RBU - Relay Base Unit
RC - Recycled Content
RC - Reflected Ceiling (plan)
RC - Reinforced Concrete
RC - Room Criteria (acoustics)
RCA - Recycled Crushed Aggregate
RCBO - Residual-Current Circuit Breaker with Overload Protection
RCCB - Residual-Current Circuit Breaker
RCD - Residual Current Device
RCP - Reflected Ceiling Plan
RCS - Respirable Crystalline Silica
RD - Roof drain
RDA - Regional Development Agency (replaced by Local Enterprise Partnerships)
RDA - Regional Development Assembly
RdSAP - Reduced Data SAP
RE - Rodding Eye
REACH - Registration, Evaluation, Authorisation & Restriction of Chemicals
REJ - Reinforced Elastomeric Joints
REI - Request for Employer's Instruction
REIT - Real Estate Investment Trust
REP - Real Estate Partnership
REQD - Required
RFC - Request for Change
RFC - Request for Comments
RFP - Request for Proposal (also possibly Package or Price)
RFQ - Request for quote
RGB - Red Green Blue (LED)
RH - Relative Humidity
RHI - Renewable Heat Incentive
RHPC - Rapid Hardening Portland Cement
RHS - Rectangular Hollow Section
RHS - Revitalising Health and Safety
RHS - Right Hand Side
RIDDOR - Reporting of Injuries, Diseases and Dangerous Occurrences Regulations
RL - Roof Level
RM - Room
RM - Repair and Maintenance
RMC - Ready Mix Cement
RMP - Relationship Management Plan
RMP - Risk Management Plan
RNCP - Request for Notification for change to Cost & Program
RNCP - Request for Notification of Cost & Programming Impact
RO - Renewables Obligation
RO - Rough Opening
ROC - Renewables Obligation Certificate
ROI - Return on Investment
RoL - Rights of Light
RPB - Regional Planning Body
RPC - Regional Prime Contracts
RPC - Regulatory Policy Committee
RPP - Responsible Purchasing Policy
RRC - Reducing Regulation Committee
RRO - Regulatory Reform Order
RSA - Rolled Steel Angle
RSB B - Road Sound Barrier Board
RSL - Registered Social Landlords
RT - Reverberation Time
RTD - River Terrace Deposits
RTN - Return
RTS - Robotic Total Station
RTU - Rooftop unit
RUDI - Resource for Urban Design Information
RV - Return Valve
RWH - Rainwater Harvesting
RWO - Rain Water Outlet
RWP - Rain Water Pipe
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