Last edited 23 Feb 2026

Construction industry acronyms - R

This article presents a list of construction industry acronyms beginning with 'R'.

For other letters click on the list below:

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

[edit] R

R - Render

R & R - Remove & Replace

R&D - Refurbishment and Demolition

R&D - Research and Development

R&D&i - Research, Development and Innovation

R&M - Repair and Maintenance.

R/E - Return / Exhaust

R22 - HCFC Refrigerant

R408A - HCFC Refrigerant

RA - Rapid Assessment

RA - Recycled Aggregate

RA - Route Availability

RAB - Regulated Asset Base

RAB - Resource Accounting and Budgeting

RAC - Refrigeration and Air-Conditioning

RACI - Responsible for, Authorize, Contribute to, Informed about

RAD - Radiator

RAD - Rapid Application Development

RADAR - Radio Detection and Ranging

RAF - Royal Air Force

RAG - Red Amber Green

RAM - Responsibility Assignment Matrix

RAM - Route Asset Manager

RAMP - Route Asset Management Plan

RAMS - Risk Assessment Method Statements

Rats - Remote Access Terminals

RB - Resilient Bar [British Gypsum]

RBD - River Basin District

RBCA - Registered Building Control Approvers

RBKC - Royal Borough of Kensington and Chelsea

RBM - Reinforced Bituminous Membrane (roofing)

RBMP - River Basin Management Plan

RBP - Relationship-based project procurement

RBR - Rubber

RBU - Relay Base Unit

RC - Recycled Content

RC - Reflected Ceiling (plan)

RC - Reinforced Concrete

RC - Roman Catholic

RC - Room Criteria (acoustics)

RCA - Recycled Crushed Aggregate (also Recycled Concrete Aggregate)

RCBO - Residual-Current Circuit Breaker with Overload Protection

RCC - Regional control centre

RCC - Reinforced Cement Concrete

RCCB - Residual-Current Circuit Breaker

RCD - Residual Current Device

RCHME - Royal Commission on the Historical Monuments of England

RCM - Reliability Centred Maintenance

RCP - Reflected Ceiling Plan

RCS - Respirable Crystalline Silica

RCS - River Corridor Survey

RD - Roof drain

RD&D - Research Development and Demonstration

RDA - Regional Development Agency

RDA - Regional Development Agency (replaced by Local Enterprise Partnerships)

RDA - Regional Development Assembly

RDEL - Resource Departmental Expenditure Limit

RDL - Reference Data Library

RDP - Registered Disabled Person

RDS - Room Data Sheet(s)

RDS - Responsible Developers Scheme

RdSAP - Reduced Data Standard Assessment Procedure

RE - Resource Efficiency

RE - Rodding Eye

REACH - Registration, Evaluation, Authorisation & Restriction of Chemicals

REB - Relocatable Equipment Building

REC - Renewable Energy Certificate

REC - River Ecosystem Class

RECC - Renewable Energy Consumer Code

ReFH - Revitalised Flood Hydrograph

ReFH2 - Revitalised Flood Hydrograph (version 2)

REGO - Renewable Energy Guarantees of Origin

REGS - Regulations

REI - Fire rating according In the European system of classification (‘R’ refers to structural stability, ‘E’ stands for ‘integrity’, ‘I’ for ‘insulation’)

REI - Request for Employer's Instruction

REIT - Real Estate Investment Trust

REJ - Reinforced Elastomeric Joints

REL - Recommended Exposure Limit

REM - Rapid Engineering Model

REMA - Review of Electricity Market Arrangements

REP - Real Estate Partnership

REPD - Renewable Energy Planning Database

REPPIR - Radiation Emergency Preparedness And Public Information Regulations

REQD - Required

REST - Representational State Transfer

RESTATS - Department Of Energy And Climate Change Renewable Energy Statistics

ReU - Reuse

REUL - Retained EU Law

RF - Radio Frequency

RFB - Request for Bid

RFC - Request for Change

RFC - Request for Comments

RFCC - Regional Flood and Coastal Committee

RFDD - Reasons For Designation Decision

RFI - Radio Frequency Interference

RFI - Request for Information

RFID - Radio Frequency Identification

RFM - Run to Fail Maintenance

RFP - Request for Proposal (also possibly Package or Price)

RFQ - Request for quote

RFRA - Regional Flood Risk Appraisal

RFT - Right First Time

RFx - Request For X

RGB - Red Green Blue (LED)

RGGO - Renewable Gas Guarantees of Origin

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

RHS - River Habitat Survey

RI - Railway Inspectorate

RIA - Regulatory Impact Assessment

RIAS - Royal Incorporation of Architects In Scotland

RIBA - Royal Institute of British Architects

RICS - Royal Institute of Chartered Surveyors

RICT - River Invertebrate Classification Tool

RIDDOR - Reporting of Injuries, Diseases and Dangerous Occurrences Regulations

RIGS - Regionally Important Geological And Geomorphological Site

RIIO - Revenue Incentives Innovation Outputs

RIM - Reservoir Inundation Mapping

RIMAG - Risley Moss Action Group

RIP - Reduced Ignition Propensity

RIR - The Railways (Interoperability) Regulations 2011 (As Amended)

RISKAT - Risk Assessment Tool

RIT - Risk Identification Tool

RLA - Residential Landlords Association

RL - Roof Level

RLD - Regional Landscape Designation

RM - Repair and Maintenance

RM - Requirements management

RM - Room

RMA - Risk management authority

RMC - Ready Mix Cement

RMI - Repair, Maintenance and Improvement

RMM - Rail Method of Measurement

RMP - Relationship Management Plan

RMP - Risk Management Plan

RMRS - Remote Meter Reading System

RNA - Remediation by Natural Attenuation

RNA - Remote Network Access

RNA – Resource Natural Area

RNA - Retrospective Network Analysis

RNA - Risk Not Acceptable

RNCP - Request for Notification of Cost & Programming

RNG - Renewable Natural Gas

RO - Regional office

RO - Renewable Obligation

RO - Rough Opening

ROC - Renewables Obligation Certificate

RoCoF - Rate of Change of Frequency

ROF - Royal Ordnance Factory

ROGS - The Railways And Other Guided Transport Systems (Safety) Regulations

ROI - Return on Investment

RoL - Rights of Light

Rospa - Royal Society For The Prevention of Accidents

ROT - Renovate, operate, transfer

RP - Rail Package

RP - Relevant Person (Scotland)

RPA - Real Property Administrator

RPA - Risk potential assessment

RPB - Regional Planning Body

RPC - Reduced Pollution Certificate

RPC - Regional Prime Contracts

RPC - Regulatory Policy Committee

RPD - Resources and Planning Directorate

RPDT - Residential Property Developer Tax

RPE - Respiratory Protective Equipment

RPEL - Recognition of Prior Experience and Learning

RPG - Registered Park And Garden

RPL - Recognised Prior Learning.

RPO - Redundancy Payments Office

RPO - Regulatory Reform (Fire Safety) Order 2005

RPP - Responsible Purchasing Policy

RPZ - Reduced pressure zone

RPZ - Root Protection Zone

RRB - Route Refinement Baseline

RRC - Reducing Regulation Committee

RRO - Regulatory Reform Order

RRQ - Register of Regulated Qualifications

RS - Risk Score

RSA - Rolled Steel Angle

RSB B - Road Sound Barrier Board

RSCS - Responsible Sourcing Certification Scheme

RSD - Rolling Stock Depot

RSES - Register of Security Engineers and Specialists

RSHI - Rock Slope Hazard Index

RSI - Repetitive Strain Injury

RSIA - Road Safety Impact Assessment

RSJ - Rolled Steel Joist

RSL - Registered Social Landlords

Rsls - Registered Social Landlords

RSMD - Rolling Stock Maintenance Depot

RSPB - Royal Society For The Protection Of Birds

RSS - Regional Spatial Strategy

RSSB - Rail Safety And Standards Board

RSSB - Rail Safety Standards Board

RSSB - Railway Safety and Standards Board

RT - Radiographic Testing

RT - Reverberation Time

RTA - Ready to assemble

RTD - River Terrace Deposits

RTFO - Renewable Transport Fuel Obligation

RTK - Real time kinematic

RTMC - Regional technology maintenance contractor

RTN - Return

RTO - Research & Technology Organisation

RTPI - Royal Town Planning Institute

RTS - Robotic Total Station

RTU - Rooftop Unit

RU - Railway Undertakings

RUDI - Resource for Urban Design Information

RUS - Route Utilisation Strategies

RUS - Route Utilisation Strategy

RV - Rateable Value

RV - Return Valve

RVAA - Residential Visual Amenity Assessment

R-value - thermal Resistance value of a material

RVIS - Visible reflectance

RVM - Reverse Vending Machine

RVTS - Roadside Vegetated Treatment Sites

RWA - Regional Water Authority

RWC - Responsible Welding Co-ordinator

RWH - Rainwater Harvesting

RWO - Rain Water Outlet

RWP - Rain Water Pipe

RWS - Renovation Wave Strategy

Designing Buildings Anywhere

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