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R-test rabbet plane Rabitz type steel-wire plaster fabric race racetrack building raceway raceway for electric conduit and telephone lines rack rack bar rack building hoist rack rolling rack-and-lever jack rack-and-pinion jack racking course racking position radar detection radial air jet radial blade fan radial brick radial cone bottom radial drainage radial fan radial force radial gate radial load radial percolation test radial plan structure radial plotter radial road radial sett paving radial shearing stress radial stress radial well radial-flow settlement tank radial-flow settling tank radial-line plotting radiant convector gas heater radiant convector heater radiant cooling radiant gas heater radiant heat radiant heat exchange radiant heat transfer radiant heater radiant heating radiant panel radiant strip radiant surface radiant temperature radiating capacity radiating tower radiation radiation effects radiation heat transfer coefficient radiation pyrometer radiation restricted area radiation safety radiation shielding radiation shielding concrete radiation temperature radiator radiator grouping radiator rating radiator valve radiator vent cock radio distance measurement radio mast radio outfit radio tower radio village radioactive dust radioactive material radioactive testing radioactive-tracer log radiotracer radius radius brick radius former radius indicator radius of curvature radius of diffusion radius of gyration radius to thickness ratio radome raft raft foundation raft stiffening rafter rafter spar rafter-supported eaves rafting canal rag rag bolt rail rail bender rail car rail centers rail chair rail clamp rail clip rail crane rail creep rail creepage rail depot rail fork rail gang rail grinder rail grinding train rail head rail heater rail joint rail ladder rail lifter rail lubricator rail mounted track laying system rail renewal rail skip rail steel reinforcement rail threader rail tie rail tongs rail track rail web rail-dominated district rail-fastening clip rail-highway crossing rail-mounted jib crane rail-mounted shunting crane rail-mounted tower crane rail-welding machine railbound frog railhead railing railing post railings railroad railroad bed railroad bridge railroad concrete tie railroad crossing railroad flatcar railroad precinct railroad tunnel railway railway ballast railway bed railway bed crossing railway bridge railway buildings railway clearance diagram railway level crossing railway load railway pile driver railway platform railway station railway switch railway track railway track spanner railway traffic railway tunnel rain rain cap rain gauge rain leader rain load rain penetration rain-snow load combination rainbow roof rained out rainfall discharge rainfall hydrograph rainscreen rainwater chamber rainwater cistern rainwater head rainwater hopper rainwater inlet rainwater installation rainwater pipe rainwater shoe rainwear raise raised and fielded panel raised arch raised building raised floor raised floor system raised flooring raised grid flooring raised kerb raised shaft raised spot raised table raised-center polygon raised-perforated flooring raiser raising raising device raising hammer rake rake classifier raked joint raker raker pile raking bond raking cornice raking mechanism raking pile ram ram lift rammed concrete rammed-earth construction rammer ramming ramp rampant arch ramped approach ramshackle building ramshackle state random random ashlar work random cracks random error random line random packing random pattern random stone random-load testing randomly selected specimen range range boiler range finder range hood range of colors range of linearity range of products range of sizes range of speeds range of stress range pole range rod ranging ranging "from oneself" ranging "towards oneself" Rankine's theory rapid rapid construction rapid filter rapid filtration rapid in-situ concrete construction rapid progress of work rapid soil classification rapid test method rapid transit tunnel rapid transport system rapid-curing asphalt rapid-hardening cement rapid-setting cement rapid-strength development rapidly developing technology rappelling rarely occurring load Raschig rings rasp rat rat-tail burner ratched wheel ratchet ratchet drill rate rate action control rate of air circulation rate of application rate of change of stresses rate of combustion rate of concrete placement rate of consolidation rate of construction rate of damping rate of decomposition rate of development rate of dilution rate of elastic recovery rate of feed rate of filter clogging rate of foundation settlement rate of growth rate of hardening rate of heat liberation rate of heat transfer rate of hydration rate of infiltration rate of load application rate of loading rate of motion rate of pour rate of response rate of rise and fall rate of runoff rate of sediment delivery rate of set rate of setting rate of spread rate of strain rate of strength development rate of swelling rate of temperature rise rate of travel rate of water loss rate of water supply rate of wear rate of work rate of work done by one man rate schedule rate-of-hardening parameters rate-process theory rated rated capacity rated capacity of jack rated consumption rated heat output rated load rated number of revolution rated pumping capacity rated speed rating rating curve rating flume rating of lifting gear rating plate ratio ratio method of balancing ratio of slope ration rational design procedures rational pile formula ravelling raw linseed oil raw materials raw mix raw sewage raw sienna raw sludge raw umbra raw waste raw water ray Raymond cylinder pile Raymond pile Raymond regulated injection pile Raymond standard taper pile Raymond standard test Raymond step-taper pile re-analysis re-design re-entrant corner re-erection re-lay re-laying reach reaching reaching of limit state reaction reaction couple reaction force reaction of cement hydration reaction of support reaction products reaction tank reaction time reaction-influence line reactions at the supports reactions of beam reactivate reactivate hydration in returned concrete reactivation reactivation of activated carbon reactivation tank reactive aggregate reactive force reactive silica material reactivity reactor reactor composting reading reading hall reading room reading space ready ready access ready for use at any one time ready made form ready mix ready mix company ready mix supplier ready mix truck ready mixed concrete ready mixed concrete plant ready-made ready-mix paint ready-mixed joint compound ready-mixed mortar ready-mixed paint ready-primed ready-to-use reafforestation zone real conditions of end restraint real estate tax real load real property real size realcrete realcrete specimen realignment reamer rear apron rear arch rear discharge rear end collision rear facade rear outriggers rear tension buggy rear vault rear view rear-earth metals reason rebar rebar cage rebar clip rebar cutter rebar flange coupler rebar location rebar mat rebar placement rebar safety cap rebar spacing rebar tie encased in concrete rebated joint rebound rebound curve rebound deflection rebound hammer method rebound number R rebound of pile rebuilding recalculation receding colors receipt receipt of materials receiver receiver hopper receiving receiving area receiving of the materials receiving site receiving stream receiving water receiving yard receptacle reception center reception room reception test receptor receptor hood recess recessed lighting fitting recessed-head screw recession curve recharge recharge of aquifer recharge pit recharge well reciprocal action reciprocal deflection relationship reciprocal leveling reciprocal movement reciprocal observation reciprocal theorem reciprocal vertical-angle observation reciprocal viscosity reciprocating compressor reciprocating pump reciprocity theorem recirculated air recirculated water recirculating air fan recirculating water use recirculation recirculation air recirculation duct recirculation ratio recirculation-type evaporator reclaim reclaimed heat reclamation reclamation station recoiling recommendations recommended load recommended practice recommended procedure for testing recompression recompression curve reconditioning reconditioning of monuments reconnaissance reconnaissance investigations reconnaissance survey reconsideration reconsideration of the standard reconstitute reconstruction recool system recooling recooling water record record drawing record flood record space recorded settlement recorder recording device recording room recording space recording thermometer recoverable deformation recovery recovery factor recovery ratio recovery time recreation and entertainment park recreation ground recreation room recreation space recreation space ratio recreational area recreational center recreational court recreational ground recreational zone recruitment recruitment of the workforce rectangular aerated grit-removal tank rectangular axes rectangular beam rectangular bent rectangular coordinates rectangular direction rectangular duct rectangular footing rectangular hollow core r.c. pile rectangular sedimentation tank rectification column rectifier rectifying camera rectifying printer rectilinear building rectilinear structure rectilinear translation recuperation recuperative heat exchange recuperator recurrence recurrence formula recurrence interval recycle recycle of sludge recycle sludge recycled concrete recycled from left-over concrete aggregate recycled material recycling recycling of returned concrete recycling of sewage recycling of wastes recycling system recycling water system red red chrome red iron oxide red label goods red lead red lead paint red lead-based mastic red litmus paper red metal red ocher red pigments reddish hue redecking redeposited sample redeveloped site redevelopment redevelopment area redevelopment scheme redistribution redistribution of forces redistribution of moments redosing redosing of concrete redox potential redriving reduced equation reduced level reduced loading reduced main stress reduced mass reduced plastic moment reduced strength reducer reducing coupling reducing cross reducing elbow reducing fitting reducing piece reducing tee reducing valve reduction reduction coefficient reduction factor for piles in groups reduction in area reduction in rigidity reduction in weight reduction of bleeding reduction of forces redundance redundancy redundancy reduction redundant redundant bridge system redundant member redundant structure redundant support redundant to the second degree redwood reed reed clip reed roof reed-fiber mat reeding reel reeving refectory reference axis reference conditions reference data reference environment reference grid reference level surface reference line reference peg reference point reference point method reference test refilling refined tar refit refitting reflectance reflected-light luminaire reflecting concrete curbing reflecting road stud reflecting square reflection coefficient reflection cracks reflection factor reflection profile reflection shooting reflection survey reflective crack control reflective cracking reflective glass reflective insulant reflective insulation reflectivity reflux valve reformatory refraction profiling refraction shooting refraction survey refractories refractory brick refractory cement refractory concrete refractory facing refractory insulating concrete refractory shotcrete refreshment room refrigerant refrigerant accumulator refrigerant evaporator refrigerant rectifier refrigerated container

refrigerating refrigerating capacity refrigerating compressor refrigerating installation refrigerating load refrigerating machine refrigerating plant refrigerating system refrigerating unit refrigeration refrigeration circuit refrigeration cycle refrigeration duty refrigeration equipment refrigeration load refrigeration requirement refrigeration system refrigerator refuge refuge island refuge niche refurbishment refurbishment contract refurbishment plan refurbishment project refurbishment work refusal refuse refuse chute refuse collecting chamber refuse collection refuse collector refuse composting refuse derived fuel refuse disposal refuse disposal works refuse grinder refuse incineration refuse incineration plant refuse incineration works refuse incinerator refuse processing plant refuse transfer station refuse-collecting truck regain regaining regaining of workability regenerated water regenerative air cycle system regenerative air filter regenerative air heater regenerative cooling regenerative heat exchanger regenerative heating regenerator regime regimen region region of imperfections region of stress concentration regional planning regional settlement system register register glass reglet regrouping regular concrete regular concrete sand regular gypsum wallboard regular-coursed rubble regularity regularity of bore regulated flow regulated stream regulated traffic zone regulating regulating capacity regulating course regulating damper regulating storage regulating structure regulating tank regulating valve regulation regulation carrying capacity regulation of streams regulation works regulator regulator storage regur rehabilitation rehabilitation project reheat reheat coil reheat induction unit reheat system reheat unit reheater reinforced bar slip joint reinforced brickwork reinforced bridge reinforced concrete reinforced concrete beam reinforced concrete construction reinforced concrete element reinforced concrete products reinforced concrete raft reinforced concrete slab culvert reinforced concrete structural framing reinforced concrete structure reinforced concrete tower frames reinforced concrete work reinforced concrete-frame construction reinforced earth reinforced embankment reinforced floor beam reinforced glass reinforced grinding wheel reinforced masonry reinforced masonry structure reinforced plaster reinforced plastic reinforced polymer concrete reinforced soil reinforced soil structure reinforced standing seam joint reinforced timber structure reinforcement reinforcement bar reinforcement bending yard reinforcement cage reinforcement corrosion reinforcement cross section reinforcement cutting and bending plant reinforcement cutting shear reinforcement detector reinforcement displacement reinforcement misplaced in concrete reinforcement percentage reinforcement placement reinforcement ratio reinforcement shop reinforcement splicing reinforcement steel reinforcement steel rod reinforcement stress reinforcing reinforcing bar reinforcing bar force reinforcing bar pull-out strength reinforcing cage reinforcing existing structures reinforcing fabric installation reinforcing mesh reinforcing ring reinforcing rod spacer reinforcing steel reinforcing steel detailing reinforcing steel placing standards reinforcing steel rod reinforcing steel splice sleeve reinforcing swage reinstate reinstatement reinstatement of structure reinstating reinstating the surface of motorway reject rejected plan rejection rejection of noncomplying concrete rejoin rejoint rejointing rejuvenation rejuvenation of old concrete relation relationship relative building trades relative compaction relative density relative elongation relative error relative humidity relative pressure relative shear relative stability relative stiffness relative value relaxation relaxation method relay relay protection relay station release release material release of brake release of joints release of spring release of steam release valve released joint reliability reliability coefficient reliability evaluation reliability index reliability test reliable performance relief relief air relief damper relief displacement relief drain relief feature relief model relief road relief sewer relief stretching relief valve relief vent relief well relieve relieving relieving arch religious architecture reline reload reloading curve relocatable building relocatable partition relocate relocation relocation of buildings relocation of equipment reluctant remainder remake remedial measures remedies against bleeding remedy remedy of fault remixing remodeling remoldability remolded sample remolded soil remote apron remote bulb thermostat remote condenser remote control remote sensing remote switch remote visual inspection remote-indicating thermometer remote-reading thermometer removable removal removal from mould removal of faults removal of forces removal of graffiti from concrete removal of redundant members removal of water remover removing removing of stumps Renaissance architecture rendering rendering coat Rendhex steel pile renewable filter renewal renewal of the existing building renovation rentable space rental charge rental contract rental payment repair repair activity repair by epoxy injection repair center repair contractor repair gate repair items repair materials repair mechanic repair of deteriorated concrete repair of distressed structures repair outfit repair parts repair program repair quay repair room repair techniques repair truck repair use repairability repeatability repeated application of forces repeated cycles of freezing and thawing repeated load repeated load test repeated stress repeated stress cycles repeated-wedge ice repelled jump repellence repellency repellent repellent looking building repelling force repelling groin intake repetitive loading replaceable media filter replacement replacement air replacement factor replacement filter replacement of structural member replacing replacing floors replotting report reporting reporting for work reposting representation representative representative curve representative fraction representative sample reproducibility reproducible methods reproducible test results required amount of water required design load requirement requirement of continuity requirements of structural safety rerounding reseal trap resealing research research data research effort research laboratory research of practical nature research of purely theoretical nature research program research station research work research worker resection reservation reserve reserve aerodrome reserved area reservoir reservoir basin reservoir capacity reservoir routing reservoir storage reset reset adjustment reset control reset controller resetting resetting of forms resettling reshaping reshore reshoring residence residence building residence time resident resident engineer resident on the project residential air-conditioning residential allotment residential area residential building residential community residential construction residential development residential district residential finishing residential grouping residential parish residential road residential school residential sewage residential unit residential zone residual application residual asphalt residual chlorine residual cohesion residual deflection residual deformation residual elasticity residual error residual load residual oil residual soil residual strain residual stress residue residue on evaporation resilience resilient emulsion resilient flooring resilient hanger resilient joint resilient materials resilient support resiliently supported base resin resin concrete resin emulsion paint resin modified cement concrete resin mortar resin solution curing membrane resin-bonded chipboard resin-treated wood resinous waterproof adhesive resinous wood resistance resistance coefficient resistance force resistance heating resistance strain gauge resistance thermometer resistance to air passage resistance to chemical attack resistance to freezing and thawing resistance to heat absorption resistance to heat transfer resistance to plastic flow resistance to rotation resistance to rupture resistance to vapor passage resistance to water attack resistance to wear resistant resistant force resistant to chaffing resisting moment resistivity resistivity log resistivity method resistivity survey resistor resolution resolution of forces resolution of vector resonance resonance characteristic resonance frequency resonance pile driving resonant pile driver resonant-column test resonant-frequency method resort resources respiration air respirator response response factors response speed response time response to dynamic loads responsible representative of the contractor rest rest area rest bend rest home rest period rest pier rest room restarting cement hydration restaurant resteel resting space restoration restoration costs restoration materials restoration techniques restoring restoring force restoring moment due to dead loads restoring of topsoil restrain restrained restrained bar restrained beam restrained slab restrained support restraining force restraint restraint against rotation restraint conditions restraint force restraint of concrete restraint of displacement restrict area restricted area restricted narrow pours restricted stopping sight distance restriction restriction of deformations restrictor restrictor valve restructuring result resultant resultant air temperature resultant force resultant of forces resurfacing retail trading space retainer retaining retaining dam retaining dike retaining prism retaining reservoir retaining spring retaining wall retaining wing retaining-type abutment retard retardant retardation retarder retarder yard retarding admix retarding admixture retarding reservoir retempering retempering of concrete retention retention basin retention pond retention reservoir retention time retentivity reticulated masonry reticulated work retopping retractable roof retractile draw bridge retraction retraction of outriggers retreat retrofit retrofit project retrofitting techniques retrogressive-thaw flow slide return return air return air duct return air fan return air inlet return air system return bend return flow return flow compressor return grille return header return line return manifold return offset return pipeline return riser return sludge return sludge dosage return spring return system return tapping return temperature return temperature limiter return water returned concrete reusable reusable concrete form reuse reused sewage water reuses reveal revenue account reverberant field method reverberation reverberation chamber reverberation time reverse reverse azimuth reverse bend test reverse bevel reverse circulating drilling equipment reverse circulation drilling reverse curve reverse curved viaduct reverse cycle reverse cycle heating reverse direction reverse flow reverse loop curve reverse osmosis reverse return piping reverse return system reverse return upfeed system reverse-acting diaphragm valve reversed filter reversed stress reversible cycle reversible deformation reversible fan reversible lane reversible roadway reversible vibration plate reversible window reversing relay reversing valve revetment revetment wall revibration review review of the work to be done revolving arch ladder revolving crane revolving dome revolving door revolving drier revolving screen revolving shovel revolving superstructure rewater Reymond penetrometer rheology rheonomous constraints rheopexy rhone rib rib arch rib ratio rib-reinforced expanded steel mesh ribband strip ribbed ceiling ribbed dome ribbed finish ribbed floor ribbed head bolt ribbed panel ribbed pipe ribbed plate ribbed slab above basement ribbed surface ribbed vault ribbed wall ribbing ribbon ribbon building ribbon clay ribbon development ribbon loading ribbon strip ribbon window rich bottom layer rich clay rich concrete rich lime rich mixture Richter scale ridability rideability ridge ridge beam ridge board ridge course ridge plate ridge purlin ridged polygon riding riding concrete bucket riffle box rig rig hall rigger rigging rigging arrangement rigging diagram right

right and left nut right angle parking right lane right-angle intersection right-hand lane right-hand splay junction right-handed nut right-of-way space right-turn lane right-turning lane rigid arch rigid body rigid connection rigid connector rigid deck rigid disk rigid dolphin rigid envelop rigid envelope rigid foam rigid footing rigid frame rigid frame bridge rigid frame construction rigid frame pier rigid insulation rigid joint rigid pavement rigid pavement aerodrome rigid plate rigid polyurethane foam rigid portal frame rigid profile rigid sheet rigid structure rigid tunnel lining rigid urethane foam rigid-body dynamics rigid-braced derrick crane rigid-plastic structure rigidity rigidly restrained rim bearing rim lock rim-bearing swing bridge ring ring auger ring beam ring dam ring foundation ring gate ring girder ring groove ring kiln ring main ring nut ring road ring seal joint ring shake ring shear apparatus ring spanner ring valve ring-balance manometer ringed column Ringelmann blackness scale rink rinse type air humidifier rinse water rinsing rinsing air ripper ripping ripping bar ripping timber riprap rise rise in concrete temperature rise of truss risen pile riser riser duct riser form riser pipe rising arch rising butts rising diagonal rising heating system rising hinge rising main rising pier rising stem valve rising wall risk river river basin river bed river bed morphology river bridge river canalization river capture river closure river control river crossing river development river dike river diversion river engineering river flow river gravel river icing river intake river outlet river power plant river training river-basin analysis river-run power plant riverside building rivet rivet head rivet hole rivet set rivet snap riveted bridge riveted connection riveter Ro test road road accident road alignment road bed road bitumen road breaker road builders road construction road construction site road continuity road excavation road fork road forms road furniture road grooving machine road gulley road heater road hump road kerb road logger road marking road materials road metal road network road oil road on snow road operation cost road planning road profile road repair equipment road roller road roughness meter road service quality road settlement point road system road tar road template road traffic road transport works road travel road-building machinery road-cum-rail bridge road-making plant road-vehicle depot roadbase roadbed roadbed note roadmixer roadside ditch roadside hedgerows roadstone aggregate plant roadway roadway delineation roadway drainage roadway gate roadway sign rock rock anchor rock asphalt rock bed rock bed storage rock bit drilling rock blanket rock bolting rock bolts rock bolts convergence test rock bottom rock breaker rock burst rock drilling characteristics rock excavation rock faced concrete panel rock flour rock job rock joint strength rock lifting rock loader rock mass rock material rock mattress rock mechanic rock mechanics rock mechanics survey rock pile rock pocket rock quality designation rock quality designation classification rock slide rock structure rating rock toe rock tunnel rock tunneling rock wool rock-face stone rock-faced brick rock-fill foundation rock-fill revetment rock-filled crib rock-forming minerals rock-garden rocker rocker bearing rocker-dump hand cart rockery rockfill rockfill blanket rockfill dam rockfill drain rocking column rockscape Rockwell hardness Rockwell hardness test Rockwell hardness tester Rockwell method of hardness testing Rockwell superficial hardness test rod rod bender rod connection rod element rod extensometer rod float rod fork rod hole rod level rod reinforcement rod steel rod tiller rod-type extensometer rodding rodding eye rodent control rodman roll roll breaker roll crusher roll filter roll molding roll stock roll-and-fillet molding roll-formed angle rollcrete rolled asphalt rolled beam with cover plates rolled channel rolled earth rolled I beam rolled section rolled steel rolled steel beam rolled steel joist rolled stock rolled strip rolled wire rolled-beam bridge roller roller bearing roller bit roller blinds roller compacted concrete roller conveyor roller cover roller curb roller dam roller finisher roller gate roller grizzly roller latch roller mill roller passage roller screeding roller shutter roller skating rink roller-cum rocker expansion bearing roller-mounted leaf gate rollforming machine rolling rolling crusher rolling friction rolling gate rolling lift span bridge rolling requirement rolling shutter rolling shutter frame rolling stock rolling width rolling-in rolling-lift bascule bridge rolling-lift bridge rollock rollock cavity wall rollway rolok Roman arch Roman cement Roman Doric order Roman tile Romanesque architecture roof roof batten roof beam roof car park roof cement roof cladding roof coating roof covering roof cowl roof deck roof drain roof drainage roof extract unit roof fan roof framing roof garden roof gate roof hatch roof insulation roof jack roof light roof loading roof loads roof mastic roof outlet roof paint roof parking roof resistant to the fire exposure roof ridge roof run roof screen roof sheathing roof slab roof space roof spray cooling roof stanchion roof steel roof structure roof tile roof tiling work roof timbers roof top plant roof top unit roof truss roof truss panel point roof ventilator roof-top air-conditioner roof-truss space roofed swimming pool roofer roofing roofing application roofing bond roofing bracket roofing felt roofing felt application roofing lath roofing material roofing nail roofing strip roofing system roofing tile rooflight rooftop solar collector room room acoustics room air room air conditions room air cooler room air humidifier room air-conditioner room area room constant room sealed appliance room spray-type humidifier room thermostat room unit room-heigh window root root extractor root pile root rake rootdozer rope rope grip rope guy rope reeving rope roof rope sag rope tackle rope-suspended roof roped hydraulic elevator ropeway roping rops rosace rose rose head rose molding rose window rosette Rosie O'Moore rosin rosin oil rostral column rot rot-resisting timber rotary biological contactor rotary bored cast-in-place pile rotary breaker rotary compressor rotary core drilling rotary crane rotary crusher rotary distributor rotary ditcher rotary drilling rotary excavator rotary filter rotary float rotary furnace rotary heat exchanger rotary interchange rotary intersection rotary island rotary junction rotary kiln rotary meter rotary mixing device rotary motion of the crane rotary movement rotary oil burner rotary percussion drilling rotary power tools rotary powered tools rotary probe drilling rotary pump rotary screen rotary scrubber rotary shears rotary sliding vane compressor rotary snow plough rotary stage rotary vane rotary viscous air filter rotary-drum lorry rotary-percussion power tools rotary-percussion powered tools rotating biological contactor rotating disk filter rotating drum tie pick up device rotating drum water strainer rotating vane anemometer rotation rotation capacity rotation of axes rotation of truss joint rotation of unity rotation through the same angle rotational rotational freedom rotational inertia coefficient rotational shell rotational slide rotational symmetry Rotinoff pile rotunda rough buck rough cast rough coating rough finish rough floor rough grinding rough lumber rough terrain rough timber rough-axed brick rough-cut joint rough-hewn timber roughening roughing tank roughneck roughness roughness of channel roughometer round round arch round bar round column steel form round duct round horseshoe arch round house round mouth shovel round of holes round track punch round-head spanner round-hole screen round-log construction roundabout rounded aggregate rounded particle roundel rounding rounding machine route route survey router router plane routine check routine fire procedures routine inspection routing row row of columns row of wells Rowe consolidation cell rowlock rowlock cavity wall rubbed finish rubber rubber balloon densimeter rubber bearing rubber cement rubber cloth rubber cushion rubber floor covering rubber gasket rubber mallet rubber modified bitumen rubber mount rubber pad rubber pestle rubber screen cloth rubber sheet rubber-coated rubber-coated textile rubber-covered roller rubber-emulsion paint rubber-solid footwear rubber-tired custor rubber-tired roller rubber-tired scraper rubber-tired tractor rubber-to-metal adhesion rubber-tyred carrier rubbing rubbing brick rubbish rubbish chute rubbish grinder rubbish removal rubble rubble ashlar rubble ashlar masonry work rubble backing rubble concrete rubble cushion rubble drain rubble masonry rubble stone rubble stone footing rubble vault rubble wall rubble-mound breakwater rubblework Ruberoid roofing Ruberoid roofing felt rugged terrain rugosity rule rule of thumb ruler rules for design ruling gradient rumble strip run run line run line paint roller run-around coil run-around cycle run-around heat recovery coils run-around system run-out rungs runner runner chamber runner line running running a painting line running block running bond running control running cost running end running mold running molds running repair running sand running speed running stratum running time running track running trap running tunnel running wheel running-off running-off operation running-up time runoff runoff coefficient runoff depletion runoff detention runway runway arresting gear runway beam runway capacity runway center line lights runway centerline runway clear zone runway drop section runway edge lights runway end identifier lights runway length runway rating runway safety area runway shoulder runway spacing runway switch runway threshold runway turntable runway usability factor runway usable distance runway visual range runway Z-configuration rupture rupture disk rupture load rupture member rupture resistance rupture strength rupture stress rural rural architecture rural conglomeration rural planning rural region rural replotting rural zone rush order rust rust mark rust pocket rust prevention rust spot rust stain rust-inhibitive pigment rust-proof metal rustic finish rustic joint rustic siding rusticated stone block rustication rustication groove rustication joint rustication strip rustics rustless rut rutting