- replaceable item
- regulating siphon
- regulation work
- regulator storage
- reheat
- reinflation
- reinforce pile
- reinforced beam
- reinforced brick
- reinforced brickwork
- reinforced column
- reinforced glass
- reinforced insulation
- reinforced masonry
- reinforced mortar
- reinforced structure
- reinforcement
- reinforcement chair
- reinforcement cover
- reinforcement holdfast
- reinforcement layout
- reinforcement mesh
- reinforcement plate
- reinforcement pretensioning
- reinforcement shop
- reinforcement spacer
- reinforcement stresses
- reinforcement tensioning
- reinforcing
- reinforcing angle
- reinforcing bar
- reinforcing cage
- reinforcing fabric
- reinforcing plate
- reinforcing ring
- reinforcing steel
- reinforcing strands
- reinforcing work
- rejection
- relation operation
- relational operator
- relative consistency
- relative deflection
- relative equilibrium
- relative errors
- relative rotation
- relative stiffness
- relative strength
- relative transmissibility
- relativity theory
- relaxation
- relaxation property
- relay
- relay potential
- relay stud
- releasing hook
- relevant
- releveling
- reliability
- reliability index
- reliable information
- relic
- relict
- reliction
- relief bridge
- relief painting
- relief plan
- relief road
- relief sewer
- relief vent
- relief well
- relieving vault
- religious building
- rental room
- repaginate
- repair cost
- repair quay
- repair shop
- repairer
- repairing basin
- repeated blowing
- repeated drafting
- repeated loading
- repeated stress
- repeater
- repeater man
- repellent
- repelling groin
- repencil
- Replacement cost
- Replacement investment
- replenishment
- repoint
- report information
- reprecipitation
- represent
- representation
- representation sample
- Representative firm
- representative specimen