- incinerette
- incised
- inclinable
- inclined conveyor
- inclined gallery
- inclined guides
- inclined links
- inclinometer
- incombustible
- incombustible construction
- income taxes
- incommensurable
- incomplete excavation
- incomplete moment
- inconvenient territory
- increase
- increment
- indented bar
- independent from
- indeterminate error
- indication
- indirect foundation
- indirect heating
- indirect lighting
- indirect vent
- individual leadership
- indoor storage
- induct
- industrial area
- industrial centre
- industrial city
- industrial loader
- industrial noise
- industrial production
- industrial respirator
- industrial textile
- industrial treatment
- inefficiency
- inert
- inertia screen
- inertness
- infer
- inferior
- infilled wall
- infilling panel
- infiltration area
- infiltration capacity
- infiltration curve
- infiltration gallery
- infiltration irrigation
- infiltration routing
- infinite discontinuity
- infinite loop
- infinite strip
- infinitely rigid
- infinitesimal displacement
- infix
- inflammable materials
- inflate
- inflexible
- inflow hydrograph
- inflowing
- influence area
- influent channel
- information area
- information carrier
- information file
- information reception
- infra
- infrared radiation
- initial investment
- initial moment
- initial prestress
- initial set
- initial shrinkage
- initial slippage
- initial speed
- initial strain
- initial value
- initialize
- initiate
- initiating explosive
- inject
- injecting grout
- injection
- injection lance
- injection method
- injection mortar
- injection moulding
- injection needle
- injection process
- injector burner
- injury
- ink
- ink black
- ink-drawing
- inking
- inking-in
- inky
- inland traffic