- inspection tunnel
- inspection well
- instability
- install
- installation drawing
- installation work
- instance
- instant load
- instantaneous force
- instantaneous pulse
- instruction address
- instruction register
- instrument observation
- insular shelf
- insulated door
- insulating board
- insulating fiberboard
- insulating flanges
- insulating glass
- insulating holder
- insulating joint
- insulating work
- insulation cement
- insulerete
- insurance supply
- intake basin
- intake chamber
- intake gallery
- intake tank
- intellectual property
- intercepting ditch
- intercepting system
- interchamber partition
- interconnect
- interdependent
- interelectrode capacitance
- interface boundary
- interface regions
- interfloor landing
- interim development
- interim financing
- interim measures
- interim repost
- interior architecture
- interior chimney
- interior column
- interior delta
- interior design
- interior door
- interior finishing
- interior fittings
- interior girder
- interior plaster
- interior span
- interior staircase
- interior support
- interior wall
- interior work
- interlace
- interlaced scanning
- interlacing arcade
- interlock
- interlocking tile
- intermediate airdrome
- intermediate area
- intermediate beam
- intermediate belt
- intermediate bent
- intermediate bulkhead
- intermediate ceiling
- intermediate column
- intermediate contour
- intermediate diaphragm
- intermediate floor
- intermediate frame
- intermediate gate
- intermediate landing
- intermediate payments
- intermediate pier
- intermediate point
- intermediate repair
- intermediate rib
- intermediate span
- intermediate stiffener
- intermediate storey
- intermediate support
- intermediate tie
- intermediate truss
- intermediate value
- intermediate web
- intermingled aggregate
- intermittent
- intermittent grinding
- intermittent heating
- intermittent load
- intermittent wave
- intermittent welding
- intermitting program
- internal ambiance
- internal architrave