- ice-loading
- idealization of the structure
- immediate deformation
- immediate losses
- immediate strain
- immersed tunnel
- impact
- impact coefficient
- impact load(ing)
- impact strength
- imperfection
- imperfections during execution
- impermeable
- imposed deformation
- imposed load
- in-situ concrete
- inaccuracy
- inclination
- inclined stirrup
- indentation
- indented wire
- indirect action
- industrial water
- inelastic
- inertia
- infill
- infrequent combination
- ingress of aggressive agents
- initial
- initial eccentricity
- initial loading
- initial prestress
- initial production testing
- initial setting time
- initial strength
- initial stress
- initial test
- initiation phase
- inject
- injecting process
- injection
- injection pressure
- inner face (of wall)
- inner face of a support
- inner span
- insert
- inspect
- inspector
- instability
- instantaneous deformation
- instantaneous strain
- insulation
- integrate
- integration, numerical
- interaction diagram
- interior column
- interior span
- intermediate support
- internal
- internal diameter
- internal dimension
- internal force
- internal friction
- internal lever arm
- internal moment
- internal span
- internal support
- internal vibrator
- interpolate
- intersection
- interspace
- interstorey drift
- intrinsic
- investigation
- invitation to tender
- iron
- iron wire
- irreversible
- isolated column
- isotropic
- iterate