- U-hook
- u-shaped link
- uhpc
- uls
- ultimate
- ultimate combination (of actions)
- ultimate compressive strain
- ultimate compressive stress
- ultimate limit state (ULS)
- ultimate load analysis
- ultimate moment
- ultimate moment capacity
- ultimate resistance
- ultimate strength
- ultimate stress
- ultimate tensile strain
- unbonded tendon
- unbraced structure
- uncoil
- uncracked
- uncracked analysis
- uncracked condition
- uncracked flexural stiffness
- uncracked section
- underground
- underwater concrete
- undo
- uniaxial bending
- uniform
- uniform distribution of load
- uniform elongation
- uniform load
- uniformly distributed load(ing)
- unit
- unit length
- unit mass
- unit weight
- unreinforced
- unscrew
- unskilled labourer
- unskilled workman
- unstressed
- unsupported edge
- untensioned reinforcement
- unwind
- upper bound
- upper characteristic value
- upset
- upsetting limit