- large panel
- large size
- large span
- large-grain
- larmier
- larmier girt
- Larsen section
- laser levelling
- laser welding
- last
- latch bolt
- lateral buckling
- lateral contraction
- lateral deviation
- lateral displacement
- lateral drain
- lateral edge
- lateral hood
- lateral pressure
- lateral reinforcement
- lateral rigidity
- lateral road
- lateral sewer
- lateral stress
- laterals
- laterite
- lateritic material
- latest data
- latex cement
- lath wood
- latrine
- lattice
- lattice bridge
- lattice mast
- lattice point
- lattice railing
- lattice roof
- lattice system
- lattice truss
- lattice work
- latticed bar
- latticed diaphragm
- latticed door
- latticed partition
- latticed structures
- launch
- launching
- launching bearing
- launching cradle
- launching girder
- launching nose
- launching-ways
- lava flow
- lavabo
- lave
- lawn
- lay light
- laying out
- layout axis
- layout network
- layout scheme
- leached zone
- lead paint
- lead regulus
- lead work
- leader
- leading institute
- leading technology
- leaf quard
- leaf stop
- league
- leakage flux
- leakage plane
- leaking joint
- lean
- lean lime
- lean mortar
- learning curve
- large knot
- large pored
- large scale
- large-block
- larry
- lashing
- latch
- latch handle
- latent image
- later on
- lateral
- lateral bracing
- lateral creep
- lateral daylight
- lateral deflection
- lateral diagonal
- lateral ditch
- lateral impact
- lateral intersection
- lateral load
- lateral moraine
- lateral restraint