ABSTRACT

Lateral restraint, 460, 571, 573-4 Lateral support – basements, 248 Lateral support – walls, 434, 460, 573 Lattice beam, 406, 423, 473-4 Lattice girder, 406 Lattice jib crane, 168 Leader – piling rig, 217 Lean-to roof, 431 Lens light, 488 Levelling, 112-4 Lift casting, 235 Lighting: cable, 687 circuits, 688-9 sites, 88-90