elevator shaft formwork

formwork scaffolding scaffold construction building concrete shuttering contractor slab shoring scaffolder concretefloors concreteconstruction site project equipment frame activity element scaffoldtube strong reconstruction scaffoldingclamp scaffoldingcoupler engineering bridge built structure material industry machinery beam fold powerful safety development connecting leveling alignment storage stacking wooden beams clamp panel formworkpanel reinforced galvanized reinforcement cage thread nut armature stored elevator shaft assembled system