narrower concept adjustment Concept assembly period Concept backfilling Concept building survey Concept cantilevering Concept concrete transport Concept construction on existing subgrade Concept draw-down method Concept driving Concept electrical assembly Concept embedding Concept facade anchoring Concept floating in Concept formwork engineering Concept hot laying Concept laying Concept lift-slab method Concept material flow Concept rapid assembly Concept repetitive process Concept repetitive sliding process Concept shotcrete method Concept staking out Concept through pressing Concept transverse slide Concept tunnel driving Concept use of machines Concept woodworking Concept