Lift-Slab Construction

Definition

A method of building multi-story site-cast concrete buildings by casting all the slabs in a stack on the ground, then lifting them up the columns with jacks and welding them in place.

Purpose

Lift-slab construction streamlines the building process by casting concrete slabs at ground level, reducing the need for extensive scaffolding and formwork. This method enhances safety, reduces labor costs, and accelerates the construction timeline.

Examples of Use

• Office buildings: Constructing multi-story office buildings quickly and efficiently.
• Parking garages: Building large, multi-level parking structures using lift-slab techniques.
• Residential buildings: Applying lift-slab methods in the construction of apartment complexes.

Related Terms

• Precast Concrete: Concrete elements cast in a controlled environment and then transported to the construction site.
• Formwork: Temporary molds used to shape and support concrete until it hardens.
• Jacking: The process of lifting slabs or other structures using hydraulic jacks.

Notes

• Lift-slab construction requires precise engineering and coordination to ensure the safe lifting and placement of slabs.
• The method is best suited for buildings with repetitive floor plans and uniform slab designs.
• It reduces the exposure of workers to height-related risks, improving overall site safety.