Cinematic 8K 7680×4320 30p. If you desire, you can grab the any 4K or HD crop part you wish. Cranes and construction workers working at a major. Builders on the building site. Concrete casting on reinforcing bar of floor in industrial construction site. Crew members pumping concrete into wooden forms. Cast in place concrete Pour. Huge concrete boom pump with tall arm pumping concrete on top of the building with workes.