Vibrating concrete on stairs.
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Previously:
Demonstration of concrete vibration - GIF
Apprentice stabs concrete - GIF
Building concrete slab houses - GIF
Concrete bag lift fail - GIF
Concrete chainsaw - GIF
Four man wet concrete object retrieval technique - GIF
Installing precast concrete stairs - GIF
Passing concrete to plasterers - GIF
Pouring a concrete roof - GIF
Pouring concrete from an excavator cab - GIF
