Ключевые слова: building activity, built structure, cement, concrete, construction industry, construction job, construction site, construction worker, driven pile, engineer, equipment, footing, foundation, friction pile, heap, heavy, high strength, i shape piles, industry, infrastructure, installing, material, meadow, object, plank, precast, prestressed concrete, stack, stockpile, storehouse, strength, structural, structure, supply, support,