Ключевые слова: balance, building activity, cabin, clear sky, construction, construction machinery, construction site, control, copy space, crane, cross section, day, equipment, high section, high up, horizontal, housing project, hydraulics, industry, isolated, machine, machine part, metal, mobility, no people, objectsequipment, outdoors, shape, single object, sky, sparse, standing, steel, strength, tall, tower crane, turning, wire, yellow,