A machinery room in a grocery store has: 1-1 ton open type(belt drive), 2-5 ton semi- hermetics, 4-7.5 ton semi-hermetics, 3-3 ton hermetics. According to the UMC, what size(sq.ft.) natural ventilation openings are required?
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windy city oil field, karamay, xinjiang, China
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Laying plastic pipes drainage to drain the water around the house of drainage system
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Concrete cube or construction brick and trowel. Construction concept and mason
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Aerial view of many colorful cars parked on parking lot with lines and markings for parking places and directions.
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Worker in a carpentry shop measures plywood for cutting
Apartment Fusebox Installation by Caucasian Electrician in His 40s. Residential Home Electric System Theme.
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Joyful young man construction worker holding mobile phone and smiling while standing by the table with laptop
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