Close up scene with two engineers or technicians talk together and stay on rooftop of construction site.

Two engineer man as young and senior worker talk and discuss during walk along air vent line on rooftop of construction…

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Young engineer point his hand to the front and explain to senior coworker and they also stay near line of air vents at …

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Two technician or professional engineers express happiness during work together on rooftop of construction site.

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Close up shot young and senior engineer man work together using building plan or drawing in workplace of construction s…

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Two technician or professional engineers express happiness during work together on rooftop of construction site.

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Two engineers or technician man discuss together using building plan or drawing and they also stay on rooftop area of c…

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Young engineer hold drawing plan of building and discuss with senior coworker and they also stay on rooftop of construc…

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Wide shot of two engineers or technician man discuss together using building plan or drawing and they also stay on roof…

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Close up scene with two engineers or technicians talk together and stay on rooftop of construction site.

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Senior engineer and young worker shake hands and look at camera and senior man also show thumbs up for successful of th…

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Senior engineer man look to drawing plan and discuss with young foreman or technician during work at construction site.

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Senior man as professional engineer or technician use walkie talkie point over and stand near line of air vents on roof…

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