The steel structure of the building is supported two floors below street level on a solid concrete mat which is nine feet thick. The steel is fireproofed with terra-cotta tiles and supports reinforced concrete floors. The steel structure allows for a total of 840 windows, which cover approximately 20 percent of the building's surface area. Numerous services in the Aldred Building identify it as a modern structure, including conditioned ventilation in the basement and first nine floors, with fresh air 'washed' and filtered in an air-cleaner. Aldred Building features a central vacuum system, an electric time-clock system, an incinerator, paper baler and an ozone machine in the kitchen to eliminate odours. All the floors contain built-in ducts for electrical and telephone cables. The six high-speed elevators were the most modern available in the day, and were installed by Otis Fensom. The cars travel at per minute and have teak interiors.
