Corrected entry: During the explosions of the water tanks on the top floor, if you look closely as the miniatures explode, part of the floor is already broken and falls apart a second before the explosives go off.
Corrected entry: When Wagner's character tries to phone for help but it was not working didn't he say to one of his assistants to "turn off the phones i had enough with phones for one day" so why should he try the phone when he wanted the phones disconnected?
Corrected entry: In the security room. The security guard shouts out "there's something on 81","On 65 the whole reception area is on fire",and "What's she doing on 87?" Now in 1974 when the movie was made. The security systems were not like they are now. You still had night watchmen,and watchclock stations. Besides that there was nothing identifying what the view screens were monitoring.johnp
Corrected entry: How on earth did they fill those tanks with almost four thousand tonnes of water? The tanks are 1,800 feet off the ground! There is no pump in the world that could lift water that high - the hydraulic pressure is beyond the means of present day technology, let alone that of 1974.
Corrected entry: When the first woman to use the breeches buoy is almost to safety, in the background you see the burning glass tower. In the lower part of the burning tower, there are two windows which have in them, not fire or flames, but alternating red lights? I can't for the life of me figure out what they are doing there. You can see these mysterious red lights again when O'Hallorhan is being lifted by chopper to save the people trapped in the scenic elevator.
Corrected entry: In the opening scenes, as the helicopter carrying Doug Roberts approaches the tower landing pad, you see the wind sock going from right to left, yet the helicopter approaches the camera straight on. An aviator will always land straight into the wind - there's nothing to prevent them from doing it here.
Corrected entry: It is stated several times that the tanks on the top of the building contain one million gallons of water. Know how much one million gallons of water weighs? Two thousand, two hundred and sixty eight metric tonnes. There is no building in the world that could take that kind of weight on the top floor, and this doesn't even begin to take into account the huge steel tanks, pumps, pipes and what have you. It would be like sticking a brick on top of a drinking straw.
Corrected entry: There are far too many plate-glass (as opposed to safety glass) widows in high floors of the whole tower. One is even broken by a woman throwing a dining chair through it. Try that with your home double-glazing even.
Corrected entry: Just after the people have been subjected to the fire down on the 81st floor, they come up with the elevator to the promenade again. After that, we are shown a outside view of the tower. There now seem to be two fires, almost 15 floors apart.
Corrected entry: In the scene where Robert Wagner's blonde secretary, dressed only in a man's shirt, is trapped in a flaming room, she bashes out a picture window with a chair. The rush of air causes the flames to billow towards the window, igniting the secretary, and she falls/dives out the window to her death. The stunt double who catches fire is obviously fully dressed, as you can see the outline of his fireproof suit, complete with trousers. When the secretary goes out the window, she's dressed only in her shirt.