 By 1930, skyscrapers were being erected in just 12 months by teams of workers totalling 5,000 men, with four floors being assembled in a typical week.Building skyscraper towers involved some adaption of engineering techniques, as effectively two different buildings were being designed – the base and the tower – which needed to be efficiently linked using elevators and other service facilities.Most new offices settled around a standard size, wide by deep, depending on the height of the ceiling, with multiple small windows considered better than a few larger ones.