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目前世界最高的钢结构大楼为美国109层的西尔斯大楼。美国计划在80年代建造150层的摩天大楼。美国的高层建筑绝大部分采用钢结构,但对钢和混凝土亦有争论。然而,多数人主张用钢,因为它施工工期短,(工期不包括开工前的准备工作时间),一般钢骨架都在工厂加工,到现场安装,每层楼只需2～3天即可。虽然钢结构稍贵些,但能早日投入使用,在经济上还是划得来的。国外钢筋混凝土高层建筑最高已达76层,一般约在50层左右,大多建于地耐力强
The world’s tallest steel structure is the 109-story Sears Tower in the United States. The United States plans to build a 150-story skyscraper in the 1980s. Most of the tall buildings in the United States use steel structures, but there are also disputes over steel and concrete. However, most people advocate the use of steel because it has a short construction period (the construction period does not include the preparatory work time before the start of construction). Generally, steel skeletons are processed at the factory and installed on the site. Each floor can be used for 2 to 3 days. Although the steel structure is slightly more expensive, it can be used as soon as possible and it is economically well-understood. The highest number of foreign reinforced concrete high-rise buildings has reached 76 floors, generally about 50 floors, and most of them are built on strong ground.