The First Concrete Frame 19201930 Building 1903 Tri-State Building The first dev loping decade 65.5m,15f1rs. Materials:Iron,Masonry,RC.Stee Now demolished,and unfortunately n Structural systems: Frame,frame with braces,frame and walls photos or no pictures. er Work Empire State Building ·212ok62gtom189t connected by rivets wa.w e State Buil pire state Building New York,USA,1913-1933 1950~1980 Structural systems: 本课件版权归作者所有，仅供个人学习使用，请勿转载。 3  1903  Tri-State Building 65.5m,15flrs. Now demolished, and unfortunately no photos or no pictures. The First Concrete Frame Building 1920～1930  The first developing decade  Materials：Iron, Masonry, RC, Steel  Structural systems： Frame, frame with braces, frame and walls Empire State Building Master Work  It was the world‘s tallest building from 1931- 1972. 102 storeys, 432m.  Steel, steel with braces, connected by rivets.  The Empire State Buildings design was inspired by a pencil with the word‘s “Make it tall enough." Empire State Building  New York, USA, 1913-1933 Source from : http://skyscraperpage.com/ 1950～1980  The second developing decades  United State, Europe countries  Materials：RC, Steel, Pre-stressed RC  Structural systems： frame, frame with braces, frame and walls, wall structures, tube structures… 本课件版权归作者所有，仅供个人学习使用，请勿转载