By Simon Shim and Baro-Ck
High-rise buildings have been constructed with a structural material; concrete and steel. Along with market boost, both material strengths has advanced from traditional level to ultimate level and implemented broadly. Design and construction industries benefit new technology and push a building height 800 meter and one kilo-meter as well as the structural slender ratio (building height to base dimension ratio) well beyond 10 to 20. In this Article, we would like to introduce strut tie methodology and case studies on the foundation system design and construction implementation. The strut tie methodology was implemented in a single member such as a deep beam and a pile cap designs but never been applied to mat.