International Journal of High-Rise Buildings (국제초고층학회논문집)

Council on Tall Building and Urban Habitat Korea (한국초고층도시건축학회)
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A Structural Engineer's Approach to Differential Vertical Shortening in Tall Buildings

  • Matar, Sami S. (Leslie E. Robertson Associates R.L.L.P.) ;
  • Faschan, William J. (Leslie E. Robertson Associates R.L.L.P.)
  • Published : 2017.03.01
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Abstract

Vertical shortening in tall buildings would be of little concern if all vertical elements shortened evenly. However, vertical elements such as walls and columns may shorten different amounts due to different service axial stress levels. With height, the differential shortening may become significant and impact the strength design and serviceability of the building. Sometimes column transfers or other vertical structural irregularities may cause differential shortening. If differential shortening is not addressed properly, it can impact the serviceability of the building. This paper takes the perspective of a structural engineer in planning the design, predicting the shortening and its effects, and communicating the information to the contractor.

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References

  1. ACI Committee 209. (2008). ACI 209.2R-08 - Guide for Modeling and Calculating Shrinkage and Creep in Hardened Concrete.