Web-shear capacity of prestressed composite inverted multi-tee slabs

Sun Jin Han, Deuckhang Lee, Kang Su Kim

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Prestressed inverted multi-tee (IMT) slabs have been widely used in recent precast construction as a fast-built composite flooring system. However, there is a critical issue about its vulnerability in shear. To this end, a total of six IMT slabs were tested in this study, where the magnitude of prestress, and presences of shear reinforcement and cast-in-place (CIP) topping concrete were considered as key experimental variables. An analytical method capable of estimating the shear strengths of IMT slabs with topping concrete as a composite prestressed member was suggested by using the transformed section approach combined with the dual potential capacity concept. The proposed model can identify the shear strength and failure mode, and a simplified model was also developed and verified for its better applicability to be easily used in practice.

Original languageEnglish
Pages (from-to)295-304
Number of pages10
JournalACI Structural Journal
Issue number3
StatePublished - May 2021


  • Composite member
  • Inverted multi-tee slab
  • Shear design
  • Transformed section


Dive into the research topics of 'Web-shear capacity of prestressed composite inverted multi-tee slabs'. Together they form a unique fingerprint.

Cite this