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ISO/TR 25439:2025

Design examples of concrete-filled steel tubular (CFST) hybrid structures in accordance with ISO 16521 ISO/TR 25439:2025

Publication date:   Dec 10, 2025

General information

60.60   Standard published   Dec 10, 2025

ISO

ISO/TC 71/SC 9

Technical Report

91.080.99   Other structures

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Scope

This document provides design examples of concrete-filled steel tubular (CFST) hybrid structures in accordance with ISO 16521.
This document includes the design calculation of major structural types in ISO 16521, i.e., trussed CFST hybrid structures, concrete-encased CFST hybrid structures. The design examples cover the major loading cases for the structures and follow the design procedure presented in ISO 16521:2024, Clause 6.

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PUBLISHED
ISO/TR 25439:2025
60.60 Standard published
Dec 10, 2025




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