ABSTRACT
This paper describes the verification of the deformation limit proposed by Lu et al (1994a) using the test results of T-joints in cold-formed RHS sections performed in Australia and Japan. Both web crippling failure mode and chord face yielding failure mode are investigated. For the web crippling failure mode, the 3%bo deformation limit for the ultimate strength is verified. For the chord face yielding failure mode, a validity of β and 2γ is proposed in determining whether the design is governed by serviceability or by strength. The governing load is compared with the capacities of T-joints determined using CIDECT design formula, Kato model, modified Kato model and a membrane mechanism model.
