Abstract

In the last few years, considerable attention has been paid to the roof cladding
systems due to their progressive use in the construction of low-rise buildings. The design of
such systems has been gaining importance since they are subjected to severe damage and
failure caused by high wind events, particularly at their fastener connection points. To offer a
solution for predicting the maximum pull-out force capacity of cladding fasteners, this article
presents a mathematical model for a fastener made of high strength steel austenitic 316. In this
model, the two basic parameters of the fastener, namely the thread depth and the thread angle
are included as the main elements of the contact surface between threads and the low carbon
mild steel batten/purlin sheets. This mathematical model will be proposed to estimate the
maximum pull-out force capacity of the cladding fasteners made of cold-formed A2 316
stainless steel. After finding the parameters of the mathematical model by using an
optimization method based on a genetic algorithm (GA), a comparison will be made between
the mean estimation error of the new model and the formerly proposed ones.