Experimental investigation on the pull through failure of roof cladding to purlin connection considering overhang roof

Abstract

The study on the effects wind loading to the roof cladding and purlin connection has raised a great interest among researchers. In some cases, the failure of roof cladding initiated at the overhang roof was due to the development of uplift force created by the strong wind. However, these studies are limited to the non-engineered building without considering overhang roof. This paper studies the effect of roof cladding types, overhang length and cladding thickness in term of pull through capacity of the overhang roof using simple pull through tests. The tests were conducted on two types of claddings namely, corrugated and trapezoidal roof cladding. In the case of corrugated cladding with 0.28 mm thickness, the specimen with 200 mm overhang length shows the highest pull through capacity with 1.534 kN followed by 300 mm overhang length with 1.083 kN. While, for trapezoidal cladding with 0.35 mm thickness, the 300 mm overhang length recorded the highest pull through capacity at 1.163 kN compared to 200 mm overhang length (1.068 kN). It was noted that shorter length of overhang developed stronger roof cladding to purlin connection. The most efficient connection for roof cladding to purlin connection was found to be 0.23 mm thickness of corrugated roof cladding with 200 mm overhang length.