Completed site visit (Bunnings)

here you can see the 'c' purlins resting on the outer steel beam
This box gutter is connected to a concrete slab on the exterior of the wall. The services have been hidden by the steel column. Also above this you can see safety mesh.
At the central apex, a rigid frame has been added to maxamise the span of the steel rafters


Here's a knee joint of a portal frame. The thicker area attached is the haunching to assist in bearing the loads of the building