I took a trip to Bunnings waerhouse, a structure where portal frames were likely to be seen rather than covered up and is large enough to require them.
There is a picture of the junction between the peak of the roof, where the purlin supports the rafters where the rafters meet at the outer shed.
A picture of the middle of the shed where the rafters meet the purlin, with the hanging beam used to support the load of the roof
A picture displaying the connection of the steel frame reaching the concrete base
A picture displaying the complete interior of the rafters, and long span supporting structures to hold the roof up
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