Site Visit 2: Four days later the portal beams have been erected along with some of the purlins. There is bracing between the purlins, fly bracing and horizontal cross bracing between the beams. Note there is haunching at the knee joints but none at the apex of the beams.
Diagonal cross bracing between beams
View of apex of rafters showing some purlins already connected and cleats in place ready for more.
Close up view of apex of portal beams showing rigid joint bolted connection.
View showing Z purlins facing into the apex to avoid tendency to rotate if facing outwards.
Site Visit 2: Four days later the portal beams have been erected along with some of the purlins. There is bracing between the purlins, fly bracing and horizontal cross bracing between the beams. Note there is haunching at the knee joints but none at the apex of the beams.
View of apex of rafters showing some purlins already connected and cleats in place ready for more.
Close up view of apex of portal beams showing rigid joint bolted connection.
View showing Z purlins facing into the apex to avoid tendency to rotate if facing outwards.
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