Long Span Portal Frame Construction Detail 2

Section is of the same structure as previous, however running in a perpendicular direction. The section shows the wall/roof and knee joint, which is important and allows the open span.

I realised after scanning this image in that there is something wrong going on with the top of the wall cladding. This would need to be fixed to the frame somehow, which I'm obviously unsure about...

Oh and i forgot to label the Lysaght kliplock roof @2 degrees :P

Box Gutter Detail

The Box Gutter is used in this occasion, and could be installed as following.

Important aspects include:

The cleats, which are usually 8-10mm thick, and used to attach girts or purlins to the main structure. These are fillet welded to the main frame.

The Gutterboard, which is used to allow walking in the gutter for maintenance. Mesh can also be placed over the gutter to minimise the need for clearing and prevent blocking.

The Lysaght Custom Orb Cladding is attached to the wall frame with girts.

Flashings are important as water is the most problematic aspect in buildings. All roofing materials should overlap and drain into appropriate areas.

Long Span Portal Frame Construction Detail

The following drawing shows the basic construction of a Long Span Building, eg. warehouse, gym, or any other structure that requires a large uninterrupted interior space.

The beam is connected to the staunchion with a bolting configuration, however this could be welded. The knee joint is this meeting between staunchion and beam, and is integral to the efficiency of portal frame design.

The minimum height of the slab above ground level is 75mm.

The minimum overlap between the concrete panel and the Lysaght Custom orb Cladding is 65mm.

An exciting excursion to Bunnings Warehouse

First blog post ever! The photos document a visit to Bunnings Waurn Ponds. In the timber section the long span portal frame was easily photographed.

View of the fixing between internal column and rafter, using a bolting configuration. The gentle slope of the roof can be seen in the rafter angle. Also visible is the central haunching.


The roof cladding is lined with a mesh-like material, and thin tension cross bracings are used to lock the structure together. Light is allowed through the clear sections in the roofing.


More views of the bolting connection, fly bracing is also positioned from the main rafter to support the purlins and prevent twisting.


The wall frame is connected to the column with fly bracing.


Connection used on the roof near an angled corner wall. Angled structural beams are bolted to cleats along the rafter.


View of the span of the interior space.


Cross bracing is used beneath the wall cladding. Because of the lack of wall cladding on the bottom half of the wall, no girts are needed. This allows easy access to the timber 'yard' via vehicles, etc.


BUNNINGS WAREHOUSE
An architectural masterpiece