MAJOR PROJECT

The Gehry inspired warehouse and showroom model was built with cardboard and balsa wood. The cuved section of the steel columns was cut first and the webs added at a later stage.

Gehry uses layers of corrugated walling topped with plywood prior to finishing with his trademark metallic skin of stainless steel or titanium. This layering has been represented in the model.

The curved columns are separate but braced from the main portal frame structure. Each column is well braced with 100mm equal angles formed in a cross.

COLD FORMED PORTAL FRAME

The cold formed portal frame rafter is lighter than the hot rolled section. This enables the roof structure to lifted in place by a crane and therefore it can be assembled on the slab where labour costs and safety are advantageous.

MITRE 10 Anakie Road

This photo indicates a step between the steel walling and concrete panel lean to section. The UB column has a circular hollow section bracing tie. The UB and haunch are rigidly connected to the column. The raking parallel channel is fixed to the UB column. Both the column and the rafters are braced using rod fixed through the column and the rafter flanges.

The lean to roof rafters are connected to the main rafter via cleats welded to the UB flanges and boltes to the web of the vertical UB dropper which is welded at a mitre joint to the UB rafter. This is inturn braced to the roof via an angle.

REECE PLUMBING

Reece plumbing in North Geelong is a skillion type portal frame building where the roof pitches in one direction with a span of 15m - 20m.

The UB rafters are rigidly fixed to the columns using plates welded to the end of the rafter and bolted.

Diagonal rod bracing penetrate the web of the UB rafter and is tensioned by a bracket on the other side of the flange.

Lighter gauge C purlins fixed to cleats welded to the top flange of the UB rafter support safety mesh, sarking and the roofing.

Each of the columns is tied to each other using a Parallel Flange Channel PFC bolted to a cleat welded to the web of the column. This ensures that the portal frame is braced in both directions and beding moments are transfered to the bracing bay.

Equal angel fly bracing fixed to a cleat welded to the web of the UB rafter helps to stabilse the UB and prevent it from twisting mid point and aid in the longitudinal bracing of the portal frame.

MELBOURNE RECITAL CENTRE

The Melbourne Recital Centre is a 1000 seat theatre designed by Ashton Raggatt McDougal. The Steel and concrete construction is scheduled for completion in 2009. The main hall is constructed with a steel frame and clad with precast concrete panels.

BORAL PARTIWALL

Boral Parti Wall is a 25mm fire resistant plasterboard that is ideal for Multi Residential Timber Framed construction. Rather than a layer of 16mm firestop plasterboard on each stud wall a single 25mm layer in the cavity between two stud walls is used. The system has proven itself when a unit was set alight while under construction. The adjoining unit was saved from the fire.

The partiwall is slotted together rather than the traditional taped system.