Tools & Resources
BlueScope Steel Supports PCA Congress In More Ways Than One
Perth Convention & Exhibition Centre is roofed with LYSAGHT KLIP-LOK® 406. The roofing and walling structures are made from GALVASPAN® steel. LYSAGHT BONDEK® structural decking was used for the concrete flooring and LYSAGHT CUSTOM ORB® is used for the permiter's soffit lining.
| Location: | Perth, Western Australia |
| Country: | Australia |
| Client: | Perth Convention and Exhibition Centre |
| Architect: | The Cox Group |
| Engineer: | Arup |
| Builder: | Multiplex |
| Fabricator: | Keith Hutsen Roofmart WA 5 Chilver Street Kewdale WA 6105 Phone: 08 9365 5444 |
| Products Used: |
LYSAGHT BONDEK® LYSAGHT CUSTOM ORB® LYSAGHT KLIP-LOK® 406 |
BlueScope Steel is a proud supporter of the Property Council of Australia in more ways than one. Not only is BlueScope Steel the principal sponsor of the 2004 PCA Congress, it has provided more than 500 tonnes of steel for the Congress venue, the just completed Perth Convention & Exhibition Centre.
Built by project developer Multiplex and designed by architects, The Cox Group, Perth's latest architectural triumph sits at the foot of the city and according to Simon Bodycoat, one of the project architects working with The Cox Group on the massive project, ít was all about the roof.
"From an architectural point of view it was critical to get the roof right," he says.
Because of the roof's 250 metre radius, The Cox Group specified a wide pan profile for performance and aesthetics. The most cost effective, aesthetically pleasing and practical solution was 280 tonnes of specially formulated high tensile ZINCALUME® steel in LYSAGHT KLIP-LOK® 406 profile.
A further 1,000 square metres of LYSAGHT KLIP-LOK® 406 using a thinner base metal thickness was used in areas requiring a smaller radius down to 37.5 metres.
LYSAGHT KLIP-LOK® 406 is a strong, durable and versatile long length concealed fix roof and wall cladding system. It combines the strength of steel, with smart fluted pans and a lock action rib design which, together with concealed fastening, enables its use on many applications from low pitched roofs to vertical.
The magnitude of the radius required roofing with a high rib profile to carry water and drain effectively at the crest of the arc. LYSAGHT KLIP-LOK® 406 is designed to drain effectively with concealed fastening ensuring no visible screw heads and therefore no piercing of sheeting reducing possibility of leaks.
Site restrictions meant the product could not be roll formed on site. However, varying lengths of sheets, all produced in one batch to ensure uniformity, were provided continuously over 12 months in lengths up to 26.1 metres laid in sets of three across each of the 66 metre wide exhibition pavilions.
The major feature of the Convention Centre's interior is the 267 metre long, 66 metre wide exhibition pavilion building providing 16,600 square metres of floor space which can be subdivided to form six separate smaller pavilions.
The project's structural engineers Arup, specified roofing and walling structures made from GALVASPAN® steel.
To be able to do this, the larger pavilion's roof structure comprises five pairs of primary trusses spanning its length and enclosed within the bulkheads above the pavilion division walls. The pavilions feature purlin spans of six metres, with the purlins spaced at 1.2 metre centres.
Roofmart WA supplied more than 31,000 lineal metres of purlins and girts made from GALVASPAN® steel for the project to minimise cost and construction time. Purlins were made to order for the project as the roof of the Centre curves in a north-south direction and tilts in an east-west direction.
The roof trusses for the halls are a three dimensional design with the entire frameworking tilting to give the roof its distinctive gently curved appearance. After all, as the architects say, it's all about the roof.
Approximately 125 tonnes of purlins are used in the roof structure, comprised predominantly of 100 millimetre and 200 millimetre Cee purlins and 150 millimetre and 200 millimetre Zed purlins.
Generally, Cee Sections are used for simple span constructions with the purlins butted at internal supports. In cases where deflection is a design limitation and the building is of a suitable size, single Cee Sections can be used over two or more bays.
Zed Sections with one broad and one narrow flange are designed to nest neatly and are intended for lapping at internal supports to produce structurally continuous lines for the length of the building. Structural continuity results in improved rigidity but lapping also doubles the thickness of purlin over supports where the bending moments are greatest.
Other products used in the construction include Fielders KF57®, Fielders RF 55® and LYSAGHT® BONDEK structural decking for the forming of the concrete flooring, all of which are made from DECKFORM® steel and LYSAGHT® CUSTOM ORB which was used as a cost effective solution as the soffit lining around the perimeter.
Fielders KF57® and RF55® are registered trademarks of Fielders Australia Pty Ltd.
