Builders and Suppliers of Wide Span Curved Roofs

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Pinkenba 370

Pinkenba 370 logo Spantech Pinkenba 370

Pinkenba 370

Span further than you can imagine

The curved Pinkenba 370 profile option will span further than any other Australian roofing system.

Applications

  • Curved Roof
  • Skillion Roof
  • Cantilever Eaves
  • Walls and Cladding

Product Specification

  • Base metal thickness: 1.2 mm
  • Max. curved profile span: 40 metres*
  • Max. straight profile span: 9 metres*
  • Nominal cover: 375 mm

* Spans, cover width and sizes are subject to confirmation by a certified structural engineer.

Recent Projects

The Pinkenba 370 is named after the ground-breaking bulk storage project at the Port of Brisbane, Pinkenba, Qld,  The multipurpose bulk storage facility was designed and constructed for Grainco in 2000. The building was used for the storage of urea, grain and other agricultural produce.

Since then, the Pinkenba 370 profile has been used for projects in the education, aviation, sport and recreation, community sectors. See Projects for our recent Pinkenba 370 projects.

Technical Information

The Pinkenba 370 is the second in a series of several wide-span rollformed metal profiles invented, developed and tested by Spantech.

The Pinkenba 370 is a standing seam metal profiles which uses Spantech’s patented self locking edge connection method.

With the longest straight span in it’s class, and unrivalled curved span width, the Pinkenba 370 is designed to reduce the total amount and cost of structural steel in your project.

Spantech profiles are a single skin, non-insulated profiles so they will not introduce a fire risk.  All out profiles can support conventional insulation and ceiling or wall lining systems.

The profile is manufactured on site in continuous lengths with one of Spantech’s two dedicated mobile rollforming machines. The configuration of each machine is different to provide maximum flexibility and ensure Spantech can offer our cost effective site manufacturing service on most sites.

Key features

  • The system is simple and strong, yet elegant and graceful
  • The Spantech System is based on site-rolled metal building panels of various sizes and thickness
  • Panels are capable of use either flat or as self-supporting curved arches
  • Profiles clip together without fasteners using a patented connection. The connection is strong, water tight and maintenance free.
  • Maximum spans:
    • Woomera 300 – 30 metres
    • Pinkenba 370 – 40 metres

Panels interlock to form a continuous structural membrane with no screws and minimal bolts. All attendant works – skylights, ventilators, lights, insulation, ducts, ceilings and the like – can be incorporated easily and economically.

Mobile Rollforming Machine

The Spantech Rollforming Machine is the heart of the Spantech Construction System.

The rollforming machines are mobile so they can manufacture the Spantech panels on site. The fully self contained machines are housed in modified shipping containers so they can be transported by road, sea or air. This makes the Spantech Construction System ideal for construction projects in remote locations.

Spantech has a fleet of seven mobile rollforming machines – five Woomera 300 machines and two larger Pinkenba 370 machines.

On-Site Manufacturing

On-site manufacturing allows Spantech to roll panels in continuous lengths.

Straight panels are formed in the first manufacturing stage. Straight panels are used for end walls, flat roofing and composite formwork. The straight panel is fed into the curving section of the machine to form the distinctive Spantech curved panel.

The Pinkenba 370 curved profile can span up to 40 metres wide, so each curved panel may be as long as 46m. The on site manufacturing process therefore requires a relatively flat, large unobstructed area. A car park or sports field that has direct crane access to the building site is ideal. Spantech will help assess a site to ensure that there is a suitable manufacturing space available.

The rollform machine can manufacture straight and curved panels simultaneously. The process is fast. It minimises waste and reduces labour and handling costs.

Erection Process

Panels are prepared on the ground in lifts of either 4 or 5 panels high. Each panel is joined with Spantech’s patented rollformed edge connection, a system that requires no bolts, screws or additional bending. An engaging tool is run around the joint to simply clip the panels together.

Skylights, vents and any other penetrations are cut on the ground to minimise the need to work at height.

Panels are lifted with either an overhead spreader bar or an under-slung spreader bar depending on the layout of the site and type of crane used.

Panels are bolted to cleats pre-welded to the edge beam. Once positioned the lift is engaged to the previous panels. The engaging tool is simply pulled over the roof with a rope. Once engaged, the edge-beam bolts are tightened.

Skylights and vents are installed when the roof is completed.

The result is a continuous metal membrane that forms a self supporting curved roof that can be used for a wide variety of applications.

Design Assistance

Spantech profiles are unusual and it may take you some time to get to know how to get the best out of these innovative profiles. So Spantech offers comprehensive design assistance to Architects and Engineers. Contact us for details.