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Ultra-roof for Global Leadership Academy

Online since 5.03.2017 • Filed under Cover Story • From Issue 20 page(s) 12-13
Ultra-roof for Global Leadership Academy

A recent project in Jeffrey’s Bay by leading supplier, MiTek, our prestigious Cover Story advertiser in To Build 20, is a fine case history of what can be achieved with the supplier’s expertise and products.

When confronted with the challenge of establishing a world-class education facility on a shoe-string budget, roofing truss fabricator, Build IT in Jeffrey’s Bay and associates, had the perfect solution. Build IT Jeffrey’s Bay took on the job just months after opening their truss plant, displaying true prowess and ingenuity in working with wide-span steel structures. Tony Ward, owner of Build IT in Jeffrey’s Bay, has a long association and experience with MiTek and this gave him the advantage in securing this large-scale contract.

Initial planning

The designers thought to specify two 19m hotrolled steel girders to support the three types of trusses, spanning traditionally perpendicular to the supports. However, this solution had constraints and a disadvantage in that hot-rolled girders are not cost effective over such a long clear span. The erection of these girders would have also been impractical due to limited working space on site, involving an expensive crane to lift the heavy weight girders over a long reach.

Subsequent planning and input from MiTek

The recommendation was to span all trusses parallel to the traditional supports, essentially producing enlarged rafter/purlin type trusses. Ultra-Span girders were created at the ends to support short-span trusses to comply with the required minimum ceiling height. This idea was also adopted in the middle section of the roof to act as stability braces for the window panels.

Window panels

Window panels were manufactured with MiTek’s wall framing product to allow for very specific window sizes and to provide flat surfaces for fixing the windows. These window panels are manufactured in several parts to make installation easier.

Preassembled Ultra-Span trusses

In typical large-span, Ultra-Span style, the 19m trusses were preassembled in braced pairs and then lifted into their final position on the roof to ensure fast erection of the roof structure skeleton and enabling other installation works to continue on a stable platform.

Innovative solutions hailed

‘With the design and construction of the new school buildings for Global Leadership Academy in Jeffrey’s Bay, we were confronted with the challenge of establishing a world-class education facility on a shoe-string budget,’ says customer, Stefan Kleyn from the Global Leadership Academy.

‘This required our architect, Jacobus Scott, to come up with innovative solutions. One of the problems was that we wanted a multi-use gathering area, which required an ultra-long span roof design. There was just no other cost-effective option but to make use of the MiTek Ultra-Span system,’ he adds.

‘Brian and the rest of the MiTek team designed and installed a cost-effective solution that not only looks impressive, but also effectively solved many design and engineering problems that we just couldn’t have overcome with a traditional roofing system. We applaud the entire MiTek team, especially Brian for guiding us through this process,’ Kleyn says.

Project parameters
Owner: Stefan Kleyn, Global Leadership Academy
Project: GLA school hall, Jeffrey’s Bay
Fabricator: Build IT, Jeffrey’s Bay – Tony Ward
Architect: Jacobus Scott
Approximate mass: 10 tons
Maximum clear span: 19m
Project duration: Six weeks

MiTek South Africa

T +27 (0)11 237 8700



Issue 20

Issue 20

March 2017

This article was featured on page 12-13 of
To Build Magazine Issue 20.

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