CONTENTS

PRECAST LEVERAGED IN ELITE SPORTS SCHEME

EARLY ENGAGEMENT WITH A LEADING PRECASTER HAS FACILITATED THE DELIVERY OF WESTERN AUSTRALIA’S NEWLY-CONSTRUCTED TRINITY COLLEGE MULTIPURPOSE FACILITY, WRITES NATIONAL PRECAST CEO SARAH BACHMANN.

Located on the Swan River foreshore in East Perth, the multipurpose facility offers students a state-of-the-art waterfront sporting hub and articulates a dramatic southern edge to the college’s campus.

The impressive three storey structure is part of an extensive master plan to upgrade the college’s existing facilities and comprises a double court gymnasium, an assembly expanse, general learning areas, and storage spaces.

From inception, the project’s focus was on reflecting the college’s elite sporting prowess through aesthetically striking architectural design. Precast concrete wall panels, columns, stairs and barrier panels became the favoured option for the building’s form and function requirements.

EARLY ENGAGEMENT WITH PRECASTER – A CRITICAL PHASE

National Precast member Delta Corporation had early project involvement, assisting Parry and Rosenthal

Architects in developing an appropriate precast solution with a mix of white cement and granite aggregate.

Parry and Rosenthal Architects Associate Director, Leon Slattery, says this inception-stage involvement was critical.

“It was important for us to engage early with Delta Corporation in the design and documentation phase of the project. This allowed us to work with them to develop the best solutions for aesthetics and construction methodology.”

Here, details were resolved, a full specification of precast elements was created, and samples were made and approved.“This process allowed the owner to proceed to construction with confidence in the outcome,” Slattery says.

THE PRECAST SOLUTION

A total of 57 precast wall panels were manufactured in a range of sizes, with thicknesses ranging between 150mm and 250mm.

Heights reached up to 1.7 metres, widths spanned up to 4.2 metres and the weight of each unit ranged from 3.25 tonnes to 18.6 tonnes.

Delta General Manager, Jason Walsh, says one of the many benefits of using precast, pertinent in this instance, is the lower permeability of the concrete.

“We used a high strength, low water-to-cement ratio concrete mix, which is ideal for use in coastal locations.”

DESIGN MEETS DURABILITY

Providing access to the building are precast concrete stairs that impress with a sandblasted finish; supporting the structure are 16 precast columns with a honed finish. With the water levels of the Swan River predicted to rise over the next 100 years, the inherent durability of the precast columns will ensure that the building remains intact on the surrounding grounds, which are gradually sinking. In addition, precast’s weather-resistant qualities make it the ideal product for the flood barrier walls.

“It was important for us to engage early with Delta Corporation in the design and documentation phase of the project. This allowed us to work with them to develop the best solutions for aesthetics and construction methodology.”

Leon Slattery, Associate Director – Parry and Rosenthal Architects.

INSTALLATION OF GIANT PROPORTIONS

One of the major challenges the precaster faced was the sheer size of the columns and walls that span the complete height of the building.

“The handling of these units was particularly challenging and required the use of mobile cranes to handle the panels in Delta’s concrete polishing area,” Walsh says.

“Some of the units are polished on all faces, requiring a significant amount of handling and as such, careful positioning of cast-in lifters was critical in terms of both safe handling and aesthetics. As a result, the lifters had to be patched once the panels were installed, which proved quite difficult due to access limitations.”

Trinity College Multi-purpose facility: precast provided design and structural benefits, including a high strength, low permeability profile.

BEAUTY THAT CONNECTS

The facility needed to physically connect the existing built form with the pedestrian circulation on campus through both function and form, and precast concrete proved an exemplary building material to achieve this.

“The precast for the project is both architectural and structural, requiring an incredible amount of attention to detail,” Walsh says.

“The quality and consistency of the finish could not be compromised over what were extremely large areas.”

The architect’s brief included a durable, maintenance-free, high quality finish, and subsequently a crisp white polished and honed concrete was specified.

“The polishing process has exposed the white quartz aggregate specifically sourced for this project, resulting in a subtle contrast between the stone and the concrete matrix which changes during different light conditions.”

“The polished finish is truly beautiful. With a glass-like surface that is extremely easy to maintain, the concrete is resistant to graffiti attack and is easily cleaned without permanently marking the panel.”

The architects are also happy with the end result.

“The quality of the precast in this project is outstanding,” says Parry and Rosenthal Architects’ Leon Slattery. ■

Sarah Bachmann, National Precast CEO


popup top
Click the book icon to navigate
table of contents
popup left
Click here for
previous articles
Click here for
next articles
popup right
swipe left swipe text swipe right
Scroll Down for
Feature article
popup bottom