The project features a two-story office block and a mezzanine office within the warehouse. The warehouse was designed for dolomitic conditions with a post-tensioned surface bed (FM2 finish). The warehouse steel structure consists of 3 girder trusses with a 32m span that supports a total of 27 portal trusses spanning 32m each. The average span for the purlins was 8m. The warehouse is roughly estimated at 28000 m² (excluding canopy area) with a total tonnage of 630t. The steel rate of the warehouse is 22.5kg/m2.

The steel structure was divided into 3 phases. The spring height for the warehouse is approximately 13.5m high. The portals are supported by reinforced concrete columns extending 12m above the surface bed with 305x165x40 Universal Beams which range between 3 and 7m in height.

The challenges faced during the erection of the steel structure were mostly natural causes such as rain and wind that made working conditions difficult and thorough safety precautions were adhered to

What is the purpose of the structure/ project?

Distribution warehouse

Was the project envisaged in steel from the start? If not – why was it built in steel in the end?

Yes

Give a brief description of the structural framing. What type of sections were used (e.g. hollow, cellular, I beams etc) and why?

The steel structure is a combination of I-sections, angles, hollow sections, cold formed sections, METSEC Z & C sections, T- sections. All these different sections were used for their different qualities to ensure the structural integrity of the large warehouse was met.

Were there any challenges in the fabrication of the project from the engineer’s design – if yes, please tell? Tell more about fabrication and erection process if it was complex, difficult, innovative etc.

The structural engineer made use of the lightest structural members without compromising the aesthetic and function required by the Architect and Client.

5What is special/ unusual/ innovative/ aesthetic about the steelwork in this project?

In terms of architectural – horizontal and diagonal steps were created to form shadow lines within the façade to break down the big-box aesthetic.

STRUCTURAL STEELWORK
Completion date of full project 30 April 2018
Tons of structural steel used 630 Tonnes
Structural profiles used I-sections, angles, hollow sections, cold formed sections, METSEC Z & C sections, T- sections
CLADDING
Cladding profile/ type used Craft-lock
Cladding area/ coverage and tonnage 30 000 sqm Craft-lock roof 

Colourplus® material 0.55 Deep Ocean

10 000 sqm IBR Side cladding

PROJECT TEAM COMPANY
Nominator Clotan Steel
Client/ Developer Fortress Property Fund
Architect ICM Architecture
Structural Engineer Sotiralis Consulting Engineers
Quantity Surveyor Quanticost Quantity Surveyors
Main Contractor Archstone Construction
Steelwork Contractor SE Steel
Cladding Manufacturer Clotan Steel Pty Ltd
Cladding Supplier Clotan Steel Pty Ltd
Cladding Contractor GM Roofing