Construction World March 2023

Installation of the façade starting; this unitised system was less labour intensive to install and did not require a full façade scaffold for installation. This also reduced cost and time.

The concrete structure on the Ikusasa project progressing with the third floor construction underway.

the concrete structure. These approaches meant Concor unlocked two long lead materials: the glass and façade tiling. The façade itself is a unitised system which is less labour intensive to install, and does not require a full façade scaffold for installation. This also reduced cost and time. Design Innovation Concor worked with Ikusasa’s developer and team of consultants to push the boundaries of sustainable design and construction. The building achieved a 6 Star Green Star SA Office v1.1 Design and a Net Zero Carbon Level 1 Base Building certification. The project is in the process of submitting the targeted 6 Star Green Star SA Office v1.1 As Built and 6 Star Green Star SA Interior v1 As Built Ratings – 6 Star Rating is the highest Green Star rating awarded by the GBCSA. Green Star certification is a national and continental recognised quality mark for the design, construction and operation of buildings, interior fitouts and precincts. The 6 Star accolade is recognised as world leadership demonstrating that environmental impact has been significantly minimised in both the construction process and in the building’s operation. Environmental impact consideration Ikusasa was designed with sustainability features throughout including solar and waterwise sanitary fittings, wet waste composting, recycling and a range of energy efficiency interventions. To earn the Green Star rating, Concor applied a range of processes and features that reduced the building’s environmental impact. Three main requirements had to be met before the project commenced with demolition and construction: a Waste Management Plan (WMP), an Environmental Management Plan (EMP) and a Hazardous Waste Concor applied strict performance strategies to manage water use, energy consumption, process waste and pollution to uphold critical environmental standards. Concor applied a comprehensive EMP on site, in line with its ISO14001 accreditation. It also applied a rigorous WMP, which saw 70% of demolition and construction waste being re-used or recycled rather than going to landfill. To reduce, re-use and recycle as much construction waste as possible, waste was separated at source. Waste recycling storage provided in the basement accommodated paper and cardboard, plastic, glass and cans as well as metals. This ensured that rubble, wood, steel and plastic was sorted into dedicated skips. By preventing contamination between different waste streams, waste could be recycled more cost effectively. Using fewer natural resources The Green Star certification focuses on nine categories of sustainability achievement, from management and materials to the reduction of energy use, water and emissions. In the materials category, the rating rewards developers and contractors for reducing the natural resources used, and for Management Survey on existing buildings. Less water, energy, waste and pollution

The striking new Ikusasa building has added to the overall character and appeal of the Oxford Parks precinct in Rosebank, Johannesburg.

As a fast track project, success was achieved on the Ikusasa project through tight control over scheduling, and by prioritising sustainability and zero harm principles.

Ikusasa’s Green Star SA Net Zero Carbon Level 1 means that the building generates as much energy on site as the base building requires. This includes the use of a photovoltaic solar generation system on the roof.

29 CONSTRUCTION WORLD MARCH 2023