Construction World September 2016

What are the advantages of the BIM system? • Substantial construction, maintenance, energy saving and lifecycle ownership cost reductions. • Pre-build co-ordination and associated cost and time savings and accuracies down the line. • Reduction of repetitive work by all professional designers involved. • Access to live and pertinent information by all at any time for better early decision making. • Better integrated design across diciplines. • Better understanding of the client’s building requirements. • Clearer communication between design team and client, especially in terms of the consequences of design changes. • Live bills of quantity and cost variation implications, if so required. • Better procurement management and future purchase agreements across single and multiple projects. • And many more – each project demonstrates more advantages to both designers and users.

in the architectural design and can discuss advantages and disadvantages of aspects of the design concept (form following function). What is the level of BIM expertise in SA? We have a high level of expertise placed in a small number of competent people, but these are too few to drive our entire industry. Part of the difficulty is because these individuals are so valuable within organisa- tions, they become very project or company focused and contribute less to driving the BIM industry as a whole. How is BIM measured? Arup has developed a BIM maturity measure- ment application based on work by the Penn State University that anyone can use. It uses a quick and transparent Excel spreadsheet to measure both maturity and progress within a project and in comparison to other projects. It can be completed by project managers or discipline leads with the input of a BIM manager or the BIM lead on the project. This allows each project to set clear goals and measure its progress at each stage. These measurements assess against Arup’s own Phase 1 BIM Targets for all projects and against external benchmarks such as the UK Government’s BIM Level 2 measure. Results can be amalgamated by group, discipline and region and consists of a series of multiple choice questions asked about the project’s information management process and each disciplines’ information modelling practices. The weighted ratings are then measured against criteria aligned with a maturity rating. Can the system be used when renovating an existing building? BIM can be used effectively on existing build- ings. Existing buildings, particularly older ones, often have very little data to start with. We are now able to use BIM with 3D point

cloud image scanning or photogrammetry to create a model based on the existing struc- ture and services. These projects often turn out better than new projects as existing sizes, materials and innate performance defects are usually apparent and more tailored solutions can be found to resolve these historic client issues.

The 15 000 ton bunker comprises of a total 491 precast panels. The project saw an average of 3,2 panels placed per day, peaking at 22 panels on the sloping and vertical wall units. This process was completed without the use of normal scaffolding for access. Rope access teams were deployed to install and complete the majority of the work. This method, in addition to minimising risk by cutting time spent constructing and working from scaffolding, also reduced the installation programme by a third. The precast panels were stitched together and a total of 1 010 m 3 of concrete was used for this. The vertical walls were stitched by means of an in-house designed self-compacting concrete. This self-compacting concrete was used to reduce the safety risk of working with heavy equipment at heights. Stefanutti Stocks Civils Completed a 4 000 and a 15 000 ton precast coal bunker at Kinross, Mpumalanga for Sandvik Mining. PRECAST COAL BUNKER COMPLETED >

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Project safety stats Site team size: 315 Total Hours Completed: 915 225 LTIFR 12 month rolling: 0.15 Injuries over last 12 month: 0.00 RCR 12 month rolling: 0.60

CONSTRUCTION WORLD SEPTEMBER 2016