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Continuing Professional Development Building Information Modelling


their business drivers and an increased emphasis on pricing the “out-turn cost” of the project. n Change management becomes a fuller, more considered process allowing long- term lifecycle implications to be considered alongside design and construction impacts. n The project team can simulate the construction sequence to test working methodologies to find the optimal and safest solution. The project can be built any number of times within the virtual environment and used to rehearse the works before they are built for real. The model can be used in the field to plan and monitor progress on site. n BIM enables earlier consideration of off-site prefabrication opportunities. This is resulting in larger, more numerous and complex components being incorporated into projects as prefabricated elements with the associated construction programme and quality benefits. n BIM allows the programme to be more considered and focused on content, logistics and sequencing, which can be virtually tested to find optimal solutions. For example, the model can be used to set up just-in-time delivery schedules of prefabricated and packaged building components. n Collective understanding of design intent, resulting in increased collaboration


across the project team and supply chain. Anecdotal evidence suggests this is supporting a shift in culture by encouraging cross-discipline and cross- tier working. Clients operating in specialist areas


could realise the most significant benefits, particularly those that have significant property portfolios with associated economies of scale, such as universities, schools, hospitals or airports. Point cloud/laser scanning is particularly useful in refurbishment or extension projects where it is important to understand the building from the outset, for example within plant rooms to establish plant locations and services routes. The technology is developing quickly and has already been employed by clients and contractors, including Balfour Beatty, which used 3D laser scanning on the M1 Deansbrook Viaduct to assess the extent of structural damage and determine the scope of repairs. There are also benefits in whole


lifecycle costing. The National Building Specification (NBS) and the Building Cost Information Service (BCIS) are currently developing BIM content and cost data for maintenance and replacement regimens. The data can be embedded into the model allowing, facilities managers to run cost- in-use analyses and establish budgets. Carbon assessments could be undertaken


CPD test paper Building Information Modelling


The CIOB requires members to assess and fulfil their own CPD needs. Members can therefore choose to study the CPD articles published in CM as a valid part of their personal record of CPD activity. To complete the questionnaire printed


below, members should log on to www. construction-manager.co.uk then click on this month’s CPD article. Scroll down to the end


of the article, and you will find a link to the online questionnaire (see example below left) and the five multiple choice questions printed here. Select your answers, fill in your contact details, then click “submit”. If all five questions are answered


correctly, you will be invited to download and print a PDF document confirming your successful completion of the questionnaire. If one or more questions is answered incorrectly, please reread the article and try again, pressing “submit” to resend the amended form. We are no longer able to offer the facility


to send questionnaires by fax or post. Please email any questions regarding this CPD service to cmcpd@atompublishing.co.uk


1. Building Information Modelling can improve: ● Design coordination ● Offsite fabrication ● Cost modelling ● All of the above


2. Balfour Beatty used what to assess damage on the M1 Deansbrook Viaduct: ● 3D laser scanning ● A sonar scanner ● A standard penetration test ● Highways Agency records


3. Which of the following standards involves BIM: ● ISO 29481-1: 2012 ● ISO 29581-1: 2010


● 60% ● 25%


● ISO 29481-3: 2010 ● ISO 29481-1: 2010


4. On Salford’s school building programme, Laing O’Rourke hopes BIM will reduce the construction programme by: ● 70% ● 30%


5. All government projects will have to use Level 2 BIM by: ● 2015 ● 2016


● 2017 ● 2020


32 | MARCH 2012 | CONSTRUCTION MANAGER


in a similar way, giving a full view of the carbon footprint over the lifecycle of the asset. There is potential to capture manufacturers’ maintenance and operational data within a BIM application, from which facilities managers can create interactive digital operations & maintenance (O&M) manuals, which can be used to establish asset and operational management strategies. This is expected to offer the most significant benefit to clients, simply because the on-going maintenance and operational cost of a building over its lifespan represents 80% of the overall expenditure.


Laing O’Rourke’s BIM capability helped secure the contract to build the Leadenhall project for British Land


Delivering the benefits It is important to consider each team member’s contributions and workflow requirements so that the combined effort of all parties aligns with the overall project objectives. For contractors about to embark on a project that features BIM, the following checklist suggests the key challenges to address: n Engage with your client and project team. Work together to determine realistic expectations and commit to using BIM. Keep aspirational objectives in mind as they may influence the content of the model and data gathering protocols. For example, capturing O&M data as the project progresses which can ultimately


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