Analysis

How BIM Enabled Clash Detection and Mitigation Reduces Construction Costs?

 

July 14, 2015

BIM Clash Detection & Risk Mitigation is one of the most prudent ways to uncover the clashes between disciplines such as MEP, architectural, structural, etc, and problems arising due to last moment changes and further mitigate them before the project goes on site.

In a perfect project planning and execution scenario, by architects engineers, and contractors, everything goes just as planned, and perfectly fine. However, is there anything as perfect?

Be Prepared For Last Moment Alterations Or Problems Due To Oversight

Last moment changes and additions are bound to happen. A change might seem small, but it can completely alter the outcome that you have predicted. However small; last moment changes leave you no time to re analyze and re-plan, and hence can have cascading effect on each lapse or trade of your project causing a lot of rework and additional expenses. Not only that, it might also lead to higher risk of on-site accidents and hence increased liabilities.

The larger your project, more the chances of last moment changes and oversight, consequently the enormity of rework, expenditure and liabilities also increases. 

As a result it is important to resort to virtual design and construction capabilities for any and every building project. Experts use BIM enabled Clash Detection to further resolve clashes and makes necessary changes in the design and execution plan before the project goes on-site.

Parametric Modeling, Clash Detection And Mitigation

The first step to virtual clash detection is 3d BIM modeling services. Inputs in the form of blue prints, drafts and PDFs are converted into parametric 3D models. These highly detailed and accurate models of MEP systems, structural framework, architecture, and other trades and disciplines need to be integrated into a single ecosystem.

We have often faced problems where the client gives specification sheets and structural drafts with missing details, sometimes side cutting fields are problematic and the dimensions and survey points do not match.  

One such project I can remember of, was for a 6 storied residential inn spread across 10,500 sq feet. Our client wanted us to develop LOD 300 BIM for Architectural, structural and MEP disciplines. We were also further required to detect clashes and mitigate these clashes to have conflict free construction activities on site.

Within a restrained time frame it seemed to be an unachievable task. So we had to work with whatever data we had on hand. At a later stage when missing inputs were made available, on cross verification, it was found that the models that we had prepared based on engineering assumptions were 90% accurate.

Further all the models were checked for individual clashes and they integrated into a single ecosystem to detect interdisciplinary clashes.  A few interferences were detected and immediately the design was rectified. These were left undetected during the manual design process.

However with BIM clash detection they immediately came to the fore and were resolved.  Timely detection helped our client save a lot of money, that would have been wasted if these clashes went on-site undetected.

A thorough BIM documentation with material take offs and construction scheduling also helped our client streamline the project and manage it well once it went on-site. This again added on to the efficiency, productivity and hence the ROI for this project.

BIM Adoption For Clash Free Design

Partnering with an experienced BIM Clash detection service provider, will definitely help you identify several conflicts and interferences that might be overlooked because drafts and 2D designs cannot be analyzed for clashes. Now once you detect the clashes, with BIM, you do not just mitigate them, you mitigate them in the best possible manner.

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