Accurate cost estimates help the complete project team and estimation professionals build a strong project budget. Preconstruction or early design is a significant time enabler that can help project stakeholders gain maximum project value.
Precise cost estimates enable stakeholders including architects, engineers, and builders to gain project confidence, improved cost recognition and better constructability for construction projects. 5D BIM when integrated into 3D BIM models provides accurate and precise information of materials, design elements, layouts thereby estimating construction costs.
5D BIM helps revolutionize construction in the early stages of design. Stakeholders can visualize the project at the initial stages and make informed decisions regarding cost and resources.
5D Cost Estimation is a great tool to connect the dots in the early design for estimators to model buildings based on precise project budgets. 5D BIM is a tool that AEC firms can no longer afford to pass-over due to the host of benefits it offers. In fact, large construction companies are now choosing to outsource their 5D BIM cost estimation requirements to reliable BIM service providers to save on time and costs.
Whilst preliminary dialogues or conversations were crucial to achieving positive project outcomes, they failed to analyze design concepts, schedules, and budgets. Traditional cost estimation posed a serious number of challenges, which lead to a lot of loss and rework.
Challenges of the traditional method of cost estimation
- Time taking and error-prone measurements and quantities from 2D drawings
- Inaccurate cost calculations and underestimation and overestimation of costs
- Volatile material pricing leading to project uncertainties Onsite constraints
- Scale and scope of construction
5D BIM works around challenges to build a strategic function to model and examine material, labor and equipment costs at every project phase.
The integration of 5D BIM in the preconstruction phase allows higher involvement of every stakeholder to shape effective and sustainable spaces. The use of estimation software by firms helps spinout accurate estimates quicker in the assessment stages. Long-term dividends can be leveraged by owners through an exact understanding of what is included in the budget.
Here are some benefits that 5D BIM provides for construction projects during initial stages of construction.
- Better grasp of project scope through visual modeling
5D BIM helps stakeholders visualize the project during the very early stages of design. Any issues or conflicts in design are easily identified and resolved in a three dimensional view, enabling stakeholders to make informed decisions regarding materials and resources.
- Formula-driven costs mapped to materials, equipment, phasing, etc.
5D BIM live links materials costs to Revit models as per pre-defined formulas. This leads to better and precise cost estimates of materials, equipment and phasing. Skilled BIM expertise is required to set the pre-defined formulas.
- Enhanced collaboration to understand design intent, cost-drivers and constructability
Based on accurate coordinated and clash free 3D models, estimators and other stakeholders can leverage better design intent, accurate cost predictions and better constructability during the early stages of design.
- Automated quantity takeoff’s draw accurate cost estimates for improved funding decisions
As the information regarding materials and equipment is always consistent with the design, quantity take offs, material counts and measurements are directly generated from the underlined model. This automation of quantifying allows estimators to focus on other important tasks.
A project management solutions firm in Saudi Arabia needed a clash-free and coordinated 3D model for a healthcare construction project. A LOD 500 model was developed by the team of BIM experts at TrueCADD, based on AIA standards using Revit and Navisworks.
Interdisciplinary clashes were detected and resolved to mitigate rework and risks. Accurate material take-off’s and the clash free model helped the client make informed decisions during the early stages of construction, which reduced rework and helped the client garner higher ROI.
- Evolution of real-time data and parametric models help explore alternative design prototypes
5D BIM automates the entire estimating process by automatically updating costs as per any changes in material quantity or cost etc. This real time- data and parametric models prove to be extremely beneficial as designers and estimators can easily explore alternative design prototypes, leading to better client satisfaction.
Finally, it may be concluded,
5D BIM offers a revolutionary approach to make it easier for project managers to track changes and keep the project running within a planned budget. Of course, building strong connections between back-office and onsite personnel mitigates work silos, promotes fact-based processes, and improves cost predictability. But it is the use of 5D BIM in the preconstruction phase that enables better construction deliverables and outcomes.
5D BIM offers a host of benefits to the construction industry. This is one of reasons that AEC firms worldwide prefer to collaborate with trusted BIM modeling service provider to gain precise and accurate cost estimation services.
Harika Singh is an academician and published writer. Her passion for engineering and technology reflects in the in-depth coverage she provides on technology trends. 20 years of work association with institutes of repute across India and the US positions her to provide valuable insights to business stakeholders on achieving scalability and operational efficiencies through digitalization.