From the perspective of BIM as a model, it offers two significant advantages:
1. The model integrates information from various stages and specialties throughout the entire lifecycle of the building.
2. It serves as a platform that supports collaboration among multiple professions and individuals.
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### What Are the Challenges with Engineering Costs and BIM?
First, we must recognize that the emergence of computers and the Internet has fundamentally changed how people work and think. If a new technology is revolutionary, it usually changes the mindset and workflows of those involved.
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### How Do Cost Engineers Work Now?
– They rely on drawings and manual measurements.
– They use computers primarily for calculation and processing power.
– There is a shift from purely digital cost thinking toward model-based cost thinking.
Currently, the workflow looks like this:
1. **Feasibility Stage:** Select historical indicator data and feasibility study reports from an indicator library for project estimation.
2. **Design Phase:** Obtain a design estimate using preliminary construction drawings.
3. **Bidding Stage:** Use detailed CAD drawings to import into quantity calculation software, calculate quantities and prices separately, and generate the construction drawing budget.
4. **Construction Phase:** Record changes, price differences, and claims. Adjust budgets to calculate settlement and final accounts.
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### How Does This Change After BIM Is Implemented?
1. During the design phase, a standard building model is established.
2. In the bidding stage, cost engineers input project cost information into the model to obtain quantities and costs, generating the construction drawing budget directly from the model.
3. During construction, settlement, final cost, and actual indicator information are obtained by maintaining the model data.
4. After project completion, standard components in the model can be saved into an indicator model library for future reuse and reference in similar projects.
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### Feeling Replaced Yet?
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### Transformation of Work Mode: From Single-Software, Single-Discipline to Multi-User Collaborative Platforms
**Current Work Mode:**
1. Excel is the primary tool for estimation and budgeting.
2. Quantity and cost calculation software is used only during the bidding stage, making construction drawing budgeting inconvenient.
3. There is no unified platform; cost professionals work mostly in isolation, often importing and exporting models between software or even modeling separately.
4. Issues must be documented and confirmed through other communication channels, which is highly inefficient.
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**After BIM Implementation:**
1. Building models based on BIM appear as collaborative platforms.
2. Cost information from multiple disciplines is integrated into a single platform.
3. Cost engineers input their professional cost data directly into this platform.
4. Issues and records are communicated within the platform based on the model.
5. This reduces repetitive modeling, streamlines communication, and speeds up problem resolution.
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