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BIM implementation waste is usually a process problem before it is a software problem. Teams lose time when decisions disappear during staff changes, coordination meetings drift, concepts are modeled twice, files become unwieldy, or nobody owns the standards. The seven controls below—drawn from practitioner guidance published by David Barista’s 2014 BD+C feature—focus on deciding what information a project needs, who is responsible for it, and when it must be exchanged. They remain useful for construction teams, but the source is historical advice rather than a current software comparison or a measured guarantee of savings.
What does waste in BIM implementation look like?
Waste is any BIM effort that consumes people’s time, computing capacity or coordination attention without supporting a defined project decision, deliverable or handover requirement. It can be obvious, such as rebuilding a concept in a detailed authoring model, or hidden, such as searching for the reasoning behind a changed wall assembly months after the original designer has left.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchThe FM-BIM Mobilisation Framework describes related avoidable work as late variations, wasted materials and staff time, and time spent looking for information. Its remedies—reviewing designs before construction and planning information handover—fit the same principle: prevent rework by deciding earlier what must be known and retained.
How can a team preserve project knowledge when people change roles?
Keep the reasoning behind decisions with the project, not only in an individual’s memory or inbox. A model may show the final geometry while omitting why an option was rejected, which assumption drove an analysis, or who must be consulted before a change.
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- Record decision context at the point of approval. For each significant design, sequencing or constructability decision, capture the issue, options considered, selected option, assumptions, responsible person, date and affected model elements or documents.
- Use a controlled decision log. Give each entry an identifier and status such as proposed, approved, superseded or closed. Link it to the relevant view, issue, drawing revision or meeting action rather than relying on a free-text note.
- Make handoffs explicit. When work moves from design to documentation, procurement or construction administration, name the receiving role, required information and acceptance date. A short handover checklist is more reliable than assuming the next team will infer intent from the model.
- Archive superseded reasoning. Do not delete rejected options or old decisions without a trace. Mark them as superseded so a later team can distinguish an intentional change from an accidental omission.
This does not require a particular platform. A project information management system, issue register or structured spreadsheet can work if naming, permissions, revision control and retention rules are clear. The goal is continuity when staff move between design, documentation and construction administration—not a larger model.
How should a BIM coordination meeting be prepared?
A productive coordination meeting starts before participants join. Prepare the model views, the agenda and the previous actions so the session can resolve defined interfaces instead of becoming a live search through every discipline.
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- Preload the views. Open the saved plans, sections, 3D views, filters and visibility settings needed for the issues on the agenda. Confirm that linked models and references display correctly before the meeting.
- Assign a model navigator. One capable person should control navigation, isolate elements, switch views and record the evidence shown. This prevents several attendees from trying to drive the model while nobody facilitates the decision.
- Limit the scope. A session may focus on one discipline interface, building zone, system or component. Invite only the people who can explain, decide or accept the affected work; broad attendance is not a substitute for a defined question.
- Carry actions forward. Begin with unresolved actions from the previous meeting. Each new action needs an owner, due date, affected location or element and a definition of done.
- Publish the outcome promptly. Issue the decision and action record with links to the relevant views or issue numbers. If the decision changes the model, state who updates it and when the revised information will be available.
One practitioner account in the 2014 feature associated an early commitment to weekly coordination sessions with few RFIs and few significant field coordination issues. That is an anecdote, not a measured industry result; use the practice because it creates a feedback loop, not because it promises a particular RFI reduction.
How do you avoid double modeling during early design?
Do not rush every idea into a detailed BIM model. Test alternatives with the simplest method that can answer the immediate question, then invest in detailed geometry when the concept is sufficiently stable and the model has a defined use.
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A useful progression is:
- Frame the decision. Is the team testing massing, daylight, circulation, structural feasibility, cost, sequencing or an interface? Different questions require different levels of information.
- Choose a light study method. Hand sketches, physical study models or simple digital studies can expose proportion, access and adjacency issues without creating a fully attributed building model.
- Set a transition gate. Agree what must be true before the concept is rebuilt in the project BIM environment—for example, an approved option, confirmed grid, agreed scope and named analysis requirements.
- Reuse what is worth keeping. Transfer validated dimensions, assumptions and decisions into the authoring model, but do not preserve exploratory geometry merely because it already exists.
The source feature recounts one practitioner spending “40 hours or more” building three conceptual models in SketchUp. That is an individual example, not a benchmark. Its lesson is to challenge whether a detailed conceptual model is earning its cost before starting it.
How can you map the process before modeling?
Write the information workflow first: decisions, analyses, exchanges and deliverables. Modeling then becomes a response to a known need rather than an open-ended attempt to represent everything.
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| Process question | What to define | Model consequence |
|---|---|---|
| What decision is pending? | Decision owner, deadline and alternatives | Only the geometry and data needed to compare those alternatives |
| What analysis is required? | Method, inputs, tolerances and output format | Elements must carry the properties and relationships the analysis consumes |
| Who receives information? | Role, exchange date and acceptance criteria | Views, schedules, exports or reports are prepared for that recipient |
| What must be handed over? | Asset data, naming, classification, location and verification requirements | Information is structured early instead of reconstructed at closeout |
Turn the map into a short requirements register. For each use, state the minimum geometry, attributes, source, responsible author and verification method. If a proposed element does not support a listed use, defer it or omit it. Review the register at project gates because requirements can change; uncontrolled additions are a common route to model bloat.
How should you manage model size and organization?
Keep the model navigable and proportionate to its uses. Separate logical building areas or systems when that improves performance, ownership or coordination, but do not split files merely because a smaller file sounds better.
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Decide the organization early by asking:
- Can teams work independently on identifiable zones or systems?
- Will separate files reduce navigation and loading time without hiding interfaces?
- How will shared coordinates, grids, levels, naming and revisions remain consistent?
- Which references must be visible together for coordination and review?
- Who publishes, validates and assembles the federated view?
Also control object complexity. Avoid unnecessarily detailed or duplicated families, excessive nested geometry and data fields that no approved use consumes. Use a clear naming convention, purge obsolete content under a controlled procedure, and review warnings, broken links and unused views at agreed milestones. These are governance actions, not a claim that a particular computer-cleanup product will improve BIM performance.
There is no universal answer of “one central model” or “many models.” The appropriate arrangement depends on building size, disciplines, interfaces, permissions, exchange frequency and the team’s coordination method. Document the chosen arrangement in the execution plan and test the exchange path on a small representative area before committing the whole project.
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Assign a named owner with authority to maintain the company standard, approve exceptions and communicate changes. Without ownership, templates, naming rules and workflows drift between projects and staff create local workarounds.
The owner’s responsibilities should include:
- Maintaining templates, content libraries, naming and classification rules.
- Publishing a change log when tools, exchanges or workflows are updated.
- Reviewing proposed exceptions and recording why they are necessary.
- Providing short training or examples for project teams.
- Collecting recurring issues from coordination meetings and feeding improvements back into the standard.
- Checking that the standard remains compatible with contractual information requirements and the project execution plan.
The 2014 feature quotes architect Adam Lasota: “These tools are constantly evolving, and the company standard needs to evolve with them.” Treat that as a governance requirement, not an invitation to change methods casually. Version the standard, set an effective date and state which projects are covered. A stable baseline plus controlled updates is less wasteful than constant informal reinvention.
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What belongs in a BIM execution plan?
A BIM execution plan (BEP) turns expectations into an operating agreement. It should state schedules, roles, model sharing and level of development, then be followed and updated when the project changes.
At minimum, define:
- Objectives and uses: the decisions, analyses, coordination, documentation and handover outcomes the models must support.
- Responsibilities: authors, coordinators, reviewers, information managers, approvers and escalation contacts.
- Schedule: model production dates, coordination cycles, review gates, exchange milestones and issue closeout deadlines.
- Model structure: file breakdown, coordinates, origins, levels, naming, worksharing or reference rules and federation method.
- Information requirements: geometry, attributes, classifications, level of development or equivalent maturity expectations for each milestone.
- Exchange controls: file formats, transmittal conventions, revision status, permissions, validation checks and acceptance criteria.
- Meeting protocol: agenda, attendees, navigator, issue numbering, action ownership and publication timing.
- Handover: asset data, verification, required formats, responsible parties and how final information will be maintained.
Use the BEP as a living control document. Review it at mobilization, before major design packages, before construction release and before handover. Changes should show what changed, why, who approved it and which downstream models or deliverables are affected. A plan that exists only at tender stage cannot control later work.
How do you choose which waste-control to apply first?
Start with the waste that is already visible, then address the upstream cause. Use this quick decision path:
| Symptom | First control | Evidence to review |
|---|---|---|
| People repeat questions after staff changes | Decision log and handover records | Unresolved issues, approvals and superseded options |
| Meetings run long without decisions | Prepared views, scoped agenda and action register | Previous minutes, attendance and open actions |
| Concepts are rebuilt several times | Early-design transition gate | Study outputs and criteria for entering detailed BIM |
| Models are slow or difficult to navigate | Model-organization and object-complexity review | File breakdown, linked references, views and family content |
| Teams use conflicting methods | Named standard owner and versioned standard | Templates, exceptions and change history |
| Deliverables arrive late or in the wrong form | Requirements register and BEP exchange schedule | Milestones, acceptance criteria and transmittals |
How were these seven controls selected?
The selection follows the practitioner recommendations in the 2014 BD+C feature and the FM-BIM framework’s emphasis on avoiding abortive work, reviewing designs before construction and planning information handover. Each control addresses a different waste source—lost context, unfocused coordination, duplicate modeling, undefined requirements, oversized models, unmanaged standards or unclear delivery expectations. The evidence is qualitative and historical; it does not establish current software capabilities, jurisdiction-specific requirements or a guaranteed return on investment.
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What should a construction team do next?
Choose one live project and run a short implementation workshop. Confirm the project’s BIM uses, create a decision and action log, map the next information exchanges, nominate the standard owner and draft the missing BEP sections. Then review one coordination cycle and one model handoff against those controls. Small, visible corrections usually expose where the larger process is generating rework.
Finally, verify current contractual, safety, information-management and jurisdictional requirements with the project’s appointing parties and relevant standards bodies. The source material is a 2014 practice feature, so its principles should be adapted—not treated as a current compliance guide or proof that any single workflow will deliver a fixed saving.
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Can a BIM execution plan be created after modeling has started?
Yes, but it becomes a recovery exercise rather than a preventive control. Document the models, roles, exchanges and assumptions already in use, identify conflicts, and issue a dated baseline before the next major coordination milestone.
What is the difference between a decision log and an issue log?
An issue log tracks a problem or question that needs action; a decision log records the approved resolution and its reasoning. Link them so a closed issue points to the decision that changed a model, drawing or requirement.
How often should a BIM standard be reviewed?
Review it at project mobilization and after significant tool, contract or exchange changes, then schedule a periodic review based on project volume. Publish revisions with an effective date and a transition rule for projects already underway.
What information should be checked before BIM handover?
Check that required assets are present, uniquely identified, located correctly, linked to the accepted documents, and supplied in the agreed format and revision status. The receiving party should sign off against explicit acceptance criteria rather than simply receiving a model file.
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