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BIM Execution Plan

BIM Execution Plan (BEP): Key Elements of a Successful BIM Project

Most of the problems in BIM projects do not come from technology, but from the lack of a clear governance framework. The software can detect a collision, but it cannot define the accessibility for resolving it. A model can contain a large amount of data, but it cannot determine what level of information is really needed at a particular stage of the project. Coordination can identify conflict, but without predefined rules, it cannot ensure an effective decision.

That is why the BIM Execution Plan (BEP) is not an administrative document, but the basis for managing the BIM process.

In many construction projects, a BIM Execution Plan (BEP) is treated as a formal document; it is made at the beginning of the project, approved, and then set aside. In practice, however, a well-structured and actively applied BEP is one of the most important tools for ensuring coordination, data reliability and operational efficiency throughout the project lifecycle. 

Bim Execute Plan alone does not guarantee the success of the project. However, experience shows that an unclear, superficially drafted or poorly coordinated BEP almost always results in problems, subsequent modifications, delays, increased costs and misunderstandings between disciplines.

The key elements of a professionally structured and operationally applicable BEP are defined below – a document that is not made for the form, but for quantitative results.

 

1.Clearly defined BIM goals and applications

Every quality Bim Execute Plan begins with a basic strategic question:

Why is BIM used on this project?

Without clearly defined goals, the model very quickly turns into either an overloaded system with unnecessary details or an insufficiently developed tool that does not meet the real needs of the project. In both cases, it generates an additional cost without real benefit.

BIM objectives must be related to the business interest of the investor, and include:

  • multidisciplinary coordination and collision detection
  • preparation of cost estimates and cost control (5D BIM)
  • construction Site Execution and Logistics Planning (4D BIM)
  • preparation of data for the management and maintenance of the facility
  • increasing project transparency and of decision consistency

A good BEP translates these goals into concrete BIM applications by project phases (conceptual design, main design, detailed design, construction, handover).

Each participant must clearly understand:

  • what information needs to be modeled
  • at what stage of the project
  • and for what purpose it will be used

This strategic clarity prevents unnecessary modeling and ensures that the level of information follows the actual needs of the project.

 

2. Roles, responsibilities and decision-making power

The BIM process involves multiple disciplines and participants, which increases the complexity of coordination. Without a clearly defined system of responsibility, technical problems very quickly grow into organizational problems.

A quality Bim Execute Plan must precisely define:

  • the role of BIM Manager and BIM Coordinator
  • responsibilities of individual disciplines (ARCH / STR / BU / HVAC etc.)
  • model control and approval power
  • initiation and resolution of collisions
  • escalation chain in unresolved conflicts

Without a clearly defined hierarchy and authority, coordination becomes an informal process in which decisions are delayed or made without clear responsibility. The consequence is a waste of time and an increased risk of uncontrolled changes in the later stages of the project.

 

3. Model structure and level of information

The structure of the model must be pre-defined to ensure consistency and interoperability between disciplines.

Bim Execute Plan should be precisely defined:

  • model separation by disciplines
  • the method of segmentation of the model (by floors, zones or systems)
  • common coordinate system and reference points
  • file and model naming rules

The definition of the expected level of development (LOD) and level of information (LOI) by project phase is equally important. It is common practice to develop the model to a high level of detail too early, resulting in overloaded files, difficult coordination, and a false impression of project stability.

The BEP must ensure that the level of modelling is aligned with the project stage and the actual decision-making needs. The model should contain exactly the amount of geometry and data that is functionally appropriate at a given moment.

 

4. Coordination strategy and collision management

Collision detection is a technical tool, but collision management is a process that must be clearly defined.

The BIM Execute Plan must determine:

  • the dynamics of the coordination checks
  • defined tolerance for acceptable conflicts
  • classification of the problem
  • a way of registering and tracking
  • responsible for resolving certain types of collisions

It is especially important to define a hierarchy of disciplines when resolving conflicts. 

For example, load-bearing structural elements generally have priority over installation systems, and main distribution routes over secondary branches. Such rules must be clearly established in order to avoid Ad hoc solutions and unnecessary discussions.

Without a predefined system, coordination is reduced to a subjective assessment, which increases the risk of technical compromises and delays.

 

5. Data Exchange and Common Data Environment (CDE)

The BIM process is based on a controlled exchange of information. Therefore, the BEP must clearly define the rules for data management.

The BIM Execute Plan must define:

  • file formats (native, IFC, COBie, etc.)
  • standards and exchange dynamics
  • rules of appointment
  • revision management
  • approval procedures
  • CDE structure and access rights

A well-organized Common Data Environment (CDE) ensures:

  • work on current and validated models
  • observation of decisions and changes
  • reduction of double work
  • clear participant responsibility

Consistency in data management is not an administrative detail, but the foundation of reliable collaboration. The lack of clear exchange rules leads to work on outdated versions of the model, loss of consistency of changes and reduced responsibility of participants. Consistent data management is a prerequisite for reliable coordination.

 

6. Quality control and model validation

Professional BIM delivery requires systematic quality control integrated into BIM Execute Plan.

This includes:

  • internal checks within the discipline before model exchange
  • interdisciplinary coordination revision
  • automated checks according to defined rules
  • validation of attributes and data completeness
  • compliance with design requirements

Quality control must be structured, and it must not depend on the experience of individuals.

Early error detection significantly reduces the costs of corrections in later stages, especially during performance.

 

7.Change management and BEP maintenance

The project evolves over time – project solutions, investor requirements and technical conditions change. BEP must keep up with these changes.

Quality BEP defines:

  • how to manage changes
  • the person responsible for updating the document
  • versioning system
  • the process of distributing and communaication changes to all project participants

If the BEP does not follow the actual state of the project, it loses its function as a management document and becomes a formal documentation with no operational value.

The BEP should be a living document, not a static PDF. Regular revisions ensure that the BIM strategy is permanently aligned with the real state of the project. 

 

The strategic value of a well-defined BEP

The BIM Execution Plan is the foundation of BIM process management, not an administrative obligation.

Its purpose is to establish a precise framework of accessibility, level of information, coordination and data exchange, in accordance with the principles of the ISO 19650 standard.

When professionally defined and operationally applied, BEP reduces technical and organizational risks, increases the efficiency of interdisciplinary coordination, and provides greater control over the quality and reliability of information. This makes the project more predictable in terms of deadlines, costs and decision-making, which has a direct strategic value for both the project participants and the investor.

Projects with clearly defined BIM rules achieve more stable results than projects that completely depend on technical tools without a structured governance framework.

 

Alfa Therm d.o.o. Mostar

Pouzdanim inženjerskim rješenjima unaprjeđujemo kvalitetu života i stvaramo nasljeđe za buduće generacije.

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