info@pinnacleinfotech.com
+1 713 780 2135
October 28, 2026
Construction projects consist of hundreds of decisions, including the choice of design solutions, the integration of building systems, the development of modeling practices, and technologies for delivery of projects. However, teams may not document the reasons behind these decisions. Problems arise when decisions made at different stages contradict each other. An alternative MEP layout may create problems in terms of structural coordination. The use of an alternative BIM technology may complicate model exchanges. Likewise, contractors may have difficulties in understanding the rationale for the decision made by the design team. ADR, or Architecture Decision Records in BIM, makes it possible to document critical architectural and technical decisions and their context, rationales, alternatives, and implications.
Although the concept of ADRs was originally developed for documentation of software architecture, it can be used in the domain of construction, BIM-enabled design, and project delivery. The record allows capturing the decisions that influence design coordination, information management, constructability, and asset performance. Furthermore, other construction documents complement ADRs. Drawings are used to convey the design intent; specifications outline the technical requirements; BIM models reflect the building information. ADRs provide clear insights into choosing a specific solution.
This guide explores ADRs in construction technology, their benefits, practical application, relevant tools, and industry-driven examples from BIM-enabled projects.
Architecture Decision Record is a short document that records one particular architectural/technical decision and the rationale for making it.
For a construction project, ADR captures decisions by architects, structural engineers, MEP consultants, project managers, contractors, and project owners. Aligned with BIM, these decisions can cover any aspect, such as coordination needs, modeling approach, data exchange process, construction process sequence, or digital handover.
Architecture decision records in BIM help project team members consult on the decision in case of any changes or issues during the construction phase, especially when new consultants come onboard.
The method was popularized by Michael Nygard in his 2011 article “Documenting Architecture Decisions.” This approach focused on writing short and focused documents to keep the rationale behind critical decisions.
The modern construction process involves different disciplines, digital tools, compliance standards, and information exchange protocols. That is why it is necessary for different parties involved in the process to have a tool to document their rationale for decision-making concerning the delivery of the project.
ADR BIM coordination goes beyond detecting clashes in the models of architecture, structure, and MEP. Coordination also includes making agreements on modeling approach, coordination tolerance, model ownership, and dispute resolution mechanism.
ADR documents these decisions and the rationale behind them. Therefore, decision documentation BIM coordination allows BIM coordinators to access and use previous decisions without revisiting old discussions.
The drawings and models demonstrate the design that has been selected. However, it is possible that they do not describe all the options that were available to the team.
It will be useful for an ADR to indicate the reasons behind the selection of a particular structural grid, façade system, ceiling arrangement, or routing of the MEP systems.
Construction companies are increasingly using BIM systems, CDE, Digital Twin technology, and construction management software.
These technologies bring with them decisions about interoperability, information ownership, rights of access, and data exchange.
ADRs record these decisions. They also allow project team members to communicate their reasons for choosing a certain workflow rather than giving instructions informally.
Unrecorded decisions result in different interpretations by designers and builders.
An MEP specialist, for instance, may change the designed coordination because he is unaware of the rationale for reserving a certain ceiling area for future maintenance access.
An ADR will record this rationale and refer the specialist to the design constraints. It will not solve all coordination problems, but it will prevent misunderstandings.
Close collaboration and compliance among clients, designers, specialist subcontractors, contractors, and technology suppliers is important for large-scale projects.
ADRs help teams know what choices were made by the group, the reasons for making those choices, and the impacts they expected to have.
In addition, organizations can apply lessons from past projects to future ones.
Construction projects may require the involvement of various teams throughout the design, construction, installation, and operation phases.
In case there is a change in responsibilities, it is possible that a new set of teams inherits the models but fails to comprehend the previous technical decisions.
By using ADRs, the previous choices made can be traced, enabling the new teams to comprehend the reasoning behind design limitations and changes. This facilitates project handover and makes adoption easy across teams.
Construction teams can apply for ADRs without following an elaborate approval process. All that is necessary is a standard format and clear accountability.
Begin with decisions that involve more than one discipline, project deliverables, technology processes, and asset performance.
Such decisions may include the choice of a coordination model, coordinate system definition, IFC exchange process, or digital delivery method.
ADRs usually don’t cover drafting decisions. The emphasis should be on those decisions that will be costly to undo or will impact other departments.
Provide a description of the problem, project requirements, and constraints that were part of making the decision.
For instance, a hospital project would need to coordinate ceiling spaces for ventilation, electrical installations, medical gases, and maintenance.
The documentation should include design constraints and interested parties. It should also refer to the project requirements and approved technical documents.
Identify the practical options that the team explored.
In case of making a BIM coordination decision, some of the possible options could be federated models, shared models, or discipline-based models exchanged via a CDE.
Assess each option in relation to collaborative needs, performance of the model, limits of responsibility, interoperability, and complexity of the project.
Also, note the reasons behind the team’s rejection of certain significant options. It would assist the future reviewers in analyzing the rationale for this decision.
Involving those who know the implications of making such a decision.
Stakeholders will vary depending on the nature of the project; for example, the main architect, structural engineer, MEP coordinator, BIM coordinator, contractor, client, and facilities management personnel.
Their input can help point out practical limitations that other members may ignore in the process. For example, a design solution that enhances coordination but limits maintenance.
The objective is to make an informed decision after reviewing.
Define the selected approach briefly. Provide justification as to how the approach suits the project needs best.
Identify both the advantages and drawbacks of the selected approach. This can involve additional coordination, software dependency, information exchange, or future maintenance considerations.
If possible, link the ADR to the respective model, specification, coordination report, or accepted minutes of the meeting.
Delegate review responsibilities. The review procedure should conform to the governance and contract obligations of the project.
For example, the BIM manager may suggest a process of coordination; however, this may be approved by the appointed authority of the project.
ADR is not an alternative to design approval and contractual approval. It captures the rationale behind the decision-making within the governance framework of the project.
Store the ADRs at locations accessible to the authorized participants of the project. Each record is linked to all related drawings, models, CDE documentation, and future decisions made.
In case the circumstances change, a new ADR is developed when the team decides to replace an important architectural decision.
The original record is stored, while it is linked to the new one.
Also Read: The Future of Architecture: Modern Architectural Trends and Building Design
Consider a scenario where there is a construction project in a hospital with architectural, structural, mechanical, electrical, and plumbing models.
It is during the process of coordination that conflicts arise from time to time between HVAC ducts, structural beams, cable trays, and plumbing systems. However, the original coordination process is silent on model ownership and the sequence for resolving clashes.
In such a case, BIM manager recommends an ADR for documenting a new coordination strategy.
Title: Establish a Federated BIM Coordination Workflow
Status: Accepted
Context: Various consultants are developing discipline-specific models with inconsistent update timing and coordination processes, leading to inconsistencies when federating models. Furthermore, there is a need for clear responsibility for clash resolution prior to construction.
Alternatives investigated:
To combine all disciplines in one single model.
Separate discipline models, but federate them for coordination.
Manual exchange of discipline models at certain milestones in the project.
Decision: Separate discipline models, but federate them in the coordination environment.
Reasoning: This will provide discipline ownership while giving the opportunity to the BIM coordination team to evaluate building information in a combined model.
Impact: All disciplines will have to meet certain naming, coordination and modeling requirements. There will be a need for establishing schedules for reviews and tracking of issues by the coordination team, but this will establish a clear process for multi-discipline coordination and have a significant impact on the project workflow.
Review criteria: To review and reconsider the process in case of failure in model exchanges, delay in coordination processes, or if the current approach is no longer relevant.
The ADR provides the project team with a documented foundation of its coordination process. The new consultant will be able to comprehend why the team opted to go for the different models per discipline and what is entailed in making that one decision.
Moreover, the team can use this document when considering changing the model ownership or exchange frequency.
This is a practical workflow example rather than a documented result of the project. Teams should measure improvements using coordination metrics like resolution time, recurring conflicts, and model exchange mistakes.
Construction teams have more than one type of project documentation available. Understanding their different purposes prevents duplication.
All these documents complement each other. BEP provides details about the coordination process and ADR explains why the team selected that coordination process.
Architecture Decision Records assist construction experts in recording significant design and technology decisions. The records capture the background, options, reasoning, and implications of decisions that have an impact on the way teams deliver projects. In the case of BIM-assisted construction, ADRs contribute to coordination of the models, their interoperability, information management, and digital handover. They also facilitate knowledge transfer for new team members as well as eliminate unnecessary discussions about past decisions. As opposed to drawings, specifications, and BIM implementation plans, ADRs capture the reason why a team made certain decisions.
ADR means Architecture Decision Record. It is a brief document describing the key architectural decision and its context, alternatives, rationale, and consequences
ADRs help reviewers understand why the team chose a certain design strategy or coordination process. Therefore, this makes future reviewers aware of the rejected strategies that should not be repeated, and any constraints before recommending changes. Nevertheless, ADRs will not minimize rework on their own.
Software such as Confluence, Microsoft SharePoint, and Autodesk Construction Cloud facilitate the documentation and tracking of ADRs. Teams can also use markdown-based options such as MADR.
Not necessarily. ADR is more of an engineering practice than a requirement. Organizations may have their own standards requiring the production of ADR for specific architectural decisions.
Must Read
Grading in Construction: Different Types of Land Grading and Steps to Create a Grading Plan
Digital Design & BIM Engineering for Clients
Architectural Design Services
Architectural BIM Services
The Future of Architecture: Modern Architectural Trends and Building Design
What Is a BIM Manager? Role, Skills, and Career Path
We have received your submission and our team will contact you soon.
Table of Contents