BIM Collaboration

28 Apr

Coordination guidelines

This content is published to provide advance information to parties collaborating with TKA

This approach considers the modeled information to be the primary source of truth; therefore, it is expected that content contributed by consultants follow this same logic:


Two-dimensional documentation is to be extracted from the 3D model – the 3D model is NOT to be generated as a parallel effort to 2D drawings.


In general, all content that is depicted on document deliverables according to the acceptable standard of care is to be modeled in an agreed BIM platforms documented in a Project Execution Plan or BxP. For design development and construction documents, modeled elements are to be created to a design level of detail – either generic [LOD200] or specific [LOD300], depending on the requirements of the project.



Consultants are expected to share BIM data with TKA and other members of the design team. Models must be uploaded to a project collaboration system on an agreed schedule, set forth in the BxP.

Naming of models will not change during the project lifecyle. (Versions will update through the transferring system)


Model Element Authoring Table

The Model Element Authoring Table (MEA) is a more detailed specification of the modeling responsibilities throughout a project team. In other words, who will model what, and when. This will become a critical roadmap by which to measure each team member’s compliance with the modeling plan.


More information about level of development can be found in the LOD Specification BIMForum 2013


LOD100 “Estimate it.”

LOD200 “Specify it.”

LOD300 “Bid it.”

LOD350 “Buy it.”

LOD400 “Build it.”

LOD500 “Operate/maintain it.”

Model-Based (3D) Coordination

At specific project stages (depending on the details of the BxP), it will be the responsibility of a multi-discipline firm to be self-coordinated BEFORE transmitting the models to the team. For example, mechanical, electrical and plumbing models being prepared by one engineering firm must be coordinated with each other before integration with the architecture and structure models.

Sub consultants using Revit will be responsible for creating a Navisworks export, to be delivered with the original Revit files, according to the collaboration schedule set forth in the BxP. This requirement ensures that the Sub consultant retains responsibility for the model content exchanged from one platform to another.

Template clash tests


TKA team has developed a series of template interference tests in Navisworks to facilitate 3D Coordination during design phases. 

Within the BxP template, the design team will agree to the clash tests to be conducted during the design phases. This will set the expectations for any other recipient of the design models, such as the builder or client. 

HOK BIM Solutions: BIM Collaboration.

Clash Resolution

It is the responsibility of the Architect to supervise the 3D Coordination process; however, each Sub consultant must participate in the resolution of clashes in order to achieve the stated quality control goals of the project.

In addition to participation in inter-disciplinary clash resolution, Subconsultants are responsible for performing self-checks (intra-discipline) on model content BEFORE the models are distributed to the team. This means that there should be no interference clashes in testing structure versus structure; and HVAC versus HVAC; and so on.



Collaboration Technology

TKA employs several technologies to support an advanced level of collaboration with our extended design teams as well the owners and builders to whom we provide services.


TKA’s enterprise solution for web-based conferencing is WebEx by Cisco. Project meetings can be conducted with many constituents with the options to use toll free phone access or the microphone and headset connected to the computer. Meetings can be recorded for future reference and played back with a free player available from the WebEx website.


Newforma Project Center

TKA utilizes Newforma Project Center and InfoExchange for all project management and collaboration. All design data artifacts are transmitted via the TKA InfoExchange site. 
If your firm also utilizes Newforma Project Center, there may be opportunities to streamline the connection with an TKA project team via automatically synchronized project folders. Please contact the TKA IT Department  for more information.

Citrix XenApp


TKA’s major projects maintain hardware that supports Citrix XenApp – a system that offers extended design team members on-demand secure access to enterprise applications. This tool eliminates the need to send large design files over the Internet. Instead, remote users can run software such as Revit via a web-browser without ever moving a file off the project server.

While this platform is not used on every project, it has proven to be extremely effective on large projects with design team members in various remote locations.


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