SECTION M: COORDINATION SIGN-OFF PROCESS

Tag Process

Not everything is solved with clash detection. Complete reliance on that tool underutilizes the power of the coordination software and may cause rework in the field. To minimize this, the McCarthy VDC Manager and/or Project Engineer will perform visual Constructability Reviews of the federated coordination model each week to identify items “beyond the clash”. These are items related to things like, fire rating issues with multiple penetrations, pipes out of walls, code issues, access issues for installation and maintenance, or potential clashes for content that has not been bought out or is not in the model. Every Trade Contractor is responsible for reviewing his/her folders prior to the scheduled coordination meetings. If an item cannot be resolved at the coordination meeting then that issue needs to be drafted onto the Design Issues Log or an RFI. See the example of Review Folders to the right:

Trade/System Colors

While Trade Contractors can use their standards established by their firm, we will establish a Navisworks Appearance Profiler Color Scheme for each trade system and other model systems in order to facilitate effective 3D Trade Coordination. The Appearance Profiler color settings will be determined in the initial BIM Kickoff Meeting.

Typical Corridor Construction Template

It is important to establish typical “fly zones” for installation of work. This creates a proactive efficient process not only for modeling but also for the lifecycle cost of the building. The McCarthy VDC Manager and Project Manager will review the Typical Corridor Construction Template with the team at the BIM Kickoff to determine the approach to hierarchy and placement of building systems pathways. Depending on the team’s knowledge of the documents and scope of work, the template can be agreed to at the BIM Kickoff or agreed to after the BIM Kickoff but prior to creation of overhead model content.

See examples below:

SECTION M: COORDINATION SIGN-OFF PROCESS

1. Area/Model Signoff: We will conduct a “Substantial Sign-off Process” when all coordination team members are satisfied that coordination conflicts have been adequately resolved for the Engineer Review process to occur. All trade contractors involved in the coordination process shall sign McCarthy’s standard 3D Trade Coordination

Sign-off Sheet for each completed coordination area. 2. A “BIM Fly-thru Meeting” will be scheduled with the Engineering Team and Owner to review the sign-off models in Navisworks for conformance to design-intent, maintenance accessibility and serviceability. 3. Post-Meeting, Trade Contractors will submit Coordination Drawings for Engineer Review. 4. During and post-Engineer Review Process, Trade Contractors must address any/all comments returned both in

PDF format and Model format prior to the start of pre-fabrication. Formal written documentation must be captured for all Engineer Review comments stating the comments have been addressed and satisfy the needs of the

Construction Documents. 5. If the trade contractor is utilizing pre-fabrication, the trade contractor must receive coordination drawing approval or approval from McCarthy in writing prior to any pre-fabrication to prevent rework or installation of non-compliant work. Authorized representatives are to be designated by each trade contractor and approved by McCarthy.

Post-3D coordination signoff, each trade contractor is required to bring physical drawings to be signed by all other coordination team members. Each trade contractor is responsible for reproduction costs associated with production of hard copy drawings for sign-off.

BUILDING INFORMATION MODELING EXECUTION PLAN (BEXP)

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6. Sign-off of the 2D drawings extracted from the coordinated model shall signify the trade contractor’s intention to complete installation as indicated on the coordination drawing. Each trade contractor shall be responsible for locating their respective components as shown on the 3D model and field installation drawings. Field installation conflicts will be resolved by the affected party at the direction of McCarthy with no additional cost to McCarthy or the Owner. The signed documents will remain in McCarthy’s possession. 7. Each trade contractor will provide all other parties involved in the coordination process a copy of their completed documents. This can either be a hard or digital copy, depending on which type is preferred by each trade contractor. 8. Each trade contractor shall submit one copy of each of their respective coordination drawings to the Engineer for review and approval. 9. Trade Detail Coordination Drawing Submission Protocol for Engineer Review: Step 1: Coordination Reaches “Substantial Sign-off for Model Conflicts” Step 2: BIM Fly-thru Meeting with Owner and Engineer to review Model Step 3: Trades produce first pass Detailed Coordination Drawings for Engineer Review Step 4: Bluebeam Studio Session for collaborative O/E/C Review of Trade Drawings Step 5: McCarthy & Trades address comments, revise Models/Drawings Step 6: Resubmit any Drawings for Record, revise Models and re-run for Conflicts Step 7: Final Sign-off / Begin Fabrication & Install Process

Example Sign-off Sheet:

BUILDING INFORMATION MODELING EXECUTION PLAN (BEXP)

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