Add a Lesson Learned

Thermal & Moisture Protection (Div 07)

Coordination of steel structures and exterior wall panels

Facility name: North Florida Regional Medical Center

Project name: NRFLMC-032018M-South Tower Vertical Expansion
Project classification: Hospital – Vertical Expansion
Project type: Acute Care
Project number: 3091600012
Lesson Learned number: 23
Impact: Cost, Schedule, Quality

Lesson Learned/Best Practice

Steel structures must account for exterior wall panels.  The current method of early release package does not allow for a final steel design due to the lag of wall design.

Additional focus on early release package of panels along with steel.  Third party engineering of panels come subsequent to typically buyout of structural steel.

Suggested Actions for Future Projects

Coordinate the ERP package for both steel and exterior panels as early as possible for them to be concurrent.

Ensuring building code requirements are factored into all bid request packages

Facility name: Aventura Hospital & Medical Center

Project name: AVENTU-New Tower
Location: AVENTURA, FL
Project classification: Hospital – Vertical Expansion
Project type: Acute Care
Project number: 3092000015
Lesson Learned number: 20
Impact: Cost, Quality, Scope

Lesson Learned/Best Practice

All projects in Miami-Dade / Broward Counties are required to have the increased impact rating due to the Ultimate Wind speed for these areas in South Florida.  For projects in Miami-Dade / Broward County verify that NOAs provided by the design team meet Risk Category IV / Level E impact rating, for essential facilities, which is 80 fps over the Large Missile Impact rating of 50 fps prior to bidding out project and going to contract.

Suggested Actions for Future Projects

Have design teams update their specifications to clarify that all exterior envelope components below 30ft in elevation are called out to meet the 80 fps impact rating and then all exterior components above 30ft meet Large Missile Impact rating of 50fps.

Actions Taken / Current Status

Next step – refer to Design Team for resolution.

Existing Conditions – fireproofing

Facility name: Brigham City Community Hospital

Project name: BRIGHA-112016P1-ED Renovation
Project classification: Hospital – Renovation
Project type: Acute Care
Project number: 3441000003
Lesson Learned number: 6
Impact: Cost, Schedule, Scope

Lesson Learned/Best Practice

It was discovered that just before we started construction inside the building, we noticed that the entire hospital was not fire proofed. This resulted in design changes, communicating with local AHJ’s and time on pricing up and executing change orders.

In older buildings, it is critical to take the time to review areas that are available to see prior to starting construction.

Suggested Actions for Future Projects

Take the time to look at the existing conditions vs. what is on the plans to ensure they align.

Roofing Membranes

Facility name: Memorial Health UMC Savannah

Project name: MEMSAV-032018M-Children’s Hospital
Location: SAVANNAH, GA
Project classification: Hospital – New & Renovation (Blend)
Project type: Acute Care
Project number: 2696000002
Lesson Learned number: 5
Impact: Quality

Lesson Learned/Best Practice

Per project specifications and approved submittals, standard TPO membrane is to be used on roof curbs and parapet walls, while fleeceback TPO membrane is to be used on all other roofing surfaces. Fleeceback TPO membrane is an ideal application on large, continuous roofs, but the fleeceback only contains a 2″ weldable section on a single side of the membrane for lapping. This constraint produces a considerable amount of double lap stripping on congested roofs, resulting in an non-uniform appearance and introducing the possibility for puddling at these laps. The third floor roof on the Children’s Hospital is especially congested, with a significant amount of tightly packed roof curbs and parapets. Current project specifications do not account for project specific conditions- in this case, an extremely congested roof. 

Suggested Actions for Future Projects

We suggest incorporating standard TPO membrane into design specifications for roofs with a high number of mechanical equipment or roof penetrations.