Item No.: 8g_Supp
Meeting Date: March 22, 2022
World Trade Center West (WTCW)
Roof Replacement
Rod Jackson, Capital Project Manager
Susie Archuleta, Real Estate Manager

Action Requested
Construction Request Authorization: $1,815,000
Estimated Total Project Cost: $2,115,000


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PIER 69






PIER 66
PROJECT
LOCATION

World Trade Center West
and Vicinity

Background
69,507 sf 4 story multi-tenant office building. Ballasted
17,000sf Roof system at the end of service life
Tenants: World Trade Center Club, Caf Opla, Columbia
Hospitality, World Affairs Council and Others


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Approach
A Sustainable Evaluation
Framework was used
Balanced Cost with Increased
Energy Efficiency
Installation of a Green Roof
Technology
Overlay existing waterproof
membrane, add insulation, and
reuse of the existing Gravel Ballast

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WTCW Roof Photos of Existing Gravel Ballast and Membrane
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Sustainable Design Strategies Considered
In-kind System            Solar
Inspect insulation and replace        Overlay with new membrane
existing membrane
Install solar
Overlay with new membrane
NOT CARRIED FORWARD
Glare
Green Roof                    Poor Positioning
Roof Structural Capacity Constraints
Overlay with new membrane
Install green roof technology
PREFERRED ALTERNATIVE
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Green Roof Design
Benefits
Innovative / Pilot Project
Heat Island Reduction
Carbon Sequestration
Stormwater Retention
Runoff Temperature
Reduction
Pollinator Habitat
Rooftop Insulation
Aesthetics
WTCW Roof Top Schematic of Gravel Ballast with a Partial Green Roof Technology

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Green Roof Details



WTCW Roof Top Schematic of Gravel Ballast with a Partial Green Roof Technology
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Contracting Method and Schedule
December 2021: Design Authorization
December 2021 ~ March 2022: Design
March 22, 2022: Commission Authorization for Construction Funding
Q2 2022 : Advertise, Award, and Execute Construction Contract
Q3/Q4 2022 : Construction
Q1/2023: In-use date


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Questions?



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