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Mass Timber B
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Mass Timber B

XL is leading the design-build team for a mass timber office building, events space, and fitness center and a 1,300-space parking garage.

Location

Confidential

Client

Confidential

Architect

SERA Architects, RMW Architecture & Interiors, and Michael Green Architecture

Size

Confidential

Value

Confidential

Market Sector

Commercial

Delivery Method

Progressive Design-Build

Attributes

  • Mass Timber

Certifications

  • LEED Platinum Certification

XL Construction continues to expand its expertise with innovative sustainable design and construction as it leads this client’s second mass timber project that includes a large-scale mass timber office. Honoring the client’s environmental stewardship goal, XL and its design-build partners designed to LEED Platinum certification standards. The project includes, a 6-story mass timber office building, a beacon events center, a health and fitness center and a 1,300-stall structural precast concrete parking structure designed to partially convert into office and retail space, should parking needs trend lower in the future. The project team designed the core and shell of the mass timber building to allow maximum flexibility for interior spaces as well, enabling the facility to be a fluid model for post-COVID work styles. XL is also overseeing the design of the sitework, landscape, and outdoor amenities, to include bio retention for stormwater runoff, fitness courts and facilities, and a food truck courtyard. Construction started in September 2021.

Challenges and Solutions

01 / 02
Challenge
Mass timber buildings that are designed to have the timber fully exposed are limited by the California Building Code (CBC) to a maximum height of 85 feet. The office building on this campus, designed as a six-story building with intention of a fully exposed timber structure, needed to limit the height of each floor to support the six-story design and stay within the 85-foot height limit.

Solution

The challenge of the shorter floor-to-floor height was mitigated through the unique use of composite beams laid flat in lieu of standard deeper beams. This provided a higher clear height to the underside of the beam structure and allowed for clearer sight lines within the interior space.

Challenge
Obtaining City approval of the Core and Shell and Tenant Improvement drawings separately would add waste in terms of design, materials, labor, and time.

Solution

Because the developer, design team, and contractor were the same team, the City was comfortable reevaluating the core and shell design, which incorporated the tenant improvement design with major modifications to general sheets, CalGreen, and Title 24. Our team’s diligence working with the City of Sunnyvale made them more comfortable approving C&S and TI drawings together and set a precedent for the same to be done in the future. This approach eliminated a tremendous amount of waste, saving the client at least one year and millions of dollars on labor and materials.

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