843 N Spring Street

Los Angeles

United States

At 843 N Spring St., CAST CONNEX High Strength Connectors (HSC) provide a crucial element in the realization of a ductile SCBF framing system for this steel-timber hybrid building featuring CLT floor panels.

These standardized, capacity-designed brace end connectors accommodate bolted double-shear connections between round HSS braces and a typical corner gusset plate. By eliminating shear lag in the brace connection and standardizing connection details, the use of the connectors vastly simplifies connection design, significantly speeds erection, and reduces the cost of special inspection---thus complementing the benefits of #prefabrication found in mass timber construction.

What's more? The visually elegant HSCs offer smooth geometric transitions, making it ideal for an AESS application and placing it as a superior aesthetic option to traditionally fabricated seismic-resistant concentrically braced frames (SCBF, OCBF, MD-CBF, or LD-CBF).

Owner: Redcar Properties

Architects: Lever Architecture

Structural Engineers: Glotman Simpson Consulting Engineers

General Contractor: Shawmut

Steel Fabricator: Orange County Erectors, Inc.

Timber Supplier: Mercer Mass Timber

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843 N Spring Street is an award-winning architectural gem that effortlessly adapts to the local landscape. From the New High Street entrance, a charming passageway beckons pedestrians into a lush public plaza adorned with quaint retail spaces.Below, additional retail spaces gracefully line the Spring Street side, while a grand staircase invites pedestrians to ascend as though entering a walled garden. A striking 145,000 square feet of adaptable office and retail areas are characterized by the prominent display of exposed Cross-Laminated Timber (CLT) panels.

The building is made of a hybrid CLT (Cross-Laminated Timber) structure that plays a pivotal role in its endeavor to be a pioneering symbol of sustainability, acting as a carbon sequestration champion, estimated to capture an impressive 1,357 metric tons of carbon. This innovative building also boasts a photovoltaic (PV) array, over 200 bike stalls, and electric vehicle (EV) charging stations, underlining its commitment to eco-friendliness.

Awards:

SEAOSC Structural Engineering Award of Merit (2023)
AIA Los Angeles, Next LA Citation Award
SCDF Design Awards, Honor Awards
LABC Architectural Awards, Under Construction Category

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Elevated design for projects of any budget

CAST CONNEX standardized connectors are available in a range of sizes to fit standard member profiles. These pre-engineered products are affordable enough to be used repetitively or as a one-off. Each connector is designed to simplify fabrication labor, especially in architecturally exposed applications.