Sacramento Capitol Annex Skylights

From Design to Fabrication

Overview

Abstract

This article documents the development or the design of two skylights on the Sacramento Capitol Annex Project throughout Design Assist and sheds light on the essential collaboration between Architects and Facades Contractors to generate filigrane glass skylights solutions which would not have been made possible under a linear Design Bid Build delivery process.


Authors

Photo of Sophie Pennetier

Sophie Pennetier

Associate Director

Enclos

spennetier@enclos.com

Photo of Houston Drum

Houston Drum

Associate Principal

SOM


Keywords

Paper content

1 - Introduction

Almost all 50 states in the U.S. have state capitol buildings that feature a capitol dome and rotunda, which is seen as the most important architectural symbol

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Acknowledgements

7 - Acknowledgements

SOM would like to first and foremost thank and acknowledge the ownership team: The Joint Rules Committee of the California State Legislature, and MOCA Systems, for their trust in the fluidity of the design process and expertise of the design and fabrication teams. Ultimately it was their given guiding principles of “The People’s House” and “Daylight”, and their passion to inspire the public citizens of California and include the people in the democratic process of our government, that enabled the design team to conceive of the interior public spaces as they are, dignifying and enhancing the connections between the people, and the history and symbols of our State.

A special acknowledgement should be made to the SOM Structural Engineering team (Mark Sarkisian, Eric Long, Alessandro Beghini, Kevin Chang, Daniel Koroski, Yanhong Liu and Xiaochen Liu), for their invaluable insight, and “pushing” the architecture team to be more thoughtful and inventive for the main skylight. Their ingenuity and passion continue to inspire us daily to be more thoughtful and adventurous architects and designers.

The authors would also like to thank the key individuals from the SOM Architecture team who made this possible: Craig Hartman, Keith Boswell, Jose Palacios, Jed Zimmerman, Kye Archuleta, John Martin, Kristin Akin-Zimmerman, Michelle McNeil and Roshanak Mostaghim for their leadership, passion, and commitment to design and detailing excellence.

A special thank you to Jacob Gwisdala with Turner Construction (the CMAR), who was instrumental in facilitating the open collaboration between SOM and Coalition. It often gets overlooked how much impact the CMAR has on the Design Assist process, in allowing the team to explore design options, understanding how critical the skylights were.

The design team’s subconsultants should be recognized for their critical role: HLB (for daylighting and glare simulations), Glumac (for thermal energy modeling), Capital Engineering & The Electrical Enterprise (for assisting the team with fire sprinkler and beam detection strategies), CS Caulkins (for maintenance access strategies), and Jensen Hughes (who was instrumental in helping SOM work with the Authorities to find creative ways of achieving fire/life safety compliance without impacting the views to the historic dome). The authors would also like to thank RDWI for their work and expertise on the wind tunnel analysis.

Coalition thanks all our detail-oriented clients, colleagues and suppliers. A project of this caliber would not have been possible without our diligent world-class suppliers and a comprehensive Design Team, Client and GC. For more information, please visit the Coalition website.