Three Cross-Laminated Timber (CLT) Residential Projects with oWOW


1510 Webster Street


960 Howard Street


316 12th Street












CSDA Acoustics and oWOW are actively designing multi-use buildings that provide flexible design, are sustainable, and can be built quickly. This is possible by using the Cross-Laminated Timber (CLT) type of construction.

“What is CLT?”
CLT are layers of glued lumber. Each layer is oriented to each other at 90 degrees. The alternating orientation of each layer makes the CLT able to handle higher structural loads; less material can hold more weight. The use of CLT results in less building material and less waste.

“Where are the Projects?”
All three mixed-use projects are in California’s Bay Area: 960 Howard Street (San Francisco), 1510 Webster Street (Oakland), and 316 12th Street (Oakland). The projects are a mix of commercial, retail, office, and residential spaces.

“Why is CLT important?”
CLT has advantages when compared to other building materials, including:
1. Pre-fabrication off-site
2. Lower cost than concrete/steel structures
3. Greater sustainability as compared to traditional mid- to high-rise structural systems.

Using CLT, oWOW has developed two products upon which CSDA has performed mock-up testing, analysis, and design services to determine the acoustical performance. The MacroUnit is a mass-produced and replicable kit of parts, that will be flat-packed and assembled onsite. This includes pre-fabricated bathroom pods and the Magic Walls system, which has de-mountable partitions that can transform the space from 1 to 4 bedrooms. The oDECK is a strategy to vertically-phase a high-rise. A concrete Type I structure is first designed and can then support future additions of MacroUnits as construction progresses.

By utilizing oWOW’s technologies, affordable homes can be made available within 2 years of site purchase, versus waiting 5 years in the normal development process just to break ground.

Mainland Campus Project-Based Learning Pods’ Outstanding Project Award

​CSDA’s Mainland Campus Project-Based Learning Pods project received an Outstanding Mention Award in the Learning by Design’ Spring 2020 magazine, Architectural Awards Showcase.

Learning by Design is a prestigious magazine that publishes and recognizes the nation’s architectural, engineering and design firms for outstanding pre-K to 12 and college/university projects. The award-winning publication reaches out to more than 50,000 leaders at all levels of education.

The jury, a selection of architects and educational facility planners, reviews all entries and identifies the top projects to receive Grand Prize Awards, Citations of Excellence, and Honorable Mentions for both pre-K to 12 and university projects in each edition.

Please click here to access the link to the Learning By Design magazine, spring edition.

Aditya Balani Joins CSDA Design Group as Senior Acoustician in Los Angeles

Los Angeles, CA – March 1, 2020: CSDA Design Group (CSDA), an internationally-recognized architecture and acoustical consulting firm, has recently hired Aditya Balani as Senior Acoustician to meet the needs of its growing client base in Southern California.

Aditya is a highly experienced acoustical consultant in the design and construction industry with a long resume of projects for high-profile clients that include Apple, Kaiser, Metro, California High-Speed Rail, and USC. He enjoys working closely with the design team to find a balance between acoustics, project budget, client expectations, and aesthetics. He is adept at meeting clients’ needs in a timely fashion and bringing innovative and cost-effective acoustical solutions to clients and stakeholders. His experience includes architectural acoustics for all building types as well as construction noise and vibration monitoring. In addition, he supports and mentors’ junior staff and is involved in business development efforts.

Adi holds a Masters in Acoustics from The Pennsylvania State University and a Bachelor’s in Computer Engineering from the University of Mumbai, India. He is a member of the Institute of Noise Control Engineering (INCE) and the Audio Engineering Society (AES).

“Aditya is a great addition to CSDA’s fast-growing acoustical consulting team. His passion for problem-solving and positive attitude is infectious; not to mention his breadth of experience and expertise working on high-profile projects that will, without a doubt, benefit both our team and our clients,” said Randy Waldeck, CSDA’s Principal of Acoustics.

1951 Harbor Bay Parkway Exelixis Offices Expansion

Exelixis, a biotechnology company that specializes in the development and commercialization of new medicine to treat difficult cancers, has made a deal to lease and build a new modern campus for its new headquarters in Alameda county. The company already occupies three buildings along Harbor Bay Parkway. With this expansion, the company will occupy 440,000 square feet of office and lab space.

CSDA is fortunate to be a part of this great project, providing the design team with acoustical design services, beginning with an environmental noise study and finishing at the completion of construction. The construction of Exelixis’ new headquarters is expected to begin this summer.

American Cooperative School of Tunis (ACST)

CSDA recently completed an Existing Facilities Analysis and Programming Study for The American Cooperative School of Tunis (ACST). Firm principals Cindy Ketelsen and Mark Knoerr spent a week in Tunisia working with faculty, staff, parents and students identifying space requirements both present and future.
The ACST provides an American educational system for approximately 450 multi-national students in grades Pre-K through 12. The school has been at its present site since 1961 and is located near the American Embassy. The existing buildings are of varying ages and have undergone modest renovations and additions with throughout the years.

Specific goals for the ACST Campus Needs Assessment, as developed through the master planning process, are to:

• Evaluate the adequacy of the educational, administrative and support spaces required for the campus operations.
• Evaluate the site conditions, building systems, and utility infrastructure and determine impacts on the educational facility.
• Provide a compilation of recommendations of facility components and systems that need to be demolished, constructed, modernized or    renovated.
• Provide suggestions for prioritizing facility improvements over the short-term, mid-term and long-term.

Learn more about the ACST here: