Derek Duval, PE, DBIAWhat drew you to becoming an engineer? I have always been interested in how things work and how I can make these things better and more efficient. At a young age I would take things apart to see how they worked. I had a collection of Legos around the house without instructions, so I would be left to my imagination to create structures, vehicles, spacecrafts, anything. This led me to starting up the robotics club at my high school where I became involved in all aspects of the... Read More.


Pat Papartassee, PEWhat drew you to becoming an engineer? Originally, I wanted to be a physics teacher but decided to change course and study mechanical engineering. Engineering is a very broad field and I got into consulting engineering right after college. The learning never ends in this profession; no two projects are ever the same. That combined with working in a team environment is what keeps me interested. I still have a passion for teaching and really enjoy training and working with young... Read More.


Dan Munn, PE, SEWhat drew you to becoming an engineer? Growing up my experience was that engineers were the leading man type in movies and always got the girl so the answer to your question is obvious! In actuality I have a problem-solving brain and engineering chose me. Science is such an important field and I have tremendous respect for the rigor of scientific study and investigation, but I fell into applied science so that I could make cool stuff. When I was in high school, I worked in constr... Read More.


Adam White, PEWhat drew you to becoming an engineer? I’ve always been interested in how things work. As a child, I was that kid who would ask too many questions and try to take everything apart. My curiosity was never satisfied until I had a detailed understanding of exactly how each little piece of a machine, or an appliance worked. I’m thankful for the patience of my parents who would always answer my constant queries and kept a level head when I ran amuck with a screwdriver. My dad is a M... Read More.


Joe Ross, PEWhat drew you to becoming an engineer? Like many teenagers in the 70’s, I didn’t really know what I wanted to do beyond high school. I had always done well in math and science and aptitude tests pointed me to engineering. After reading the Cal Poly engineering descriptions about Solar Engineering, I thought it sounded very cool and I went for it. It was combined with HVAC studies as a concentration in the Environmental Engineering department. Even though I had no idea what HVAC m... Read More.


December 20, 2018 - Congratulations to our Fall 2018 Staff Promotions on a job well done!   ... Read More.

TK1SC Named a Best Place to Work in Los Angeles - Aug 15, 2018

    Los Angeles, CA - August 15, 2018 – The Los Angeles Business Journal hosted it’s 12th annual Best Places to Work in Los Angeles luncheon today where tk1sc’s Los Angeles office was honored with an award. The ceremony awards top local employers that participated in a detailed survey on subjects such as leadership, corporate culture, communications, and much more. “I am really proud of our LA team and what we have accomplished in such a short time. Everyone is ... Read More.

TK1SC Ranked 44th MEP Firm in the US - Aug 9, 2018

August 9, 2018, Irvine, CA – TK1SC ranked 44 out of 100 US MEP firms in Consulting-Specifying Engineer’s 2018 MEP Giants program. “We are thrilled to have moved up in the rankings on the MEP Giants list this year” says CFO Ray Swartz, PE. “We attribute this growth to the continued utilization of the tk1sc o|n|e approach with our clients allowing us to deliver excellent outcomes based upon their needs and expectations.” Consulting-Specifying Engineer, a CFE Me... Read More.

Dan Munn Joins TK1SC Expanding Firm to Pacific Northwest - Jul 11, 2018

(July 11, 2018 – Irvine, CA) – Long-time Seattle-based structural engineer Dan Munn, SE, PE, LEED AP, joined TK1SC as principal and office lead for their new Seattle office, making this their sixth office. Notable for his pioneering work with sustainable design and photovoltaics, Dan brings a breadth of experience and depth of knowledge as he builds TK1SC’s presence in the Pacific Northwest. “I’m thrilled to be part of such a dynamic engineering firm” says Mu... Read More.


May 24, 2018 – Congratulations to our Spring 2018 staff promotions on jobs well done.  ... Read More.

Larry Sun Retires from TK1SC - May 7, 2018

May 7, 2018 (Irvine, CA) – After 33 years with the firm, Larry Sun, PE, has retired from TK1SC. He started in 1985 after graduating with a bachelor’s degree in mechanical engineering from Cal Poly San Luis Obispo. At the time we were known as Tsuchiyama & Kaino providing mechanical and plumbing engineering services throughout southern California. A talented mechanical engineer, Larry became a registered professional engineer in 1987, and a partner in 1996. In 2002, we became Tsu... Read More.


Ray Swartz, PE What drew you to becoming an engineer? While working on my bachelors in physics at University of California, Riverside, I had absolutely no idea what I wanted to be when I grew up. During college I worked for two years at WA Doby Engineers, under the engineering supervision of William A Doby, PE. I had worked as an electrical contractor but I found it intriguing to be engineering a project rather than constructing it. Mr. Doby was my first mentor in the electrical engineering fie... Read More.


Joshua Apolenis, PE What drew you to becoming an engineer? When you are good at math and science you get told you should be an engineer. Combine that with having an uncle and brother who are fire protection engineers and it just seemed like a logical choice. I was accepted in to the University of Maryland’s Fire Protection Engineering program and the dean of the FPE school told us that every person who graduated from that program got a job right away so that sealed the deal for me. An add... Read More.


Bill Brown, PE What drew you to becoming an engineer? I am what some may call an ‘accidental’ engineer. When I applied to Cal Poly San Luis Obispo I wanted to be an architect. There was a mishap with my transcripts and by the time everything was figured out the architecture program was closed. That meant I had to pick a new major. Environmental engineering was open and I thought it sounded interesting. I picked that with the intent to move in to the architecture program at the next ... Read More.


Grace Pedersen, PE What drew you to becoming an engineer? There are a few things that led me to choose engineering shortly in to my college career. I grew up with an interest in sustainability and reducing our impact on the environment. I have always loved problem-solving probably because math has always been my favorite subject. And, like any good engineer I always wanted to help my Dad with any home improvement projects. What’s your favorite project? 725 S. Figueroa Chilled Water Plant ... Read More.

Engineer Week Spotlight: Roger Carter, PE - Feb 19, 2018

Roger Carter, PE What drew you to becoming an engineer? I was always interested in mechanical things. You know, the standards like engines, pulling things apart to see how they worked so I could then rebuild them, etc. It also turned out that I seemed to be pretty good at drawing as well. A high school teacher of mine talked about this and he said, “It sounds like you should be an engineer.” I had no idea what an engineer was or did but I thought, sure I’ll do that. What&rsquo... Read More.

Bill Brown to Lead tk1sc’s Bay Area Office - Dec 4, 2017

San Jose, CA - December 4, 2017 - Bay Area industry leader and award-winning engineer William R. Brown, PE joins tk1sc as a principal and the leader of our Bay Area office. Well-known for his thought leadership in mechanical engineering, sustainable design, and net zero building projects, Bill will focus on the growth and development of our Northern California practice – forging successful client relationships, mentoring staff, and creating new partnerships for our firm.A northern Californ... Read More.


November 22, 2017 -- As 2017 comes to an end, we have plenty to be thankful for. Congratulations to our recently promoted for jobs well done. ... Read More.


August 10, 2017 – ENR California announced the winners of their Best Projects 2017 competition last Friday and tk1sc is is named in three projects in the Interiors / Tenant Improvement SoCal and the Specialty Contracting SoCal categories. According to ENR, of the nearly 100 projects located throughout California and Hawaii, projects were evaluated on the ability of the project team to overcome challenges, contribution to the industry and community, safety and construction, and design qual... Read More.

TK1SC Ranked 48th MEP Firm in the US - Aug 10, 2017

August 10, 2017, Irvine, CA – tk1sc ranked 48 out of 100 US MEP firms in Consulting-Specifying Engineer’s 2017 MEP Giants, and ranked fifth in firms whose revenues are generated solely from MEP services. “This is our first year participating in the MEP Giants program and to place in the top 50 is thrilling,” says COO Ray Swartz, PE. “When TKSC and Konsortum 1 merged just five years ago to provide full MEP services, our cultures and values blended so well. Five year... Read More.

tk1sc Named a Best Place to Work in Los Angeles - Aug 9, 2017

Los Angeles, CA - August 8, 2017 – Yesterday, the Los Angeles Business Journal hosted the 11th annual Best Places to Work in Los Angeles luncheon where tk1sc’s Los Angeles office was honored with an award. The ceremony awards top local employers that participated in a detailed survey on subjects such as leadership, corporate culture, communications, and much more. “This award speaks to the commitment we’ve made to give our employees a place to think, create, learn, ... Read More.

Embracing change is good. Driving it is great! - Aug 9, 2017

August 9, 2017 – Recently, we held our annual Innovation Contest where we asked our team to innovate ways that challenge the status quo, positively impact our clients and firm, and/or provide a process that makes us more efficient. In all, 44 staffers formed 16 teams and overwhelmed us with their creativity, detailed presentations, and care for client success, as well as our own. First and second place awards were given in three categories:  • Engineering Excellence• Intern... Read More.

Keep Calm We're On Fire! - Jul 20, 2017

Announcing tk1sc's Code, Life Safety & Fire team! ... Read More.

Jeff Landreth,PE is one of the best 40 under 40 - May 18, 2017

Being nominated is an honor. But, winning is awesome. Jeff has yet to turn 40, but he's one of only 40 engineers making it on Consulting-Specifying Engineer's 40 Under 40 list for 2017.Jeff exemplifies our firm's strategic vision of building value through innovation in everything he does for us. As one of our principals, he goes the extra mile for clients and co-workers, inspiring us along the way. Way to go, Jeff!  ... Read More.

StudioK1 Brings Color to the Great Park - Apr 27, 2017

Uniting two family-oriented neighborhoods with an extensive park and trail system, a pedestrian/cycling bridge spans Irvine Boulevard in Irvine.    ... Read More.

2017 Promotions & Additions - Mar 7, 2017

Learn to look after your staff first and the rest will follow. –Richard Branson In the few short years since we became tk1sc, we’ve grown to more than 200 professionals over five offices. We’re having a blast! We attribute this to keeping our focus on providing the best service we know how, and never taking our clients or our staff for granted. Recently, we promoted some of our team, and added to our leadership. We wish we could include accolades for everyone, but that email wo... Read More.

tk1sc & StudioK1 Receive National Recognition for Riverside County Law Building - Jul 19, 2016

The Illuminating Engineering Society (IES) has bestowed a national award of merit on The Riverside County Law Building. The project also received the Energy and Environmental Design Award of Merit from the Orange County Chapter of the IES. The County Law Building in Indio is the first County of Riverside facility to receive the Platinum-level Leadership in Energy and Environmental Design (LEED®), the U.S. Green Building Council's highest level of certification.  The three-story, 90,000 ... Read More.

2016 Advancements & Promotions - Apr 12, 2016

tk1sc is pleased to recognize five colleagues for their contributions to the firm by promoting them to Senior Associate. ... Read More.

tk1sc Los Angeles - Feb 17, 2016

tk1sc is pleased to announce the opening of a new office located in Los Angeles, California. Situated in the heart of downtown, the office further establishes our commitment to providing a high level of service to our clients and projects in this region.  The ability to provide industry leading consulting services in close proximity to our clients and their projects has been a foundation of tk1sc's long-term strategy.  Our Los Angeles office provides for the localized technical experti... Read More.

tk1sc Welcomes Don Strickland to the Team! - Jan 29, 2016

tk1sc is pleased to welcome Don Strickland to the team as an Associate. Don is certified in Green Plumbing Design and is a certified Plumbing Designer with more than 21 years of industry experience. Don also serves on the National Board of Directors for the American Society of Plumbing Engineers. His project engineering expertise ranges from the concept phase to the final implementation of a diverse range of commercial, industrial, retail, education, corrections, sports facilities, pharmaceutica... Read More.

tk1sc Completes First Riverside County LEED Platinum Building! - Aug 4, 2015

Working with Trammell Crow Company and Langdon Wilson International, tk1sc is proud to announce the County Law Building in Indio as the first County of Riverside facility to receive the Platinum-level Leadership in Energy and Environmental Design (LEED®), the U.S. Green Building Council's highest level of certification. The three-story, 90,000 square-foot facility provides offices for the district attorney, public defender, county counsel and the Indio branch of the Riverside County Law Libr... Read More.

New Energy and Sustainability Group! - Jul 7, 2015

tk1sc is excited to offer expanded energy and sustainability services through our new Energy and Sustainability Group!  Energy efficiency, sustainable design and long-term occupant satisfaction have always been part of tk1sc’s fundamental approach to the way we design projects. Our team of specialists focuses on maximizing building energy performance through careful analysis of a building’s design and operation. Our new Energy and Sustainability Group is the perfect complement t... Read More.

Welcoming Joe Ross to the tk1sc team! - Jun 12, 2015

tk1sc is excited to welcome Joe Ross to our team in the role of Principal.  Joe brings to tk1sc 30 years of experience in mechanical engineering in many sectors including healthcare, bio tech/life sciences, pharmaceutical manufacturing, hospitality, education, residential and commercial office projects.  Joe specializes in healthcare, having spent the last 25+ years delivering healthcare sector projects across the nation. Joe is an active participant in the HVAC industry, he's had a nu... Read More.

tk1sc Commissions Lake Forest Sports Park - Apr 15, 2015

Working with RJM Design Group and Robert Coffee Architects, the Lake Forest sports park is located on the corner of Rancho Parkway and Portola Parkway and covers approximately 86 acres.  Elements of the park include five ball fields, two basketball courts, two synthetic soccer fields, two playgrounds / tot lots, two restrooms / concession buildings, eight gazebo picnic structures, outdoor exercise equipment and hiking trails. The sports park also includes a 27,000 SF recreation center which... Read More.

All offices are currently hiring! - Jan 21, 2015

It's 2015! Are you looking for new opportunities? tk1sc is continuing to grow our collaborative culture of leaders - and we are always seeking individuals who can share in our progress. Our team includes licensed professional mechanical, electrical, and plumbing engineers, certified low voltage system engineers, certified sustainable design engineers, commissioning agents, lighting designers and BIM specialists. Please reach out if you think you would be a fit! Visit our career page for more inf... Read More.

StudioK1 Welcomes Jeremy Windle to Our Design Team! - Dec 9, 2014

StudioK1 is pleased to welcome Jeremy Windle to our team as a Senior Designer. Jeremy joins StudioK1 with 20 years of experience at two of the leading lighting design firms in Los Angeles.  Jeremy started his career in entertainment, assisting on television shows such as Entertainment Tonight, Wheel of Fortune and Jeopardy!, as well as concert tours for John Mellencamp and Steely Dan. Transitioning into themed entertainment and architecture, Jeremy applied the same lighting techniques and t... Read More.

tk1sc Corporate Headquarters is LEED Platinum Certified! - Dec 4, 2014

tk1sc is proud to announce our new office space has achieved LEED Platinum for Commercial Interiors, scoring 84 points and earning the highest level of distinction awarded by the U.S. Green Building Council. tk1sc's environmentally friendly 24,410 square foot workplace is a first generation tenant improvement in an existing building located in Irvine, CA. With interior architecture by H. Hendy Associates, tk1sc provided full MEP, Security, Structure Cabling, Audiovisual Design, LEED project mana... Read More.

Welcoming David Mitchell To Our Design Team! - Nov 18, 2014

Our team is growing! Welcoming aboard David Mitchell as Senior Associate in our Mechanical Department! ... Read More.

tk1sc & Studio K1 help energize downtown Ontario! - Oct 22, 2014

tk1sc, working with landscape architects RJM Design Group and architect James Mickartz, has helped energize downtown Ontario, California with its new Town Center Square. The development of Ontario Town Square is part of the City of Ontario’s plan to invigorate downtown Ontario and transform the area into a model of sustainable living, for which tk1sc provided Electrical and Audio Visual Engineering services. This Town Center’s exterior was designed to use 34% less energy than stipula... Read More.

Construction of the new Martin Luther King Jr. Community Hospital is complete! - Jun 23, 2014

Construction of the new Martin Luther King Jr. Community Hospital is complete.  Originally opened in 1972, the facility ceased operation in 2007.  In 2009, the Los Angeles Board of Supervisors approved the first of several projects designed to revitalize the campus and establish the hospital as a center of excellence for healthcare in Los Angeles County.  The hospital is expected to serve 1.2 million residents from all over South Los Angeles including Compton, Inglewood, Watts-Wil... Read More.

Our Irvine office has moved! - May 15, 2014

Our new address is: 15231 Laguna Canyon Road, Suite 100 Irvine, CA 92618  Our phone numbers and e-mail addresses remain the same. Stay tuned for all of the exciting details about the new office space!    ... Read More.

tk1sc & StudioK1 Collaborate on New Eye Institute at UCI - Jan 14, 2014

The Gavin Herbert Eye Institute at the University of California, Irvine The new Gavin Herbert Eye Institute, located on the UC Irvine campus, is a 70,000 SF state-of-the-art facility. The Institute includes an outpatient surgery center, a Lasik refractive surgery center, 34 patient exam rooms, an optical shop, faculty offices and conference spaces. With the facility being an OSHPD 3 Surgery Center and Clinic space, special care was taken to ensure lighting levels met recommended footcandle requi... Read More.

TK1SC San Jose - Dec 3, 2013

  tk1sc is pleased to announce the opening of a new regional office located in San Jose, California The San Jose office further establishes our commitment to providing a high level of service to our clients and projects in this region. The ability to provide industry leading consulting services in close proximity to our clients and their projects has been a foundation of tk1sc's long term strategy. The regional San Jose office provides for localized technical expertise needed to deliver com... Read More.


Becky Haines, Bill Voller & Eileen Thomas are now Associates! During their tenure with tk1sc, Becky, Bill & Eileen have demonstrated strong leadership abilities and a commitment to success.  With over 20 years of experience in electrical engineering & design, Becky's knowledge and managment abilities make her a valuable resource for our electrical group. Bill has nearly 20 years of experience in electrical engineering & design and during his tenure he has fullfilled a key le... Read More.

StudioK1 Receives 7 Awards at Lumen West 2013 - Jul 5, 2013

STUDIOK1 continued to assert its status as one of the preeminent lighting design firms in Southern California, receiving seven awards for five projects at the Lumen West Awards held on June 22, 2013 at the Avalon Ballroom in Hollywood. The Lumen West Awards represent excellence in achievement in lighting design, and STUDIOK1 dominated the evening, as well as taking home the top prize for the IES Orange Section, The Lumen Award, for its work on The Anaheim Convention Center Grand Plaza - in addit... Read More.

Come see the exciting projects StudioK1 has been up to! - Nov 28, 2012 Read More.

Recent Projects - Oct 16, 2012

Taylor has a cool new workspace! Read More.

VM Ware Data Center - Oct 4, 2012

A LEED Platinum Rated Data Center VM WARE DATA CENTER - PROJECT AT A GLANCE Location: Wenatchee, WA Owner: Sabey Corporation Size: 81,000 SF LEED Rating: LEED Commercial Interior - Platinum   This remote data center was constructed within a new shell building. Pod 1 is generally a tier 1 data center, which is comprised of lab facilities, office, storage and support spaces totaling approximately 50,000 square feet. Pod 2 is a tier 2 data center which includes mission critical areas totaling ... Read More.

tk1sc to participate in BICSI subcommittee for I.T. Systems Design & Implementation Best Practices for Healthcare Institutions and Facilities manual. - Sep 25, 2012

tk1sc is proud to announce we will be participating in the BICSI subcommittee responsible for developing "Information Technology Systems Design and Implementation Best Practices for Healthcare Institutions and Facilities" Manual. This document will be published in 2013 as a resource for the low voltage design for the following facilities: • Acute Care Facilities. • Skilled Nursing Facilities • Psychiatric Facilities • Ambulatory Clinics and Surgical Centers • Outpatient... Read More.

tk1sc provides Commissioning & Engineering for the Greenovation classroom retrofit project at Davis Magnet School - Sep 18, 2012

tk1sc provided; Commissioning, Electrical Engineering & Design, Lighting Design and Low-voltage Systems Design. For more information, click on the link. Read More.

TKSC and Konsortum1 Merge! - Jul 12, 2012

Prominent Southern California based Mechanical and Electrical consultants TKSC and Konsortum1 are pleased to announce the merger of their respective firms, effective August 6th, 2012. The new business combination will be named tk1sc, headquartered in Irvine, CA with branch offices in Roseville and Riverside. By bringing together TKSC's exceptional mechanical engineering consulting services and Konsortum1's leading edge electrical engineering/design business, tk1sc will offer clients a full range... Read More.