Our Team

Senthil Puliyadi, P.E.

Co-Owner & Sr. Engineer

Mr. Puliyadi, a licensed civil engineer in California (#C71630), has extensive structural engineering design experience and has worked as Engineer-of-Record on several heavy industrial and commercial construction projects including projects with construction cost of $36 Million, $12 Million, and $8 Million. His range of professional experience includes designing buildings, tanks, and other non-building structures constructed using concrete, masonry, steel, and wood materials. He is knowledgeable about strengthening / retrofitting of existing structures and has experience in construction support such as reviewing shop drawings and submittals, responding to RFIs, and preparing cost estimates. STAAD PRO, RISA, RAM ELEMENTS, AUTOPIPE, MATHCAD, and MS Office are some of the computer tools he uses for proper documentation and efficient use of time.

Mr. Puliyadi is conversant with advanced structural concepts such as finite element methods, mat foundations, pile foundations, liquid-tightness requirements, hydrodynamic loads, structural dynamics, vibration, and dynamic soil loads. He attends seminars and conferences periodically to keep current with Codes and Standards such as IBC 2012, CBC 2013, ASCE 7-10, ACI 318, ACI 350, AWWA D100, AISC 360/345, ACI 530, and NDS Specifications for wood.

Representative Structural Engineering Design Projects:

  • Anaheim Public Utilities Lewis Substation, Anaheim, California
  • Refinery Experience (Shell)
  • Refinery Experience (Chevron)
  • Waste Water Treatment Plant Expansion, Ironhouse Sanitary District, Oakley, California
  • Lake Merced Pump Station Upgrades, San Francisco Public Utilities Commission, California
  • Sunol Valley WTP Expansion, San Francisco Public Utilities Commission, California
  • Digester Upgrades Project, East Bay Municipal Utilities District, California
  • Temecula Valley RWRF, Eastern Municipal Water District
  • City of Roseville, California
  • Water Treatment Plant, City of Clovis, California
  • Water Treatment Plant, South San Joaquin Irrigation District City of Manteca, California
  • Water Treatment Plant Expansion, City of Salem, Oregon
  • Egg-shaped Digester Facility, The District of Columbia Water and Sewer Authority
  • Washington, D.C.
  • El Dorado Irrigation District, El Dorado, California
  • Stockton WWTP, City of Stockton, California
  • City of Chico, California
  • Fairfield-Suisun Sanitation District, Fairfield, California
  • Contra Costa Water District, Concord, California
  • City of Turlock, Turlock, California

Nikhil Choudhary

Co-Owner, M.S. Struct., Estimating & Operations

Mr. Choudhary has a Master’s degree in Civil Engineering from Michigan State University and several years of experience in Engineering & General Contracting. Before joining Zenith Engineers as a Partner, Mr. Choudhary worked with large & small general contracting and engineering companies in the Greater New York City area, California & the Midwestern United States. Mr. Choudhary is an expert in team and resource management.

Representative Structural Engineering Design Projects:

  • Metropolitan Transportation Commission (MTC) Hub Signage Project, California
  • Oregon Expressway Repairs, California
  • Sunnyvale Streetscape, California
  • City of Los Gatos, California
  • Caltrans, California
  • Lansing Capital Region International Airport, Michigan
  • Southwest Michigan Regional Airport, Michigan
  • Detroit Arsenal, Michigan
  • Various Wal-Mart & DOT projects in Midwestern US
  • Kingsbury Multifamily Housing, Trenton New Jersey
  • Mid-City Multifamily Housing, Jersey City, New Jersey
  • Township of Denville, New Jersey
  • Town of Morristown, New Jersey
  • Township of Morris, New Jersey
  • Township of Somerville, New Jersey
  • Somerset Presbyterian Church, New Jersey
  • Corpus Christie Parish, New Jersey
  • Burns Family Pavilion- Plumbing Seismic Bracing Design
  • St. Matthew’s Episcopal Church & Day School- Plumbing Seismic Bracing Design
  • SFO Airport- Concrete Roof & Slab Formwork Design
  • City of Anaheim, Lewis Substation- Analysis of Various Substructures
  • El Estero WWTP Tertiary Filtration Replacement- Pipe Support Engineering & Design
  • Solano Community College- Plumbing/Duct Seismic Bracing Design
  • Dublin San Ramon Services District- Formwork Design
  • 48 Shattuck Ave., Berkeley – Temporary Shoring Design

Davis Ruiz

Director of Business Development / davis.ruiz@zenithengineers.com

Mr. Ruiz oversees all business development activities in our Northern and Southern California offices. He has extensive construction design experience with over 15 + years in the civil design and construction. His experience includes project management of government civil projects, contract maintenance for public and private entities, and AutoCAD underground civil design. Davis is a people’s person and likable, understands each client’s needs and urgency, making him aware of all the challenges faced by contractors, architects & owners. 

Mark Wegener, P.E.

Engineering Manager- West Coast

Mr. Wegener has extensive structural engineering design experience and is an innovative, proactive, and collaborative senior engineering manager with more than 20 years of experience leading civil/structural engineering projects. Mr. Wegener has demonstrated ability to translate client requirements into superb building designs, delivering results on schedule and within budget. Mr. Wegener has an extensive history working with government and commercial business structures, including prisons, schools, modular residential facilities, treatment plants, pump station, and other heavy industrial plants.

Certification & Training:

  • Registered Civil Engineer – California, Oregon, Washington
  • Green Building for Architects
  • NABCEP Certified
  • Certificate of Completion – Value Engineering, Kitchell Total Quality Management Process
  • Annual Educational Training in IBC, Wood, Steel, Masonry, Concrete
  • Bachelor of Science in Engineering (Structures) – University of California, Davis, California

Vincent Yan

Director of Estimating & Sr. Project Engineer / vincent.yan@zenithengineers.com

Mr. Yan has a Bachelors degree and a Master’s degree in Structural Engineering from Louisiana Tech University. He has an expertise in multiple engineering design software and tools such as STAAD.Pro, RAM Elements, Mathcad, CAD 2d & 3d, AutoPIPE, etc.  

YISILAYIN SILAFU

Structural Project Engineer

Mr. Silafu has a Masters and Bachelor’s degree in Civil/Structural Engineering From University of California, San Diego . He has an expertise in multiple engineering design software and tools such as STAAD.Pro, RAM Elements, Mathcad, CAD 2d & 3d, AutoPIPE, etc.

Representative Structural Engineering Design Projects:

  • Incineration Expansion Project – Pipe Stress Analysis and Pipe Support design.
  • Engineering Support for Trestle
  • Pump Anchorages design
  • Drain Pipe Support and HVAC Duct Support
  • El Cerrito kitchen-Deck project – Wall demolition and patio design.
  • Aluminum Truss Design
  • Chandler Hahn AZ Pipe Supports
  • Panache Academy – 2410 San Ramon Valley
  • Shearman & Sterling Operable Wall
  • 3602 Glacier Court North Pleasanton (Foundation Inspection)

Raymond Leung

Civil/Structural Engineer

Mr. Leung has a Masters and Bachelor’s degree in Civil/Structural Engineering University of California, San Diego . Mr. Leung has a keen eye for engineering with strong interest in seismic behavior of structures. Mr. Leung is an expert in designing residential remodel or residential new construction projects.

Representative Structural Engineering Design Projects:

  • Engineering Investigation, Sacramento California
  • MWD Lakeview Pipeline
  • Structural Insulated Panel, Richmond California
  • Multiple Carport Design & Analysis in TX
  • Solar PV Design Assist in CA, NY, NJ, MA
  • West Hills Water Treatment Plant
  • Multiple Residential Home Remodels in CA, OR, WA, AZ, NJ & NY

Senthilkumar A.G.

Project Engineer

Mr. Kumar has a Bachelor’s degree in Civil Engineering. Mr. Kumar is a young professional keen to learn all aspects of structural designing.

Representative Structural Engineering Design Projects:

  • RTU Anchorage RedLobster
  • Novartis- 150 Industrial Rd San Carlos
  • Galt Pipe Support
  • Silicon Valley 6331 San Ignatio Ave San Jose
  • Flow Equalization Project
  • Castro Canyon Bridge
  • Mill Creek Bridge
  • 7-Eleven Stores Structural Analysis of Roof

Ritesh Bhingare

Sr. CADD Designer

Mr. Bhingare has several years of 2D drafting experience. His project portfolio includes transportation, industrial plants, scaffold design, pump station, and residential wood construction projects.

Representative Structural Engineering Design Projects:

  • Mill Creek Bridge
  • Stanford HEPL South End Station III – Temporary Staircase Tower
  • Wadell Creek Bridge Scaffolding
  • Scott Creek Bridge Scaffolding
  • Threemile Bridge Scaffolding Rio Vista
  • City of Rocklin Bridge
  • City of Pleasanton Bridge Maintenance Project

Sudhanshu Kher

Structural Project Engineer

Mr. Kher has a Bachelor’s & Masters degree in Structural Engineering. Mr. Kher has several years of experience in all aspects of structural designing.

Representative Structural Engineering Design Projects:

  • Various Seismic Designs for Equipment at Google Mountain View
  • Novartis- 150 Industrial Rd San Carlos
  • Galt Pipe Support
  • Silicon Valley 6331 San Ignatio Ave San Jose
  • Flow Equalization Project
  • Castro Canyon Bridge
  • Mill Creek Bridge
  • 7-Eleven Stores Structural Analysis of Roof