Sigma Engineering

Melas Energy Engineering a small engineering firm located in the Sierra foothills. Our proximity to Sacramento, the Bay Area and the Sierra Mountain regions ...

Hill Engineering solves complex structural problems inherent to fatigue and fracture critical systems. We have a special focus on residual stress engineering solutions that include unique residual stress measurement capabilities and damage tolerant design approaches. We have further developed a track record in the use of compressive residual stress treatments to solve aging and sustainment challenges. Our skills are useful in industries such as aircraft, power generation, ground vehicles, turbo-machinery, and petrochemicals. We founded the business on contracts with US Navy and Air Force aviation programs and have progressed through three stages of R&D awards, with residual stress applications for their premier fighter aircraft. We have diversified our work across organizations large and small - who turn to Hill Engineering for cutting edge and affordable engineering solutions. Recent clients are headlined by the US Navy and Air Force, Rolls-Royce, Pratt & Whitney, Boeing, Lockheed-Martin, Siemens Power Generation, General Electric, DynCorp, and Schilling Robotics - they want a range of solutions for structures, from nuclear power plants to aging - but still mission valuable - aircraft. By employing state of the art technologies with a collaborative, open business model that meets specific customer needs, we can provide turn-key project support as well as finished products, through project management, consulting, design, measurement, analysis, and testing that assures structural integrity.

PPI Engineering is a full-service Agricultural and Civil Engineering firm located in the Napa Valley, offering exemplary services in vineyard design and development, as well as site-civil work for driveways, residences, and wineries. With over 70 combined years of experience and a strong respect for the environment, their expertise includes erosion control, hydrologic modeling, vineyard mapping, geologic site analysis, and land use planning. Committed to providing timely and cost-effective solutions, PPI Engineering also specializes in surface and subsurface drainage design, reservoir design and grading projects, and permitting from Federal, State, and Local governments. They maintain a fully equipped survey crew for topographic, design, and construction surveys, ensuring comprehensive and accurate results for their clients.Generated from the website