Structural Engineering Services

Performance You Can Count On—Because We Do the Work.

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STRUCTURAL ENGINEERING

W. M. Lyles Co. delivers comprehensive structural engineering services that form the backbone of California’s essential water and wastewater infrastructure. Our self-performance capabilities in concrete, structural steel, and foundation systems provide direct control over quality, schedule, and cost throughout every project phase.

How We Deliver Value

Our team self-performs critical structural trades, enabling seamless coordination between engineering requirements and field execution. This direct control eliminates gaps between design intent and constructed systems while maintaining the precision essential for treatment facilities, pump stations, and water infrastructure.

We consistently save our clients time and money through…

Seismic Design and Retrofit Solutions

California’s seismic requirements demand structural engineering excellence that protects essential infrastructure and public safety. We design and construct earthquake-resistant structures that exceed current codes while maintaining operational functionality after seismic events. Through value engineering and constructability reviews, we optimize structural systems to achieve maximum resilience without unnecessary cost premiums.

Cast-in-Place Concrete Excellence

Self-performed concrete construction ensures structural integrity from foundation to finish. Our crews place over 50,000 cubic yards annually, maintaining direct control over mix designs, placement methods, and curing protocols critical for water-retaining structures. We achieve specified strengths and watertightness requirements on the first pour through rigorous quality control and decades of experience with treatment plant construction.

Structural Steel Fabrication and Erection

In-house structural steel capabilities streamline complex industrial construction. We self-perform fabrication and erection of steel structures, platforms, and supports essential for treatment equipment and process systems. Our certified welders and riggers work directly with engineering teams to resolve conflicts before they impact schedules. This integrated approach reduces coordination delays between trades while ensuring precise alignment with mechanical and electrical systems.

Foundation Systems and Ground Improvement

Strategic foundation engineering addresses California’s diverse soil conditions with proven solutions. We design and construct deep foundations, mat slabs, and ground improvement systems tailored to site-specific geotechnical requirements. Our self-performed earthwork and dewatering capabilities enable efficient foundation construction even in challenging conditions. Through early collaboration and thorough subsurface investigation, we eliminate foundation-related surprises that trigger change orders and delays.

Building Essential Infrastructure with Expertise, Integrity, and Innovation

At W. M. Lyles Co., we manage and deliver complex infrastructure that supports clean water, renewable energy, and environmental stewardship. Our portfolio includes water treatment plants, advanced purification systems, wastewater facilities, and energy projects. Every job reflects our commitment to follow through, solve challenges, and deliver on what we promise.