Business Details
Emergency
services
Expert Construction Engineering Services in Santa Rosa, CA
As a leader in construction engineering design for over 30 years, we specialize in delivering innovative, safety-focused solutions for temporary structures and complex construction challenges. Founded on the principles of technical excellence and client collaboration, our team of licensed engineers provides shoring, scaffolding, and structural support systems for projects ranging from iconic bridges to high-rise buildings.With offices across North America, we combine deep expertise in excavation safety, suspended platforms, and tunneling engineering to address unique project demands. Our commitment to advancing industry standards through partnerships with organizations like SAIA and NAXSA ensures every client benefits from cutting-edge practices and unwavering reliability.
Services
Scaffold Design
Excavation Shoring
Structural Shoring
Tunneling Engineering
Rebar Cage Support
Falsework Design
Suspended Platforms
Crane Foundations
Exterior Maintenance
Special Event Structures
Highlights and features
- We offer 30+ years of specialized experience in construction engineering design.
- Our team holds active PE/SE licenses in all 50 U.S. states and Canadian provinces.
- We provide 24/7 engineering support for urgent project requirements.
- Our patented suspended platform systems have won industry awards from SSPC and NCSEA.
- We maintain active leadership roles in safety organizations like SAIA and NAXSA.
Associations and certifications
- Professional Engineer (PE)
- Structural Engineer (SE)
Services
Scaffold Design
We engineer custom scaffold solutions for complex structures, from historic bridges to high-rise buildings. Our designs prioritize safety compliance while optimizing access efficiency. With expertise in suspended platforms and containment systems, we support projects requiring specialized access solutions across North America.
Excavation Shoring
Our OSHA-compliant shoring systems protect workers in excavation environments. We design hydraulic jacks, slide rail systems, and cofferdams for infrastructure projects. As NAXSA members, we combine regulatory expertise with field-tested solutions for trench stability in challenging soil conditions.
Structural Shoring
We provide temporary support systems for bridge repairs and building demolitions. Our services include underpinning, wall bracing, and hydraulic jacking. Recognized for restoring the Historic Bridgeport Covered Bridge, we deliver solutions that balance structural integrity with project timelines.
Tunneling Engineering
We design tunnel support systems for pipeline installations and infrastructure projects. Our expertise covers bore pit engineering, casing analysis, and thrust block design. We address soil capacity and jacking force requirements for safe underground construction operations.
Rebar Cage Support
We develop stabilization systems for large rebar cages using guy wires, external frames, and anchorage solutions. Our team collaborates with academic institutions to advance safety standards, creating designs that prevent collapse during concrete pouring operations.
People
Don Charles
Founder
Civil engineering graduate with global project experience at Bechtel Corporation. Identified gaps in construction engineering solutions, leading to DH Charles Engineering's formation in 1992.
Jasper Calcara
President
Licensed structural engineer with 25+ years in construction engineering. Leads technical operations and chairs NAXSA's engineering committee for trench safety standards development.
Mitch Meadows
Branch Manager
Senior engineer specializing in bridge shoring systems. Co-chair of SAIA Shoring Council, with award-winning experience in temporary support structures for historic preservation projects.
Robin Ko
Senior Engineer
Expert in rebar cage stabilization systems. Collaborated with George Mason University on safety guidelines, contributing to industry best practices for temporary reinforcement structures.
Questions
What construction engineering services do you specialize in?
We specialize in scaffold design, excavation shoring, structural shoring, tunneling engineering, and rebar cage support systems for commercial and infrastructure projects.
Do you provide engineering services outside the United States?
Yes, we serve most Canadian provinces in addition to all 50 U.S. states through our seven regional offices.
Are your engineers licensed in all U.S. states?
Our team holds active PE/SE licenses in all 50 U.S. states and Canadian provinces to support nationwide projects.
Can you handle emergency engineering requirements?
Yes, we offer 24/7 engineering support for urgent project needs with rapid response times across North America.
What safety certifications do you maintain?
We maintain Professional Engineer (PE) and Structural Engineer (SE) licenses, with active roles in SAIA and NAXSA safety organizations.