Business Details
50+ Years
experience
Trusted Steel Fabrication & Erection Services in Miami
Capitol Steel Structures was founded in 1973 with a vision to deliver structural steel solutions rooted in integrity and excellence. Over five decades, we have grown from a small family operation into an AISC-certified leader in steel fabrication and erection, serving South Florida and beyond. Our expertise spans design-phase shop drawings, precision fabrication of over one million tons of steel, and handling complex erection projects for commercial, residential, and sports infrastructure. With a team of certified welders, engineers, and project managers, we prioritize collaboration with architects and engineers to transform designs into durable, high-quality structures. Our portfolio includes iconic projects like the FARMASI U.S.Headquarters, University Station Bridge, and luxury retail spaces at Miami Design District. Backed by AISC certifications in fabrication, erection, and metal deck installation, we maintain rigorous professional standards while fostering teamwork to solve construction challenges. Our commitment to quality, timeliness, and client trust has earned us partnerships with industry leaders and repeat clients across diverse sectors.
Services
Design Services
Steel Fabrication
Steel Erection
Steel Detailing
Prefabricated Items
Details
- Year established: 1973
Highlights and features
- Over 50 years of structural steel expertise since 1973
- AISC-certified in fabrication, erection, and metal deck installation
- In-house steel detailing with Tekla Structures and Advanced Steel software
- Experienced crews handling projects from sports arenas to luxury retail spaces
- Proven track record with notable clients like HITT Contracting and John Moriarty
Associations and certifications
- American Institute of Steel Construction (AISC)
Services
Design Services
Our team develops precision shop drawings using Tekla Structures and Advanced Steel software. We collaborate with engineers and architects to translate blueprints into actionable plans. With in-house detailing and 3D modeling capabilities, we ensure accurate structural steel fabrication and efficient project execution from concept to completion.
Steel Fabrication
We fabricate over one million tons of structural steel annually, specializing in columns, beams, and custom components. Our Miami facility produces prefabricated elements like bollards, access ladders, and A/C covers. Certified welders and advanced machinery ensure compliance with AISC standards for quality and safety in every steel component we manufacture.
Steel Erection
Our experienced crews handle steel erection projects of all scales, from commercial buildings to sports arenas. Using specialized equipment and certified erectors, we ensure safe, efficient installation of fabricated components. The team maintains strict adherence to timelines while guaranteeing structural integrity during on-site assembly operations.
Steel Detailing
We provide comprehensive steel detailing services with CNC, DXF, and NC file generation. Our specialists create isometric drawings and shop plans that guide fabrication and erection processes. This critical pre-construction phase ensures dimensional accuracy and coordination between design intent and physical implementation.
Prefabricated Items
Our shop produces ready-to-install prefabricated elements including outriggers, embeds, and stock materials. These standardized components streamline construction timelines while maintaining quality control. We also fabricate specialty items like bar grating and architectural steel features to meet unique project requirements.
People
Ruben Diaz
Founder & CEO
Ruben Diaz leads Capitol Steel Structures with five decades of industry experience. He transformed his father's 1973 bolt-job business into an AISC-certified enterprise. His leadership emphasizes family values, teamwork, and quality-driven growth while maintaining the company's founding principles of trust and resilience.
Pablo Garcia
Vice-President of Operations
Pablo Garcia oversees daily operations with extensive construction management expertise. He ensures seamless coordination between design, fabrication, and field teams. His strategic oversight maintains Capitol Steel's reputation for timely project delivery while upholding safety and quality standards across all operations.
Javier Cintra
VP of Engineering/PM/Purchasing
Javier Cintra manages engineering operations and procurement processes. With technical expertise in structural systems, he ensures material specifications meet project requirements. His role bridges design intent with practical execution, maintaining cost-effectiveness without compromising structural integrity or client expectations.
Joaquin de Feria
Vice-President of Fabrication
Joaquin de Feria supervises steel manufacturing operations with deep knowledge of fabrication techniques. He oversees certified welders and machinery operators to guarantee precision components. His focus on continuous improvement maintains Capitol Steel's status as South Florida's preferred fabrication partner for complex structural requirements.
Armando Amezaga
Project Manager
Armando Amezaga coordinates project execution from design to completion. He maintains client communication while managing timelines and resources. His hands-on approach ensures adherence to specifications across diverse projects, from luxury retail spaces to infrastructure developments, reflecting Capitol Steel's commitment to client satisfaction.
Questions
What steel fabrication services do you offer?
We provide complete structural steel fabrication including columns, beams, custom components, and prefabricated items like bollards and access ladders using advanced machinery and certified welders.
Are you AISC certified?
Yes, we hold AISC certifications in all three categories: steel fabricator, erector, and metal deck installer since our founding in 1973.
What project types do you handle?
We work on commercial buildings, sports arenas, residential developments, infrastructure projects, and luxury retail spaces throughout South Florida and beyond.
Do you provide design assistance?
Yes, our team creates detailed shop drawings using Tekla Structures software and collaborates with architects to ensure accurate structural implementation during design phases.
What are your working hours?
Our Miami office operates Monday-Friday from 8:00 AM to 5:00 PM. Field crews maintain flexible schedules to meet project deadlines while ensuring safety and quality.
