Capitol Steel Structures is AISC certified in all three categories: fabricator, erector, and metal deck installer.

"It is not the beauty of a building you should look at its the structure that will stand."

Our Specialization

Design

For projects in the design phase, we develop the highest quality shop drawings utlizing the latest steel detailing softwares to be able to conceptualize every detail of the structural steel fabrication and erection.

Fabrication

With more than one million tons of structural steel fabricated over the past 40 years, We’ve earned the steel fabricator of choice for South Florida

Erection

We have the equipment and experience to take on steel erection projects of all sizes, from commercial spaces to sports arenas

News & Insights

Capitol Steel Structures Completes Steel Work for FARMASI U.S. Headquarters in Doral

Capitol Steel Structures Completes Steel Work for FARMASI U.S. Headquarters in Doral

Capitol Steel Structures proudly announces the completion of its work on the new North American headquarters and distribution center for

June 9, 2025
Capitol Steel Delivers Signature Bridge at University Station in Hollywood, Florida

Capitol Steel Delivers Signature Bridge at University Station in Hollywood, Florida

The grand opening of University Station in Hollywood, Florida, showcased not only a major step forward in affordable urban development

May 13, 2025
FIU ASCE Students Tour Capitol Steel Structures for Hands-On Introduction to Steel Fabrication

FIU ASCE Students Tour Capitol Steel Structures for Hands-On Introduction to Steel Fabrication

Capitol Steel Structures proudly welcomed students from the Florida International University (FIU) chapter of the American Society of Civil Engineers

March 27, 2025
Capitol Steel Structures Partners with NASCAR to Support Ryan Ellis at Homestead-Miami Speedway

Capitol Steel Structures Partners with NASCAR to Support Ryan Ellis at Homestead-Miami Speedway

In a thrilling chapter for both NASCAR and Capitol Steel Structures, the steel manufacturing giant partnered with driver Ryan Ellis

March 2, 2025

Leadership Team

A WORD FROM THE CEO

Capitol Steel Structures is a story of family, hard work, and vision. Our journey began in 1973, when my father laid the foundation of this company with nothing more than determination, grit, and a willingness to take on small bolt jobs and deliver steel materials wherever they were needed. From those humble beginnings, he built a reputation rooted in trust, quality, and resilience. 

Today, I am proud to carry forward his legacy as CEO and Founder, leading Capitol Steel Structures to international heights. What began as a small family endeavor has grown into a global construction force, yet our core values remain unchanged. We owe every milestone, every project, and every achievement to the strength of our loyal team. 

As I often say: “We stay together – we grow together.” 

This belief has guided us for over five decades and will continue to be the cornerstone of everything we do.

Ruben Diaz

Founder & CEO

Pablo Garcia

Vice-President of Operations

Javier Cintra

VP of Engineering/PM/Purchasing

Joaquin de Feria

Vice-President of Fabrication

Armando Amezaga

Project Manager

Alejandro Aleman

Senior Estimator

Felipe Basulto

Estimator

Our Promise & Values

Over 50 years experience

Capitol Steel Structures is an AISC Certified Steel Fabricator and Erector (BU-CSEA-MEE) Founded in 1973, originally named as Capitol Rental Building Equipment.

High quality products

Our partnership with our clients is based on mutual trust and we do what is best for our clients following our company’s values and methods.

Professional standards

To become an industry leader, it is important for us to encourage team work in order to solve any construction challenges and to achieve excellent results.

Our Projects

Custom

Arkup

Educational

Slam Bridge

Sports

Super Bowl

Commercial

Acorn

Residential

North Miami Beach

Housing

Senior Center

Notable Clients

"Our promise as a fabricator is to build community value into every project while delivering professional expertise, exceptional customers service and quality construction."

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