The Hambro® D500 Structural Floor System provides a cost effective floor that is 2 to 3 times more rigid than competing systems due to its composite design. This system combines composite joists with cast in place concrete achieving superior fire and sound ratings.
For over 47 years, Swirnow Building Systems® has been building success stories with designers, builders, and developers like you. This remarkable track record is the result of hard work and our belief in getting things right the first time. We are a design/distributor of structural framing systems based in Baltimore City, Maryland with projects throughout the country.
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Swirnow Structures LLC 
