The Hambro® D500 Floor System combines composite joists with poured concrete, developing a hybrid concrete/steel T-beam running in one direction and an integrated, continuous slab in the opposite direction. The D500 System utilizes reusable Rollbars® and plywood forms.
The bottom chord (min. Fy 50psi) acts as a tension member during both the concreting stage and the service life. The web system, consisting of bent rods, (min. Fy 44psi) ties the top and bottom chords together and resists the vertical shears in the conventional truss manner.
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Swirnow Structures LLC 
