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Roof Racks
SHEM supplies flush mount and tilt mount hardware, and supports a range of custom racking applications. Flush and tilt mount hardware is supported with engineered mounting details and wind calculations using Florida's 140 MPH wind loading. Florida's wind load code requirements are the most stringent in the nation. Reasonable jurisdictions accept these mounting details and calculations in their permitting process.
For flush and tilt mount specifications, please select any of the following links:
Flush Mounting Detail
Tilt Mount Detail
Tilt Wind Load
General Wind Load Calculations
Custom Applications
Racking possibilities are as endless as the roofs their built on. Below is an flat roof example of use of Unistrut and tilt mount hardware in a pitch pocket for a drainback application.
 Above, Unistrut is tilted using varying widths of CCA blocking bolted to roof rafters below. Blocking provides slope for the drainback system. Tilt mount hardware is mounted directly to the Unistrut, with cross bracing added. Self tapping screws quickly fasten all together. A pitch pocket is constructed around the entire assembly.  Finally, the pitch pocket cap is constructed. For some applications, a custom frame is preferred. Above, a custom 1-1/2" angle rack is supported by eight legs of differing lengths. The return line hides a 1/2" cross brace that stiffens the rack while supporting the hot water return. Self tapping screws fasten collectors to the rack. Concrete piers were constructed after the rack was onsite. While wet, the rack was placed in the piers, to make sure each pier was exactly the right height. NOTE: Be sure the feet that fasten each leg to the pier are set 90 degrees from the rack to enable easy drilling and bolting. Insulate buried supply and return lines. 1" rigid styrofoam was used to construct an insulating and shielding cavity for the lines and sensor wire. When constructing smaller racks, don't forget to notch the side for supply and return manifolds! Material and fabrication for this small rack was under $250. It's constructed of 1" angle, allowed to rust, then sealed with urathane. The result is a red rack that matched the roof.
For more ordering information, please contact us.
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