what do think about solar racking systems

1. Racking Systems
Class number 12.1
Number of hours 20
1

2. Racking Systems
Depending on the roof type, there are several types of racking systems.
The most common are used for metal deck roofs and for the tile roofs.
Racking system components are different for different types of roof.

3. Racking Systems
First step on the tile roof is to examine the roof construction and determine the positions of
the rafters. This is important because “hooks” are going to be attached to them.

4. Racking Systems
Planning the module area:
• Number of modules in the vertical direction x module height
• Number of modules in horizontal x module width
• Horizontal spacing of the roof hooks up to 1.0 m
• Vertical spacing of the roof hooks = approx. 1⁄2 to 3⁄4 of module height

5. Racking Systems
1. Standard Rail
2. Roof Hook for tile roof
3. Mid-Clamp
4. End Clamp
5. Tin interface (metal roof “hook”)
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2
4
3
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6. Racking Systems
• Determine the positions of the roof hooks according to module area
• Remove the roof tiles at the marked positions or, if possible, simply push them up slightly.
• Fix the roof hooks to the rafter using wood screws/bolts

7. Racking Systems
For the metal deck roof, instead of hook, we are putting the “tin interface”.
Tin interface “grabs” the bulged part of metal deck and tightens with bolts.

8. Racking Systems
• The roof hook must not press against the roof tile. If necessary, shim the roof hook with
wood
• Do not use fitted roof hooks as a ladder, as this extreme point load could damage the tile
below.

9. Racking Systems
• Install the framing for each row of modules loosely on the roof hooks
• Adjust to necessary vertical and horizontal position by using the slot hole in the roof hooks
• Use water level tool to align the system horizontally

10. Solar Academy
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Science of Life Studies 247
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