21
CLEARSPAN
™
MAJESTIC GREENHOUSES
Revision date: 06.21.16
CABLE ASSEMBLY
Cable assemblies provide diagonal bracing for the building.
Each cable assembly includes the following items:
• Two (2) lengths of cable (Measure from point-to-point
on the frame and cut as needed.)
• Turnbuckle (1)
• Cable thimbles (4) and cable clamps (4)
NOTE:
For each cable assembly, two (2) additional thimbles and four (4) additional cable clamps are used to attach the
cable assembly to the purlin clamps. Consult the Cable Diagram on the following page and the Side Profile Diagrams for
clarification and cable locations.
Cable Assembly Procedure:
1. Using the Side Profile diagram (and others) in the Quick Start section as a guide, measure the distance needed on
the frame, allow extra for assembly, and cut the cable to the proper length for each assembly. Extra cable has been
sent for the cabling. (Make a single assembly
before
making them all. This allows a check to be sure the correct
length has been cut.) Make the necessary length adjustments as needed.
2. Place one cable thimble approximately twelve inches
(12") from the end of a cable section and wrap the
cable around the thimble as shown in the figure to the
right.
3. Grasp both sections of the cable near the thimble
and position one cable clamp one inch away from the
thimble as shown above.
NOTE:
Position the clamp on the cable with its U-bolt
portion over the short/dead section of the cable.
4. With the saddle portion of the cable clamp in position,
thread the nuts onto the U-bolt section of the clamp
and tighten slightly to maintain the position of the clamp
on the cable.
5. Install a second cable clamp on the cable six to eight (6"-8") inches from the first clamp.
6. Tighten both clamps.
7. Remove the bolt from the jaw of the turnbuckle and position the cable end with the thimble into the jaw of the
turnbuckle.
8. Insert the bolt through the eye of the turnbuckle and the cable thimble, thread the nut onto the bolt, and tighten.
9. Repeat Steps 2-8 for the remaining length of cable for this assembly.
10. Open the turnbuckle to its longest position.
11. Repeat the above procedure for all remaining side and upper cable assemblies.
Thimble
Cable
Cable
Cable
Thimble
Typical Turnbuckle Assembly
Cable Clamps
Thimble
Turnbuckle
Turnbuckle Jaw
Turnbuckle Jaw
Cable Clamps
Dead End
SPECIAL NOTE:
Complete the following steps,
but
DO NOT tighten the cable assemblies at this time.
All cable assemblies for all bays will be tightened after
the frames for each bay are assembled and connected.