Daktronics FB-2700 Series, Руководство по установке, Страница: 8 / 60

Mechanical Installation
4
2 Mechanical Installation
Mechanical installation consists of installing concrete footing and steel beams and
mounting the display and accompanying ad panels to the beams. The product
specification sheets listed in Appendix A include installation specification drawings that
show the recommended number of beams and spacing between them. The drawings
also indicate the size of beams required to support the display at different heights and at
various wind speeds. For Modular Football scoreboards and Pari-Mutuel displays, refer to
site-specific diagrams for proper placement and mounting method.
Any column and footing size dimensions are to assist with estimating installation costs;
they are estimates only and are not intended for actual construction purposes. Be sure
that the installation complies with local building codes and is suitable for the particular
soil and wind conditions. The columns, footings, and all connection details must be
designed and certified by a professional engineer licensed to practice in the state of the
display installation.
Note: Daktronics assumes no liability for any installation derived from the information
provided in this manual or installations designed and installed by others.
Lifting
Displays and display sections ship equipped with 1/2" shoulder-type eyebolts located
along the top of the cabinet for the purpose of lifting.
Whenever possible, use a spreader bar, or lifting bar, to lift the display� Spreader bars
ensure force on the eyebolts remains straight up, minimizing lifting stress.
Figure 3 illustrates the preferred lifting method on the left and an acceptable alternative
lifting method on the right. When lifting the cabinet:
• Use a spreader bar if possible.
• Use every lifting point provided.
Avoid using other lifting methods. Cables and chains attached to the eyebolts and
directly to a center lifting point, as shown in the “Acceptable” example in Figure 3 ,
can create a dangerous lateral force on the eyebolts and may cause them to fail. The
smaller the angle between the cable and the top of the cabinet, the lighter the cabinet
must be to safely lift it. If this method must be used, ensure a minimum angle between
the chain and cabinet of at least 45°.
Preferred
Lifting Bar
45° Minimum
Acceptable
Figure 3: Lifting Methods