Daktronics CH-1421V - Manual (Page 8)

Installation 2-2
prior to specifying the actual footings. Be sure that the installation complies with local codes
and is suitable for particular soil and wind conditions. Daktronics assumes no responsibility
for displays installed by others. Daktronics
recommends that W-sections of grade 36 steel be
used for beams, and that 28-day (strength 3000 psi) concrete be used for footings.
A note about beam nomenclature: For a typical beam, W8x24 for example, “W” stands for
“Wide-Flange Beam”. The first number (8) is the approximate front to rear dimension of the
beam in inches. The second number (24) is the weight per foot in pounds. This numbering is
a standard in the steel industry. Widths are from 6.00 to 8.125 inches in the chart above.
Note: Recommendations for a single rectangular structural steel tube and footing to support
the display as shown in Drawing A-49278 must be determined by a qualified structural
engineer using data from a soil sample test at the site.
2.3 Display Mounting
Reference Drawing: Shop Dwg, Mounting Details ......................... Drawing A-49278
Drawing A-49278 shows the typical mounting for the display.
Note: The bolts that secure the display to the beam(s) do not go through the beam(s), but run
along both sides of the beam, clamping the display to the beam(s).
A mounting kit consisting of mounting angles and ½” hardware are provided to mount the
display.
1. Locate and mark where the center of the beams will be on the back of the display
mounting channel if it is different from the c-c distance shown in Drawing A-49278 and
the table above.
2. Drill 9/16” holes in the mounting channel on the back of the display at a distance of plus
or minus 3.50” or 4.50” from the location which each beam center was marked if it is
different from the c-c distance shown in Drawing A-49278 and the table above.
3. Position the display at the front of the beams with the threaded rods extending from the
rear of the mounting channels, straddling the beams. Raise the display to the desired
height.
4. Slide clamping channels over the ends of the rods and loosely install washers and nuts.
5. Make final adjustments in the positioning of the display.
6. Make sure that the threaded rods are perpendicular to the display and tighten all of the ½”
nuts.