Daktronics CH-1624V - Manual (Page 7)

Installation 2-1
Section 2 : Installation
2.1
General System
Reference Drawings: Pwr/Sig Entrance, 1 Driver Display ............. Drawing A-46755
Component Locations, CH-1624V .............. Drawing A-46756
System Layout, CH-1624V.......................... Drawing A-46757
Display Mounting, CH-1624V...................... Drawing A-46774
Footing & Beam, CH-1624V........................ Drawing A-46784
Color Code, 25 Pin J-Box ........................... Drawing A-47207
Electrical Installation, CH-1624V ................ Drawing A-47270
Refer to Drawing A-46757 for a general system layout.
The general procedure for installing the CH-1624V display is as follows:
1. Select beam and footing recommendations from the table below.
2. Dig the footing holes and install beams and footings. Refer to the table in Section 2.2 for
the correct beam and footing selections.
3. Route power and signal cables to the display and control locations.
4. Mount the displays to the beams as described in Drawings A-46774 and A-46784 and in
Section 2.3.
5. Route power and signal wires into the displays as described in Drawings A-46755, A-
46756, A-47207 and A-47270 and in Section 2.4.
2.2
Beam and Footing Selection
Reference Drawing: Footing & Beam, CH-1624V .......................... Drawing A-46784
The table below contains recommendations for W-shape beams and footings to support the
display as shown in Drawing A-46784. The first column is wind velocity in miles per hour.
The distance in the second column is from the ground to the bottom of the display. The
choices from these columns depend upon the display location.
The beams listed below are beams which provide maximum wind load strength for the weight
and cost of the beams.
Wind Speed Height (ft) Beam
Section
Footing Depth x
Diameter
70 10 W 10x19 7 ½ ftx3 ft
MPH 15 W 10x25 8 ¼ ftx3 ft
80 10 W 10x25 8 ½ ftx3 ft
MPH 15 W 10x29 9 ¼ ftx3 ft
90 10 W 14x26 9 ½ ftx3 ft
MPH 15 W 12x31 10 ½ ftx3 ft
The calculations for footing diameters and depths are based on the assumption that footings
are in undisturbed soils, not fill soils. Lateral bearing capacity of 300 psf per foot of depth in
natural grade was used to derive these figures.