Daktronics CH-2024V - Manual (Page 7)

Installation
2-1
Section 2 : Installation
2.1 General System
Reference Drawings: Footing & Beam, CH-2024V ......................... Drawing A-46492
System Layout, CH-2024V ........................... Drawing A-46533
Display Mounting, CH-2024V ....................... Drawing A-46534
Component Locations, CH-2024V................ Drawing A-46539
Pwr&Sig Entrance Components ................... Drawing A-46545
Connector Plate, CH-2024V ......................... Drawing A-46563
Color Code, 25 Pin J-Box ............................. Drawing A-47207
Electrical Installation, CH-2024V .................. Drawing A-47326
The CH-2024V display consists of three sections, the upper, middle and lower sections.
Refer to Drawing A-46533 for the general system layout.
The general procedure for installing the CH-2024V display is as follows:
1. Select beam and footing recommendations from the table in Section 2.2.
2. Dig the footing holes and install the beams and the footings.
3. Route power and signal cables to the display and the control locations.
4. Mount the displays to the beams as described in Drawings A-46492 and A-46534 and
Section 2.3.
5. Route power and signal wires into the displays as described in Drawings A-47326, A-
46539, A-46545, A-46563 and A-47207 and Section 2.4.
2.2
Beam and Footing Selection
The table below contains recommendation for beams and footings to support your display.
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 choice from these columns depends upon
the display location.
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 beams listed are W-shape (wide flange) beams which provide maximum wind load
strength for the weight and the cost of the beams.
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 400 psf per foot of depth in
natural grade was used to derive these figures.