Nortel Meridian 1 Planning And Installation Manual page 104

Page 84 of 590 Chapter 8 — Installing a backboard for bracing chassis against earthquakes
Table 12
Backboard size limits
2
Table 13
Stud spacing
553-3021-209 Standard 1.00
When you have determined the required backboard size, make sure
the measurements are within the limits listed in Table 12.
Minimum
Maximum
Determine fastener requirements
You need the following information to determine fastener
requirements:
• What fasteners you must use.
• How deeply you must embed the fasteners into the wall.
• The vertical distance between fasteners.
• The horizontal distance between fasteners.
For wood and metal stud walls, determine this spacing by the
spacing between wall studs. Wall stud spacing must be within
the range listed in Table 13.
Minimum
Maximum
• The required wall stud sizes for wood and metal stud walls
July 1999
Backboard size
2 ft by 6 ft (600 mm by 1800 mm)
4 ft by 8 ft (1200 mm by 2400 mm)
Stud spacing
16 in. (400 mm)
24 in. (600 mm)