Cisco Systems the Cisco CRS-1 Carrier Routing System Line Card Chassis, Load weight rating

Chapter 3 Technical and Environmental Specifications

Equipment Rack Specifications

Table 3-2 8-Slot Line Card Chassis and Equipment Rack Specifications (continued)

		Load (weight) rating	The rack must support the following weights and specifications:
			• 650 lb (294.8 kg) single chassis with full cosmetics
			• 1300 lb (589.7 kg) two chassis, each with full cosmetics
			• 95 lb (43.0 kg) or more for each chassis for cabling
			• Additional weight of other components in rack
			Note ANSI specification T1.336 (2003), which defines static load
				and safety margins, recommends that racks be designed to
				support at least two times the anticipated load.
			Note See ANSI specification T1.329 (2002) for dynamic load
				requirements and earthquake resistance specifications.
		Chassis and rack footprint	5.9 sq. ft (0.55 sq. m), 23.6 in. rack width by 36 in. chassis length
		(floor contact area)
		Maximum floor loading	600 lb/4.5 sq. ft = 133 lb/sq. ft (without cosmetics or doors)
			272.2 kg/4134.2 sq. cm = .07 kg/sq. cm
			650 lb/4.9 sq. ft = 132.7 lb/sq. ft (with cosmetics and doors)
			294.8 kg/4580.1 sq. cm = .06 kg/sq. cm
			Note Be sure to include the weight of the rack when you consider
				floor loading requirements. The above numbers do not
				include rack weight.
		Rack Anchoring
		General considerations	• The rack must be bolted to the floor. For more information, see
				the Cisco CRS-1 Carrier Routing System Line Card Chassis
				Unpacking, Moving, and Securing Guide.
			• Consider floor and overhead anchoring requirements for the site,
				and size and load capacity of anchors and floor structure.
			• Make sure that floor mounting bolts are accessible, especially if
				annual retorquing of bolts is required.
		Floor mounting holes	•	Outrigger L-brackets:
				20.1-inch (51.0 cm) wide x 31.6-inch (80.3 cm) deep
			•	Internal frame holes:
				17.625-inch (44.77 cm wide) x 21-inch (53.34 cm) deep
			• For all other racks, check with rack manufacturer.
		Chassis Clearances
		Two chassis in a single rack	0.5-inch (1.27 cm) between chassis for horizontal shelf brackets
		Front and rear of chassis	40.4-inch (102.6 cm) for chassis installation
			36-inch (91.4 cm) for service access and airflow
		Inlet and exhaust openings on	6-inch (15.2 cm)
		chassis and power modules
		Top of chassis	No overhead clearance for a single chassis. Two chassis in a rack
			requires 0.5-inch (1.27 cm) between chassis for mounting rails.
	Cisco CRS-1 Carrier Routing System 8-Slot Line Card Chassis Site Planning Guide
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