Figure 19. Service clearance requirements
v Cut the necessary holes and cable cutouts in the raised floor.
v Purchase and install eyebolt fasteners in the concrete floor.
Nonraised floor
Purchase and install fasteners in the concrete floor.
Further instructions for the preparation of your site for the Earthquake Resistance Kit are provided in “Preparing a raised floor for the Earthquake Resistance Kit installation” and “Preparing a nonraised floor for the Earthquake Resistance Kit”
on page 127.
Preparing a raised floor for the Earthquake Resistance Kit installation:
You must prepare a raised floor as well as the concrete floor underneath before an Earthquake Resistance Kit can be installed on any of your storage units racks.
To ensure that you meet all site requirements, obtain the service of a qualified consultant or structural engineer to help you prepare the floor.
Figure 20 on page 125 provides an illustration of the Earthquake Resistance Kit after the IBM service representative installs it for a raised floor. Before the IBM service representative installs the kit, you must prepare the area shown as 2 in the figure.
Use the following steps to prepare your raised floor:
1. Cut the following openings in the raised floor for each rack that uses an Earthquake Resistance Kit:
v Four holes for the rubber bushings of the kit to fit through the floor v One cable cutout for power and other cables that connect to the rack Use Figure 21 on page 126 as a guide for the location and dimensions of these openings.
Figure 20. Earthquake Resistance Kit, as installed on a raised floor
2. Obtain four fasteners that are heavy duty concrete or slab floor eyebolts. These eyebolts are used to secure the Earthquake Resistance Kit. Work with your consultant or structural engineer to determine the correct eyebolts to use, but each eyebolt must meet the following specifications:
v Each eyebolt must withstand 3600 lb pull force.
v The dimensions of the eyebolt must allow the turnbuckle lower jaw of the kit to fit over the eyebolt (1 on Figure 22 on page 127) and allow the spacer of Earthquake Resistance Kit to fit inside the eye (2 on Figure 22 on page 127).
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147.0 (5.8)
457.0 (18.0)
708.0 (27.9)
178.0 (7.0)
751.0 (29.6) 40.0 (1.6)
Holes in raised floor and locations of eyebolts
on concrete floor Raised floor cable cutout
Raised floor cable cutout
Frame front Frame front
131.0 (5.2)
2.0 (0.8)
150.0 (5.9)
Raised floor hole diameter 49.4 (1.95) Holes in raised floor and locations of eyebolts
on concrete floor
Figure 21. Locations for the cable cutouts and rubber bushing holes in the raised floor and the eyebolt installation on the concrete floor. The pattern repeats for up to five models.
Dimensions are in millimeters (inches).
3. Install the eyebolt fasteners in the concrete floor using the following guidelines:
v Use Figure 21 on page 126 to determine the placement of the eyebolts. The eyebolts must be installed so that they are directly below the holes that you cut in the raised floor for the rubber bushings.
v Ensure that the installed eyebolts do not exceed a height of 101 mm (4 in.) from the floor to the center of the eye. This maximum height helps to reduce any bending of the eyebolt shaft.
v Ensure that the installation allows the eyebolts to meet the required pull force after they are installed (3600 lb pull force for raised floor eyebolts).
v If you use a threaded eyebolt that secures into a threaded insert in the floor, consider using a jam nut and washer on the shaft of the eyebolt. Talk to your consultant or structural engineer to determine whether a jam nut is
necessary.
Preparing a nonraised floor for the Earthquake Resistance Kit:
You must prepare a nonraised floor before an Earthquake Resistance Kit can be installed on any of your storage units racks.
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Spacer Shaft
Eyebolt
Lower Jaw
Lower Jaw
Side view of eyebolt Lower jaw
opening 1.8 (0.71)
Spacer 2.86 (1.13) 1
2
Washer Jam nut
Figure 22. Eyebolt required dimensions. Dimensions are in millimeters (inches).
To ensure that you meet all site requirements, obtain the service of a qualified consultant or structural engineer to help you prepare the floor.
Figure 23 provides an illustration of the Earthquake Resistance Kit (1 in the figure) after the IBM service representative installs it on the nonraised floor. Before the IBM service representative installs the kit, you must prepare the area shown as
3 in the figure.
Use the following steps to prepare your nonraised floor:
1. Obtain six fastener sets for each rack that uses the Earthquake Resistance Kit.
These fastener sets are used to secure the Earthquake Resistance Kit load plate.
The type of fastener set that you use can be determined by your consultant or structural engineer. However, each bolt or stud must meet the following specifications:
v Each fastener set must withstand 2400 lb pull force.
v The fasteners must have a dimension that fits into the load plate holes, which are each 27 mm (1.0 in.) in diameter.
v The fasteners must be long enough to extend through and securely fasten a load plate that is 30 mm (1.2 in.) thick. The fasteners must also be short
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Load Plate Support Nut Leveler Nut 1
Earthquake Resistance
Kit
Rack Stud
2 Provided to IBM Service representative
Bolt and washer screwed into floor
Nut and washer installed on stud Required
preparation 3
Figure 23. Earthquake Resistance Kit, as installed on a nonraised floor. The detail shows two of the most common fasteners that you could use.
enough so that the height of the installed fastener does not exceed 65 mm (2.5 in.). This maximum height ensures that the fastener can fit under the rack.
The following examples provide descriptions of nonraised floor fastener sets:
v Threaded hole insert that is secured into the concrete floor and a bolt (with a washer) that screws into the insert
v Threaded stud that is secured into the concrete floor with a nut (with a washer) that screws over it
Figure 23 on page 128 shows illustrations of the example fastener sets.
2. Work with your consultant or structural engineer and use the following guidelines to install the fasteners in the concrete floor:
v Use Figure 24 to determine the placement of the fasteners.
v Ensure that the installed fasteners do not exceed a height of 65 mm (2.5 in.) from the floor. This maximum height ensures that the fastener can fit under the rack.
v Ensure that the installation allows the fasteners to meet the required pull force after they are installed (2400 lb pull force).
v If you use a threaded bolt that secures into a threaded insert in the floor and the bolt extends longer than 30 mm (1.2 in.), which is the thickness of the load plate, consider using a jam nut and a washer on the shaft of the bolt so that the load plate can be secured snugly to the floor. Talk to your consultant or structural engineer to determine whether a jam nut is necessary.
FRAME OUTLINE
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FRAME FRONT
FRAME OUTLINE 416.1 (16.4)
882.1 (34.7) FRAME TO FRAME SPACING
FRAME REAR FRAME REAR
CABLE OPENING IN FRAME CABLE OPENING
IN FRAME
FASTENERS
BASE RACK EXPANSION RACK
FRAME FRONT 609.6(24.0) 227.0(8.9)
304.8 (12.0) 304.8 (12.0)
FASTENERS
Figure 24. Locations for fastener installation (nonraised floor). The pattern repeats for up to five models. Dimensions are in millimeters (inches).
3. When the IBM service representative arrives to install the Earthquake
Resistance Kit, provide the other fastener parts (2 in Figure 23 on page 128) so that the representative can use these parts secure the load plates onto the floor.