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Anchoring the TSR Bay
Due to its weight when fully loaded, the TSR system requires sufficient anchoring to maintain fault tolerance through earthquakes and to ensure against tipping. For more information, see "TSR Bay Dimensions, Weights, and Floor Loading".
Anchoring Methods
Each TSR bay must be anchored to the floor using one of three methods:
- Concrete floor method
- Raised floor with pedestal method
- Raised floor method without pedestal
CAUTION Concrete expansion anchors are required for anchoring TSR bays to the floor in all levels of earthquake zones from 0 to 4.
Anchoring Tools Required
The following tools are required for preparing the floor anchor holes.
- Safety goggles
- Ear plugs
- Reciprocating saw
- Hilti TE-25 or TE-52 hammer impact drill or equivalent and 18 mm carbide concrete drill bit
- Ball peen hammer (2-lb)
- 8 mm hex bit socket
- 24 mm socket
- 17 mm socket
- 19 mm socket
- 19 mm deep dish socket
- Ratchet handle
- 19 mm combination wrench
- Chalk line
- Tape measure 50-ft (15 m)
- Steel square
- Spirit level
- Plumb tool
- 3/8'' ratchet with a 3'' extension
- 1/2" diameter drill bit
- Electric hand drill
Floor Anchoring Procedure
This section describes the procedure required to prepare the floor for anchoring the system and installing the TSR bay.
NOTE Prior to installing the TSR, arrange with Avici Customer Service for a site preparedness survey. See "Support Services" in the Preface for Avici Customer Service contact information. The survey determines any preparations you must make to ensure your site can support installation of the TSR system. In addition, the survey will indicate any preparations Avici must make to prepare for installation.
Upon completion of your floor plan, mark the floor to indicate the installation position of each TSR bay.
Floor anchoring procedures described in this section are for the most common central office floor types. There are three installation procedures for a TSR. Select the procedure for the type of floor in your installation area:
- Anchoring to a concrete floor
- Anchoring to a raised floor with a pedestal
- Anchoring to a raised floor without a pedestal
Raised Floor Load Capacity
In raised floor installations, there are two methods used to anchor the bay. In the first method, the bay rests directly on the raised floor and is anchored to the concrete floor below using threaded rods. The second method requires that a custom pedestal first be anchored to the concrete floor and then the bay is anchored to the pedestal. The method to be used is determined by the load carrying capacity of the raised floor.
NOTE The maximum TSR bay configuration weighs approximately 635 kg (1400 lb). An engineering survey must be performed to determine the load carrying capacity of the raised floor. Based on this survey, a recommendation can be made that the load carrying capacity of the raised floor is adequate or can be reinforced, or that a custom pedestal needs to be used for the installation.
Pedestal Sizes
There are two pedestal sizes available for raised floor installations:
- 18" pedestal
- 12" pedestal
Make sure you have the correct size pedestal for the installation.
Before drilling holes or cutting tiles, ensure that you have the correct installation kit for your floor type. Contact Avici Customer Service if you have received an incorrect installation kit. See "Support Services" in the Preface for Avici Customer Service contact information. In addition, check to verify that all necessary parts are accounted for in your installation kit before installing the TSR system frame.
During floor preparation, observe the general safety precautions pertaining to personal injury and equipment damage outlined in your local office standards. Procedures in this document contain specific caution and warning information that must also be observed.
Anchoring to a Concrete Floor
Each TSR bay must be anchored for stabilization at all four corners. TSR bays are secured directly to concrete floors using four 12 mm (.47 in.) diameter expansion anchors that support earthquake loads in all zones from 0 - 4.
- Each bay has four primary anchor cutouts located at the base of the bay frame.
- Each bay uses an insulation pad. The insulation pad prevents unwanted ground loops by using a layer of insulating material under the corner pads.
- Each bay uses shims to level the bay. The shims are placed under the corner pads. Both A shims, 1.57 mm thick (.062-in.), and B shims, .787 mm thick (0.031-in.), are used to level the bay frame. Multiple shims are inserted under the corner pads as needed to level the bay.
Locating the Anchor Holes
PROCEDURE: Use the following steps to prepare the anchor holes for a concrete floor:
Step 1 Position the floor insulator pad as a template on the concrete floor in the precise location designated for anchoring the TSR bay.
- Figure 3-1 shows the floor insulator pad.
Figure 3-1. Floor Insulator Pad
Step 2 Trace the anchor hole locations from the cutouts on the insulator pad onto the concrete floor. Use the four corner locations and trace the entire oval shape of the anchor holes.
CAUTION To avoid injury, wear safety goggles while using the drill.
Step 3 Drill the anchor holes on the outer edge of the oval anchor-hole locations using a hammer drill and 18 mm carbide tipped concrete drill bit. If the drill hits a reinforcing bar, move the hole location to the inner end of the oval anchor-hole location.
Step 4 Clean each anchor hole thoroughly using a vacuum cleaner, with a narrow nozzle attachment to reach into the hole and remove all debris.
Step 5 Cover each anchor hole with tape (to prevent debris from entering the holes) until you are ready to anchor the bay.
Anchoring the Bay on a Concrete Floor
The following sections provide details on positioning and anchoring the bay on a concrete floor.
You must position each bay frame in its assigned floor placement and align the bay with existing bays in the equipment aisle or lineup (if applicable) before anchoring the bay to the floor.
PROCEDURE: Use the following steps to position, align and anchor the TSR bay:
Step 1 Locate the insulator pad on the floor surface aligning the anchor hole cutouts in the insulating pad with the anchor holes in the concrete floors. Refer to Figure 3-1.
Step 2 Position the TSR bay frame over the respective anchor holes in the insulating pad taking care not to move the insulating pad.
Step 3 Lower the custom dolly adjusters to the (approximate) final bay height.
NOTE Before placing the anchor bolts into the holes drilled into the concrete, make sure that the stack-up of the anchor is not loose. The spacer sleeve, plastic section, and expansion sleeve should not have any slack. If these parts are loose, make sure the tab in the plastic section is in the notch in the expansion sleeve, and lightly tighten the cone nut to remove any slack. Only tighten enough to remove slack, but do not start spreading the expansion sleeve or the anchor bolt may not fit into the drilled hole.
Figure 3-2. TSR Anchor Bolt (side view)
Step 4 Loosely install the four anchor bolt assemblies with an anchor washer, an anchor bushing, and an anchor bolt plate, as shown in Figure 3-3. If necessary, tap the anchor bolt until it is fully seated on the washer stack-up.
Figure 3-3. TSR Bay Anchors
Step 5 Check that the cabinet is vertically aligned, side-to-side, and front-to-rear within 0.25 cm (0.1 in.) of the bay height, using a spirit level or a plumb tool at the top of the frame.
Step 6 To level and align the bay, select and insert the final shims by:
- Checking the level or alignment of the bay
- Adjusting the dolly height to lift the bay for shim insertion, then lower the bay
- Adding shims as needed to the four corners to insure the bay is level side-to-side and front-to-rear to within .25 mm (0.1 in.)
Step 7 Remove the custom dolly from the bay before tightening the anchors.
Step 8 Using a 24 mm socket and ratchet handle, tighten the anchor bolts sequentially until the torque-limiting caps on the bolts snap off.
Anchoring to a Raised Floor With a Pedestal
The procedure for preparing raised floors is twofold:
- Prepare the raised floor tile to install the pedestal
- Prepare the concrete floor to anchor the custom pedestal
Figure 3-4. Custom Pedestal Dimensions
Measuring and Cutting Raised Floor Tiles
PROCEDURE: Use the following steps to prepare the removable raised floor tile to accommodate the TSR bay and custom pedestal:
Step 1 Remove a floor tile located directly above the area where you are planning to place the bay and ensure there are no cables or equipment below this area. Replace the floor tile.
Step 2 Using the floor insulator pad as a template, position the insulator pad on the top surface of the raised floor in the location designated for anchoring the bay.
- Trace the outline of the insulator pad with a marking pencil as shown in Figure 3-1. Figure 3-5 shows the TSR bay footprint. If cables to the TSR system will approach from below the raised floor, include the two 75 mm by 50 mm areas as shown in Figure 3-5.
Figure 3-5. TSR Frame Footprint
Step 3 Using the reciprocating saw, cut along the outer edge of the pattern you traced on the floor tile.
- A minimum area measuring 592 mm wide (23.3 in.) by 638 mm deep (25.1 in.) must be removed. A slightly larger area may be removed to accommodate edging material used to cover the raw edge of the tile.
Step 4 If cabling is to enter the bay from below the floor, remove portions of the floor tile corresponding to the 50 mm (1.9 in.) x 75 mm (2.9 in.) vertical cable areas at the front of the bay shown in Figure 3-5.
- Edging material is recommended in these areas to protect the cables from the sharp edges of the tiles.
Step 5 Remove and discard the area of tile over which the TSR bay will be anchored.
Step 6 Remove any partial tile pieces from the area taking care to mark their position in the raised floor for later replacement.
Step 7 Remove the appropriate raised floor supports and framing. The pedestal will support the edge of any tile that has been cut.
Drilling Holes in the Concrete Subflooring
PROCEDURE: Use the following steps to drill holes in the concrete subflooring:
Step 1 Position and align the custom pedestal within the hole in the raised floor. Ensure the large rectangular openings in the two opposing sides of the pedestal are at the front and rear of the bay.
Step 2 Using the pedestal as a template, trace the eight large hole (20 mm diameter) locations from the base of the pedestal to the concrete floor below.
Figure 3-6. Pedestal Anchor Hole Locations
Step 3 Remove the custom pedestal from the subfloor area and set aside.
CAUTION To avoid injury, wear safety goggles while using the drill.
Step 4 Using the Hilti hammer impact drill and 18 mm drill bit, drill the pedestal anchor holes in the concrete floor below the removable floor tiles. Drill to a depth of 102 mm (4 in.).
- Figure 3-7 shows the custom pedestal footprint.
Step 5 Clean each anchor hole thoroughly using a vacuum cleaner.
Step 6 Cover each anchor hole with tape (to prevent debris from entering holes) until ready to anchor the bay.
Figure 3-7. Custom Pedestal Footprint
Anchoring the Pedestal
PROCEDURE: Use the following steps to anchor the pedestal:
Step 1 Position and align the custom pedestal over the anchor holes carefully. Ensure the large rectangular openings in the two opposing sides of the pedestal are located where the front and rear of the bay will be positioned.
Step 2 Adjust the placement of the pedestal on the subfloor so that it is in alignment with the holes drilled in the previous section.
NOTE Before placing the anchor bolts into the holes drilled into the concrete, make sure that the stack-up of the anchor is not loose. The spacer sleeve, plastic section, and expansion sleeve should not have any slack. If these parts are loose, make sure the tab in the plastic section is in the notch in the expansion sleeve, and lightly tighten the cone nut to remove any slack. Only tighten enough to remove slack, but do not start spreading the expansion sleeve or the anchor bolt may not fit into the drilled hole. Refer to Figure 3-8.
Figure 3-8. Anchor Bolt (side view)
Step 3 Place each of the anchor bolts provided into one of each of the anchor holes in the pedestal and tap carefully, if required, to insert them all the way. Eight anchors (two in each corner) are required for Zone 3 and 4 earthquake applications. Use a 24 mm socket and ratchet handle to tighten the anchor bolts sequentially until the torque-limiting caps on the bolts snap off.
NOTE Minimum requirements for Zone 2 (or less) are four anchors (one in each corner). Minimum requirements for Zone 3 and 4 allow for two missing anchors, if they are missing from diagonally opposite corners.
Step 4 Attach the angle bracket to one side of the pedestal using the bolts supplied. Leave the bolts loose enough to allow movement of the angle brackets and hardware.
- Repeat this process for the angle brackets on all four sides of the pedestal. Figure 3-9 shows the tile support angle brackets.
Figure 3-9. Tile Support Angle Brackets
Step 5 Position each of the partial floor tiles around the pedestal and adjust the angle brackets so that the replaced floor tiles align level with the rest of the raised flooring.
Step 6 Use a 17 mm socket torque wrench to torque the tile support angle mounting bolts to 40 ft lb.
Anchoring the Bay to the Pedestal
PROCEDURE: Use the following steps to anchor the bay to the pedestal:
Step 1 Check that the upper surface of the pedestal is free of foreign material.
Step 2 Insert the insulator pad between the pedestal and the bay aligning the anchor holes in the insulator pad with those of the bay and with the holes in the top of the pedestal. Refer to Figure 3-10.
Figure 3-10. Bay to Pedestal Anchor Holes
Step 3 Position the TSR bay over the pedestal using the custom dolly taking care not to move the insulator pad.
Step 4 Lower the dolly adjusters to (approximate) final bay height.
Step 5 Loosely install the four anchor screw assemblies between the base of the bay and the pedestal. The screw assemblies include four M10 hexagonal head screws 60 mm long, with flat washers, insulating step washers, and plate washers, as shown in Figure 3-11.
Figure 3-11. Bay to Pedestal Screw Assembly
WARNING Use only the M10 socket head screws supplied with the pedestal. These are class 12.9 high strength fasteners. Substitution with any other fasteners can void warranties and constitute a safety hazard!
Step 6 To level and align the bay, select and insert the final shims by:
- Tightening (partially) each of the four bolts.
- Checking the level or alignment to the installed bay.
- Adjusting the dolly height to lift the bay for shim insertion.
- Adding shims as needed to the four corners to ensure the bay is level side-to-side and front-to-rear to within .25 mm (0.1 in.).
NOTE The recommended maximum height for shims is 13 mm (0.5 in.). The absolute maximum height for the shims is 19 mm (0.75 in.).
Step 7 Remove the custom dolly from the bay.
Step 8 Using a 8mm hex bit socket, torque the four anchor screw assemblies between the bay and the pedestal to 40 ft lb.
Anchoring to a Raised Floor Without Pedestal
This section provides details positioning and anchoring the bay directly on a raised floor without the use of a pedestal.
NOTE Prior to using this installation method, an engineering survey must have been performed to insure that the raised floor system has adequate load carrying capacity or that the floor has been adequately reinforced to support the weight of a fully loaded bay.
Locating the Anchor Holes
PROCEDURE: Use the following steps to locate the bay on the raised floor and locate and drill the anchor holes in the concrete subfloor.
Step 1 Position the floor insulator pad as a template on the raised floor in the precise location designated for the bay to be mounted.
- Figure 3-12 is a view of the TSR frame footprint that shows the orientation of the floor insulator pad.
Figure 3-12. TSR Frame Footprint
Step 2 Use the four corner locations and trace the entire oval shape of the anchor hole onto the raised floor surface. If power and ground, or system cabling is to approach the TSR from below the raised floor, include the shaded areas as shown in Figure 3-12.
CAUTION To avoid injury, wear safety goggles while using the drill.
Step 3 Drill holes in the outer corners of the oval anchor hole locations using a 1/2 in. drill bit. If cabling is to approach from below, use a reciprocating saw to cut and remove the areas for cabling.
- Edging material is recommended in these areas to protect the cables from the sharp edges of the cut tiles.
Step 4 Remove enough raised floor tiles around the area the bay is to be located to gain access to the concrete subfloor below. Do not remove any tiles that are marked, only adjacent tiles.
Step 5 Insert full length threaded rods through the four holes just drilled until they have reached the concrete below. Use a spirit level to adjust the threaded rod to be plumb. Move the level in two directions, 90 degrees to one another, to insure the threaded rod is plumb. Mark the location of the threaded rod on the concrete floor. Repeat for the three remaining threaded rods.
CAUTION To avoid injury, wear safety goggles while using the drill.
Step 6 Drill the anchor holes 69.85 mm (2.75 inches) deep in the concrete floor at the locations marked using a hammer drill and an 18 mm carbide tipped concrete drill bit.
Step 7 Clean each anchor hole thoroughly using a vacuum cleaner with a narrow nozzle attachment to reach into the hole and remove all debris.
Installing Anchors and Threaded Rod
PROCEDURE: Use the following steps to install the anchor bolts, cut to length, and attach the threaded rods that will secure the bay. Figure 3-13 illustrates the entire threaded rod and anchor bolt stack-up.
Figure 3-13. Threaded Rod and Anchor Bolt Stack-up
NOTE Before placing the anchor bolts into the holes drilled into the concrete, make sure that the stack-up of the anchor is not loose. The spacer sleeve, plastic section, and expansion sleeve should not have any slack. If these parts are loose, make sure the tab in the plastic section is in the notch in the expansion sleeve, and lightly tighten the cone nut to remove any slack. Only tighten enough to remove slack, but do not start spreading the expansion sleeve or the anchor bolt may not fit into the drilled hole.
Step 1 Install the four anchor studs into the holes drilled in the concrete. If necessary, tap the anchors until the washer is flush against the concrete.
Step 2 Using a 19 mm deep dish socket and ratchet handle, or a 19 mm combination wrench, tighten the torque limiting nut on the anchor stud until it snaps off. Repeat for the three remaining studs.
Step 3 Loosely assemble a lock nut and then a coupler nut to the anchor stud. Screw a threaded rod into the coupler nut that is on the anchor stud. The coupler nut should be adjusted so that it is half on the anchor stud and half on the threaded rod. Using a 19mm wrench, tighter the lower lock nut to secure the coupler nut to the anchor stud. Repeat for the three remaining anchors. Figure 3-14 shows the correct stack-up of the parts.
Figure 3-14. Anchor Bolts and Threaded Rod
Step 4 Mark all four threaded rods at 1 5/8 inches above where they extend from the top surface of the raised floor. Remove the threaded rods.
Step 5 Using a reciprocating saw with a metal cutting blade, cut the threaded rods to length as marked. Use a file to remove any burrs or sharp edges on the cut end of the threaded rod.
Step 6 Attach a lock nut to the end of the threaded rod approximately 1 1/2 in. from the end. On the other end of the threaded rod, attach another lock nut approximately 3 1/2 inches from the end. Slide an anchor washer over the same end of the threaded rod until it rests on the lock nut.
Step 7 From beneath the raised floor, insert the end of the threaded rod with the anchor washer and nut through the hole drilled in the raised floor. Screw the lower end of the threaded rod into the coupler nut on the anchor bolt. Tighten the lock nut on the lower end of the threaded rod, above the coupler nut, to secure the threaded rod to the coupler nut. Repeat for the three remaining threaded rods.
Step 8 Turn the nut at the top end of the threaded rod to move the anchor washer up toward the bottom surface of the raised floor tile until the anchor washer is just snug against the bottom of the raised floor tile. Loosen the nut one full turn to leave a slight gap between the anchor washer and the bottom of the raised floor tile. Repeat for the three remaining threaded rods.
Step 9 Replace all floor tiles previously removed to gain access beneath the raised floor.
Anchoring the Bay on the Raised Floor
PROCEDURE: Use the following steps to position the bay over the threaded rods and securing it to the threaded rods extending through the raised floor:
Step 1 Locate the insulator pad over the threaded rod extending through the surface of the raised floor. Make sure that the insulator is oriented with the front in the correct position.
Step 2 Raise the custom dolly adjusters until the bay frame will clear the threaded rod extending through the raised floor.
Step 3 Position the bay frame over the insulator pad and threaded rods until the oval slots in the base of the frame align with the threaded rods.
Step 4 Carefully lower the custom dolly adjusters until the frame is resting on the insulator pad and the threaded rods extend through the base of the frame. Be careful not to damage the threaded rods while lowering.
Step 5 Install the anchor bolt plate, anchor bushing, and anchor washer over the threaded rods. Figure 3-15 shows the correct stack-up of these parts.
Figure 3-15. Bay Anchor Stack-up
Step 6 Check that the bay is virtually aligned, side-to-side, and front-to-rear within 0.25 cm (0.01 in.) of the bay height, using a spirit level or a plumb tool at the top of the frame. If the bay is not aligned insert shims as follows:
- Adjust the custom dolly to slightly lift the bay enough to insert shims under the four corners as needed, then lower the bay until it is resting on the shims.
- Check the bay again for alignment.
- Continue raising and lowering the bay to add shims until correctly aligned.
- Remove the custom dolly from the bay before tightening the anchor nuts.
Step 7 Remove the custom dollies from the frame before tightening the anchor nuts.
Step 8 Install nuts onto each of the four threaded rods, and using a 19 mm socket and torque wrench, torque the four nuts to 22 ft lb.
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Copyright © 2001
Avici Systems Inc.
Avici® and TSR® are registered
trademarks of Avici Systems Inc.
IPriori™ is a trademark of Avici Systems Inc.
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Last Updated: 06/11/01 at 10:30:28
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