Vertiv Liebert MCM080 - 10 LIEBERT SEISMIC APPLICATION- OPTIONAL UNIT CONFIGURATION; 10.1 Seismic Anchoring Considerations

10 LIEBERT SEISMIC APPLICATION—
OPTIONALUNITCONFIGURATION
10.1 Seismic Anchoring Considerations
• Mounting requirement details such as anchor brand, type, embedment depth, edge spacing,
anchor-to-anchor spacing, concrete strength, special instruction and attachment to non-
building structures must be outlined and approved by the engineer of record for the project or
building. Structural floors and housekeeping pads must also be seismically designed and
approved by the project or building structural engineer of record to withstand the seismic
anchor loads defined in Table 10.1 on the next page. The installing contractor is responsible
for the proper installation of all anchors and mounting hardware, observing the mounting
requirements detailed in the seismic installation drawings as outlined by the engineer of
record.
• All braces and fasteners are required to maintain IBC/OSHPD certification of conformity.
• Use a washer, lock washer and screw to connect the brace to the bottom beam of the
condenser. (See Figure 10.2 on page102.)
• Use a washer, lock washer and screw to connect the brace to the condenser leg. (See Figure 10.2
on page102)
• Place anchorage plate inside each condenser foot of 18-in. legs prior to fastening to the
structure. MC condensers with 36-in., 48-in. or 60-in. legs do not require separate anchorage
plates for the legs. Use a flat washer, lock washer and nut to connect the condenser to the
customer-supplied anchor on the solid surface (reference Detail A in Figure 10.1 on the next
page). As a minimum, 3/8” grade anchors with American National Standard Series W, Type A,
plain washers (ANSI B18.22.1-1965, R1975) selected to match the nominal anchor diameter must
be installed at each anchor location between the anchor head and equipment for tension load
distribution.
Vertiv | Liebert® MC™ Installer/User Guide | 99