User's Manual

GSM/802.11b RadioFrame System Method of Procedure

Pre-Installation

RadioFrame Networks, Inc.

• If the drywall is on steel or wooden roof joists, locate and tap into the roof joist with

lag bolts.

• C-channel mounting can be used.

• An alternative to C-channel mounting is using large toggle or molly wings with hex

head tap bolts.

NOTE: Make certain joists are properly located before drilling into drywall.

3.3.1.7 Seismic Anchoring

Seismic anchors are designed, tested, and specified for seismic zones 3 and 4. Seismic

anchors enhance the stability of equipment due to the special characteristics specifically

suited to the dynamic and cyclic

loading effects experienced during earthquake events.

As such, anchors shall be used that are manufactured to particular specifications that

make them the most resistant to the effects of dynamic and cyclic loading effects.

Selected anchors shall meet standards set forth in NESS (Network Equipment

Building

Systems) TR-64 and ASTM (American Society For Testing and Materials) 488-90 for

earthquake compliance. This testing evaluates anchors for bolt failure from shearing and

from pullout or slippage. Compliance with these standards requires that the anchor not

allow a standard top heavy 7 ft. (2.2 m) rack to have a deflection greater than 3 in. (7.6

cm) at the top of the frame. This compliance will also adhere to Bellcore Technical

Specifications AU-434 for earthquake concrete expansion anchors.

Anchor selection criteria shall comply with all general requirements for standard concrete

anchors plus meet the above seismic requirements. All seismic anchoring shall be

enhanced with top cabinet or rack bracing.

Seismic Considerations

All RadioFrame Networks equipment is seismically rated to withstand vibrations of a

Level 3 earthquake. The property owner is responsible for any damage to RFN

equipment due to building or rack structures that are not rated to withstand vibrations of a

Level 3 earthquake, or not secured to withstand vibrations of a Zone 4 earthquake.

Site protection from earthquakes may be required in certain areas. Typically, this would

be an area having historical data indicating a Moment Magnitude rating of 3 or 4. Note

that areas other than historically prone areas may need consideration. Obviously,

addressing such concerns results in increased costs of equipment installation.

A certified architect specializing in earthquake-resistant installation shall be consulted for

seismic designs and recommendations in areas where the potential loss of the site may

outweigh associated costs of earthquake-resistant design. In the United States, it is

recommended to consult the US Geological Survey for more information regarding

earthquake probability and historical data for various areas. In other areas, similar

consultation should be done.

• The US Geological Survey information can be accessed at:

http://geohazards.cr.usgs.gov

• Seismic maps are available at:

http: //www.neic.cr.usgs.gov