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Floor and roof mounted equipment need to be braced to the building to resist seismic and wind forces. The anchorage should be selected based on the unit type and the building’s features. Attachment to a wood floor system might utilize lag bolts while expansion anchors would be more common for a concrete floor. Also, it is best to utilize the mechanical unit’s anchor holes or tabs rather than installing new ones. Manufacturer cut sheets will often show the recommended attachment locations.
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