Tie Down Xi2 "IBC 2009 90 mph Exposure C Foundation System" - Manual

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REQUIREMENTS
• These plans and specifications meet the requirements of IBC 2009, 90 mph. Exposure C Wind Loads.
• Maximum wall height 14’, unless design loads adjusted accordingly.
• Main rail spacing must be 75.5” - 99.5”.
• Vertical anchor ties that are unique to design may be required by the manufacturer. These locations
may include shear walls, marriage line ridge beam support posts, and rim plates. The longitudinal
component of the Xi2 system replaces end frame ties. Check manufacturers set-up requirements.
• Maximum pier height is 48” pier.
• Steel piers must be fastened to the I-beam with clamps provided with steel pier.
• Systems must be placed as evenly as possible, no more than 10’ from end of unit.
• Designed for less than 10 degrees roof slope.
Additional Requirements for Concrete Systems
• Poured concrete must be 2,500 PSI minimum at 28 days.
• Square concrete pads minimum is 18” wide by 12” deep. Round concrete pads minimum is
18” diameter by 14” deep. Strip footings minimum is 18” wide by 14’ long by 6” deep.
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Xi2 Foundation System
Commercial Installation Instructions
for Ground & Concrete Systems
IBC 2009 90 mph Exposure C
By Tie Down Engineering