The OZ-Deck Foundation System 12 in. x 12 in. Deck Plate OD-T4 is an accessory for the T4-850 and T6-700 OZ-Post to provide load bearing capacity required for deck construction. OZ-Deck provides the same strength and stability of conventional construction techniques with less labor and lower cost. Installation is easy; simply locate the deck plates where your posts are required and drive the OZ-Post through them. The jackhammer installation method makes installation fast and also compacts the soil beneath the plate to prevent the OZ-Deck from settling over time. The revolutionary design of OZ-Deck allows them to be utilized in soft terrain and also in regions that are subjected to freeze-thaw conditions. The OD-T4 meets ICC (International Code Council) IRC-2006 (International Residential Code for one- and two-family dwellings 2006) 2006 IRC, R403.1.4.1 Exception 3 and has been independently tested with loads exceeding 6500 lbs.