Sectioned precast deck footings/ piers

An assembly for supporting structural weight comprising,

• at least two stacking units substantially identical in shape, wherein an upper portion of at least one first stacking unit fits securely into a recess defined in the lower portion of at least one second stacking unit;
• a footing unit wherein the base of the footing unit is wider than the base of the stacking unit and an upper portion of the footing unit matingly fits into the recess in the lower portion of the stacking unit,
• a rod with a first threaded section on a first end and a second threaded section on a second end, the rod sized to fit within an axial through channel in the stacking units and the footing unit, and of a length that when the assembly is assembled, the rod reaches from base of the footing unit to above the upper portion of the top most stacking unit;
• a flat metal plate having a hole;
• the hole being a the threaded hole in the metal plate sized to fasteningly screw onto the second threaded section on the second end of the rod;
• a recess defined in a central portion of the base of the footing unit such that the flat metal plate may fit securely within such recess;
• the recess defined in the lower portion of the staking unit sized such that the flat metal plate may fit securely within such recess;
• the stacking units and the base units being substantially comprised of precast concrete;
• the precast concrete having integrated metal structural support;
• a water barrier between the units such that ground water is prevented from seeping between the units under ground;
• the stacking units having an individual weight of between 20 pounds and 90 pounds;
• the footing units having an individual weight of between 30 pounds and 140 pounds;
• and the outer perimeter of a cross section of the stacking unit forming a bilaterally symmetric shape.