Foam as modular support

A wall comprising:

• a plurality of base blocks stacked to form a bottom portion of the wall, each of the base blocks comprising a bottom surface, a top surface, a front surface, a back surface, sidewalls, and cavities extending through each base block from the bottom surface of the base block to the top surface of the base block, the cavities being aligned vertically across rows of the base blocks;
• and
• a plurality of header blocks stacked on a top row of the base blocks to form a top portion of the wall, each of the header blocks comprising a bottom surface configured to mate with the top surface of the base blocks, a front surface, a back surface, sidewalls, and an upward-facing channel positioned between the sidewalls of the header block,
• wherein each of the header blocks comprise mating protrusions extending from a top surface of each of the sidewalls that are vertically aligned with the cavities of the base blocks, wherein the mating protrusions of the header blocks each taper towards an uppermost edge thereof,
• wherein each of the base blocks comprise connective components extending upward from the top surface of the base block,
• wherein each bottom surface of the header blocks comprises recesses configured to receive the connective components of the base blocks, and
• wherein the base blocks and the header blocks are each composed of a polymer foam.

A wall comprising:

• a plurality of base blocks stacked to form a lower section of the wall, each of the base blocks comprising a bottom surface, a top surface, a front surface, a back surface, sidewalls, and six cavities extending through each base block from the bottom surface of the base block to the top surface of the base block;
• and
• a plurality of header blocks stacked on a top row of the base blocks to form a top portion of the wall, each of the header blocks comprising a bottom surface configured to mate with the top surface of the base blocks, a front surface, a back surface, sidewalls, and an upward-facing channel positioned between the sidewalls of the header block,
• wherein each of the header blocks comprise six mating protrusions extending from a top surface of each of the sidewalls, each of the six mating protrusions being vertically aligned with a respective cavity of the six cavities of the base blocks, wherein the mating protrusions of the header blocks each taper towards an uppermost edge thereof,
• wherein each of the base blocks comprise connective components extending upward from the top surface of the base block,
• wherein each bottom surface of the header blocks comprises recesses configured to receive the connective components of the base blocks,
• wherein the sidewalls of the base blocks and the sidewalls of the header blocks each have uniformly smooth exterior surfaces, and
• wherein the base blocks and the header blocks are each composed of a polymer foam.