The invention includes a method for constructing buildings using non-wood construction
products and buildings constructed from such non-wood construction products. The
invention further includes a method and apparatus for manufacturing high-performance
fiber-reinforced cellular concrete (HPFRCC) products and the use of such products
as replacements for conventional wood lumber construction products. The products
of the invention have the necessary strength, durability, nailability, and sawability
for direct substitution for dimensional wood lumber in wood-frame construction
applications. The invention also includes externally reinforced retaining wall
systems that include stackable blocks formed of fiber-reinforced cellular concrete.