Patent ID: 8615933

Claim:
A building block comprising: a reinforced concrete structure having four walls defining a hollow enclosure, said enclosure defined by an interior main surface of each said respective wall, each said respective wall further comprising an exterior main surface substantially parallel to each respective interior main surface, an upper surface and a lower surface; at least one J-bolt extending from at least one of said upper surfaces; at least one weld plate embedded and having an exposed surface substantially flush with at least one of said upper surfaces, each said weld plate having reinforcement steel attached to an embedded surface and extending into said concrete structure; at least a second weld plate embedded and having an exposed surface substantially flush with at least one of said interior main surfaces; at least one of said walls has at least one channel extending from said respective interior main surface to said respective exterior main surface, said channel extending to said lower surface of said respective wall; and at least one said exterior main surface having a side edge extending from said respective lower surface to said respective upper surface and configured to receive a seal.