US Government As Represented by the Secretary of the Army

Ballistics Technology International Ltd.

James E Sigurdson

Philip Garcin Malone

Charles Arthur Weiss, Jr

Dennis L Bean

John T Sutton

The present invention discloses an attachment system for use in a building comprising a plurality of first wall sections, a plurality of horizontal planks resting on the first wall sections, and a plurality of second wall sections resting on the horizontal planks. The system includes a plurality of threaded rods holding the system together, and may be made of concrete or similar material. The system may be disassembled and reassembled without affecting the structural integrity of the building.

Removable attachment system for buildings

A method of forming low lead leaching foamed concrete is provided. The method includes the step of dry mixing cement with a suspending agent to form a dry mixture. Water is mixed with a fine aggregate to form an aqueous mixture. The dry mixture is mixed into the aqueous mixture to form a slurry. Calcium phosphate is mixed into the slurry until all constituents are throughly distributed throughout the resulting mixture. The density of the resulting mixture is determined and an aqueous foam is added to the resulting mixture until the density of the resulting mixture is reduced to a desired level. Fibers are mixed into the resulting mixture until the fiber is distributed throughout the final mixture. The final mixture is placed into a mold. The mixture is allowed to harden and cure.

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Toronto, Canada

James E Sigurdson