US Patent Issued to TBT Engineering on Nov. 25 for "Shear resistant drain system for improving weak foundation soils" (Canadian Inventor)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,260, issued on Nov. 25, was assigned to TBT Engineering Ltd. (Thunder Bay, Canada).

"Shear resistant drain system for improving weak foundation soils" was invented by Gordon Christopher Maki (Thunder Bay, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Shear drain devices are used to prepare ground with a weak soil layer to receive a static load, for example a structural foundation or a soil embankment, in which the ground includes a weak soil layer that consists of fine grained soils over a base layer. Each shear drain devices each include an elongate perforated pipe member, a surrounding reinforcement member providing tensile reinforcement a...