Today’s invention is a novel version of the humble brick.
This takes the form of a fired ceramic component with the geometry shown. It can be used in the normal way, enabling double-thickness walls to be constructed with integral, and therefore stronger, cross-ties between them.
This design uses less mortar, spreads stresses more evenly and, in the event that a single brick is actually needed, can be cut to size, as usual.
It might well need to be moulded with integral radii, so as to avoid the sharp edged stress raisers indicated at the junctions between the top and bottom halves.