This section is from the book "A Treatise On Architecture And Building Construction Vol2: Masonry. Carpentry. Joinery", by The Colliery Engineer Co. Also available from Amazon: A Treatise On Architecture And Building Construction.
272. Brick piers are built in the same manner as brick walls. When they are less than 3 feet square, and support a beam, girder, arch, column, or lintel carrying a wall, the piers should, at intervals of not over 30 inches in height, have built into them bond stones not less than 4 inches thick, or cast-iron plates of sufficient strength and the full size of the piers. In height, isolated brick piers should not exceed 12 times their least square dimension.
Fig. 125 shows a brick pier with 1-inch iron bonding plates at a, and the stepped-up brick foundation and concrete base at c and d.