BRICK BUILDING PRACTICE As an example of what is considered to be safe and conservative practice in the construction of piers, walls, and partitions of brickwork, the following sections arc reproduced from the New York Building Code of 1901. While building codes of other cities may vary somewhat in detail from the following, the main points are very similar, as may be seen from a glance at Table VIII, concerning required thicknesses of building walls in various cities.