On the stability of brick chimneys

THE author has recently had occasion to report upon the stability of several designs for brick chimneys, which have been submitted to him for that purpose, and the following paper embodies the result of certain investigations which he carried out in connection therewith, and which it appeared might be of some general interest in their bearing on the usual form of building regulations governing this subject. The paper is divided into four sections: the first deals with the methods of determining the moment of stability of brick chimney shafts; the second deals with the question of wind pressure; in the third are given some examples of extsting chimneys; and the last contains a criticism of the regulations under which chimneys generally have to be built in this country, with suggested amendments. Harold Cane