How was the father described physically in Cheaper by the Dozen?

In the biographic novel Cheaper By The Dozen by Frank Bunker Gilbreth Jr. and Ernestine Gilbreth Carey, the father, also names Frank Bunker Gilbreth, is described physically as being a very heavy and very tall man who has an outward appearance of great confidence. His appearance is a representation of his character, that of a successful businessman, a trained engineer, and a masterful manager of time. The description of Mr. Gilbreth is somewhat akin to what could be expected of a somewhat buttoned-down foreman of the early twentieth century, which is very much appropriate for a man who feels that it is possible to run and manage a family in much the same way that one would run a factory.