Illinois Society of Architects · Chicago · leaf 179
than 5 inches external diameter and metalnot less than i^ inch thick, free from blow-holes and defects. Columns to rest on 12 by 12 inch iron plates 1 inch thick, firmly bedded in a con-crete foundation not less than 18 inches thick and having a surface bearing not lessthan 4 square feet. The top…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
