Illinois Society of Architects · Chicago · leaf 221
which in this illustration iameasured as shown by the perpendicular distancefrom the inside sidewalk grade of the street nearestthe building, to the highest point of the externalbearing walls. For exceptions, where elevator en-closures and cornices or bulkheads are used, seesection 640 b, last…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.