Illinois Society of Architects · Chicago · leaf 242
all shall be built jointly upon thenew and old walls. If solid masonry but-tresses are Introduced in connection withsuch thickening and strengthening of exist-ing walls, the intervening wall may be re-duced to eight inches In thickness, provided such buttresses are sufficient in number andin area…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
