City requires that floors shall be proportioned to carry the following minimum loads per square foot : Office buildings, 100 Ibs. Topographic Maps and Sketch Mapping - Page v by James Kip Finch - 1920 - 175 pages Full view - About this book
...be neglected. 11. In climates corresponding to that of New York, ordinary roofs, up to 80 ft. span, shall be proportioned to carry the following minimum loads, per square foot of exposed surface, applied vertically, to provide for dead, wind and snow loads combined: Loads on...