A two-story restaurant, 115 ft by 105 ft, is of masonry (noncombustible) construction. A one- story office building, 75 ft by 55 ft, of masonry (noncombustible) construction is adjacent to the restaurant. The 115-ft wall of the restaurant with an entrance of combustible construction (open communication) faces the 55-ft blank brick wall of the office building at a distance of 48 ft. Two fire hydrants, each with one pumper and two hose connections, are located 200 ft and 500 ft from the restaurant and 350 ft and 450 ft from the office building. Calculate the NFF for each building, determine the duration required, and evaluate the proximity of the fire hydrants.
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