The San Francisco earthquake and fire; a brief history of the disaster; a presentation of facts and resulting phenomena, with special reference to the efficiency of building materials, lessons of the disaster . n, the ^/v. V ribs offsetting the sur-face \-_i from the column. Plaster of Paris was then appliedto the lath, filling in the sjjace solidly between the wiie surfaceand the colunni. A solid coat 1 ^ {; thick of plaster of Pariswas then applied outside of the wire lath surface. There are no partitions in the first story of this Ijuilding. Thesoffits of the girders are protected by lath a
The San Francisco earthquake and fire; a brief history of the disaster; a presentation of facts and resulting phenomena, with special reference to the efficiency of building materials, lessons of the disaster . n, the ^/v. V ribs offsetting the sur-face \-_i from the column. Plaster of Paris was then appliedto the lath, filling in the sjjace solidly between the wiie surfaceand the colunni. A solid coat 1 ^ {; thick of plaster of Pariswas then applied outside of the wire lath surface. There are no partitions in the first story of this Ijuilding. Thesoffits of the girders are protected by lath and plaster. Effects of the Fire and the Earthquake: The sand-stone ornamentation of the entire front is badlyspalled. There is a characteristic earthquake crack at thefourth story near the centre. The pressed red brick is ingood condition throughout. The north wall is cracked at severalplaces by the earthquake. This building was subjected to only a moderate fire. Twodouble reinforced concrete beams in the basement are badlvdamaged, the concrete having fallen away, exposing six 1square section Ransome twisted steel bars. In one bay four-teen consecutive reinforcing bars are exposed in the floor slab. 184. ACADEMY OF SCIENCE BUILDING. The upj)er view, taken in the basement story, shows the failure of areinforced concrete beam. The fire spalled off the concrete on the under side of the beam and exposed six of the 1 squaresection twisted This concrete beam still supports the wall above it, but is badly cracked. The lower view, taken in the first story, shows fourteen consecutive | square .section Ransome rods, which havebeen exposed by the falling away of the concrete protection under them. Only a moderate fire caused the spalling of theconcrete in both cases. 185
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectear, booksubjectfires
