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 . case of distorted steel woi-k, it was, in many cases, imi^ossible to determine in what manner theconnections had been wrenched out of ])osition; that is, whether the angles or lugs failed or whether the rivetsand bolts sheared; these details, in all cases, being coxered u]) by building materials. In the ease of extensivefailures in the lower stories of some of the buildings, the debris
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 . case of distorted steel woi-k, it was, in many cases, imi^ossible to determine in what manner theconnections had been wrenched out of ])osition; that is, whether the angles or lugs failed or whether the rivetsand bolts sheared; these details, in all cases, being coxered u]) by building materials. In the ease of extensivefailures in the lower stories of some of the buildings, the debris surrounded and com])letely covered the points offailure. INIueh \aluable information and data in connection with these failures will no doubt be ascertained later,after the obstructions and over-burdens have been removed. Cast-iron columns were used in some of the fire-jHoof buildings and were generallyem])loyed in the Class B buildings. On account of less rigidity in the methods of fram-ing in connection with cast-iron columns, they should not be used in high buildings in the future. Underabnormal strains, as, for example, when columns buckled so as to warj) the framing, the lugs frequently snapj^ed Ul. WAREHOUSE. Beale Street, between Howard and Folsom Streets, oecupied by The Dunham, Harrigan and HaydenCompany. Showing the etiect of an intensely hot fire whicli destroyed cast iron columns. The metal where the columns havebeen severed is very little thicker than ordinary pasteboard. 24S and permitted the framing to fall away and wreck whole sections of certain Vov low Jniildintrs, incases where the cohnnns are to be left exi)osed, and other special conditions, cast-iron columns may sometimes beused to ad\-antae. They are sliohtly less affected by heat than steel columns when unprotected. Theburniny of the Class B and other larye buildings with wood interiors, generally jnodueed higher tem-peratures than the contents of the lire-jH-oof buildings. There were numero
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectear, booksubjectfires
