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 . »t-^:i-:W*5^**;- j--^^**^! MERCHANTS EXCHANGE BUILDING. Showing a Roebling vault, with double stetl doors, which preserved itscontents perfectly. The walls and top are of solid concrete: the studs of 2 x J/ flat steel are sjiaced 10 on centres. Roebling1 solid rod stiffened wire lath is applied to both sides of the studs, and the space between the wire surfaces is filled solidwith
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 . »t-^:i-:W*5^**;- j--^^**^! MERCHANTS EXCHANGE BUILDING. Showing a Roebling vault, with double stetl doors, which preserved itscontents perfectly. The walls and top are of solid concrete: the studs of 2 x J/ flat steel are sjiaced 10 on centres. Roebling1 solid rod stiffened wire lath is applied to both sides of the studs, and the space between the wire surfaces is filled solidwith cinder concrete. The plaster is then applied to both sides, making a total thickness of 4 inches. The handles of thecombination lock of this vault fused, and it was impossible to open the door. The hole through the wall of the vault in thecentre foreground was made in order to get at the contents, and shows the details of the construction. There were no cracksin the walls or top of this vault. 164. C ^ m Oj 1 g Ch a c: o O o o 3 bj: a v 2 -0 a bj: ?S S T3 .a ^^- .X ?^ «: ^ f- .SP rt C S fcj: O C^ V. bt (L- ?^ ^ ^ ^ ;i^ — x ysp o bJO K ,_o r^ ^ o s f Q^ r/1 h ^ >: l! ^ O J yj O >—1 yj x , ^ ^ Oj c5 > ffi r >< plH q^ o 2 K t^ •^ .Q x P ^ Ch -r; Oj , ^ O — bij be h^ ^ C3 C ;j^ O r^ 0; (p X ? ?^ =4— ^ ^ i^ o =4- o !} rX o V 0 ^ O m - ffi :3 § Oj — 0^ ^ ^ c tf 0^ C ?^ C-i c .26 t-l ^C 0^ o c« o rn ^ 0) ^ C ?3 x -Q 165 and plaster protection of the columns stood well; the outercovering being only slightly damaged in some places, and theinner covering being unaffected. The concrete floors and wire lath and plaster ceilings are infirst-class condition throughout. The lintels over window headsare protected with cinder concrete, which served this purposewell. The lath and plaster partitions remain standing through-out, but in many places
Size: 1772px × 1410px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectear, booksubjectfires
