BEHAVIOR OF INDIVIDUAL STRUCTURES. 47 
SLOANE BUILDING. 
The seven-story Sloane Building, on Post street between Grant and 
Kearney streets, had bearing walls of terra cotta, brick and terra- 
cotta trimmings, and a framework of cast-iron columns and steel 
beams and girders. The partitions and fireproofing were of ex- 
panded metal, plastered, and the floors were of concrete, reenforced 
with expanded metal. All columns except those in the basement 
were fireproofed with expanded metal, plastered. 
There is every indication of a very hot fire in the basement, which 
buckled several of these unprotected columns, causing a collapse in 
the central portion of the building (PL XLIX, A). 
SPRING VALLEY WATER COMPANY'S BUILDING. 
The City of Paris Dry Goods Company occupied the two lower 
floors of the Spring Valley Water Company's building, at the south- 
east corner of Geary and Stockton streets, the remaining four stories 
being used for office purposes. The building, a general rear view of 
which is shown in PL L, ^4, had a steel skeleton, the partitions, column 
protection, and floor arches, the lower web of which spalled off exten- 
sively, being of hollow tile. The floor arches were topped with cinder 
concrete and covered with wood. The columns in the southeast corner 
of the basement buckled, and the upper stories collapsed. The hollow- 
tile partitions were in bad condition, and the 2-inch tile on col- 
umns failed generally. Where the tile ceilings were unprotected 
the webs spalled extensively; where there was a suspended ceiling 
remaining in position the tiles were in fair condition. The cast-iron 
stairways with marble treads were also damaged. There were a few 
slight earthquake cracks along the Stockton street side, and the south 
wall had a vertical crack. 
UNITED STATES SUBTREASURY. 
The four-story brick subtreasury building, on Montgomery street 
between Commercial and Clay streets, had rolling shutters on the 
lower front windows and a combination of wood and concrete floors. 
The wood burned, causing the collapse of that portion of the build- 
ing. The remainder of the concrete-floor portion seemed to be in fair 
condition. 
UNION TRUST COMPANY'S BUILDING. 
The Union Trust Company's ten-story office building, on the cor- 
ner of Market and Montgomery streets, was constructed with a steel 
frame. The front walls of the first two stories were granite; the 
