KAHN SYSTEM
REINFORCED CONCRETE
AND THE
SAN FRANCISCO DISASTER
The following letter from Ralph W. Hart, Architect, of San
Francisco, addressed to the Trussed Concrete Steel Co., tells an important story:
“Will you kindly send me at once your booklet with tables of your Kahn Bar
Beams and Floors ? My copy, with everything else I had, is gone.
“You may be interested to know that the warehouse I have under construction here, using your bars, is up two stories, the third floor slab being finished four days before the earthquake, and that not a crack of any kind is visible in the columns of first story
beams and slabs of second floor. I made as careful an examination as possible, from the floor, and am more than delighted with its condition.
“ Because of outside influence, the City authorities refused us permit for this building until we conceded brick outside walls. These walls are so badly cracked that probably one-third of same must be rebuilt. If we had had reinforced concrete outside
walls, I am confident that the earthquake would have done no damage whatever to this building.
‘ ‘ In addition to booklet of beams and slabs, any suggestions your Engineer may send
me relative to earthquake-proof construction will be gratefully received.
“You will sell some bars in this city the coming year.”
Other reports are coming in, which show that in every instance structures built of concrete, reinforced according to the Kahn System, presented the greatest resistance to the earthquake shocks.
WRITE US FOR FURTHER DETAILS
TRUSSED CONCRETE STEEL COMPANY
35 Congress Street
Detroit, Michigan, U. S. A.
Offices in all principal cities
REINFORCED CONCRETE
AND THE
SAN FRANCISCO DISASTER
The following letter from Ralph W. Hart, Architect, of San
Francisco, addressed to the Trussed Concrete Steel Co., tells an important story:
“Will you kindly send me at once your booklet with tables of your Kahn Bar
Beams and Floors ? My copy, with everything else I had, is gone.
“You may be interested to know that the warehouse I have under construction here, using your bars, is up two stories, the third floor slab being finished four days before the earthquake, and that not a crack of any kind is visible in the columns of first story
beams and slabs of second floor. I made as careful an examination as possible, from the floor, and am more than delighted with its condition.
“ Because of outside influence, the City authorities refused us permit for this building until we conceded brick outside walls. These walls are so badly cracked that probably one-third of same must be rebuilt. If we had had reinforced concrete outside
walls, I am confident that the earthquake would have done no damage whatever to this building.
‘ ‘ In addition to booklet of beams and slabs, any suggestions your Engineer may send
me relative to earthquake-proof construction will be gratefully received.
“You will sell some bars in this city the coming year.”
Other reports are coming in, which show that in every instance structures built of concrete, reinforced according to the Kahn System, presented the greatest resistance to the earthquake shocks.
WRITE US FOR FURTHER DETAILS
TRUSSED CONCRETE STEEL COMPANY
35 Congress Street
Detroit, Michigan, U. S. A.
Offices in all principal cities