New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1905-04-30

concrete Of the following proportions: One Pert r
land cement; two, clean, sharp sand. and hve me
d 99r Is ti 10 reIet Voids or air spaces
The reinforcing is the Columbian steel ribbed bars
depend on the length OF span. The theory OF THIS
design is that it furnishes great Gead on II for
the concrete. The bar IS carried 10 the toP % ~
girder it transmits the shea!ing stresses IN me
form Of compression The design OF TINS par ea@
that it cannot become misplaced in the concrete;
tTon lateral brace to the structural steelwork
This steel reinforcing member enables the Coin-
proved by the New-York Buildings Department for
the span so saving both IN mateIial ana III SIoS
II is claimed for it that it is better adapted 70
long span construction than any other system. The
elimination Of ntermediate steel beams and a level
ceiling between Orders Wlthout iuIIlnsIL 'nS nc
soft Of the arch Is equivalent TO scratch coat OF
The accompanying excellent drawing conveys a
clear idea of the Columbian system ana, at me
yfl,t IL protects the containing members While
he one under the arch recorded Zoo degrees in
the air space under lower fange Of r. beam only
The following are selected from lengthy, though
partial, list Of buildings erected or N course OK
erection. by this company, Tor most OF me prom
inent architects of the country They are chosen
fhev are ali Of long span construction: Luzerne
County Court House, Wilkesbarre Penn r L.
York, Schickle 6; Dtmars architects; Christ Church
teeta library Building. south Hadey Mass Har-
Tison Building Cincinnati Gustav Dracb architect;
indianapolis PostoffiCe, Rankin, Kellos6 d Crane
architects; Majestic Apartment House. Phladel-
phia Joseph NJ. Huston architect; Senator w; A,
C,Iarlx's residence. NeW-YOrk Lord, Hewlett& HUH
architects; Long Island Storage Warehouse Brook
lyn. Hemle. Hubert * Hudswell architects, ana the
cadets quarters at Annapolis Ernest tlagg archi-
II is pertinent to add that the Columbian Fire
proofing Company. though its principal work is IN
concrete steel makes and sellS hollow tile floors.
Schmitzs testimony from the imputation OF preJu-
dice
Merrill Watson concrete-steel expert OF long
experience. makes the statement that;
IN New-York City excellent cinders. free from
,Inblrned coal can be readily Obtained II answer
TO (b), and adds that the power plants here are
turning them by the thousands OF cubic yards
daily and there IS not a sufficient demand Tor them
for building PURPOSES there is no excuse Tor using
inperfeCt or worthless, material ConceInlng
INC obtectiou (c) he has this "CtuderS from
well burned anthracite coal are. free from the
criticisms commonly leVelled at 'cinders.' When
,nixed in proper proportions. with good cement
and sand, they furnish fire resisting material not
excelled by anything in the world; many tests
made by Buildings Department or THIS city have
demonstrated this b-yond question Six or seven
wears ago cindeT concrete arches were submitted
O tests for five successive hours, sustaining
heavy loads under a temperature OF 1000 degrees.
furnishes an opportunity for Inexpensive and excel
lent performance in many places, and when the
concrete made OF this material Is properly put In
place better fTeprOQtng work Is possible. Its
Extensive use THROUGHOUT this country. and its
splendid performance under trying conditions are
q warrant for this statement
EXPANDED METAL
Mr.. Watson was one of the first to engage in
concrete steel construction, practically beginning