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

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CLINTON FLOOR ARCH
Tre7 tbar This TTogec1ion q, 11,ia has O 6en
proven time and again, but more particularly in
OF he seSersI i1oTai;ebs Of C5reste NV Trl FSIs
concrete, one part Portland cement two parts sand
and I'VE parts einders; for stone concrete one
Portland cement two and a half sand and i've
Until some three years ago there had not been
more than three Jobs done under this systematic
wire business had given this little attention: but
SS1noe having been paced before architects by Mr.
which It has entered: sanatorium Building, state
OF New-Jersey, George B. Post architect; Belvdere
Hotel. Baltimore. Parker & Thomas. architects;
coal pocket intake and discharge conduits Balt-
Guam and The Philippines Harbor Shed Building
cone million eight hundred thousand feet OF floors
and roofs, Montreal, Canada, John Kennedy, engf-
thousand feet) St. Johns Quebec. Canada; Prod
nest Flags. architect and Thompson-starrett Co,
EeW York Fae building New. York, DeeniOs 3
A C7idWeTi arcbf+ecf. ell NEUTRALITY-SUSPICIOUS. ~ w.,
york Central terminals in New York and at Port
peg Manitoba II C. stone Of ontreaI srchitect:
The new docks on East and North rivers. New
But perhaps the most novel use made OF the
SIln5on wire cloth as II Is sometimes called. was
by FaIkcr a Ihofnas architects Of Baltimore. in
damaged IN the great IRE by he fain o MAT q c ~
Eof5t If the tie arches os ali aooIe 'e az OF me
oered Il necessary TO secure better hreproof con-
FOR the piasterin Of the third oor CEILINGS a To a
oonaLlish these ends they adopted this new and
IN the foregoing Il has rot been possible 20 pro
is opponents; nor has space permitted the quoting
N ms uIaner az tse statements OF the adherents
Importance 70 the discussion IS necessarily reserved
bate '0'''' is" ''iisF contributions 10 the de-
To the charge that "a fine dust-the dried dust
and rubbish IN cinder rnixtures-is deposited upon
the sofht Of the arches" Thomas n. Vinton. Asso.
II. Am Soc c Z, conclusively answers that:
'C1nder concrete is always used in power housesi
- - esseati;,I Ln45 mere sna &c no dust from
A technical writer OF some reputation having
made the statement that Under no circumstances
would recommend endeE concrete for bearing
anv other form % steel @ iron Ross
a. Am Soc. C. z, replies with the pertinent Ques-
How. then. would he build z power house? Has
he ever built one Of terra cottag II so. where?"
The report Of Edward Atkinson. Director Of the
Insurance Engineering Experiment Station. Boston,
the oonhagrauon in Baltimore, contains several
valuable contributions 10 this discussion. II says:
most fully FIRE resistant when it IS made with true
Portland cement, ramTned and taInped IN a proper
concrete Of this kind IS subject law Of expansion
and contraction. under heat, nearly identical
with that Of steel as 70 assure its position being
maintained W Ter high and varying temperature.
bedded in Portland cement con erete that viii not
only resist FIRE but PTeyGnt corIosIon tney gsI55s
IN every city where many OF them now constitute
Terra Gotta has failed. The failure TO resist
high Temperature IS due both to me qIay OF {e
greater fault is that terra Gotta blocks plates and
other forms are detached ~ expansion in large
masses from the steel This is due 10 the fact Iadt
heat in sufficiently different ratios TO render such
Gotta parted from the steel or was practically oe.
and exact measurement made by Professor Norton
give the rule Of relative expansion ana contractlon
Professor c. /. Norton, Of the highest au-
thorities on this subject in America. in his report
SO SAID ar Atkinson on inc I-'-i"0'S como
.aThe lower face OF sofnt Of the tile has split
cent the terra Gotta door construction VII lind
between the tiles Is broken, quite generally ana
the tiles themselves are cracked ana AI fphe, "a
Concrete steel construction received the full force
q The re II appears 70 hEe s' ta icause the
concrete and steel expand az sensiey me same e
another 10 stress but terra Gotta usually EXPANDS
about twice fast with Increasing Pa sI ss
steel and hence the partitions ana noot aIc .i
5OoI ,eys Which under ordinary temperature prop
eriy iacose them. Under this condition. the par
titlon must buckle. ana me seg rIIsiine et The
same time the lower surface member Of the ties.
examination OF tie fApdaAIsos 49,
oinfs 10 them as the main source OF distress 70 L
whole beam and post covering. moor aIches az
TarfitfOus Most Of the fallen terra cottt pAtts
lions and the floor blocks. were sun ha iS a nd
tad = clear ring when struck though cftckso 80
trGken There WAS evidence OF any snch ZEN
erafure as that at which the terra Gotta NO i,i
heked originally and the material OF lhe DiOCN'
oo1,l5 NOT have been altered chemically, ...
T5r1fessor Norton also makes this efllheflt st
- Much has been said about the uncertain.
80 concrete. The value Of concrete ~ tneoIy y, ~
ce,en adufffea those who consider II uilHIse 70
sse il because OF the difficulty or getuns ne 4,
serIai rroDerly prOpOrtiOneds mixed anu az
,oeifion I have never been able 20 see lne LoIe .
- ms n Is quite as easy 10 lay sound cohels si
- Al a 20 nut somewhat Irregular ana ~
hrIffle blocks Of terra Gotta INTO pla,S ~ GCr
bonding. The main oiiLetsIlee s When n fails on
DuiiinR the centers while terra co., s.s, s1Sea
- - strong enough 20 hold Atse4S "a gVSas-S@ 49,
shsa itSs2 DO slitle iz7oEs-L A---