The sun. [volume] (New York [N.Y.]) 1833-1916, 1882-03-12

c had fallen. The distance from to is 10
the top of the roof Mt b. where the proper
straight line is continued ON line with the
1t mus; be borne in mind that the outside Of
the tunnel Is an ron pipe and that ilie inside ii,
a sewer. 1t is intended to run two of these
brick tunnels across the river side by side.
Ie F3n Es Is Ppt np by Tydfns qGGhe
pace " it viii be Impossible to build the inside
to be. the fact with reference to the present
peculiar condition of the section OF the roof
posSn the Wes of the river bed p wa a
too much for the braces that had been put
the masonry was put in. In explanation Of the
present state Of the roof in this respect. First
Of the work on 18Th sides Of the river. said: o.
It is by no i+tans All unusual occurrence
done in this case, The masonry did not fall.
as it appears to have done but was built up
TO support the plate temporarily. rs meas.
haSe time to attiisnI &c tho matter We expect
shall take down s asonry take out the
paatf ,bo and Rs lack IN the SO rh
such a way thai the monding can hardly be
perceived The reason that this was not done
With that Part q tho headIsg which had alrsady
been excavated before this detection OF the
ever in the method of doing the work. On the
contrary it Is the safest way, OF doing it. OF
IN their proper, position at first and kept thore,
But. owing TO the great weight above. il is not
nas sd fer the Plates aas ob IL sf pnsase @ of
nac We were to stop to fix up eyery such de-
exposed than is necessary. On Dec. there
extent. On that occasion did exactly
what we. shall do now, We built up the mason
son and then Went BACK T AND xdpd fo the de-
ileeted place: do not think the present case
day and / certainly should not risk my liz
there II thought there was imminent danger.
saSs so %Sn Of h bh yss bd that
number of instances where We have taken
out parts Of the masonry and the plating and
observed unless pointed out No case has hap
Pened where the mnsonry has drpoPped. as it
ence Of dropping would naturally. deceive any
one one not familiar with the work. But We have
simply butt n short section OF the arch fatter
to the DETECTED plates.
a, Although there may seem to be danger in
the TACT that the masonry was not joined al the
part whore we resumed building the tunnel on
the proper lines. the fact is that such an open
OF the silt surface into which we are boring il
H. true. but an infinitely greater portion is
the work. The compressed air will keep the
water and silt out at this point as we'll ms at the
htbs s whrH the St rs always exposed before
TfepaiL'H ~ safely as You can take one hoop
t h hnrisi 9ni replaee i with another. In
common occurrence for u section of masonry
TO be Dullt and to disappear and to DO replaced
IT is true that this DETECTION Of the plates
can BIO discovered. and ought to have been dis
been progressing so rapidly and safely that the
men have got a little careless. But such Q spot
Impede the progress Of Tie work materially i
shall put on five or sin men, and make the re
CURED change at leisure. Now that the pilot
ahead and brace up from the lower part OF the
tunnel, which Is all right. The part to be taken
the tunnel to the spring Of the arch"
Gen. Sooy smith, when asked his opinion Of
think il was dangerHns. and that now the ma.
S s91y hai been put up TOWARD the working end
would be SUFFICIENT TO keep back the silt until
t thhs roof could be repaired, He had regarded
sae masonry put in Under the DETECTED defect plates
that tho tunnel could not be completed success
fully on the plan now in use, he said he would
engineer, that II safer and less risky plan to the
Ives 81 n, ne workingn SHOULD be adopted In that
PAT Of me work where the material to be pene;
air filters through 1t and the water leaks
a. T. Cen Smith e e the utmost conll-
iul completion whichever plan is used. but
since he would be held responsible if he con
tnues in charge OF the work. he prefers his
own MAN, which Is ~ new and untried method
oil building a tunnel. 1t consists Of sinking
SeaiaSons side by side along the route Of the trn-
mel, and then connecting them by cutting
throusl their sides; 1t is claimed for this plan
mat Nhil" 1t would cost more, it would be per
iecily safe from the possibility Of disaster. and
tha, tn" work could be expedited so AS to
Shorten the time Of completion u year. or even
Two years, II II sufficient force OF men were put
on at different points. II would oven be pos
blblc Ia tul,d the whole tuun" in n year h"-
cause men rou ID work AT different points along
thG lhr instead " a. now. only ut the ends:
=, lGs'eriHy was Il memorable day N the New
lorE slde Of tho tunnel ms the first boring was
snhle On IN" side toward Jersey cry, Cen
9.uth has consented TO Superintend the trying
o. the experiment. 10 work with compressed air
from the New York End laterallY, Hs has been
gone on tho Jersey City end. lie hns brac"d
me piece Of tho cusson o be cut out, and has
c9Hepdrd Ia. cut il out by h,rnE succession
OF h9irs side by sidc in "irrr the size OF one
q III" tunnels. II was the boring OF one OF
ines" ma" HuEur holes that constituted the
Arht a'ep l"Yurd Jersey Clty from New York,
~ inu} take Spmc days or weeks TO decide
which rlan oioIl Ice mHDy adopted for con
uhHnE IA" luu"l but Cen. Smith says he has
no dolm thn ~" work w'll h" vigorously
pushed On sulur rh.n.