Evening star. [volume] (Washington, D.C.) 1854-1972, 1888-10-12
CITY AND DISTRICT.


LIEUT.. TOwNsEND REPORTS
He Says Every Foot os IN. r,,,.,
Lining should bs Carefully Exam.
lined.
psAs Els hkrHoD or KxAnrSrNe TIE WORK,
AND SAYS IT WAS ONLY A PRELIMINARY srrvry-
BE sceeEsrs MORE EFFECTIVE rx.r.-ruy coxn,
HoS Oh TIE TUNNEL A. HE FouxDu
Lieut. Townsend last evening comp,eted the re-
pts VI ms investigations In the aqueduct tunnel
IL a. follows: AA' 'ep0''
Il nave the honor to submit the following re,or,
upon tne condition OF the tunnet lining. while
ene charges OF defective lining In the tunnel
Isl appeared In the newspapers were OF so
senera ana indefinite q nature that no cine was
SVEN W wnich its location could be determined
eno 1ne persons making those charges declined 10
So uie any information upon which to base an
-, 80 .Ion' YET due to the courtesy OF reporters
~. Wv ey press, definite specifications as TO the
Position OF Dad work have been obj aimed
my Investigations have included rrsr an nv
en- .aon Oh the places specified; second a gen
nre.en, a,n OF the work OF the inspectors at
"a, ne method Of Investigation consisted In drill
nacsine snIougn the brick arch into the masonry
SHOWN. cutting q hole through the arch Of smfii'
S,ens sic 70 determine It's nature In a number OF
IN $500 sss scIons were made through the lin
the work WIG general cnaracSer OIL
Inc result OF the investigation may be sum-
been IonnS ~, The brick work has Invariably
49, -, ,oenu 70 ce good; the masonry side walls ap-
pesI 70 De solid, but defects are found In the ma
Soa.y packing behind The brick arch. That done
-, 81 .ne inspection OF OBrien Is criminally bad
MS WORK was chiefly confined 10 the kew OF the
arcn, aso THIS Investigation shows a series OF
nspy pocAeIs above the brick work. separated by
nasonry walls which appear To nave been con-
ton. ~ 'f~
The work under the Inspection OF Mcnamara IA
OF better character and has Improved as the in
spector has acquired experience. sections cut
s s0eSn tine lining In his early work show the
SpsSS oeuino the arcn compactly nlled with stone
Out the amount OF mortar employed Is insufficient
Ano NOT properly distributed. sections inspected
nitef ne mad supervised about 700 linear feet or
nnlns, snow q solid masonry backing, and his
WORK done the week before these charges were
made public Is particularly good. Vacant spaces
place Indicated by a reporter and second in a
sectIon opened al the request OF Mcnamara as a
WORK or Inspectors Rouzee. woodward and Lucas
indicates that Il Is generally. good, though a
cavity was found above the Key In a section OF the
Libby IN inspected oy Lucas at q point had been
while the detective work which my investiga-
LIONS Indicate exists can be repaired at coInpara-
lively small expense, much more extended ex am
nation will be required insure the detection or
All defects In the work done under the force as at
present organized and II Is suggested that the in
vestigatlol should extend TO work done In former
years single piece Of detective work casts dis
circuit on tne entire structure, and very loot OF
the lining Of the tunnel should be most carefully
examined
The method adopted by me of drilling holes at
gwen intervals and cutting out the arch Is only
adapted 10 q preliminary survey. IL is not only
SLOW ana expensive, but Will require the repairing
ot gooo Work as wei as bad. There Is danger,
700, Oh omlltlng short sections OF detective work
IN the New York aQueduct, where detects OF a sim
liar character have been discovered. the services
OF an expert who can determine tine condition OF
the packing oy sounding the brick arch, have been
obtained III such d man can be found IL Is recon-
mended That lac be employ ed 10 continue the ex-
ANIMATION IL viii REQUIRE, however, a man or
Ionx experience In similar work. The modinca-
lions OIL sound, due To the ase OF the prickwork
It's thickness, the dimensions OF the cavities, and
the Character VI the packing, Will readily deceive
an ear not especially trained In this particular
line.
'The employment OF a hydraulic jack, with
pressure regulated with reference to that which
the aIeh Will have 10 bear when water Is intro
Quced, will lead 10 the detection OF any unsafe
inning, out It IS questionable whether all points
Would De determined where the requirements OF
the specifications OF the work nave not been fuI-
rled.'