New-York tribune., 1875-09-25

md betwecn said point and the crack.
and that IL had moved out, wcswardy. at the Same
point about the distance Two shutters or panels
were taken up the face Of tho WALL about 60 feet
north OF the pier and diver Mcdonald sent down to OK
anime He reported the face of the wall good smooth
and hard 10 feet inches down from the base OF the
granite; from that point down the small np-rap
stone . were wedgcd between the overlying mass
OF and the top Of tho piles so that at TINS point
the weight OF the wall rests pile OF broken stones
lying top Of and around the piles s TINS cHnGSn m
directly contrary TO It, and Is the result OF
The diver Mcdonald has also examined about 40 feet
Of the rear of the wall at Canat and found in pretv
about feet long ~ inches to 10 inches wide. and
inches thick had fallen of 1t is very poor sleoct .,
ne seen in H. and il has so little cohesion that 1t broke
into several pieces by beng rolled over anu c9"o oo
readily crumbcd and broken to pieces ny tnG NAME s
now stands before accession 10 lhe ONCE, i. was
built the prSc a. ns been It's
construction. Its faults and failures arr 'neIe cn
sGrS sPTScea on my wrcns Ens0 prncple This wall st
examined in three parcels OF its face by DIVER %
examined the same three panels lie reported Sry ,ng
southcry panels smooth and soft bu, al te f
ton bottom depth into the face Of the wall 1i
from nneinches to fifteen inches. and that thS eoncre
This wall having been recently completed suspended
the yemoval Of the panels for several weeks IN oIei ~
All the shutters panels on the rear OF the Man
were then removed. and most OF those on thc Ion.;
Diver Mcdonald went down and examined the wall pane,
by panel He reported the whole of the concrete wall
soft that he could pull out stones with his hahus anu
various imperfect places but not OF great depn ekce
In one or two places including the above mtntioheu
then sent for diver Gillihan, employed at the batey
and directed him to down aud examine the whoe iacc
OF the wall front and rear when he could ge al H. s
report agrees generally with that Of Mcdonald =
The facts ascertained i'll my examinations
indicate clearly that the plan OF Diidins tnr
wall OF concrete placed under water " en- ihahse,
in situ" cannot be relied upon TO prOduce y
permanent, stable, and desirable wall; ana
am under the necessity OF recommending ~
least the suspension. II not the entire abandonenl VI
such plan No wall has been built upon TINS plan sIhce
y accession Office. except that part OF the Carist
section begun before appointed, ana since tnth
completed. The work OF building the buIk-heau wall IS
now suspended by orders and shall desire 10 nave
the approval the Board Of action In colsucratoh
of the fact that this plan Of building the wall IS ng
commended in the report OF the late Engneerii-Cheio OF
s Department, dated June l. 1879, ana that such re
port has made public, and extracts from plinteu
in the newspapers and in Van NOSfrdnds EngtHec'HV
Hd0G-ine beg leave to suggest TO the Board OF COiins
sonprs through your Committee, the proprety or te
justification OF the Commissioners ana OF myself OF cali
ing to our assistance the united wisdom and experience
of dsnerested engineers. to examine the conutlon o
that portion the wall referred 10 in this report ana al
wise what remedy il should be applied 10 H. very
respectfully, your Obedient servant,
G.. s. GREENE, jr..
Engineerin-Chlcf.