The New Orleans daily Democrat. [volume] (New Orleans, La.) 1877-1880, 1877-11-25

Oh Nnlon Wlh % suVntssoa HAsn sHon h"@s AZ
port.
which In the opinion Of the board offers the most
certain results and besides appears most eco
uOmical, 10 one that for Two centuries or more
has been successfully followed for the protectloh
OF caving banks and abraded sea shores In Eu-
rope, especially in Holland and Germany, and
been successfully applied by American engineers
on the Northern lake., on the Missouri and on
the Mississippi river at Cairo.
The method consists in the protection from
soour by currents and eddies OF the unstable
strata exposed in the sloping portions OF the
river bed, which, by being washed out, prevent
portions Of the bank from dropping down or
sliding into the river.
The method recommended by the board is that
Of revetment. most ohesply and easily obtained
and applied where there 10 an abundance oil
small growth timber, which have been used 81
ready In variety Of shapes Of hurdles, mats,
mattresses, fasoines, rough bundles, and even
thrown In loose, ballasted with natural or artif-
cial stone, or secured 10 the oavng slope by pill
ings or stakes.
THE BOARD Is CONFIDENT
that this system of revetment judioiousy applied
sl along the exposed portion Of The city may be
made to
EFFEoruALLy PROTECT
II, and at a reasonable expense, but owing to the
changes that have occurred since the last survey
available the detsils Of the construction of the
I6NbtLueUHs WALDu Do VMEt6u 10 suit lDCht Pc
culisrities, etc.. can only be fully decided upon
after detailed survey.
This report adds that the board have been fur
nished with most exact data Sc to the cost of
various revetment works, and hope to be able soon
to offer CLOSE estimate for that recommended in
AZ which works are in progress which seem to
call for
THE IMMEDIATE ACTION
of the board, the cave in the Third District OPP
posite the Atlantic Press. After relating in
detail the condition OF the bank thirty We or forty
years ago and the encroaohments OF the river
since, they continue saying that II s possible that
this cave has reached ts limit, as it did years ago.
that the shore line may again begin to build out
in the river, but as q measure of preoaution
they deem il advisable TO continue the work
in progress under supervision OF the
city surveyor, with notifications to meet
the general views Of the board. They recon-
mend therefore that the single line timber bulk
head be completed, and the slope in front carpet
ed with hurdles or fssones, mats or bundles of
brush made into rafts and sunk upon the bottom
with ballast for sufficient distance out to cover
the defective strata lying between the shore line
and the wharves, and protect them from further
scour.
Regarding The cave at the head OF sorapsru
street, the board say, on the report Of Capt. r.
W. Francis, the diver, that the defective stratum
lies at present depth OF about % feet, and that
IL is from 10 TO Is feet in thickness, slightly
hanging. AT Oepsn OF ~ feet. lying inside the
line Of wharf front, he found very stable
ststum. At this point Che board recommend the
same measures as at the cave in the Third Dis
riot.
THE LAKE PROTECTION LEvEE.
Regarding this levee the board say that they
lave considered the proposition of surveyor
,'Hemeoourt; that they have knowledge Of
milsr works In various and more exposed por-
ions OF the Northern lakes, and that there are
reasonable prospects Of their success with certain
notifications that are suggested. They advocate
J trial OF MIR. d'Hemecourts plan thus modified.
THE DEPARTURE.
Gen. Weitze and Major Benysurd will leave the
ity to-day, their presence in their respective
districts at the end OF this month being nee
ssary. They cay that they have made full ar
Angements for the continuance OF the work by
be resident members Of the board
Gen. Weitzel and Major Benyaurd will return
o New Orleans upon the completion Of the hy- |
geographic survey.