689 [=50] (V.2)

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Status: Complete

689

=pets. The flanks are pierced by
a passage constructed in the
form of an inclined planeon a slope of 1 in 5 which
gives the means of approach to
the Dam from the esplanade
levels. The downstream or tail wings
are built with an inclination
towards the axes of the bed of the
River. Their superstructure which
is 6 feet in height from the flooring
of the Dam is connecte with the
flanks, and the esplanade level
by a series of steps.-

The Dam itself consists of
47 sluices of 10 feet in width with
then sills flush with the Canal
bed separated by [?] of 3 1/2
feet ; the above are flanked on
each side by 5 slices of the same
width but having their sills
raised to a height of 6 feet, with
intermediate piers of the same
dimensions as those, in the
center sluices. On the extreame
flanks are of 10 feet above the
Canal bed, and corresponding
in height with the rest of the
piers. These elevated platforms
which are 17 feet in length are
connected with the Rivetment
Esplanade by the inclined planes
which I have before described as
carried through the flanks of
the Dam.-

The amount of water way
therefore through the sluices up
to a height of 6 feet is equal to
470 feet in width : to a height
of from 6 to 10 feet it is increased
to 570 feet, and when flood water
rises

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