Engineering Wonders of the World
Volume I
Forfatter: Archibald Williams
År: 1945
Serie: Engineering Wonders of the World
Forlag: Thomas Nelson and Sons
Sted: London, Edinburgh, Dublin and New York
Sider: 456
UDK: 600 eng - gl.
Volume I with 520 Illustrations, Maps and Diagrams
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THE CANADIAN PACIFIC RAILWAY.
261
tage denied to those who have to build through
country already settled. They could plan out
the stations, round houses,
Some divisional points, and tool and
Advantageous . .
Conditions. rePair shoPs on a scientlfic
plan, unhampered by the de-
mands of landlords. The stations were located
about sixteen miles apart on level sections,
with passing places half-way between every
two stations.
Heavy as was the engineering on the sec-
filled up with vast deposits of timber and
muck piling, used in such quantities that the
contractors might well think that they had
struck the bottomless abyss itself. At a point
between Sudbury and Cartier a lake was
lowered ten feet in order to find a base for the
track. The lake being on the summit of a
convenient gradient, a canal was constructed
to draw off the water, and the roadway was
built along the shore two feet above the low-
ered surface of the lake.
C.P.R. STANDARD PASSENGER ENGINE.
Heavy
Rock
Work.
tion from Fort William to Fort Garry (Winni-
peg), it was easy as compared with that on the
section along the north shore
of Lake Superior, which cost
12,000,000 dollars for the 200
miles. Here the rocks are
granite and flint, with mica schist and black
trap, and to blast them 2,100,000 dollars’
worth of dynamite was needed.
Even before the northern shore of Lake
Superior was reached by those working west-
wards, the
Filling
in
Swamps.
engineers had to face serious
problems. The country north
of Lake Huron was full of
“ muskegs ”—lakes concealed
under a thick surface growth
of decayed vegetable matter and peat which
is thick, but not deep or solid enough to carry
a railroad track. These muskegs had to be
Viewed from the lake, the' coast-line pre-
sented a most forbidding prospect, but the
surveyors found a number of interior lakes
just inside the coast-line. “ The route was
laid out, in some cases, on the smaller
lakes inland, and in others upon the per-
pendicular southern faces of the cliffs,
while coves were encircled, crags tunnelled,
and fissures and canyons crossed by lofty
bridges.”
In order to keep the gradient at less than
1 per cent., an enormous amount of deep rock
cutting and high bridging had to be done on
this section. The Pic River
was crossed on an iron truss _
... . Bridging,
bridge on stone piers at 110
feet above water, and the track at Jackfish
Bay winds so much that it takes three miles
to advance half a mile as the crow flics. The