Chicago eagle. [volume] (Chicago, Ill.) 1889-19??, 1893-02-04
ENGINEERING FACTS
The Greatest Works of the World and
When Constructed.

The first Eddystone lighthouse wa
erected in 1858.
Asphalt pavements were first laid il
Paris in 1854.
The diamond drill is pointed will
black diamonds.
The total cost of the Suez Canal ex
ceeded 10000, coo.
y tunnel between Dover and Calais
was proposed in 1892
The coast survey of the United State,
was begun in 1877.
Roebhng's railway bridge at Magyar,
has span of S21 feet, with 50 feet de
| Election.
The Cherbourg ''digue" is 4, 100 yard
long, having two arms inclosing tn,
| entrance.
Pontoon bridges, with copper pom
toons, were invented 10y the French abou
1872.
AT theheginning of the eighteenth cen
Jury all European armies had pontool
trains.
The weight required to crush q squar
inch of brick varies from !, 200 to 4, 50t
pounds.
Gunter's chain, used in measuring
land, was invented by Edmund Gunte
in 1906.
The great aqueduct which supplied
Carthage with water was seventy mile,
long,
There was a medieval association Of
engineers called the Brethren of the
Bridge"
The st. Gothard tunnel is nine and one
fourth miles long; began, 1870; opened
1881.
The Mnot Ledge lighthouse is of gran
lite; height So feet, the lower 40 feet be
ing solid.
Apneumatic dispatch tube, thirty inche.
ii diameter, was laid down in London il
1891.
A light suspension bridge was bull
at Niagara Falls in 1S4S, and removed
in 1854.
In A. D. 105 'fraian built magnificent
stone bridge across the Danube $40 feet
long.
The Brooklyn suspension bridge i,
1862 feet long, 1,505 feet central spar
and 1875 feet high
In blowing up Blossom Rock, Sar
Francisco Bay, $4,000 pounds of explo.
sives were used
The caissons Of the st. Louis bridge
were sunk, in one case, 1870 feet through
the sand.
There are eighty miles of tunnels In
Great Britain, their total cost exceeding
So, 100000.
A tunnel under the Thames was pro.
posed in 1899; the present tunnel wa,
finished in 1s43
The most noted Lighthouse in the
United States is at NIinot's Ledge, in
Massachusetts Bay.
The cost Of the Union Pacific was re.
ported as SIP, 259, 800, an average OF
$10s, 778 a mile.
The excavation Of Hell Gate reef was
attended by q, coo soundings and 5000
borings
The Croton aqueduct in New York
surpasses all modern engineering efforts
of this kind.
The first lighthouse in the United
States was built on Little Brewster
Island, Boston, 1715
Ventilating machines are necessity
in coal mines to overcome the effects OF
noxious gases.
The Eads jetties are regarded By cngi-
neers as a greater triumph than the st.
Louis bridge.
The theodolte was first constru ctcd in
the seventeenth century, by an unknown
inventor.
The giant statues of Rameses were
placed in position by rolling them along
creased planks
The receiving reservoirs Of the Croton
aqueduct have a joint capacity Of /, $50,
600, coo gallons.
Including commissions and interest,
the total cost Of the Croton aqueduct
was $l2, 100000.
A railway tunnel ulder the English
Channel was projected in 1869; charter
refused by Parliament.
The "digue, or breakwater, Of Cher
bourg is one Of the boldest engineering
feats ever performed.
The preliminary surveys for the Pacific
Railroad required four seasons, and cost
over 81, 600, 600.
Civil engineering became important
about 1850 when Smeaton began the
Eddystone lighthouse.
The Great Levels in East England,
., 600 square miles, have been recovered
from the sea by bikes.
Cornelius Nemuyden, the Dutch en-
gineer, was invited to England in 1921
TO embank the Fens district
Every pontoon used in the French
army weighs lGjs pounds and has a
buoyancy of 1865 pounds.
The walls of Babylon are said by Hero.
dotus to have been $50 feet high and 100
feet thick at the base.
The Mont Gents tunnel Is seven and
one-half miles long; begun, 1857;
opened, 1871, total cost, 81, 800, 600.
The surveys Of the lIoosac tunnel were
30 accurate that the drifts differed by
only hye.sixths of an inch.
Jerusalem is still supplied with water
from solomon Pools, through an aQuc.
duct built uy the Crusaders.
The engineers Of San Francisco pro-
pose % supply that city with water from
lake Tahoe. li0 mile. distant
Wc.m.rsic Bridge, built Boo 1859. was
thr frat bon which the foundations were
laid by tho a.d % e4Issons
Tho phaus light house. Alexandria
vas built %. e.. esi hight $50 iect. light