34
DOCK ENGINEERING.
TABLE III. (Continued).—Birkenhead Basin.
Height of 1 i i Width of Piers above Water Area. Birkenhead Basin. Entrance. Datum. Lineal Quayage.
Ft In. Ft. I»- Acres. Yards. North Basin 500 0 31 0 4 2843 Miles. Yards. 0 669
Total Water Area and Lineal Quayage of the Birkenhead Basin, ^4 2843 0 669 9 256
Total, 164 4190 9 925
Barry Docks.
The special feature of the Barry Docks is the accommodation provided,
almost exclusively, for the coal and timber trades, and it is on this account,
principally, that these docks have been selected for illustration. Ihe town,
which is of quite modern growth, having developed from a population ot
100 in 1884 to one of 30,000 in 1902, is situated at the southernmost point
of the Welsh coast-line, forming an outlet from the coalfields in that locahty,
in close contiguity to Cardiff, Newport, and Swansea.
The docks are the property of the Barry Railway Company. The entrance
lies under the convenient shelter afforded by the high land of Barry Island,
which protects it from westerly and south-westerly winds. The only points
of exposure—viz., to the southward with a sea-range of 14 miles and to
the south-east with a sea-range of 16 miles-are covered by breakwaters.
There is also good anchorage, extending from Barry Island to feully Island, a
distance of 3 miles. . , ,
The range of tide at Barry is 36 feet at ordinary springs and 20 feet at
ordinary neaps. , i i
The shipment of coal takes place at the north side of both No. 1 and
No 2 docks, and on both sides of the mole in the former dock. It is stated
that a steamer has entered the dock, loaded 1,900 tons of coal, and left again
on the same tide. .
Table iv. gives all the particulars necessary for following the arrange-
ments exhibited in the plan. . .
The timber trade is accommodated at the east end of No. - dock, where
there are two timber ponds of 6 and 35 acres respectively. Railways are
provided alongside, so that timber can be loaded direct from the ponds into
the railway waggons.