The Alexander kit is a 50,000 gallon type wooden type. The prototype
shown was located in London Mills, Illinois on the London Mills Spur.
The Q dismantled the spur in 1935 and the tank went with it. In the
instruction sheet, the kit indicates the following:
At one time, the CB&Q had nearly 200 tanks of various types in use on
its lines west of Chicago. The tank at London Mills, Illinois was built
in 1918 and represents the final development of the 50,000 gallon type
on a timber structure. Due to the relatively short life of the pine
supports, which deteriorated much sooner than the tanks themselves, a
riveted steel angle frame was adopted for use after 1920. Increased
traffic also made it necessary at many locations to replace the single
track outlet spouts with swiveling crane outlets capable of servicing
either the mainline or a siding.
Notes form the CB&Q blueprints of the 50000 gallon tank as built at
London Mills provide some interesting construction and operational
details. The tank itself was composed of 3x6 staves assembled around a
3-inch thick floor and having a 2 inch thick top. The conical roof was
framed with 2x10's, capped with 1-inch planks and covered with 3-ply
roofing. A hatch roof provided access to the valve and rod mechanism,
and a ladder inside the tank allowed maintenance workers to reach supply
pipes and outlet fittings on the tank floor. The tank rested on twenty
three 4x10 joists laid across four 12 inch square girders, supported in
turn by twelve 12 inch square posts. The ends of the joists were
enclosed with a ring of galvanized iron around the entire circumference
and the posts were anchored to concrete footings set about 5 feet into
the ground. Eight diagonal 4x10 braces were specified, although local
modifications of this feature have been noted.
I have built (2) of these kits and they build into a really nice small
branch tank.
Tom
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