193
OF ENGINEERING FORMULÆ.
Prussian Railways—continued.
CARRIAGE SHEDS.
Minimum distance of rail, centre to
centre .. .. __............14 ft. 6 in.
Minimum height of doorways .. .. 13 feet
Minimum width of ditto .. . . .. 11 „
LOCOMOTIVES.
15 feet
13 „
Maximum wheel base of engines with
curves 2000 feet radius_________
Ditto, 1500 ditto.............
Ditto, 1000 ditto.............
Bogie frames should be adopted with
curves under 1000 feet rad.
Maximum load on one axle .. ..
Minimum play of flanges of wheels..
Minimum clear space between wheels
Maximum projection of flange below
top of rail.....................
Maximum width, of tire .........
12 j tons
§ inch.
4 ft. 5-1 in
1|inch
6 inches
Minimum width of tire .. .. .. 5| ,,
Minimum diameter of driving wheel
fur goods engine ., ......... 4 feet
Ditto ditto, for passenger engine.. 5 „
Ditto ditto, for express engine .. 6 „
Minimum diameter of leading and
trailing wheel................. 3 „
Speed of goods train, per hour.. . 16 miles
Passenger ditto, ditto, from 25 to 33 „
Express ditto, ditto_________ 40 „
Maximum pressure in boiler, per sq. in. 100 lbs
Proof pressure in testing boilers .. 150 lbs.
Height of life guards above rails . 2 to 2| in.
Maximum breadth of engine .. .. 10 feet
Ditto height of chimney above rails 15 „
o
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