180
OF ENGINEERING FORMULÆ.
Board of Trade Regulations—continued.
CARRIAGES.
Minimum space per passenger « 20 cubic feet.
Minimum area of glass per passenger = 60 super-
ficial inches.
Minimum width of seats = 15 inches.
Minimum breadth, of seat per passenger = 18 in.
Minimum number of lumps per earriage = 2.
PERMANENT WAY.
Joints of rails to be fished.
Chairs to be secured by iron spikes.
Fang bolts to be used at the joints of flat-bottomed
rails, and at some intermediate places.
STATIONS.
Ends of platforms to be ramped (not stepped),
Signals and distant signals in both directions.
Signals to bo weighted to iiy to “ danger ” if wire
breaks.
Switch handles to be brought together.
„ „ not to be worked between lines of
rail,
Facing points to be avoided.
„ „ where unavoidable, to be furnished
with self-acting signal.
Sidings to be supplied with locked chock-block.
Sidings on a gradient falling towards the line to
be provided with a blind siding.
Tura-tables to be a safe distance from adjacent
lines.
Platforms of bridges protected from fire.
Walls and handrails to be provided on viaducts
at stations.