NR NR/L2/SIG/11201/MOD B14 ISSUE 4 PDF

GENERAL ARRANGEMENTS

Points should generally be fitted with the following connections:

i. one drive rod;

ii. one lock rod, where locking required; and

iii. two detector rods, where detection required.

Where necessary, extended timbers or concrete bearers, with extended soleplates, should be provided for fitting:

a) electric or EP point machines;

b) certain arrangements of individual detectors; and

c) hand lever operated switches.

Insulations should be provided in the rod fittings, stretchers, soleplates and extended soleplates, so as to keep the rails electrically separate from each other and from the point mechanisms.

Standard arrangements for the layouts, fittings, drillings and fixings are depicted on drawings listed in NR/LS/CAT003. The arrangement used should be quoted on the design details. See NR/L2/SIG/11752 for drilling requirements for fitting fishplate type bonding.