Structural Gauge Envelopes - Public Transport Victoria

VRIOGS 001 Revision B 19
ENVELOPE N
Envelope N applies on track that is used for passenger and freight operations and is for the
placement of signalling equipment (excluding signalling masts and gantries) and approved
structures only, and is typically situated between parallel running tracks. The signalling
equipment outlined above includes such items as signal trunking, small track units and dwarf
signals. On track that is only used for freight operations see Envelope N*.
V15
H12
ENVELOPE N*
The maximum Vertical Clearance shall be 1.5m
The minimum Horizontal Clearance shall be 1.55m
Envelope N* applies only where track has been identified to be used for interstate freight
operations to prevent fouling of rolling stock. Envelope N* is for the placement of signalling
equipment (excluding signalling masts and gantries) and approved structures only, and is
typically situated between parallel running tracks. The signalling equipment outlined above
includes such items as signal trunking, small track units and dwarf signals.
V16
H16
ENVELOPE O
The maximum Vertical Clearance of this cut out shall be 1.043m
The minimum Horizontal Clearance of this cut out shall be 1.911m
Envelope O applies to Broad or Standard gauge track and is for the placement of guard rails. The
guard rail arrangements may exist for V and K crossings on the regional rail network. This
Envelope is represented on the platform edge side but applies to both platform edge and nonplatform
edge. The Vertical and Horizontal Clearances outlined below also applies to figures 1 and
2.
V17
H17
ENVELOPE P
The maximum Vertical Clearance for the placement of guard rails is 25mm.
The Horizontal Clearance for the placement of guard rails is
1. On Broad gauge track between 580mm and 680mm from the track centre line
2. On Standard gauge track between 660mm and 760mm from the track centre
line.
Envelope P applies to any track category be it Broad or Standard gauge and is for the placement
of Tactile Ground Surface Indicators (TGSI’s) located on pedestrian level crossings. This
Envelope is represented on the platform edge side but applies to both platform edge and nonplatform
edge. The Vertical Clearance outlined below also applies to figures 1 and 2.
V18
The maximum Vertical Clearance for the placement of TGSI’s is 25mm.
The Horizontal Clearance for the placement of TGSI’s excluding placement on the top of
rail and across flange gap is to be as per VRIOGS 003.2.
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