Abstract： AS 4799:2000 pdf download.lnstallation of underground utilityservices and pipelines within railway boundaries. Loads imposed on the carrier pipe, encasement, or encasing pipe by the placement and compaction of backfill, or ordinary till as...

AS 4799:2000 pdf download.lnstallation of underground utilityservices and pipelines within railway boundaries.

Loads imposed on the carrier pipe, encasement, or encasing pipe by the placement and compaction of backfill, or ordinary till as

well as the passage of construction equipment in accordance with AS 3725 for rigid pipe and AS/NZS 2566.1, or other appropriate

Standard. for a flexible pipe.

1.4.2.4 Encasement

An external concrete surround to a pipe. cable or conduit.

1.4.2.5 Encasing pipe

A protective pipe through which the carrier pipe, cable or conduit is placed.

1.4.2.6 Han,mtthle fluid

A fluid, either liquid or gas, that has a flashpoint up to and including 61°C.

1.4.2.7 Formation level

Interface level between ballast and earth support.

1.4.2.8 Pipeline

System consisting of an assembly of carrier pipes, encasing pipes, valves, fittings and accessories as appropriate, used convey

fluids.

1.4.2.9 Railway boundary

Limit of land that is owned andlor controlled by the railway Corporation.

1.4.2.10 Rail level

The datum level of the top running surface of the lower rail of each track under which the service or pipeline passes.

1.4.2.11 Services

System of cables or a system consisting of an assembly of pipe, conduits, fittings and accessories used to protect communication,

cathodic protection and power cabling.

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