9.2　Rail Chair

General Items

9.2.1　The allowable deviation for installation of rail chair shall comply with the requirements in Table 9.2.1（see Figure 9.2.1）.

Quantity to be checked:100%.

Inspection method:See Table 9.2.1.

Table 9.2.1　Allowable deviation for installation of rail chair

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Figure 9.2.1　Schematic drawing for installation of rail chair

1，2-rail chair；3-horizontal base line of rail chair（center line）；4-horizontal center line of electric arc furnace；
5-base mark of elevation；6-longitudinal base line（center line）of rail chair（at electrode side）
7-longitudinal center of electric arc furnace

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