Rail Installation Tolerances [PDF]

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2.6.2 Manufacturers’ tolerances Tolerance

Crane runways Diagram

S min

S

Tolerance A of track gauge dimension s of crane rails with reference to the rail centre and crane runway length

S max

2

Designation

41409444.eps

Smax = s + A

Tolerance class 3

for s ≤ 16 m: A = ± 3 mm for s > 16 m: A = ± [3 + 0,25 (s – 16)] A in mm us e s in m

for s ≤ 16 m: A = ± 5 mm for s > 16 m: A = ± [5 + 0,25 (s – 16)] A in mm us e s in m

for s ≤ 16 m: A = ± 8 mm for s > 16 m: A = ± [8 + 0,25 (s – 16)] A in mm us e s in m

2000

B = ± 5 mm b = 1 mm

B = ± 10 mm b = 1 mm

B = ± 20 mm b = 2 mm

C = ± 5 mm c = 1 mm

C = ± 10 mm c = 2 mm

C = ± 20 mm c = 4 mm

E = ± 0,5º/% x s in mm us e s in m m Emax = ± 5 mm

E = ±1º/% x s in mm us e s in m m Emax = ± 10 mm

E = ±2º/% x s in mm us e s in m m Emax = ± 20 mm

2000

b

b

-B +B

b

2000

41409544.eps

Position of a rail seen in plan

c

c

2000

2000

c

Tolerance C of the straightness with reference to the height of the crane rail centre and crane rail length Tolerance c of the straightness with reference to 2000 mm measured length (sample measurement) at any point of the crane runway

Tolerance class 2

S min = s – A

-C +C

Tolerance B of the lateral straightness of the rail head with reference to the crane runway length Tolerance b of the lateral straightness with reference to 2000 mm measured length (sample length) at any point of the rail head

Tolerance class 1

2000 41409644.eps

Position of a rail seen in elevation (longitudinal slope)

E

Tolerance E of the height with reference to perpendicular measuring points at every point of the crane runway

+E

s

41409744.eps

Position of rails in relation to one another in elevation (transverse slope) 20320004.tbl

Source: VDI 3576

36

2033522a.p65/0401

Recommended: Tolerance class 2