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Tolerances pressure-welded gratings
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Diagonal dimensions (diagonal measurement)
 
 
 
Bars and edge bars
 
 
Radian height
 
 
Fixing plates
 
 
Fixing plates
 
 
 
General details:
The tolerance limits apply to the pressure-welded gratings manufactured by ElefantRiste A/S.
 
Tolerances, exterior dimensions:
 
Length/Width Tolerance
Gratings of length/width ≤ 1000 mm +0 / -3 mm
Gratings of length/width > 1000 ≤2200 mm +0 / -4 mm
Frames and frame parts +3 / -1 mm

Height Tolerance
Gratings +1,5 / -0,5 mm
Frames +1 / -1 mm
Stair treads +3 / -1 mm

Diagonal dimensions (diagonal measurement) for gratings and frames:
D1 = Diagonal dimension 1
D2 = Diagonal dimension 2
L/B = Largest side dimension
 

Max. deviation on diagonal dimensions

Largest side dimension

Max. D1-D2

200 mm

2,0 mm

400 mm

3,0 mm

600 mm

4,0 mm

800 mm

5,0 mm

1000 mm

6,0 mm

1500 mm

8,0 mm

2000 mm

12,0
 
Tolerances, bars and edge bar:
 
Inclination, bars/edge bar: p max. = 0,1 x H2, but max. 3 mm
Difference in height for bars:
q max. = 1 mm
Difference in height for bars
and edge bar:
s max. = ± 1 mm
Distance from bars to edge bar: t max. = 1,5 mm

Tolerances of cutouts in gratings:
The tolerance limits apply to the pressure-welded gratings manufactured by ElefantRiste A/S.

Radian height:
p for L/B 450 < L/B ≤ 2000 mm: 1/150 x L/B but max. ± 8 mm
p for L/B ≤ 450 mm: max. ± 3,0 mm
 
Tolerances of cutouts in gratings:
L/B≤ 1000 mm: +0, -3 mm
L/B > 1000 mm: +0, -4 mm :
a, b, c, d, e, f: ± 5 mm
g, h, i, j, r: +6, -0 mm
ø: +8, -0 mm
 
 
Tolerances, Fixing plates:
c/c bolt holes +/- 5 mm by type SP, N, & NP
a: +/- 3 mm by type SP, N & NP
c: +/- 5 mm by louvre gratings
d: +/- 5 mm by louvre gratings