Grating manufacturing tolerances
Worth knowing: Allowed dimensional deviations – measurements for 10 mesh elements
Allowed tolerances for platform gratings (for gratings without loads)
Fig. 17. Diagram of a bow deviation
Worth knowing: Bow deviation (xt) max = 1/150 of the length; at a size of > 450 mm – max 8 mm; for sizes < 450 mm – max 3 mm
Fig. 18. Diagram of a concavity deviation
Worth knowing: Concavity deviation (ot) max = 1/200 of the length; at a size > 600 mm – max 8 mm; for sizes <600 mm – max 3 mm
Fig. 19. Diagram of a bow deviation
Worth knowing: Bow deviation (xq)= max = 1/150 of the length; at a size of > 450 mm – max 8 mm; for sizes < 450 mm – max 3 mm
Fig. 20. Diagram of a concavity deviation
Worth knowing: Concavity deviation (oq) max = 1/200 of the length; at a size > 600 mm – max 8 mm; for sizes <600 mm – max 3 mm
Fig. 21. An out-rigging transverse bar or a framing bar
Worth knowing: An out-rigging transverse bar or a framing bar kmax = 0,5 mm
Fig. 22. Tilting of bearing bars and frames
Worth knowing: Tilting of bearing bars and frames pmax = 0,1 x h maximum 3 mm
Fig. 23. Haunch of a bearing bar cutting in relation to a transverse bar
Worth knowing: Haunch of a bearing bar cutting in relation to a transverse bar tmax = ±0,1 x h, max 3 mm
Fig. 24. Out-rigging transverse bars
Worth knowing: Out-rigging transverse bars qmax = 1,5 mm
Fig. 25. Out-rigging edge heading upwards
Worth knowing: Out-rigging edge heading upwards smax= 1,0 mm
Fig. 26. Out-rigging edge heading downwards
Worth knowing: Out-rigging edge heading downwards rmax = 1,0 mm