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Description of PcP. mesh gratings
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L : length of grating in support direction
B : width of grating across the support direction Mc : centre distance between transverse bars Ma : centre distance between bearing bars H : height of bearing bar t : thickness of bearing bar |
Description and definition of PcP. mesh gratings
When describing PcP. mesh gratings the total dimension and mesh size is given so that the span direction (bearing bars) is always stated as the first dimension (underlined), and the mesh width (the transverse bars) as the last dimension. The mesh size is described with the indication of the distance between the transverse bars as the first dimension, and the distance between the bearing bars as the last dimension. The mesh sizes are separated by a slash "/". Span x Width Mc/Ma Hxt mm Example: A grating that is 500 mm in the span direction and 1000 mm wide. The mesh size is to be 33 mm between the bearing bars and 11 mm between the transverse bars. The grating height is to be 20 mm, and the thickness of the bearing bars 2 mm: The grating is described like this:: 500 x 1000 11/33 20x2 mm The grating height is determined by the loading of the grating (requirements of load and use of the grating). The bearing bars are dimensioned for the transfer of relevant loads, the transverse bars (filler bars and possibly support bars) are dimensioned for distribution of the loads to as many bearing bars as possible, and for absorbing horizontal loads, e.g. brake loads. PcP. mesh gratings have edge pieces that "close" the grating and provide further stability. PcP. mesh gratings are pressed together under extreme load. This gives the grating a high degree of stability and strength even after cutouts in the original shape of the grating have been produced.
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