Some Requirements When Applying Galvanized Steel Grating
Released time:12/19/2012 Click:
* Working basis and passage made of galvanized steel grating
The most likely danger that working bases and passages could lead to is falling objects. Therefore, there are some points that should be paid special attention to. First, there should not be any gap on the steel grating whose mesh is larger than that of the steel grating itself, under any circumstance, it should not be wide enough to make the ball having a diameter of 35mm passing through freely. Second, if the working basis or passage is to bear people, the mesh of the steel grating should be less than 20mm. Otherwise, additional actions should be taken to guarantee the safety. Last but not least, the galvanized steel grating should be flat enough so that people walking on it would not be tripped down, besides, the height difference of neighboring gratings or the grating and the other structure should not be larger than 4mm.
* Avoiding the risk resulted from falling steel gratings
First, the steel grating should be fixed with welding and should not be moved or separated from the supporting basis. In the cases that the steel grating has to be dismountable, it should be fixed with the specific clamps to avoid any movement. The clamps, if not made of stainless steel, has to be processed with hot dipped galvanizing to made them strongly anti-corrosive. Each steel grating should be fixed with at least 4 clamps. Second, to avoid any risk resulted from corrosion, looseness or movement of the clamp, it should be checked every certain interval. Third, steel grating should be anti-slippery, so in cases that the working basis has a slope less than 10皁r there is always thick accumulated liquid on it, it is better to choose serrated steel grating. While if the slope is more than 10�, additional slippery-proof actions should be taken to prevent people from slipping.
* The size of steel grating working basis and passage
The width of steel grating passage for single person should not be less than 600mm while if it is designed for multiple people, that number should not be less than 1200mm.
* The load of steel grating working basis and passage
The load of working basis for single person is normally 1.5 kN/m2. The load of passage for single person should normally be less than 3.0 kN/m2 while for the passage designed for multiple people, the load should be more than 7.5 kN/m2.
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