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Beton landasan steel grating (bagian kanan dan kiri) harus rata atau sama tinggi. Bagian bawah steel grating diusahakan menempel secara sempurna dengan landasan bawah.They are often manufactured with Pretty much any mix of pitch size. Mostly This can be 41mm x 100mm or 30mm x 100mm.In keeping the bottom dry, workers set up grating as drainage tren