Abstact： ASME A112.6.3:2001 pdf download.FLOOR AND TRENCH DRAINS. 5.1.4 Extra Heavy Duty. Grates having sate live load (as calculated in piara. 5.2.5) between 7.500 lb (3375 kg) and 10.000 lb (4500 kg). 5.1.5 Special Duty. (iratcs having sate live l
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