What do you do regarding trenches, drainage ditches, and pipe trenches in factory buildings where flammable gases that are heavier than air may accumulate?

2021-12-12View Original

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What do you do regarding trenches, drainage ditches, and pipe trenches in factory buildings where flammable gases that are heavier than air may accumulate?

Reply #22024-03-18

Use a floor drain or omit drainage

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