Have you ever wondered why public restrooms have U-shaped toilet seats? If you hadn't even noticed, well, you're welcome — now you'll never un-see that little detail. It has to do with the American Standard National Plumbing Code. Since 1955, the American Standard National Plumbing Code has stated: "Water closets shall be equipped with seats of smooth, non-absorbent material. All seats of water closets provided for public use shall be of the open-front type." But why? #toilet #toiletdesign #wc #
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