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Flood opening : ウィキペディア英語版 | Flood opening A flood opening or flood vent (also styled floodvent) is an orifice in an enclosed structure intended to allow the free passage of water between the interior and exterior. ==Flood openings in the United States== In the United States, flood openings are used to provide for the automatic equalization of hydrostatic pressure on either side of a wall. Building codes usually require the installation of flood openings in the walls of structures located in A-type flood zones recognized by the Federal Emergency Management Agency. Various agencies in the United States define necessary characteristics for flood openings.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Flood opening」の詳細全文を読む
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