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フェイスシェルとウェブを備えたコンクリートブロック，又はフェイスシェルと隅とウェブを備えたコンクリートブロックの，無底空洞部を上下方向に置いたさいに，フェイスシェルの上面部と面一に形成されたウェブの上面部から，前記ウェブに前記フェイスシェルの上面部の長手方向と平行に切り込みされた２又は３の切り込み線を備え，全ての切り込み線の間を打ち割り水平に鉄筋を入る１の切り欠き溝を形成する，又は両端のウェブはそのままの形状で，中央付近のウェブの切り込み線と切り込み線の間を打ち割り１組の無底空洞部を貫通させる切り欠き溝を形成する，又はそのままの形状で使用することもできる，前記コンクリートブロックは，空洞部に滞留する水の諸問題を解決するための切り込み線を備えていることを特徴とする無底空洞コンクリートブロック。A concrete block with a face shell and a web, or a concrete block with a face shell and corners and a web, which is formed flush with the top surface of the face shell when the bottomless cavity is placed vertically. 1 or 2 notches that have two or three cut lines cut into the web parallel to the longitudinal direction of the top face of the face shell from the top surface of the face shell, and that have rebars inserted horizontally between all the cut lines A groove is formed, or the webs at both ends are formed as they are, and a cut groove is formed between the cut line and the cut line of the web in the vicinity of the center so as to pass through a set of bottomless cavities, or as it is. It can also be used in the form, the concrete block, and characterized in that it comprises a cut line for solving the problems of water retention in the cavity No bottom cavity concrete block that.中央付近のウェブの切り込み線と切り込み線の間を打ち割り，無底空洞部を貫通させる場合の，無底空洞コンクリートブロックの強度を保つため，前記フェイスシェル側に前記ウェブの残部が残されている事を特徴とする，請求項１に記載の無底空洞コンクリートブロックIn order to maintain the strength of the bottomless hollow concrete block when the gap between the cut lines of the web near the center is broken and penetrated through the bottomless cavity , the remainder of the web is left on the face shell side. Bottomless hollow concrete block according to claim 1, characterized in that
Arrangement of reinforcement is with foraminiferous building block of two tenons, two tongue -and -grooves and brickwork of building by laying bricks or stones thereof
Arrangement of reinforcement is with foraminiferous building block in three tenon right angles and by its brickwork of building by laying bricks or stones