div class=ts-pagebuttonPage 1button div class=ts-image a href=https:reader042vdocumentinreader042viewer20220306175ae230087f8b9a90138c0007html5page1jpg target=_blank amp-img class=ts-thumb alt=Page 1: S failures of the arch ring Conventional reinforced concrete mass foundations should be used if possible the alternative use of piled foundations will increase rhe construction src=https:reader042vdocumentinreader042viewer20220306175ae230087f8b9a90138c0007html5thumbnails1jpg width=142 height=106 layout=responsive amp-imga divdivdiv class=ts-pagebuttonPage 2button div class=ts-image a href=https:reader042vdocumentinreader042viewer20220306175ae230087f8b9a90138c0007html5page2jpg target=_blank amp-img class=ts-thumb alt=Page 2: S failures of the arch ring Conventional reinforced concrete mass foundations should be used if possible the alternative use of piled foundations will increase rhe construction 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