div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: PDFEC94 - หน้าหลัก81 British Standards Institution British Standard Testing Concrete BS 1881: Part 108: 1983 82 British Standards Institution British Standard Testing src=https:reader033vdocumentsusreader033viewer20220418015e51b8f3fab140259d281837html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: PDFEC94 - หน้าหลัก81 British Standards Institution British Standard Testing Concrete BS 1881: Part 108: 1983 82 British Standards Institution British Standard Testing src=https:reader033vdocumentsusreader033viewer20220418015e51b8f3fab140259d281837html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: PDFEC94 - หน้าหลัก81 British Standards Institution British Standard Testing Concrete BS 1881: Part 108: 1983 82 British Standards Institution British Standard Testing src=https:reader033vdocumentsusreader033viewer20220418015e51b8f3fab140259d281837html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: PDFEC94 - หน้าหลัก81 British Standards Institution British Standard Testing Concrete BS 1881: Part 108: 1983 82 British Standards Institution British Standard Testing src=https:reader033vdocumentsusreader033viewer20220418015e51b8f3fab140259d281837html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: PDFEC94 - หน้าหลัก81 British Standards Institution British Standard Testing Concrete BS 1881: Part 108: 1983 82 British Standards Institution British Standard Testing src=https:reader033vdocumentsusreader033viewer20220418015e51b8f3fab140259d281837html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: PDFEC94 - หน้าหลัก81 British Standards Institution British Standard Testing Concrete BS 1881: Part 108: 1983 82 British Standards Institution British Standard Testing src=https:reader033vdocumentsusreader033viewer20220418015e51b8f3fab140259d281837html5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 7button div class=ts-image amp-img class=ts-thumb alt=Page 7: PDFEC94 - หน้าหลัก81 British Standards Institution British Standard Testing Concrete BS 1881: Part 108: 1983 82 British Standards Institution British Standard Testing src=https:reader033vdocumentsusreader033viewer20220418015e51b8f3fab140259d281837html5thumbnails7jpg width=142 height=106 layout=responsive amp-img divdiv