div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=powerpoint-presentation-lift-shafts-tunnels-culverts-service-pits-characteristicshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: PowerPoint PresentationLift shafts Tunnels culverts Service pits Characteristics Between concrete-slab construction Below grade waterproofing of concrete and masonry surfaces loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer20220403045ea3017f0d12c5765860e646html5thumbnails1jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=powerpoint-presentation-lift-shafts-tunnels-culverts-service-pits-characteristicshtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: PowerPoint PresentationLift shafts Tunnels culverts Service pits Characteristics Between concrete-slab construction Below grade waterproofing of concrete and masonry surfaces loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer20220403045ea3017f0d12c5765860e646html5thumbnails2jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=3Page 3button div class=ts-imageimg data-url=powerpoint-presentation-lift-shafts-tunnels-culverts-service-pits-characteristicshtmlpage=3 data-page=3 class=ts-thumb lazyload alt=Page 3: PowerPoint PresentationLift shafts Tunnels culverts Service pits Characteristics Between concrete-slab construction Below grade waterproofing of concrete and masonry surfaces loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer20220403045ea3017f0d12c5765860e646html5thumbnails3jpg 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Characteristics Between concrete-slab construction Below grade waterproofing of concrete and masonry surfaces loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer20220403045ea3017f0d12c5765860e646html5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=powerpoint-presentation-lift-shafts-tunnels-culverts-service-pits-characteristicshtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: PowerPoint PresentationLift shafts Tunnels culverts Service pits Characteristics Between concrete-slab construction Below grade waterproofing of concrete and masonry surfaces loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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