{"id":72435,"date":"2013-02-13T16:20:28","date_gmt":"2013-02-13T16:20:28","guid":{"rendered":"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/article\/third-straw_o-2"},"modified":"2013-02-13T16:20:28","modified_gmt":"2013-02-13T16:20:28","slug":"third-straw_o-2","status":"publish","type":"post","link":"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/projects\/infrastructure\/third-straw_o\/","title":{"rendered":"Third Straw"},"content":{"rendered":"\n\n<div class=\"image-carousel\"\n\trole=\"region\"\n\taria-roledescription=\"carousel\"\n\taria-label=\"Image carousel\"\n\tdata-total-slides=\"7\"\n\t>\n\n\t<div class=\"image-carousel-top\">\n\t\t\n\t\t<div class=\"carousel-counter\">\n\t\t\t<span class=\"current-index\">1<\/span>\n\t\t\tof\t\t\t<span class=\"total-count\">7<\/span>\n\t\t<\/div>\n\t<\/div>\n\n\t<div class=\"image-carousel__hero-wrapper\">\n\t\t<button class=\"carousel-prev\"\n\t\t\t\taria-label=\"Previous slide\"\n\t\t\t\ttype=\"button\">\n\t\t\t<span class=\"icon\" aria-hidden=\"true\"><\/span>\n\t\t<\/button>\n\n\t\t<div class=\"carousel-main\" aria-live=\"polite\">\n\t\t\t\t\t\t\t<div class=\"carousel-slide active\"\n\t\t\t\t\tid=\"carousel-slide-0\"\n\t\t\t\t\trole=\"tabpanel\"\n\t\t\t\t\taria-roledescription=\"slide\"\n\t\t\t\t\t\t\t\t\t\taria-label=\"Slide 1 of 7\"\n\t\t\t\t\taria-hidden=\"false\">\n\n\t\t\t\t\t\t\t\t\t\t\t<!-- Load the first image immediately at full size -->\n\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tsrc=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?w=275\"\n\t\t\t\t\t\t\tsrcset=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg 1000w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?resize=225,300 225w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?resize=768,1024 768w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?resize=275,367 275w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?resize=133,177 133w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?resize=86,114 86w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?resize=98,131 98w\"\n\t\t\t\t\t\t\tsizes=\"(max-width: 275px) 100vw, 275px\"\n\t\t\t\t\t\t\talt=\"Barge-mounted Putzmeister concrete placing system places 12,000 cu yds (9,175m\u00b3) of concrete underwater to secure a water intake structure for the Third Straw project, which will draw water from the Lake Mead reservoir.\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-caption=\"Barge-mounted Putzmeister concrete placing system places 12,000 cu yds (9,175m\u00b3) of concrete underwater to secure a water intake structure for the Third Straw project, which will draw water from the Lake Mead reservoir.\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-credit=\"Putzmeister America\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"carousel-slide hidden\"\n\t\t\t\t\tid=\"carousel-slide-1\"\n\t\t\t\t\trole=\"tabpanel\"\n\t\t\t\t\taria-roledescription=\"slide\"\n\t\t\t\t\t\t\t\t\t\taria-label=\"Slide 2 of 7\"\n\t\t\t\t\taria-hidden=\"true\">\n\n\t\t\t\t\t\t\t\t\t\t\t<!-- Lazy load other main images with data-src to be loaded only when needed -->\n\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tsrc=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?w=466\"\n\t\t\t\t\t\t\tsrcset=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg 1500w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?resize=300,236 300w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?resize=768,605 768w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?resize=1024,807 1024w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?resize=466,367 466w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?resize=225,177 225w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?resize=145,114 145w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?resize=166,131 166w\"\n\t\t\t\t\t\t\tsizes=\"(max-width: 466px) 100vw, 466px\"\n\t\t\t\t\t\t\talt=\"An aerial view of the equipment barge, which staged two complete concrete placing system setups\u2014one operational, one backup.\"\n\t\t\t\t\t\t\tclass=\"lazy-load-image\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-caption=\"An aerial view of the equipment barge, which staged two complete concrete placing system setups\u2014one operational, one backup.\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-credit=\"Putzmeister America\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"carousel-slide hidden\"\n\t\t\t\t\tid=\"carousel-slide-2\"\n\t\t\t\t\trole=\"tabpanel\"\n\t\t\t\t\taria-roledescription=\"slide\"\n\t\t\t\t\t\t\t\t\t\taria-label=\"Slide 3 of 7\"\n\t\t\t\t\taria-hidden=\"true\">\n\n\t\t\t\t\t\t\t\t\t\t\t<!-- Lazy load other main images with data-src to be loaded only when needed -->\n\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tsrc=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?w=245\"\n\t\t\t\t\t\t\tsrcset=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg 1000w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?resize=200,300 200w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?resize=768,1152 768w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?resize=683,1024 683w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?resize=245,367 245w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?resize=118,177 118w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?resize=76,114 76w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?resize=87,131 87w\"\n\t\t\t\t\t\t\tsizes=\"(max-width: 245px) 100vw, 245px\"\n\t\t\t\t\t\t\talt=\"Continuous tremie pour lasts 12 days, with concrete outputs peaking over 100 cu yds an hour (76m\u00b3\/hr).\"\n\t\t\t\t\t\t\tclass=\"lazy-load-image\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-caption=\"Continuous tremie pour lasts 12 days, with concrete outputs peaking over 100 cu yds an hour (76m\u00b3\/hr).\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-credit=\"Putzmeister America\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"carousel-slide hidden\"\n\t\t\t\t\tid=\"carousel-slide-3\"\n\t\t\t\t\trole=\"tabpanel\"\n\t\t\t\t\taria-roledescription=\"slide\"\n\t\t\t\t\t\t\t\t\t\taria-label=\"Slide 4 of 7\"\n\t\t\t\t\taria-hidden=\"true\">\n\n\t\t\t\t\t\t\t\t\t\t\t<!-- Lazy load other main images with data-src to be loaded only when needed -->\n\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tsrc=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?w=556\"\n\t\t\t\t\t\t\tsrcset=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg 1500w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=300,198 300w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=768,507 768w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=1024,676 1024w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=556,367 556w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=268,177 268w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=173,114 173w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=198,131 198w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?resize=160,107 160w\"\n\t\t\t\t\t\t\tsizes=\"(max-width: 556px) 100vw, 556px\"\n\t\t\t\t\t\t\talt=\"Step 1: Ready-mix trucks are loaded on a transport barge, eight at a time, to deliver concrete for a tremie pour almost three miles from shore.\"\n\t\t\t\t\t\t\tclass=\"lazy-load-image\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-caption=\"Step 1: Ready-mix trucks are loaded on a transport barge, eight at a time, to deliver concrete for a tremie pour almost three miles from shore.\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-credit=\"Putzmeister America\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"carousel-slide hidden\"\n\t\t\t\t\tid=\"carousel-slide-4\"\n\t\t\t\t\trole=\"tabpanel\"\n\t\t\t\t\taria-roledescription=\"slide\"\n\t\t\t\t\t\t\t\t\t\taria-label=\"Slide 5 of 7\"\n\t\t\t\t\taria-hidden=\"true\">\n\n\t\t\t\t\t\t\t\t\t\t\t<!-- Lazy load other main images with data-src to be loaded only when needed -->\n\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tsrc=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?w=489\"\n\t\t\t\t\t\t\tsrcset=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg 1500w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?resize=300,225 300w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?resize=768,576 768w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?resize=1024,768 1024w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?resize=489,367 489w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?resize=236,177 236w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?resize=152,114 152w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?resize=175,131 175w\"\n\t\t\t\t\t\t\tsizes=\"(max-width: 489px) 100vw, 489px\"\n\t\t\t\t\t\t\talt=\"Step 2: Concrete is discharged from ready-mix trucks onto Maxon conveyors located on the equipment barge.\"\n\t\t\t\t\t\t\tclass=\"lazy-load-image\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-caption=\"Step 2: Concrete is discharged from ready-mix trucks onto Maxon conveyors located on the equipment barge.\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-credit=\"Putzmeister America\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"carousel-slide hidden\"\n\t\t\t\t\tid=\"carousel-slide-5\"\n\t\t\t\t\trole=\"tabpanel\"\n\t\t\t\t\taria-roledescription=\"slide\"\n\t\t\t\t\t\t\t\t\t\taria-label=\"Slide 6 of 7\"\n\t\t\t\t\taria-hidden=\"true\">\n\n\t\t\t\t\t\t\t\t\t\t\t<!-- Lazy load other main images with data-src to be loaded only when needed -->\n\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tsrc=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?w=489\"\n\t\t\t\t\t\t\tsrcset=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg 1500w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?resize=300,225 300w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?resize=768,576 768w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?resize=1024,768 1024w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?resize=489,367 489w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?resize=236,177 236w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?resize=152,114 152w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?resize=175,131 175w\"\n\t\t\t\t\t\t\tsizes=\"(max-width: 489px) 100vw, 489px\"\n\t\t\t\t\t\t\talt=\"Step 3: The concrete is conveyed into a Maxcrete remix surge hopper, which provided a high capacity to ensure a continuous concrete flow to the BSA 14000 HP-D trailer-mounted pump when transitioning to the next barge of ready-mix trucks.\"\n\t\t\t\t\t\t\tclass=\"lazy-load-image\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-caption=\"Step 3: The concrete is conveyed into a Maxcrete remix surge hopper, which provided a high capacity to ensure a continuous concrete flow to the BSA 14000 HP-D trailer-mounted pump when transitioning to the next barge of ready-mix trucks.\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-credit=\"Putzmeister America\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"carousel-slide hidden\"\n\t\t\t\t\tid=\"carousel-slide-6\"\n\t\t\t\t\trole=\"tabpanel\"\n\t\t\t\t\taria-roledescription=\"slide\"\n\t\t\t\t\t\t\t\t\t\taria-label=\"Slide 7 of 7\"\n\t\t\t\t\taria-hidden=\"true\">\n\n\t\t\t\t\t\t\t\t\t\t\t<!-- Lazy load other main images with data-src to be loaded only when needed -->\n\t\t\t\t\t\t<img\n\t\t\t\t\t\t\tsrc=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?w=225\"\n\t\t\t\t\t\t\tsrcset=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg 1000w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=184,300 184w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=768,1252 768w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=628,1024 628w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=942,1536 942w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=225,367 225w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=109,177 109w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=70,114 70w, https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?resize=80,131 80w\"\n\t\t\t\t\t\t\tsizes=\"(max-width: 225px) 100vw, 225px\"\n\t\t\t\t\t\t\talt=\"Step 4: A 38-meter Putzmeister placing boom places the concrete into a tremie pipe that sends the concrete 390 ft (119m) underwater.\"\n\t\t\t\t\t\t\tclass=\"lazy-load-image\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-caption=\"Step 4: A 38-meter Putzmeister placing boom places the concrete into a tremie pipe that sends the concrete 390 ft (119m) underwater.\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\tdata-credit=\"Putzmeister America\"\n\t\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\n\t\t<button class=\"carousel-next\"\n\t\t\t\taria-label=\"Next slide\"\n\t\t\t\ttype=\"button\">\n\t\t\t<span class=\"icon\" aria-hidden=\"true\"><\/span>\n\t\t<\/button>\n\t<\/div>\n\n\t<div class=\"carousel-captions-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"carousel-caption active\"\n\t\t\t\t\tid=\"carousel-caption-0\">\n\t\t\t\t\t<div class=\"carousel-caption__inner\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-credit\">Putzmeister America<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-caption\" data-full-caption=\"Barge-mounted Putzmeister concrete placing system places 12,000 cu yds (9,175m\u00b3) of concrete underwater to secure a water intake structure for the Third Straw project, which will draw water from the Lake Mead reservoir.\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"caption-preview\">\n\t\t\t\t\t\t\t\t\tBarge-mounted Putzmeister concrete placing system places 12,000 &#8230;\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"read-more-toggle\"\n\t\t\t\t\t\t\t\t\t\t\taria-expanded=\"false\"\n\t\t\t\t\t\t\t\t\t\t\taria-controls=\"caption-full-0\">\n\t\t\t\t\t\t\t\t\t\tRead More\t\t\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t<span id=\"caption-full-0\" class=\"full-caption hidden\">\n\t\t\t\t\t\t\t\t\t\tBarge-mounted Putzmeister concrete placing system places 12,000 cu yds (9,175m\u00b3) of concrete underwater to secure a water intake structure for the Third Straw project, which will draw water from the Lake Mead reservoir.\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"carousel-caption hidden\"\n\t\t\t\t\tid=\"carousel-caption-1\">\n\t\t\t\t\t<div class=\"carousel-caption__inner\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-credit\">Putzmeister America<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-caption\" data-full-caption=\"An aerial view of the equipment barge, which staged two complete concrete placing system setups\u2014one operational, one backup.\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"caption-preview\">\n\t\t\t\t\t\t\t\t\tAn aerial view of the equipment barge, which staged two complete&#8230;\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"read-more-toggle\"\n\t\t\t\t\t\t\t\t\t\t\taria-expanded=\"false\"\n\t\t\t\t\t\t\t\t\t\t\taria-controls=\"caption-full-1\">\n\t\t\t\t\t\t\t\t\t\tRead More\t\t\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t<span id=\"caption-full-1\" class=\"full-caption hidden\">\n\t\t\t\t\t\t\t\t\t\tAn aerial view of the equipment barge, which staged two complete concrete placing system setups\u2014one operational, one backup.\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"carousel-caption hidden\"\n\t\t\t\t\tid=\"carousel-caption-2\">\n\t\t\t\t\t<div class=\"carousel-caption__inner\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-credit\">Putzmeister America<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-caption\" data-full-caption=\"Continuous tremie pour lasts 12 days, with concrete outputs peaking over 100 cu yds an hour (76m\u00b3\/hr).\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"caption-preview\">\n\t\t\t\t\t\t\t\t\tContinuous tremie pour lasts 12 days, with concrete outputs peak&#8230;\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"read-more-toggle\"\n\t\t\t\t\t\t\t\t\t\t\taria-expanded=\"false\"\n\t\t\t\t\t\t\t\t\t\t\taria-controls=\"caption-full-2\">\n\t\t\t\t\t\t\t\t\t\tRead More\t\t\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t<span id=\"caption-full-2\" class=\"full-caption hidden\">\n\t\t\t\t\t\t\t\t\t\tContinuous tremie pour lasts 12 days, with concrete outputs peaking over 100 cu yds an hour (76m\u00b3\/hr).\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"carousel-caption hidden\"\n\t\t\t\t\tid=\"carousel-caption-3\">\n\t\t\t\t\t<div class=\"carousel-caption__inner\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-credit\">Putzmeister America<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-caption\" data-full-caption=\"Step 1: Ready-mix trucks are loaded on a transport barge, eight at a time, to deliver concrete for a tremie pour almost three miles from shore.\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"caption-preview\">\n\t\t\t\t\t\t\t\t\tStep 1: Ready-mix trucks are loaded on a transport barge, eight &#8230;\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"read-more-toggle\"\n\t\t\t\t\t\t\t\t\t\t\taria-expanded=\"false\"\n\t\t\t\t\t\t\t\t\t\t\taria-controls=\"caption-full-3\">\n\t\t\t\t\t\t\t\t\t\tRead More\t\t\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t<span id=\"caption-full-3\" class=\"full-caption hidden\">\n\t\t\t\t\t\t\t\t\t\tStep 1: Ready-mix trucks are loaded on a transport barge, eight at a time, to deliver concrete for a tremie pour almost three miles from shore.\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"carousel-caption hidden\"\n\t\t\t\t\tid=\"carousel-caption-4\">\n\t\t\t\t\t<div class=\"carousel-caption__inner\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-credit\">Putzmeister America<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-caption\" data-full-caption=\"Step 2: Concrete is discharged from ready-mix trucks onto Maxon conveyors located on the equipment barge.\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"caption-preview\">\n\t\t\t\t\t\t\t\t\tStep 2: Concrete is discharged from ready-mix trucks onto Maxon &#8230;\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"read-more-toggle\"\n\t\t\t\t\t\t\t\t\t\t\taria-expanded=\"false\"\n\t\t\t\t\t\t\t\t\t\t\taria-controls=\"caption-full-4\">\n\t\t\t\t\t\t\t\t\t\tRead More\t\t\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t<span id=\"caption-full-4\" class=\"full-caption hidden\">\n\t\t\t\t\t\t\t\t\t\tStep 2: Concrete is discharged from ready-mix trucks onto Maxon conveyors located on the equipment barge.\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"carousel-caption hidden\"\n\t\t\t\t\tid=\"carousel-caption-5\">\n\t\t\t\t\t<div class=\"carousel-caption__inner\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-credit\">Putzmeister America<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-caption\" data-full-caption=\"Step 3: The concrete is conveyed into a Maxcrete remix surge hopper, which provided a high capacity to ensure a continuous concrete flow to the BSA 14000 HP-D trailer-mounted pump when transitioning to the next barge of ready-mix trucks.\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"caption-preview\">\n\t\t\t\t\t\t\t\t\tStep 3: The concrete is conveyed into a Maxcrete remix surge hop&#8230;\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"read-more-toggle\"\n\t\t\t\t\t\t\t\t\t\t\taria-expanded=\"false\"\n\t\t\t\t\t\t\t\t\t\t\taria-controls=\"caption-full-5\">\n\t\t\t\t\t\t\t\t\t\tRead More\t\t\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t<span id=\"caption-full-5\" class=\"full-caption hidden\">\n\t\t\t\t\t\t\t\t\t\tStep 3: The concrete is conveyed into a Maxcrete remix surge hopper, which provided a high capacity to ensure a continuous concrete flow to the BSA 14000 HP-D trailer-mounted pump when transitioning to the next barge of ready-mix trucks.\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"carousel-caption hidden\"\n\t\t\t\t\tid=\"carousel-caption-6\">\n\t\t\t\t\t<div class=\"carousel-caption__inner\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-credit\">Putzmeister America<\/p>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"image-caption\" data-full-caption=\"Step 4: A 38-meter Putzmeister placing boom places the concrete into a tremie pipe that sends the concrete 390 ft (119m) underwater.\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"caption-preview\">\n\t\t\t\t\t\t\t\t\tStep 4: A 38-meter Putzmeister placing boom places the concrete &#8230;\n\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<button type=\"button\" class=\"read-more-toggle\"\n\t\t\t\t\t\t\t\t\t\t\taria-expanded=\"false\"\n\t\t\t\t\t\t\t\t\t\t\taria-controls=\"caption-full-6\">\n\t\t\t\t\t\t\t\t\t\tRead More\t\t\t\t\t\t\t\t\t<\/button>\n\t\t\t\t\t\t\t\t\t<span id=\"caption-full-6\" class=\"full-caption hidden\">\n\t\t\t\t\t\t\t\t\t\tStep 4: A 38-meter Putzmeister placing boom places the concrete into a tremie pipe that sends the concrete 390 ft (119m) underwater.\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/p>\n\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\n\t<div class=\"carousel-thumbnails-wrapper\" role=\"tablist\" aria-label=\"Thumbnail navigation\">\n\t\t<div class=\"carousel-thumbnails\">\n\t\t\t\t\t\t\t<button class=\"thumbnail-wrapper active\"\n\t\t\t\t\t\tdata-index=\"0\"\n\t\t\t\t\t\t\t\t\t\t\taria-label=\"Go to slide 1\"\n\t\t\t\t\t\taria-controls=\"carousel-slide-1\"\n\t\t\t\t\t\taria-selected=\"true\"\n\t\t\t\t\t\ttype=\"button\"\n\t\t\t\t\t\trole=\"tab\"\n\t\t\t\t>\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp83e4-2etmp-tcm45-1819898.jpg?w=150&#038;h=150&#038;crop=1\"\n\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\tclass=\"thumbnail\">\n\t\t\t\t<\/button>\n\t\t\t\t\t\t\t<button class=\"thumbnail-wrapper \"\n\t\t\t\t\t\tdata-index=\"1\"\n\t\t\t\t\t\t\t\t\t\t\taria-label=\"Go to slide 2\"\n\t\t\t\t\t\taria-controls=\"carousel-slide-2\"\n\t\t\t\t\t\taria-selected=\"false\"\n\t\t\t\t\t\ttype=\"button\"\n\t\t\t\t\t\trole=\"tab\"\n\t\t\t\t>\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp8c13-2etmp-tcm45-1819903.jpg?w=150&#038;h=150&#038;crop=1\"\n\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\tclass=\"thumbnail\">\n\t\t\t\t<\/button>\n\t\t\t\t\t\t\t<button class=\"thumbnail-wrapper \"\n\t\t\t\t\t\tdata-index=\"2\"\n\t\t\t\t\t\t\t\t\t\t\taria-label=\"Go to slide 3\"\n\t\t\t\t\t\taria-controls=\"carousel-slide-3\"\n\t\t\t\t\t\taria-selected=\"false\"\n\t\t\t\t\t\ttype=\"button\"\n\t\t\t\t\t\trole=\"tab\"\n\t\t\t\t>\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp9412-2etmp-tcm45-1819908.jpg?w=150&#038;h=150&#038;crop=1\"\n\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\tclass=\"thumbnail\">\n\t\t\t\t<\/button>\n\t\t\t\t\t\t\t<button class=\"thumbnail-wrapper \"\n\t\t\t\t\t\tdata-index=\"3\"\n\t\t\t\t\t\t\t\t\t\t\taria-label=\"Go to slide 4\"\n\t\t\t\t\t\taria-controls=\"carousel-slide-4\"\n\t\t\t\t\t\taria-selected=\"false\"\n\t\t\t\t\t\ttype=\"button\"\n\t\t\t\t\t\trole=\"tab\"\n\t\t\t\t>\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp776f-2etmp-tcm45-1819889.jpg?w=150&#038;h=150&#038;crop=1\"\n\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\tclass=\"thumbnail\">\n\t\t\t\t<\/button>\n\t\t\t\t\t\t\t<button class=\"thumbnail-wrapper \"\n\t\t\t\t\t\tdata-index=\"4\"\n\t\t\t\t\t\t\t\t\t\t\taria-label=\"Go to slide 5\"\n\t\t\t\t\t\taria-controls=\"carousel-slide-5\"\n\t\t\t\t\t\taria-selected=\"false\"\n\t\t\t\t\t\ttype=\"button\"\n\t\t\t\t\t\trole=\"tab\"\n\t\t\t\t>\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp6aca-2etmp-tcm45-1819881.jpg?w=150&#038;h=150&#038;crop=1\"\n\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\tclass=\"thumbnail\">\n\t\t\t\t<\/button>\n\t\t\t\t\t\t\t<button class=\"thumbnail-wrapper \"\n\t\t\t\t\t\tdata-index=\"5\"\n\t\t\t\t\t\t\t\t\t\t\taria-label=\"Go to slide 6\"\n\t\t\t\t\t\taria-controls=\"carousel-slide-6\"\n\t\t\t\t\t\taria-selected=\"false\"\n\t\t\t\t\t\ttype=\"button\"\n\t\t\t\t\t\trole=\"tab\"\n\t\t\t\t>\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp7db9-2etmp-tcm45-1819892.jpg?w=150&#038;h=150&#038;crop=1\"\n\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\tclass=\"thumbnail\">\n\t\t\t\t<\/button>\n\t\t\t\t\t\t\t<button class=\"thumbnail-wrapper \"\n\t\t\t\t\t\tdata-index=\"6\"\n\t\t\t\t\t\t\t\t\t\t\taria-label=\"Go to slide 7\"\n\t\t\t\t\t\taria-controls=\"carousel-slide-7\"\n\t\t\t\t\t\taria-selected=\"false\"\n\t\t\t\t\t\ttype=\"button\"\n\t\t\t\t\t\trole=\"tab\"\n\t\t\t\t>\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/zonda-develop.go-vip.net\/concrete-construction\/wp-content\/uploads\/sites\/10\/2025\/06\/tmp71ef-2etmp-tcm45-1819884.jpg?w=150&#038;h=150&#038;crop=1\"\n\t\t\t\t\t\taria-hidden=\"true\"\n\t\t\t\t\t\talt=\"\"\n\t\t\t\t\t\tclass=\"thumbnail\">\n\t\t\t\t<\/button>\n\t\t\t\t\t<\/div>\n\t<\/div>\n\n\t<\/div>\n <\/div><!-- \/wp:post-content -->  <\/div><!-- \/wp:group --><\/div><!-- \/wp:group --><!-- wp:paragraph  --><p>A continuous 12-day concrete pour tested the stamina and performance of a barge-mounted Putzmeister concrete placing system to place 12,000 cubic yards of concrete 390 feet below the water\u2019s surface\u2014an extremely long-distance feat for pumping concrete underwater. The pour secured the opening of a raw water intake structure for the Third Straw project on Lake Mead\u2014one of the largest U.S. municipal water projects.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>Currently, the city of Las Vegas draws about 90 percent of its drinking water through two horizontal intake pipelines or straws in the Lake Mead reservoir, tapping the Colorado River behind Hoover Dam. However, the depth of the drought-stricken lake has fallen more than 100 feet in the past decade. To avoid a potential crisis, the third straw is being built deeper in the lake. Its objective\u2014to protect the community from a water shortage in case the lake drops to a level that shuts down the existing two straws.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>Estimated at over $800 million, the officially named Intake No. 3 project is the most complicated and expensive construction job undertaken by Southern Nevada Water Authority (SNWA). In 2008, SNWA awarded the design-build contract to Vegas Tunnel Constructors LLC\u2014a joint venture of S.A. Healy Co., Lombard, Ill., and Impreglio S.p.A., Sesto San Giovanni, Italy. <\/p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><h3>Joining Forces<\/h3><!-- \/wp:heading --><!-- wp:paragraph  --><p>The project requires multiple construction facets, with a major concrete placement task that took center stage in March 2012. A Putzmeister concrete placing system supplied by Ralph\u2019s Concrete Pumping (Ralph\u2019s) of Seattle handled the complex process, utilizing two Series I detachable placing booms\u2014a 36-meter and 38-meter, two placing boom towers, two trailer-mounted concrete pumps\u2014a BSA 14000 HP-D and a BSA 2109 H-D, and Putzmeister\u2019s concrete delivery line with ZX ends. This delivery line system was used to alleviate the concern about concrete spillage in the water, as the line and couplings are leak-proof and rated for extremely high pressures.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>\u201cThe job was a far more logistically challenging and complex one than I ever imagined it would be when I first was contacted by Maxon Industries to coordinate the equipment for the project,\u201d says Skip Gribble, owner of Ralph\u2019s.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>Putzmeister and its Special Applications Business (SAB), a team of experienced engineers, focuses on the synergies of the manufacturer\u2019s family of products, which includes concrete pumping equipment, Telebelt telescopic belt conveyors, Shotcrete Technology and Pipe Technology, in addition to a partnership with Maxon Industries Inc. This partnership provides a complete systems approach that offers a wide range of complementary products to projects around the world in the tunnel, mining, dams, power generation, transportation, marine and offshore industries.<\/p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><h3>A Complex Process<\/h3><!-- \/wp:heading --><!-- wp:paragraph  --><p>A raw water intake structure, basically a concrete-and-steel funnel 100 feet tall and weighing 1200 tons, was floated almost three miles from shore and methodically sunk to the bottom of the lake, making its home in a huge 60-foot-deep pit that was previously blasted with explosives. A single, continuous 12,000-cubic-yard concrete pour was needed to fill in the hole and keep the structure in place. <\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>The multifaceted concrete placing process started on shore with an onsite batch plant set up to continuously supply a specially-designed concrete mix. Ready-mix trucks, each loaded with 10 cubic yards of concrete, drove onto a transport barge, eight at a time, to be ferried across the water with their drums turning. Their destination was an equipment barge about three miles from shore. To maintain a non-stop flow for more than 250 hours, three transport barges kept 32 ready-mix trucks cycled between the shore and barge.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>At the equipment barge, the crew set up the placing system that was specifically chosen to place concrete in the most efficient manner and ensure the mix maintained its specified properties. Due to the critical nature of the pour, two complete concrete equipment setups were installed on the barge\u2014one system would be operational while the second was on standby for maintenance and backup. <\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>Once the ready-mix trucks reached the equipment barge, concrete was discharged onto a 40-foot Maxon conveyor that transferred the concrete to a second conveyor needed to elevate the concrete into a Maxcrete remix surge hopper. The hopper, with bi-rotational agitator shaft, allowed retempering the concrete as needed from the 1200 plus loads, helping to ensure quality concrete from the first to the last yard. The 10-cubic-yard hopper also provided surge capacity during the transition when the first transport barge would pull away and the next would arrive. This would provide a continuous concrete flow to the BSA 14000 trailer-mounted pump, paired with the 38-meter placing boom as the primary operational system.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>In turn, the high pressure trailer pump pumped the mix through 20 feet of Putzmeister delivery line to the placing boom mounted on a 20-foot-tall freestanding tower. No counterweight was required, so it offered a lighter weight on the equipment barge floating atop the water. The placing boom, capable of extending 108 feet, 7 inches horizontally, maneuvered its four-section boom into a 10-foot-diameter tremie pipe that delivered the concrete 390 feet to the lake\u2019s bottom.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>No divers were in the water guiding the work. Instead, the crew at the surface used sonar, GPS sensors, and a single remote-controlled submarine to monitor what was happening below the water\u2019s surface.<\/p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><h3>Equipment Requests <\/h3><!-- \/wp:heading --><!-- wp:paragraph  --><p>\u201cThe placing boom was powered by a three-cylinder diesel power pack instead of the more commonly used electric power pack, which would have required a great deal of power from a generator,\u201d says Gribble. <\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>\u201cPlus, as a precaution, the job specified that our equipment use a biodegradable vegetable oil, instead of hydraulic oil, during operation on the barge,\u201d says Gribble. \u201cThe equipment performed to expectations with the special oil.\u201d<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>\u201cAt times, concrete output peaked over 100 cubic yards an hour, which is a high volume for this type of application, especially with the distance and steps involved to consistently move the concrete from the shore to the bottom of the lake,\u201d adds Gribble.<\/p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><h3>Wind Causes Havoc<\/h3><!-- \/wp:heading --><!-- wp:paragraph  --><p>The pour was proceeding as planned until the sixth day when strong winds gusted up to 60 mph on the lake, sending waves crashing over the platform and causing treacherous conditions for the barges ferrying ready-mix trucks. The job shut down for nine hours.<\/p><!-- \/wp:paragraph --><!-- wp:paragraph  --><p>Although strong winds caused a temporary delay, it didn\u2019t affect the quality of the finished product because the concrete mix had a 30-hour set time. The set time was initially specified to provide ample time to inch the concrete around the intake structure and add new layers before hardening. However, the 30-hour set time also accommodated the unexpected wrath of nature.<\/p><!-- \/wp:paragraph --><!-- wp:heading {\"level\":3} --><h3>Three-Mile Journey<\/h3><!-- \/wp:heading --><!-- wp:paragraph  --><p>Eventually, the intake structure will connect to a 20-foot-diameter, 15,000-foot-long concrete panel reinforced tunnel under the lake bed. This will occur when a tunnel-boring machine on a 1571-day mission reaches the intake structure, after digging three miles through solid rock beneath Lake Mead. The entire raw water intake project is presently slated for completion in early 2014.<\/p><!-- \/wp:paragraph --> ","protected":false},"excerpt":{"rendered":"<p>A continuous 12-day concrete pour tested the stamina and performance of a barge-mounted Putzmeister concrete placing system to place 12,000 cubic yards of concrete 390 feet below the water\u2019s surface\u2014an extremely long-distance feat for pumping concrete underwater. 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