Mammoet World - Mammoet BV

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Civil “The water rose by almost 600 mm in a week” “Help avoid delays to the launch schedule” 32 33 A joint effort The installation of this bridge was a joint effort by teams from Mammoet Benelux, Mammoet Maritime and Mammoet Germany. The bridge (90 meters long, 17 meters wide, 620 tons) first had to be transferred from a high quay onto our barge. This required tall skid track supports on the barge, to align with the quay. We could adjust the supports by 200 mm Mammoet USA was contracted to install the massive steel towers that are part of the new Lightning Protection System at the Kennedy Space Center in Cape Canaveral, Florida. The lightning protection system diverts the surge of electrical current of lightning strikes away from the space shuttle. The system will provide better protection from lightning strikes and help avoid delays to the launch schedule. The three 181 meter steel and fiberglass towers were partially assembled horizontally on the ground, then lifted into the vertical position with the M 21000. This crane was fitted with a 103.6 meter main boom and 91.4 meter luffing jib. but due to the weather conditions the water rose by almost 600 mm in a week. Fortunately we could cope with that but the resulting high centre of gravity made the job quite a challenge. After loading the bridge onto the barge we moved it to the installation site where we positioned it with winches and installed the bridge on its foundations. Mammoet at Cape Canaveral LOCATION: HAVELBERG, GERMANY JOB: INSTALLING A BRIDGE CHALLENGE: UNEXPECTEDLY HIGH WATER LEVEL, HIGH CENTRE OF GRAVITY LOCATION: CAPE CANAVERAL, FLORIDA, USA JOB: INSTALLING LIGHTNING PROTECTION TOWERS CHALLENGE: LIFTING AT A SPECIAL SITE
Complex container crane lift Mammoet supported the assembly and installation of a container crane at a quay on an inland waterway in the Netherlands. We first unloaded the crane sections from the trucks and positioned them to be welded into place. The lifting operations to assemble the crane were unusually complex and required no fewer than six cranes. Initially the main span (86 meters, 200 tons) was lifted to 37 meters. The crane legs were then lifted, positioned and fixed to the main span. Changes in the assembly sequence and weights more than 25% higher than originally quoted made this a particularly interesting job. Fortunately the expertise and flexibility of our employees ensured the successful completion of the project. LOCATION: VENLO, THE NETHERLANDS JOB: ASSEMBLING A CONTAINER CRANE CHALLENGE: COMPLEX LIFT, LAST-MINUTE CHANGES Skidding in Frisco Gantry on SPMTs In 2007 Mammoet USA replaced a section of the San Francisco Bay Bridge. As a follow-up to that project, Mammoet was asked to replace a second section. This job posed two major challenges: a much more complicated support structure than before, and spans 46 meters above ground. Sixtyeight sections of skid track and sixteen skid shoes were installed, together with approximately 500 tons of steel structure and 32 jacks for stabilizing both bridge spans. Within two hours the old bridge section (7.6 x 1.9 meters, 2,966 tons) was lifted off its bearings. Some connecting bracings were then removed and the section was then skidded 30 meters north and lowered onto supports. The new span, weighing 3,168 tons, was then skidded into place in less than one day. “Within two hours the old bridge section was lifted off its bearings” Civil LOCATION: SAN FRANCISCO BAY BRIDGE, CALIFORNIA, USA JOB: SKIDDING A BRIDGE SECTION CHALLENGE: COMPLEX SUPPORT STRUC- TURE, 45 METERS ABOVE GROUND LEVEL Mammoet installed three bridge sections across railway tracks in Berlin. We used a whole range of equipment for this job: SPMTs, a gantry, a crane and skid tracks. The work went very quickly but we then had to change our plans as the customer changed the work schedule. The site was quite constricted and there was a bend in the SPMT route, leaving us with only a 200 mm gap on each side. However, the whole project went well and was completed on schedule and to the satisfaction of the customer. LOCATION: BERLIN, GERMANY JOB: INSTALLING THREE BRIDGE SECTIONS CHALLENGE: SHORT TIME WINDOWS, SCHEDULE CHANGES
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