A SLAB REMOVAL BUCKET FOR BRIDGE DECK AND CONCRETE PAVEMENT REMOVAL PROJECTS.
Slab Crab buckets are the solution for the removal of concrete slabs. They range in bucket widths from 24 inch to 60 inch. The Slab Crab models are manufactured to process slabs ranging from 4″ to 20″ thick and will fit 20,000 – 150,000 pound excavators and backhoes. Available as either a direct pin-on or with the Kenco Wedgebolt Coupler.
The concrete pavement is simply saw cut into manageable pieces. Size of each slab depends on the lifting capability of the machine that the Slab Crab is being used on. Once the pavement has been cut, the slab removal process quickly becomes a one man job. Just slide the teeth of the Slab Crab under the pavement and tilt up. This action will cause the pavement to break off at the cut. The slab can now be lifted and placed directly onto the bed of a waiting truck or stacked out of the way. There is no debris cleanup and the subbase doesn’t get damaged.
When the job requires slab removal, the Slab Crab is the superior choice.
The Slab Crab comes in widths of 24 to 60 inches and processes slabs up to 20″ thick. The Slab Crab is designed and constructed using high-yield, abrasive-resistant alloy steels for exceptional durability… even on the toughest demolition jobs.
Slab Crab Reviews
The original Lewiston-Queenston suspension bridge was built in 1851 and provided passage over the Niagara River between the United States and Canadian borders. This bridge was destroyed in 1857 when high winds caused the center section to collapse. It was not rebuilt until 1899. The second suspension bridge stood for over 60 years.
In 1962, the Lewiston-Queenston Bridge replaced the suspension bridge. This arch bridge was built at a cost of $16,000,000. It is a four lane divided structure with a pedestrian sidewalk that allowed both foot and vehicular traffic between the United States and Canada. Itsx span stretches 1600 feet between abutments and hovers 370 feet above the Niagara River. In 2004, plans were implemented to replace the existing surface with a fifth lane by eliminating the pedestrian access route and middle barrier wall.
Since this bridge is a link between the borders of Canada and the United States, an international team effort was formed between Rankin Construction (CA) and Oak Grove Construction (U.S.). The project began in mid-December 2004. What had been forecasted as a two-year project was to be completed by November 15, 2005. The first step in removing the existing surface would set the pace for the remainder of the project. Cooperation between the two companies was essential.
They would both begin at the center of the bridge, signifying the border between the nations. Each would remove the slabs, working towards their respective riverbanks. It was imperative that the bridge remained balanced, so both companies would need to stay evenly within 42 feet of the bay. The steel structure was not to be damaged. Additionally, debris could not be dropped into the river.
Representatives of the two companies met to discuss ways to meet these objectives. They ended up hashing out the details over a cup of coffee.In order for the work to proceed smoothly, progress on both sides needed to occur at a similar pace. Oak Grove Construction had been using the Kenco Slab Crab for about 10 years. It provided them a fast, easy way to remove concrete slabs. According to Bob Spengler, Oak Grove Construction superintendent, “The Slab Crab is safer and much less labor intensive than other methods of removing slabs. Debris isn’t much of a factor, because the slabs can be removed intact.” Based off their suggestions, Rankin Construction also purchased a Kenco Slab Crab to use for this project.
First, the seven-inch thick concrete was saw-cut into manageable pieces of about 6 feet by 10 feet. (This resulted in over 350 slabs per side.) Rankin Construction mounted their Slab Crab on a John Deere 330, while Oak Grove Construction utilized a Komatsu 300. Both machines were up to the task. The teeth of the Slab Crab were slipped under the slab and the bond was broken. Each individual piece was tipped back to secure the load and lifted from the deck. The slab was then loaded onto a waiting truck. This process was repeated at a rate of about six slabs per hour on both sides of the border. By using this technique, the cooperative effort between the United States and Canada was accomplished in just eight days.