Flat Sawing | Concrete Openings

Concrete Sawing Only Choice to Upgrade DFW

Mar01

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Concrete Sawing Only Choice to Upgrade DFW

Posted by Russell Hitchen on Mar 1, 2019

Concrete Sawing Only Choice to Upgrade DFW

The Dallas-Fort Worth International Airport (DFW) is the ninth-busiest airport in the U.S., with nearly 1,000 flights arriving and departing daily serving over 69 million travelers each year. Aircraft take off and land from seven runways, all of which are the original runways from the airport’s construction in 1973. Airport officials determined that Runway 17C-35C was in need of replacement, and a CSDA contractor was chosen to provide a solid surface for takeoff and landing. Dual rider saws from Lissmac make part of the over 115,000 square yards of cuts to remove the damaged portions of Runway 17C/35C at DFW. General Contractor Austin Bridge & Road headed up this massive project. Over 115,000 square yards of runway and taxiway needed to be removed and replaced without damaging the adjacent runways or damaging the substructure. This included replacing the Portland Cement Concrete (PCC) keel along with some taxiway replacements for a total shoulder reconstruction. Austin Bridge & Road called on CSDA member Diamond Drilling & Sawing Company of Denver, Colorado to assist with the runway removal and replacement. Non-destructive testing methods were used by DFW officials to determine that there were many damaged concrete panels on the runway in need of repair. Airport runways are costly and logistically challenging to shut down, so a method to quickly and efficiently remove the damaged runway sections was needed. Concrete sawing with diamond tools was the chosen method, as this method would protect the underlying structures and base under the Portland Cement Concrete Pavement (PCCP) from damage. Additionally, sawing the runway into sections that could then be removed, allowed the damaged sections to be removed quickly and would not require the base material to be replaced. The sawing portion of the project commenced on May 24, 2018. The first step in this process was to cut the PCCP into sections that were able to be removed by the general contractor. These sections measured 8.3 by 8.3 by 1.5 feet and weighed approximately 16,000 pounds. Husqvarna 7000, Husqvarna 99HP and Lissmac 138HP Diesel slab saws were used to make these cuts. Blades ranged from 20 to 48 inches and were purchased from Diamond Products and Lissmac. Once the sections were cut, they were removed by excavators. All slurry on the jobsite was removed using vacuums. After all cut sections were removed, the general contractor...

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Protecting the Environment one cut at a time

Mar01

0

Protecting the Environment one cut at a time

Posted by Russell Hitchen on Mar 1, 2019

Protecting the Environment one cut at a time

A main highway in New Zealand has been undergoing a multi-year improvement and expansion project, and in winter 2019, a section with over-water bridges in New Zealand needed to be expanded. It was determined there was only one way to complete the job quickly and safely.Concrete cutting with diamond tools would allow for pre-planning of cut sections and a fast, clean removal of roadway sections. As this series of bridges and roads also spanned a tidal creek, it was imperative that no debris or slurry be allowed to fall into the creek, and also that no fly rock would strike vehicle traffic. The SH1 Southern Motorway on the North Island of New Zealand is part of State Highway 1, the longest and most significant road in the country. SH1 runs for 2,033 km (1,263 miles) and is primarily a two-lane single carriageway. It is an essential part of Auckland’s transport network and is the primary route between Auckland, Hamilton and Tauranga. The Southern Corridor Improvements Project, which will cost $268 million (USD$183 million) and runs for over four years, covers the stretch of SH1 from the SH20/SH1 connection at Manukau down to Papakura in the south. CSDA member A1 Kiwi Cutters & Drillers Ltd. of Auckland was selected as the cutting contractor on the Southern Corridor Improvements project by the general contractor and the New Zealand Government. Roughly four months of planning took place before any work commenced, which contributed to the successful outcome of the project. The entire project was to convert a two-lane section of motorway to a three-lane by constructing a temporary bridge, widening some existing bridges, removing other existing bridges and building a new wider bridge. The temporary bridge was constructed first to allow for southbound traffic to be diverted while the northbound traffic was diverted to the old southbound lanes. Then, the existing northbound bridge was removed, and a new wider bridge was constructed in its place. Both north and southbound traffic was then diverted to the new bridge while the old southbound and temporary bridges were removed to allow for construction of the new, wider southbound bridge. A1 Kiwi Cutters was tasked with removing the existing southbound bridge and temporary bridge, including head stock and bridge beams. Concrete cutting was determined to be the best option for removing the old bridges primarily for...

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Home » Flat Sawing

Turning the Tide

Aug30

Turning the Tide

Posted on Aug 30, 2015

A specialist contractor drilled over 1,400 holes and played an integral role in the £3.4-million (approximately $5.4 million) restoration of a 100-year-old pier on the northeast coast of England.

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Clean Cutting in Pittsburgh

May29

Clean Cutting in Pittsburgh

Posted on May 29, 2015

A unique and challenging job was performed by a specialty contractor that involved 834 square feet of concrete wire sawing and the removal of cut sections weighing approximately 26,000 pounds.

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South Street Seaport Redevelopment

Nov07

South Street Seaport Redevelopment

Posted on Nov 7, 2014

As part of a major redevelopment project on a pier in Lower Manhattan, New York, a concrete cutting contractor was given the challenge of coring 2,000 holes, flat sawing 22,000 linear feet and wire sawing 400 pier caps.

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SPARC of Ingenuity

Nov06

SPARC of Ingenuity

Posted on Nov 6, 2014

A $40-million project is underway to transform the former home of Minor League Baseball’s Columbus Clippers into a state-of-the-art racetrack and automotive research and training center.

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Semper Paratus [Always Ready]

Nov05

Semper Paratus [Always Ready]

Posted on Nov 5, 2014

Earlier this year, a general contractor was commissioned by the United States Coast Guard to remove an old concrete wharf and several finger piers at the military organization’s boat station in San Juan, Puerto Rico.

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Escape Route

Sep24

Escape Route

Posted on Sep 24, 2014

After discovering a dry dock was not living up to its name and retaining approximately 12,000 cubic meters (423,776 cubic feet) of water, a dockyard owner began looking for precise, cost-effective ways to correct the situation.

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