Mixing Strength With Satisfaction JAMAICA AIR TRAIN STATION, QUEENS, NY KING PACKAGED MATERIALS COMPANY 1 800 461-0566 • [email protected] • www.kpmindustries.com MS-D1 PROJECT: Jamaica Air Train Station Queens, NY SPECIFIER: The Port Authority of New York and New Jersey Newark, NJ CONTRACTOR: Norberto Construction Medford, NY PRODUCT: MS-D1 QUANTITY: 450 m 3 (16000 ft 3 ) COMPLETION: Winter 2001 As part of The Port Authority’s Light Rail System (Air Train) project to connect John F Kennedy International Airport to the LIRR and the NYC Transit’s E, J and Z trains, the existing Jamaica Station in Queens, NY required an extensive renovation. A portion of the design called for the construction of a foundation / crash wall on the south side of the existing station. The wall varied in both thickness and height and measured approximately 70 m x 10 m x 0.75 m (230 ft x 32 ft x 2.5 ft). The original specification called for the wall to be cast-in place concrete. The difficulty in ensuring the encapsulation of the structural steel and the required utilities, difficult access to the site and problems related to the tight project schedule led Perini/Tutor-Saliba JV, the project’s successful contractor to investigate other options. Previous success with shotcrete prompted Perini to approach Norberto Construction (their shotcrete sub-contractor) about the possibility of constructing the wall using shotcrete. Norberto Construction requested that KING assist with design and together they proposed through Perini/Tutor-Saliba, the alternate concept of constructing the wall with KING MS-D1. The dry mix shotcrete material proposed by KING, was air-entrained to improve durability and finishability and met all of the hardened property requirements outlined in the initial concrete specification, including the use of coarse aggregate to reduce shrinkage. To ensure Norberto Construction’s shotcrete crews were capable of encapsulating all of the steel, especially the 45 cm (18 inches) deep whalers / tiebacks, mock-up panels duplicating the specified wall’s structural steel configuration were constructed and shot. Cores taken from the back of the panels met all requirements outlined by PANYNJ and Norberto Construction was given approval to commence with the application of shotcrete. The construction of the wall was completed on time and the outcome was once again testimony to the skill of Norberto’s shotcrete crews and the ability of shotcrete to meet the challenges of unique project requirements.

JAMAICA AIR TRAIN STATION, QUEENS, NY€¦ · JAMAICA AIR TRAIN STATION, QUEENS, NY KING PACKAGED MATERIALS COMPANY 1 800 461-0566 • [email protected] • MS-D1

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Mix ing St r ength Wi th Sat i s fac t ion

JAMAICA AIR TRAIN STATION, QUEENS, NY

KING PACKAGED MATER IALS COMPANY1 800 461-0566 • construct ionproducts@kpmindustr ies.com • www.kpmindust r ies .com

MS-D1

PROJECT: Jamaica Air Train Station Queens, NYSPECIFIER: The Port Authority of New York and New Jersey Newark, NJCONTRACTOR: Norberto Construction Medford, NYPRODUCT: MS-D1QUANTITY: 450 m3 (16000 ft3)COMPLETION: Winter 2001

As part of The Port Authority’s Light Rail System (Air Train) project to connect John F Kennedy International Airport to the LIRR and the NYC Transit’s E, J and Z trains, the existing Jamaica Station in Queens, NY required an extensive renovation.

A portion of the design called for the construction of a foundation / crash wall on the south side of the existing station. The wall varied in both thickness and height and measured approximately 70 m x 10 m x 0.75 m (230 ft x 32 ft x 2.5 ft). The original specification called for the wall to be cast-in place concrete. The difficulty in ensuring the encapsulation of the structural steel and the required utilities, difficult access to the site and problems related to the tight project schedule led Perini/Tutor-Saliba JV, the project’s successful contractor to investigate other options. Previous success with shotcrete prompted Perini to approach Norberto Construction (their shotcrete sub-contractor) about the possibility of constructing the wall using shotcrete. Norberto Construction requested that KING assist with design and together they proposed through Perini/Tutor-Saliba, the alternate concept of constructing the wall with KING MS-D1.

The dry mix shotcrete material proposed by KING, was air-entrained to improve durability and finishability and met all of the hardened property requirements outlined in the initial concrete specification, including the use of coarse aggregate to reduce shrinkage.

To ensure Norberto Construction’s shotcrete crews were capable of encapsulating all of the steel, especially the 45 cm (18 inches) deep whalers / tiebacks, mock-up panels duplicating the specified wall’s structural steel configuration were constructed and shot. Cores taken from the back of the panels met all requirements outlined by PANYNJ and Norberto Construction was given approval to commence with the application of shotcrete.

The construction of the wall was completed on time and the outcome was once again testimony to the skill of Norberto’s shotcrete crews and the ability of shotcrete to meet the challenges of unique project requirements.