Pavement

PAVEMENT REHABILITATION

JZN Engineering provides quality services to find the most responsive and cost effective solutions for pavement rehabilitation. Our experience with pavement rehabilitation allows us to prepare and carry out a comprehensive investigation process that can help identify the causes of pavement failure and provide effective solutions and recommendations for the pavement rehabilitation process. The investigation process aims to find possible causes of pavement distress and the extent of deterioration of the existing pavement. The investigation phase includes data collection, characterization of pavement distress, analysis of data, hypothesis of pavement failure and recommendations. The site study usually involves soil characterization by means of performing soil exploration borings and/or test pits, and ground water seepage evaluation.

JZN Engineering provides construction quality control and assurance during the pavement rehabilitation process. This process includes inspection during the excavation of unsuitable soils, backfill and compaction of soils, subgrade testing and concrete and asphalt testing.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Field and Laboratory Soil Permeability and Percolation Determination

¨ Laboratory testing of soils, asphalt and concrete

¨ Contractor Support

¨ Construction Quality Control/Special Inspection

MULTI SITE PAVEMENT REHABILITATION

JZN Engineering provided quality services to more than 15 Wells Fargo branch offices to find the most cost effective solutions for pavement rehabilitation. The Bank offices were located in new Jersey, New York and Connecticut. Our investigation involved taking core samples in various locations in the existing parking lots to analyze the most cost effective solution to rehabilitate the existing parking lots. Analysis of the parking lots included a pavement failure analysis and characterization of the pavement distress.

JZN Engineering provided geotechnical investigation and engineering services to assess the subsurface soils conditions and provided recommendations for pavement design. The pavement analysis and investigation allowed us to provide recommendations for preparation of bearing surfaces and to provide quality control in order to insure that the rehabilitation process would hold up for years to come.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Laboratory testing of soils, asphalt and concrete

RETAIL CENTER PARKING LOT REHABILITATION BOROUGH OF STATEN ISLAND, NEW YORK

The existing parking lot is part of a Retail Center located at 2040-2060 Forest Avenue in the Borough of Staten Island, New York.

JZN conducted a geotechnical investigation consisting of drilled soil boring explorations within the parking lot and pavement core recoveries in order to estimate the engineering characteristics of the pavement bearing and subgrade soils. JZN performed a visual observation of the parking lot which was determined to be in poor conditions with a significant amount of longitudinal and alligator cracks, potholes and evidence of patching.

JZN determined that the parking lot pavement distresses were caused as a result of excessive loading, poor subgrade conditions and water infiltration between the pavement overlays.

JZN provided different options for the existing pavement rehabilitation which included milling of the existing surface course following restauration to existing grades with flexible pavement; and full depth repair consisting of complete pavement removal, followed by subbase preparation, followed by new pavement installation.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Pavement Coring

STOP & SHOP SUPERMARKET PARKING LOT REHABILITATION BOROUGH OF QUEENS, NEW YORK

The subject parking lot is part of the Stop & Shop supermarket located at 8989 Union Turnpike in Glendale, Borough of Queens, New York. The site is bounded by railroad tracks to the north and east, Union Turnpike to the south, and baseball fields to the west. The property was developed with a factory which was renovated into the existing supermarket. The former factory structure was partially demolished within the northern and western areas leaving the former factory’s slab to serve as the parking lot area for the supermarket.

JZN provided geotechnical investigation services in support of the parking lot rehabilitation. The services included pavement visual observation, and exploration soil borings to obtain information on subsurface soils and groundwater conditions within the distressed parking area. Pavement core samples were acquired during the investigation to determine the pavement structure. JZN determined the pavement distress was caused due to uncontrolled fill materials that were unable to support traffic loads. In addition, the pavement was originally designed for interior use and the pavement exposure to weather was contributing to the increased pavement distress.

Due to the poor conditions of the pavement, JZN recommended its complete replacement. Additional recommendations included bearing surface preparation procedures and pavement structure specifications.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Pavement Coring

HUBBARD’S COMMONS PARKING LOT REHABILITATION BOROUGH OF QUEENS, NEW YORK

The subject parking lot is part of the Hubbard’s Commons located at 713 Sunrise Highway and Hubbard’s Path in West Babylon, Suffolk County, New York. The site is bounded by Sunrise Highway to the south, Hubbard’s Path to the east, a residential development to the north, and an empty lot to the west.

JZN provided geotechnical investigation services in support of the parking lot rehabilitation. The investigation services consisted of drilling soil boring explorations and conducting visual examinations of the pavement in order to obtain information on subsurface soils, groundwater conditions, and pavement composition.

JZN provided multiple options to rehabilitate the distressed parking lot area. These options included milling followed by overlay and a full depth repair. In addition, JZN provided site preparation, earthwork and construction recommendations, and new pavement design criteria.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Pavement Coring

STOP & SHOP SUPERMARKET PARKING LOT REHABILITATION BOROUGH OF QUEENS, NEW YORK

The subject parking lot is part of the Stop & Shop supermarket located at 64-45 Myrtle Avenue in Glendale, Queens Borough, New York. The site is bounded by Central Avenue to the north, Cypress Hills Street to the southwest, Myrtle Avenue to the south, and 65th Street to the east.

JZN provided a comprehensive geotechnical investigation that included exploration soil borings to explore the subsurface conditions at the site, pavement coring to determine the pavement structure, and pavement visual inspection to determine the degree of pavement distress.

Our field exploration revealed a pavement composition consisting of a thin former pavement section covered by a newer pavement section. These observations allowed us to determine that the pavement distresses were possibly caused by cracking from the former underlying relatively thin pavement section.

JZN provided recommendations regarding site preparation, soil management and construction considerations in support of the pavement rehabilitation program. Our pavement rehabilitation recommendations included details for a mill and overlay option and a new pavement construction.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Pavement Coring

HOME DEPOT PARKING LOT REHABILITATION HUNTINGTON, SUFFOLK COUNTY, NEW YORK

The subject parking lot is part of the Home Depot located at 839 New York Avenue, Town of Huntington, Suffolk County, New York. The site is a parking lot located within an existing retail development.

JZN conducted a geotechnical investigation program to obtain information on subsurface soil and groundwater conditions. We provided recommendations for existing pavement rehabilitation, as well as design recommendations and related earthwork for the lowering of the existing parking lot and construction of new retaining walls. Our investigation program included drilled soil boring explorations, pavement coring, and visual pavement inspection.

JZN provided recommendations for the parking lot design and considerations for the retaining wall foundation design. Site preparation, earthwork management and construction recommendations were also provided.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Pavement Coring

FREEPORT COMMONS EXISTING PAVEMENT REHABILITATION FREEPORT, NASSAU COUNTY, NEW YORK

The subject parking lot is part of the Freeport Commons located at 160 East Sunrise Highway & Liberty Avenue in Freeport, Nassau County, New York.

JZN conducted a geotechnical investigation program to obtain information on subsurface soil and groundwater conditions, and to provide recommendations for existing pavement rehabilitation and proposed new paved parking lot design and related earthwork. The scope of the geotechnical engineering services included subsurface exploration by means of soil borings and pavement cores. The study was performed in order to estimate the engineering characteristics of the soils at the site and the existing pavement conditions.

JZN provided recommendations for the parking lot remediation including pavement design, specifications for site preparation, earthwork management and construction considerations.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Pavement Coring

NEWPORT PLAZA SHOPPING CENTER EXISTING PARKING LOT REHABILITATION NEWINGTON, HARTFORD COUNTY, CT

The subject parking lot is part of the Newport Plaza Shopping Center located at 3164 Berlin Turnpike (CT-15) & Deming Street in Newington, Hartford County, Connecticut.

JZN conducted a geotechnical study to obtain information on subsurface soils, and groundwater conditions, and to provide recommendations for existing pavement rehabilitation of the existing parking lot. The scope of our geotechnical engineering services included subsurface exploration by means of soil borings and pavement cores. The results of the geotechnical study were used to estimate the engineering characteristics of the subsurface soils and the existing conditions of the pavement.

JZN provided recommendations for the parking lot rehabilitation including several options as well as recommendations for site preparation, earthwork management and construction considerations.

PROJECT SERVICES

¨ Subsurface Investigation

¨ Pavement Coring