Replacement of Magnolia Avenue Bridge

The existing Magnolia Avenue Bridge will be replaced with a single span structure consisting of cast-in-place reinforced concrete footings and abutments with 18” deep precast concrete adjacent slab beams forming the superstructure. The cast-in-place footing and abutment construction will be facilitated by the installation of temporary and permanent cofferdams as depicted on the Contract Plans. […]

PS195X Bronx New York – NYC School Construction Authority

In partnership with Navillus Contracting, Big Apple Group has been brought in to monitor construction activities with the goal of protection the adjacent structures, tenants and most important the students nearby from potential high vibrations and excessive building movement from the adjacent construction activities. PS 195/196X is a new 55,000 square feet new addition construction […]

Northern Boulevard Bridge Fender System Over the Flushing River Queens, NY

The project consists of the removal and replacement of the dolphin and pier fendering system at Pier 26 and 27 on the Northern Boulevard Bridge over the Flushing River in Queens, New York. The existing timber fenders along the piers will be replaced with rubber fenders. The existing timber dolphin fender system will be replaced […]

Periodic Inspection Requirements for NYC Parking Structures

Parking in New York City is about as fun as, well… parking in New York City. One does not have to venture far out to realize that it’s sometimes more convenient to pay for a spot inside the many parking structures throughout our wonderful city. Some of these parking lots are open air, while others […]

NJDOT Sign Structure Replacement

Initiated by the Bridge Management system, this project includes the removal of existing sign structures and replacement with new sign structures that meet all current standards. Big Apple Group provides construction monitoring services such as Pre and Post-Construction Surveys, Optical Monitoring, and Vibration Monitoring and for J. Fletcher Creamer & Son, Inc. of Hackensack, NJ […]

625 Fulton Street Brooklyn Construction Monitoring

How wireless sensors were used to monitor an MTA tunnel during construction of a 79 floor mixed-use skyscraper in downtown Brooklyn, New York Challenge Construction began in summer 2021 on a 942 ft, 79 floor skyscraper in the centre of downtown Brooklyn, New York. The mix-use building will rise 240 ft above what is currently […]

How to Avoid the Effects of Expansive Soil on Buildings?

Several measures like construction of deep piers, soil replacement, keeping moisture at a constant level, chemical soil stabilization, use of void forms can be adopted to avoid detrimental effects of expansive soil on structures and their foundations. One or a combination of these preventive methods can be considered while planning construction over expansive soil. The soil investigation […]

Preliminary Works in Construction

Preliminary works refer to all the activities that are involved in a construction site before the actual work commences, such as demolition, site clearance, site survey, soil survey, planning, designing, and cost estimation. In this article, we briefly discuss all the preliminary works involved in the construction of a project. 1. Demolition The demolition of the […]

Construction of Slab on Ground- Design Elements

The construction of slab on ground requires certain basic design elements. These design elements must be enlisted and added in the contract documents by the designer in charge before asking for a bidding. The design elements required for slabs on ground are: The Materials required for base and the sub – base preparation. The vapor […]