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Optical Monitoring


New York City Building Code

§ 3306.12 Monitoring of adjoining structures during demolition 

Where a bearing masonry or wood framed building shares a party wall or party foundation with a building that is to undergo a full demolition, a demolition performed in conjunction with work that meets the requirements of Section 101.4.5 of Title 28 of the Administrative Code, a demolition that results in the demolition of more than 50 percent of the gross floor area of the building during the course of work over any 12-month period, or a demolition that results in the removal of one or more floors during the course of work over any 12-month period, such bearing masonry or wood framed building shall be monitored during the demolition operation. The monitoring shall be in accordance with a monitoring plan prepared or accepted by the registered design professional who prepared the submittal documents in accordance with Section 3306.5. The monitoring plan shall be acceptable to the commissioner and shall include but not be limited to, the monitoring frequency, reporting requirements for the monitoring program, anticipated movement and settlement thresholds, and procedures to be implemented when thresholds are exceeded.


If the Monitoring Plan requires optical monitoring it is crucial that it be done correctly. Monitoring is a significant aspect of construction and industrial projects, ensuring the safety and integrity of structures in proximity to heavy machinery or dynamic operations such as pile driving. Optical monitoring is revolutionizing the way we assess and ensure the stability of structures in construction and engineering projects. By utilizing cutting-edge optical sensors and advanced technology, we can monitor structural movements and deformations with unmatched precision. This non-intrusive method provides real-time data, allowing us to detect even the slightest shifts or changes in structures. Optical monitoring plays a vital role in ensuring the safety and integrity of buildings. Our expert team employs these innovative techniques to offer comprehensive structural health monitoring solutions, enabling proactive decision-making, risk mitigation, and the long-term durability of projects. With optical monitoring, we ensure that your structures and your adjacent neighbor's remain safe and secure throughout their lifespan. In addition, our optical monitoring solutions allow you to be compliant with current NYC DOB regulations.


Our team will go out to the site and install all targets on the adjacent structures as per the monitoring plan. Our initial baseline survey will identify and measure the precise locations of all the points. We will return to the site daily/weekly as needed to survey the points and detect any movements. With our expertise, you can confidently proceed with your projects, knowing that the adjacent structures are monitored, maintaining safety and structural stability.


After every survey, you will receive a detailed and comprehensive report outlining the work that was performed and detailing the results of the survey. This will include graphs, drawings and tables that will review and assess the conditions of the neighbors and give precise measurements of the location of the targets as part of the optical monitoring program. All our reports are reviewed and stamped by our principal Professional Engineer.

Contact us for more information!

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