Crack Gauge Monitoring Services in NYC & the Tri-State Area
Our Services
Saltus provides visual measurement tools and optical structural monitoring to track existing building cracks, delivering detailed reports on crack progress, movement, and expansions to protect surrounding properties.
AT-A-GLANCE TECHNICAL SPECS
Accuracy Tolerance | Sub-millimeter / 0.1 mm precision visual and automated instruments |
Regulatory Compliance | NYC Building Code (BC) Section 3309, TPPN 10/88 (Historic Buildings), and MTA Transit Guidelines |
Mobilization Time | Emergency deployment within 24 hours for Stop Work Orders (SWOs) |
Data Delivery | Live 24/7 web dashboard access, automated SMS/email threshold alerts, and compliant PDF reports |
Site Power Options | Hardwired 110V AC, remote solar panels, or extended battery backups |
Adjoining Site Access | Professional third-party installation designed to minimize neighbor friction |
NYC Building Code BC 3309 & TPPN 10/88 Compliance
Under NYC Building Code (BC) Section 3309 (Protection of Adjoining Property), developers and contractors performing excavation or construction must protect adjacent structures from damage through continuous movement and settlement monitoring. For designated historic structures, compliance with TPPN 10/88 imposes even stricter monitoring thresholds.
Saltus technicians deploy calibrated visual crack gauges alongside automated monitoring instruments to detect micro-movements long before structural damage occurs. Whether conducting pre-construction surveys or responding to active site shifts, our defensible reporting ensures full compliance with DOB, MTA, and NYC DEP regulations.
Real-Time Structural Tracking & Defensible Reporting
Sub-Millimeter Precision: High-fidelity visual tools measure fractional millimeter shifts across structural expansion joints and masonry cracks.
24/7 Dashboard Integration: Track live movement data online or receive automated alerts the moment movement exceeds pre-set engineering thresholds.
DOB-Compliant Documentation: Receive formalized PDF reports structured for rapid submission to the Department of Buildings (DOB), Engineers of Record (EORs), and insurance carriers.
Proven Field Application: Trusted on major urban developments including 51 Jay Street (Brooklyn) and 136–140 W. 42nd Street (Manhattan).
Frequently Asked Questions
The primary driver is NYC Building Code Section BC 3309, which mandates adjoining property protection during construction or demolition. Projects adjacent to historic landmarks must also satisfy TPPN 10/88, while transit-adjacent sites adhere to MTA/NYCTA monitoring guidelines.
Engineers of Record (EORs) typically require sub-millimeter accuracy. Saltus deploys crack gauges and Automated Motorized Total Stations (AMTS) calibrated to 0.1 mm precision to catch minor structural shifts early.
While standard industry setup takes one to two weeks, Saltus can mobilize field teams within 24 hours in emergency situations to install compliant equipment and generate the data required by the DOB to lift a Stop Work Order.
Securing neighbor access is often a major project hurdle. Saltus acts as an independent third party, utilizing clean, minimally invasive installations that satisfy access agreements without adding friction to adjacent property owners.
Your team receives continuous 24/7 web dashboard access with automated SMS/email alerts for threshold breaches, alongside defensible weekly PDF reports formatted for DOB and engineering compliance.
Safeguard Your Adjoining Properties & Maintain Code Compliance
Have questions about NYC DOB requirements or need immediate monitoring setup for an upcoming project? Contact Saltus today to review site requirements or arrange emergency 24-hour field mobilization.