Monitoring & Instrumentation

Hirani Engineering implements numerous cutting edge instrumentation technologies to provide clients with monitoring and instrumentation for collecting data on-site or remotely during construction activities.

We provide the following monitoring services in accordance with the NYC Building Code including compliance with Technical Policy and Procedure Notice # 10/88 for historical buildings:

Condition Survey: Hirani will perform a survey of the site including the adjacent structures in order to document baseline conditions prior to construction. We carefully photograph and survey the structures making it easy to compare the baseline conditions with conditions during or after construction.

Monitoring Plan: In accordance with NYC Building Code 3309.16, Hirani will provide an Engineer to develop a site and structure specific monitoring plan consisting of the scope and frequency of monitoring acceptable tolerances and reporting criteria and a drawing noting the location of all crack and vibration monitors.

Optical Monitoring: Hirani provides New York State licensed union surveyors to install optical monitors on buildings adjacent to the construction to monitor vertical and lateral displacement. A field report documenting displacement will be submitted for each visit.

Vibration Monitoring: Hirani provides seismographs to monitor vibrations around the clock at the job site. A text or e-mail is automatically sent to the contractor when the pre-determined threshold is exceeded. In addition, waveform recordings of the vibrations can also be provided. Weekly reports including the highest vibration reading reached for each day are prepared however, reports can be tailored to your need.

Crack Monitoring: The pre-construction condition survey establishes which visible cracks are to be monitored. Hirani inspectors read the crack gauges that have been affixed to the cracks, and report movement readings in millimeters along with a photographic documentation report for each gauge.