Crack monitoring has been around since the ancient Romans began constructing primitive structures over 2 stories. Crack monitoring allows Structural Engineers to determine if a structure is in imminent failure or if the structure is able to be determined as ‘stable’. The Big Apple Group has many methods of monitoring cracks, with the less ‘obvious’ crack monitoring by a micrometer and photographic evidence to the installation of manual crack gauges to advanced automated and “real-time” systems that give feedback 24/7 for sensitive crack monitoring
Crack monitoring is an essential item to determine stability of any critical structure, and a way to document if the structure has been impacted at all since the formation of the crack.
“Telltales” also known a crack monitoring gauge are installed and monitored on any open joints in the permanent structures on neighboring properties in locations specified by client and the engineer on record (EOR). The gauges are clear plastic that measure 1-inch tall by 6-inches long and come in two halves. The two halves are secured using epoxy glue or a direct fastener on opposite sides of an existing crack. The halves overlap such that they can detect relative movements that are measured to the nearest 1 mm on a graduated scale. Monitoring crack widths in concrete buildings, bridges, and roads is easy and reliable with Concrete Crack Monitors. Opening and closing and differential movement of the crack is continuously monitored.