Strain gauges are used to measure small changes in length of a structure (e.g. a steel prop or a concrete pile) during loading. These strains can be converted into load if the modulus of the material is known.
Surface mounted strain gauge with independent temperature measurement for monitoring loads in props.
Embedment strain gauge for use in a concrete pile.
If the strains are large you might need a crack gauge because it can tolerate larger displacements. Elastisense DS Series sensors can measure displacement while tolerating unpredictable movements, since the core sensing element is made of rubber and thus deformable in all directions. They are perfectly finished for outdoor applications and can endure all sorts of weather-related conditions, including heavy rain, UV light, wind, extreme heat and extreme cold. IDEAL FOR STRUCTURAL HEALTH MONITORING.