Terrestrial Laser Scanning in Engineering Survey: Analysis and Application Examples

Terrestrial laser scanning broadens its application areas in civil engineering, and claims even more attention in engineering survey. The paper shows the results of a laboratory test of a laser scanner. The laboratory test involved complex 3D accuracy analysis, reflectivity investigation of different colors and materials used at construction sites and observation of reflection angles. Instead of focusing on a particular laser scanner, the accuracy analysis put the emphasis on the evaluation procedure that enables the calibration and validation of different laser scanners. The paper also discusses the application of laser scanning through examples of load test measurements of bridges. The authors have been involved in 4 bridge load test measurements; the modeling and evaluation techniques, the emerging challenges and results will be presented. Besides presenting the measurement techniques and results of the load test measurements, analyzing the effect of temperature on steel bridge is also presented in the paper.