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RISIn Situ Change Analysis and Monitoring through Terrestrial Laser Scanning
Publisher: American Society of Civil Engineers
Abstract: In addition to inherent degradation with time, geologic hazards such as coastal erosion, landslides, and seismic activity constantly threaten public infrastructure. Repeat surveys using terrestrial laser scanning [TLS, ...
Linking Surveying, Engineering, GIS, and Computer Science into Geomatics through a Digital Terrain Modeling Course
Publisher: American Society of Civil Engineers
To Level or Not to Level: Laser Scanner Inclination Sensor Stability and Application
Publisher: American Society of Civil Engineers
Abstract: Many modern terrestrial laser scanners (TLSs) are equipped with inclination/tilt sensors—also referred to as level compensators—that can correct out-of-level imperfections in an instrument setup. Some users elect to disable ...
Virtual ADA Compliance Assessment: Mimicking Digital Inclinometers to Measure Slopes within Point Clouds
Publisher: American Society of Civil Engineers
Abstract: The Americans with Disabilities Act (ADA) requires that the design, construction, and maintenance of curb ramps provide accessibility to persons with disabilities. Light detection and ranging (lidar) can efficiently collect ...
Alternative Information Signs: Evaluation of Driver Comprehension and Visual Attention
Publisher: American Society of Civil Engineers
Abstract: The effectiveness of a traffic sign is collectively influenced by the sign’s understandability, legibility distance, glance legibility, and learnability; however, understandability has been repeatedly identified as one of ...
Alternative Information Signs: Evaluation of Driver Comprehension and Visual Attention
Publisher: American Society of Civil Engineers
Abstract: The effectiveness of a traffic sign is collectively influenced by the sign’s understandability, legibility distance, glance legibility, and learnability; however, understandability has been repeatedly identified as one of ...
Multihazard Damage and Loss Assessment of Bridges in a Highway Network Subjected to Earthquake and Tsunami Hazards
Publisher: ASCE
Abstract: The objective of this study is to examine and compare the vulnerabilities of highway bridges to the combined effects of earthquake shaking, ground failure, and tsunami loading. Earthquake-induced ground shaking, ground ...
Instance-Based Clustering of Road Markings with Wear and Occlusion from Mobile Lidar Data
Publisher: American Society of Civil Engineers
Abstract: Road markings are essential features to convey important information to various roadway users such as pedestrians, bicyclists, and motorists. Although mobile laser scanning (MLS) technology provides dense and spatially ...
Analysis of the Multipass Approach for Collection and Processing of Mobile Laser Scan Data
Publisher: American Society of Civil Engineers
Abstract: The standard method in surveying practice for adjusting mobile terrestrial laser scan (MTLS) data to correct for global navigation satellite system (GNSS) positioning errors consists of placing a detailed network of surveyed ...
Tsunami Modeling, Fluid Load Simulation, and Validation Using Geospatial Field Data
Publisher: American Society of Civil Engineers
Abstract: This paper presents an integrated, interdisciplinary methodology incorporating multiphysics, multiscale numerical modeling and simulation from tsunami generation, propagation, and inundation to subsequent coupled structural ...