Brief descriptions of our capabilities in the areas listed above are provided in the following paragraphs. More detailed discussions of individual topics can be accessed by clicking on the links provided.
D’Appolonia provides consulting services related to the evaluation of earthquakes and earthquake engineering including:
- Seismic hazard assessments
- Surface faulting
- Soil and rock dynamics
- Soil-structure interaction
- Earthquake resistant design
For more than three decades D’Appolonia has evaluated earthquake hazards and provided earthquake engineering services on projects throughout the United States, in Europe and in Latin America for industries, government organizations, contractors, A/E firms, and commercial enterprises. Most of these studies have related to seismic design of major engineering projects, including power plants, dams, offshore structures and pipelines. In terms of one class of facility alone - fixed offshore structures - D'Appolonia has evaluated seismic design criteria for more than 40 sites around the world.
Blasting Plans/Blast and Vibration Monitoring
D’Appolonia has been involved with many construction projects where rock excavation is required to achieve desired site elevations or to stabilize a slope. These projects typically involve geologic site characterizations and rock mechanics studies to identify suitable techniques for excavation. We are experienced in the preparation of blasting plans for removal of rock and in monitoring the effects of blasting using seismograph instrumentation. We have also used this instrumentation for monitoring vibrations associated with the operation of industrial machinery.
Remote Sensing Analysis
Remote sensing is the collection of data through aerial-mounted or satellite instrumentation. There are two basic types of remote sensors: passive and active. Passive sensors are the most common and generally record reflected light or radiation from the target. Parameters sensed include the visible light spectrum, infrared light, radiation, and temperature. An example of active sensing is LIDAR, which involves transmission of radar waves and measurement of the reflection from the target. Remote sensing has many applications. Included among these are classification of surface cover and land use, evaluation of vegetation/tree canopy health, agricultural practices, and water quality. These data are typically input to GIS software and used for purposes such as estimating land use changes/urbanization, evaluating coastal shoreline changes, identifying the presence of contaminants in water bodies, and managing natural resources. D'Appolonia is experienced in the interpretation of aerial and satellite data for such uses.
RETURN TO TOP OF PAGE