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34 Cards in this Set
- Front
- Back
geological maps |
shows distribution of rock types and surficial deposits and geological structures (faults, etc.) |
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geographic information system |
system that incorporates all types of geographical data |
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geographic information system |
it is a collective term that includes the process of capturing data, to storing, processing and analyzing, and presenting said data |
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time |
4th dimension in geologic maps |
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aerial images and mapping |
any photo taken by airplanes, drones, satellites, or similar items |
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georeferencing |
assigning one pixel to one location (latitude and longitude) |
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remote sensing |
detection (and observing/monitoring) of the physical characteristics of a place via measurement of its reflected and emitted radiation from a distance |
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structural engineer |
Usually use handbooks or manufacturer's data book for parameters concerning material modelling |
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geotechnical engineer |
uses site investigation to model the underlying strata |
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Geotechnical engineer |
studies the materials underlying in the site |
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subsurface exploration |
process of determining the layers of natural soil deposits that will underlie a proposed structure |
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subsurface exploration |
includes physical properties which may influence the design and construction of a structure and its underlying foundation |
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subsurface exploration |
done only on a fraction of the proposed site |
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sample soil profile |
one of the main outputs of soil investigation |
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suitability potential problems effect of changes ground water design parameters type of design solution |
why do we need to conduct site investigation |
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suitability |
appropriateness of site for proposed structure/construction |
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potential problems |
expansive soils, liquefaction, containment of possible contaminants |
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effect of changes |
how will design/construction/structure affect adjacent properties, ground water, and other items |
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groundwater |
establishment of water table is essential in design as this is a load/force needed to be counteracted and can weaken over-all capacity of a site |
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design parameters |
strength parameters, compressibility, and other geotechnical parameters |
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vibration grouting soil reinforcement dewatering |
type of design solution |
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desk study/ preliminary information reconnaissance of site/ site visit site Investigation & field tests laboratory tests |
subsurface exploration phases |
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national structural code of the Philippines 2015 |
borehole guideline |
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geophysical methods |
measures certain physical properties or forces (density, elasticity, gravitational attraction) to determine the subsurface structure in an area |
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Seismic and Resistivity |
geophysical method that is more applicable for horizontal changes |
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Magnetic and Gravitational |
geophysical method generally used to delineate lateral changes/vertical structures |
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geophysical method |
indirect site exploration |
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seismic methods |
energy is generated by mechanical pounding on surface or detonation of explosive charge |
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p waves |
most used seismic waves in seismic explorations |
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shot point |
where disturbance originates in seismic refraction |
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detector array |
array of geophones/detectors in seismic refraction |
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seismic refraction |
usually done to locate bedrocks |
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seismic reflection |
most extensively used in oil industry |
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resistivity methods |
electric current is put into the ground using 2 current electrodes while the potential difference between 2 potential electrodes is observed |