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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.)

geographic information system

system that incorporates all types of geographical data

geographic information system

it is a collective term that includes the process of capturing data, to storing, processing and analyzing, and presenting said data

time

4th dimension in geologic maps

aerial images and mapping

any photo taken by airplanes, drones, satellites, or similar items

georeferencing

assigning one pixel to one location (latitude and longitude)

remote sensing

detection (and observing/monitoring) of the physical characteristics of a place via measurement of its reflected and emitted radiation from a distance

structural engineer

Usually use handbooks or manufacturer's data book for parameters concerning material modelling

geotechnical engineer

uses site investigation to model the underlying strata

Geotechnical engineer

studies the materials underlying in the site

subsurface exploration

process of determining the layers of natural soil deposits that will underlie a proposed structure

subsurface exploration

includes physical properties which may influence the design and construction of a structure and its underlying foundation

subsurface exploration

done only on a fraction of the proposed site

sample soil profile

one of the main outputs of soil investigation

suitability


potential problems


effect of changes


ground water


design parameters


type of design solution

why do we need to conduct site investigation

suitability

appropriateness of site for proposed structure/construction

potential problems

expansive soils, liquefaction, containment of possible contaminants

effect of changes

how will design/construction/structure affect adjacent properties, ground water, and other items

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

design parameters

strength parameters, compressibility, and other geotechnical parameters

vibration


grouting


soil reinforcement


dewatering

type of design solution

desk study/ preliminary information


reconnaissance of site/ site visit


site Investigation & field tests


laboratory tests

subsurface exploration phases

national structural code of the Philippines 2015

borehole guideline

geophysical methods

measures certain physical properties or forces (density, elasticity, gravitational attraction) to determine the subsurface structure in an area

Seismic and Resistivity

geophysical method that is more applicable for horizontal changes

Magnetic and Gravitational

geophysical method generally used to delineate lateral changes/vertical structures

geophysical method

indirect site exploration

seismic methods

energy is generated by mechanical pounding on surface or detonation of explosive charge

p waves

most used seismic waves in seismic explorations

shot point

where disturbance originates in seismic refraction

detector array

array of geophones/detectors in seismic refraction

seismic refraction

usually done to locate bedrocks

seismic reflection

most extensively used in oil industry

resistivity methods

electric current is put into the ground using 2 current electrodes while the potential difference between 2 potential electrodes is observed