Desk Study and Preliminary Reconnaissance

Question 1

aims to foresee problems that may arise and
figure out possible ways to address them. Always a prerequisite for design
of engineering projects

Answer 1

site investigation

Question 2

aims to identify problems that may arise in relation to the geology of a
site and the proposed structure, as well as possible solutions

Answer 2

geological investigation

Question 3

data needed in geological investigation

Answer 3

soil and rock underlying the site
stratigraphy and structures
groundwater and mobility
extent of weathering
hazards

Question 4

3 general phases of geological investigation

Answer 4

Desk study, preliminary reconnaissance, site exploration

Question 5

Aims to gather and study all available literature and data related to the site

Answer 5

desk study

Question 6

maps that show the geology of an area including data related to the rock units and distribution in the area, geologic structures, age
relationships of the rocks, as well as cross
section view of the map.

Answer 6

geologic maps (Mines and Geosciences Bureau)

Question 7

Map of surface geology – shows data about material occurring at
ground surface including alluvium, mud, and other materials

Answer 7

drift edition geologic map

Question 8

Map with no drift shown (like looking at ground if drift material are removed), only the SOLID geology underneath

Answer 8

solid edition geologic map

Question 9

shows the relative ages of strata in a map and is usually found at the margin of the map

Answer 9

stratigraphic column

Question 10

Scientific process to map geologic features in the area concerned and
create maps of it.

Answer 10

geologic mapping

Question 11

Technology that allows easier management of spatial data.

Answer 11

GIS Geographic Information System

Question 12

Allows determination of
precise location

Answer 12

GNSS Global Navigation Satellite System

Question 13

Uses aircraft or satellites to measure
reflected and emitted radiation to
monitor physical characteristics of an
area or structures in an area.

Answer 13

remote sensing

Question 14

uses emitted electromagnetic radiation
related to temperature of objects

Answer 14

IRLS Infrared Linscan

Question 15

Pulses of energy are shot from
an aircraft, bounces off the ground, and is received by the aircraft again. This allows creation of photographs from recorded data. One of its advantages is that it is not affected by cloud cover

Answer 15

SLAR Side-looking airborne radar

Question 16

uses laser in determining the distance or range of an object by computing the time for it to return

Answer 16

LiDAR Light detecting and ranging

Question 17

can be used with a stereoscope to make a 3D ground surface model, which can then be used to make topographic maps.

Answer 17

aerial images

Question 18

shows mainly the elevation data related to
the map. It uses contour lines to show which
areas are at the same altitude/elevation and
thus allows for visualization of flat areas vs
slope areas and how steep slopes are

Answer 18

Topographic Map (National Mapping and Resource Information Authority- NAMRIA)

Question 19

show data and distribution of soil in an area

Answer 19

soil maps (Bureau of Soils and Water Management - BSWM)

Question 20

shows the site’s susceptibility to
various hazards like earthquake or
liquefaction

Answer 20

hazard maps (HazardHunter PH)

Question 21

based on the expected structure, one can estimate how much load will be transferred to the ground

Answer 21

possible loads

Question 22

certain important structures have stricter rules in design and construction

Answer 22

importance

Question 23

some structures can have deformation
like settlement of floor while some like factories that require precision (due to machine connections to each other) may have more stringent design considerations related to deformations.

Answer 23

tolerance to deformation

Question 24

done to supplement the desk study and give a better report.
During this, a lot of information is noted related to the site as it is like soil
and rocks observed, vegetation, slopes, evidence of possible problems like
cracks on the ground or rocks, etc.

Answer 24

preliminary reconnaissance