Module 3 Flashcards
Enumerate the Human Needs and their corresponding specific nature of needs and civil engineering technical area.
- Breath
1.1 Clean Air
1.1.1 Environmental Engineering - Drink
2.1 Safe Water
2.1.1 Environmental Engineering - Sleep
3.1 Livable Shelter
3.1.1 Structural and Construction Engineering - Move Around
4.1 Ways to Travel
4.1.1 Transportation and Construction Engineering - Safe from Disaster
5.1 Earthquake Mitigation
5.1.1 Structural and Geotechnical Engineering
5.2 Flood Mitigation
5.2.1 Water Resources and Environmental Engineering
5.3 Wind Mitigation
5.3.1 Structural Engineering
5.4 Fire Mitigation
5.4.1 Structural Engineering
What is the corresponding Civil Engineering Technical Area for Clean Air?
Environmental Engineering
What is the corresponding Civil Engineering Technical Area for Safe Water?
Environmental Engineering
What is the corresponding Civil Engineering Technical Area for Livable Shelter?
Structural and Construction Engineering
What is the corresponding Civil Engineering Technical Area for Ways to Travel?
Transportation Engineering and Construction Engineering
What is the corresponding Civil Engineering Technical Area for Earthquake Mitigation?
Structural and Geotechnical Engineering
What is the corresponding Civil Engineering Technical Area for Flood Mitigation?
Water Resources and Environmental Engineering
What is the corresponding Civil Engineering Technical Area for Wind Mitigation?
Structural Engineering
What is the corresponding Civil Engineering Technical Area for Fire Mitigation?
Structural Engineering
It is a specialty that deals with the analysis and design of constructed structures.
Structural Engineering
From spacecraft to deep-sea submarines, from tiny micro-electro-mechanical system (MEMS) devices to long bridges and tall buildings. What area of civil engineering is this?
Structural Engineering
Fill in the blank. A structure is always subjected to many _____ environmental forces upon it.
loads
What do you call the omnipresent gravitational load of its own weight?
dead load
What do you call the weight of things moving about in or upon the structure?
live load
These are loads that originated from the occurrence of earthquakes, strong wind, or heavy snow.
event-driven loads
It aims at providing a structure with a sufficient level of resistance against these loads at minimum cost.
Structural Design
It is the collection of elements within construction that are assured, and designed, to support the loads applied to the structure and transmit them safely to the foundations.
Structure
Define structure.
It is the collection of elements within construction that are assured, and designed, to support the loads applied to the structure and transmit them safely to the foundations.
It acts as the skeleton of the building.
Frame
It transmits the load from where it is applied to those members that support the structure.
Floor slabs
In what direction do the floor slabs direct loads of the infrastructure?
perpendicular to the direction of the loading
Fill in the blank. The slabs have to transfer the load _____ to supporting beams, walls, or columns.
horizontally
It collects the load from one or more slabs and transmits it to the members supporting it.
Beam
True or False. Beams behave the same way as slabs but, because they concentrate the loads from slabs, they tend to carry much fewer load intensities.
False (fewer - higher)
It is a particular form of a beam that is made up of small individual units usually arranged to form triangulated structure.
Truss
Enumerate the different kinds of trusses.
- Burr arch
- Arch
- Long
- Paddleford
- Howe (Usual)
- Howe (Single)
- Howe (Western)
- Haupt
- Warren
- Pratt (Revised)
- Childs
- Brown
They collect the loads from beams and slabs and transmit them downward to the foundations.
Columns
They behave differently from the beams and slabs in that they mainly transmit loads in a direction parallel to the axis of the member.
Columns
They carry out the same function as columns, that is, they transmit loads downwards.
Structural Walls
In tall buildings, they serve an important function in stiffening a building against lateral loads (i.e wind).
Structural Walls
Architecturally, structural walls serve as _________ and _________.
divider of buildings into compartments and provider of an outer skin
True or False. Generally, walls are fairly heavy-loaded.
False (heavy - light)
It is a wall that supports soil.
retaining wall
True or False. A wall that supports soil (retaining wall) is similarlly behaving structurally more as a column than a wall.
False (column - slab)
Give three examples of footing.
- Simple Footing
- Sloped Footing
- Stepped Footing
They take loads from the columns and walls and transfer them to the underlying soil or rock.
Foundations
Why does the foundation generally have to spread the load over a sufficient area of the soil for the stresses in the soil to be limited to levels that will not cause excessive settlements?
Because the soil is normally much weaker than the materials forming the structure
It is a relatively rare form of a member, and it carries a load by tension.
tie
These are the members that carry only compression, particularly if they are elements in a truss.
struts
Fill in the blank. Slab transmits load horizontally to _______.
beam
Fill in the blank.Beam transmits load fro slab to _________.
columns
Fill in the blank. Colum transmits loads from beam to ___________.
foundations
Fill in the blank. Foundation spreads column load into the _____.
soil
Describe the hierarchy of members in a structure.
- Slab transmits the load horizontally to a beam.
- Beam transmits the load from the slab to the columns.
- Column transmits the load from the beam to the foundations.
- Foundation transmits the column load into the soil.
Fill in the blank. A column supporting a bridge is generally described as ______.
pier
Fill in the blank. A wall supporting the end of a bridge is called ______.
abutment
It is the methodology applying these mathematical tools to be load-resistance analysis in structural design.
Structural Reliability
It is used in the development of design codes and specifications that are followed by designers to provide acceptable levels of safety against all loads.
Structural Reliability
What is the principle aim of structural design?
It is the assurance of satisfactory performance within the constraints of the economy.
What is the primary complication toward achieving the principle aim of structural design in practice?
imperfect execution and the lack of complete information
Using probability theory as a tool, it provides a rational and consistent basis for determining the appropriate safety margins.
Reliability analysis
Its success is exhibited by the numerous reliability-based provisions developed in recent code revisions to achieve a target reliability range in the design of structural elements.
Reliability analysis
It is defined as the probabilistic measure of assurance of performance with respect to some prescribed condition(s).
Reliability
What condition are they referring to in the definition of Reliability?
ultimate limit state (collapse) or serviceability limit state (excessive deflection and/or vibration)
It refers to the collapse.
ultimate limit state
It refers to excessive deflection and/or vibration.
serviceability limit state
Performance against failure is ensured if?
R > S (supply exceeds demand)
The capacity of the particular bar cannot be known exactly unless it is ___________.
tested to failure
It gives an indication of the reliability of the bar.
proportion of bars with strength equal to or above S (assumed deterministic)
It indicates the probability of failure of the system.
the proportion (shaded region) of bars below S
Fill in the blank. Reliability can be viewed as a ______________.
complimentary to the probability of failure
True or False. An exposition of some basic probability concepts is a prerequisite to understanding the complexity and solutions of such problems.
True
It means the occurrence of uncontrolled, painful, and serious conditions.
Disaster
Enumerate the various natural disasters.
- Earthquakes
- Volcanic eruptions
- Cyclones
- Fire
- Landslides
- Tsunami
- Flood
They need special consideration in building design and construction since they are more frequent, widespread, and disastrous.
- Earthquakes
- Cyclone
- Fire
Why do earthquakes, cyclones, and fires need special consideration in building design and construction?
Since they are more frequent, widespread, and disastrous
It is a sudden, rapid shaking of the earth’s surface caused by the breaking and shifting of rocks beneath.
Earthquake
Fill in the blank. During an earthquake, ground motion occurs in a random fashion in all directions radiating from a point within the earth’s crust called _________.
epicenter
It causes vibrations in structures and induces inertia forces on them.
epicenter
True or False. Earthquakes do not kill people, vulnerable buildings do so.
True
Fill in the blank. The effects of earthquake ground motion create _________ and _________ that change violently within a short duration.
vertical and horizontal forces
Fill in the blank. The _________ and _________ of the earthquake-induced load require special design and analysis considerations.
time-varying nature and multi-directional nature
What is the fundamental approach in earthquake engineering?
To design a structure that will not inflict injury to human lives at a reasonable cost.
What are the two types of earthquakes?
- Natural earthquake
- Earthquakes due to induced activities
Natural earthquakes may be due to:
a. active faults
b. movement of tectonic plates
c. due to volcanic eruptions
True or False. The displacement of rocks along faults cause an earthquake.
True
It means a large-scale process affecting the structure of the earth’s crust.
Tectonic
This process causes gradual movement of material within the crust of the earth.
Tectonic
It is a mountain or hill having a crater through which lava, rock fragments, hot vapor, and gas are or have been erupted from the Earth’s crust.
Volcano
These are caused by vibrations induced by atomic explosions and the collapse of ground due to faulty mining.
Earthquakes due to induced activities