CEO Exam Flashcards
Controlling the unwanted noise in the living environment.
Acoustic of buildings
What are the four acoustic properties of construction materials?
Steel
Concrete
Fiberglass
Rubber and plastic
Enumerate the eight construction techniques for noise control in buildings
- Construction of walls
- Use of cavity walls in the partition
- By increasing thickness and mass of the wall
- Use of acoustic blankets in airspace
- Use of different panels
- Construction in size of windows
- Increasing thickness of the glass
- Installation of double glazed windows
Why is good acoustic control of building necessary?
To live peaceful and quality life
What are the two site selections and planning for better acoustic control in the structures?
Maintaining distance from the source of noise
Building orientation
It is the best material for sound installation It has a high density which makes it noise resistant.
Steel
It is sound insulating material
Fiberglass
It is more rigid and has a high density
Concrete
It also known as _____ _____.It increases sound attenuation when placed in the air space. It can attenuate noise up to _____
Isolation blanket and 10dB
Explain conventional placement
A method of using your concrete to repair damaged concrete the repair must be able to make an integral band with the base concrete. A low which and a high percentage of course aggregate is needed in the repair concrete to minimize shrinkage cracking.
Crack repair with the use of external prestressing strands or bars apply a ________
Compressive force
What are factors that require consideration of planning a concrete repair?
Application condition
geometry
Temperature
Moisture
Location
service condition
Service life
Chemical attack
traffic
down time
appearance
What are the types of causes and mechanism of confit damage
Chemical
mechanical
biological
physical factors
What type of damage in concrete structure is the heat changes in temperature moisture wind and etc?
Physical factors
What is planning and design of concrete repair?
It is a process of figuring out how to fix damaged concrete, choosing the right materials, and deciding the best method to make the repair last.
Cement paste, sulfate attack and reinforcing steel. What type of factors that cause concrete damage?
Chemical factors
Multi-story building tall enough to require the use of a system of mechanical vertical transportation such as elevators.
High-rise building
What country did the first high-rise building were constructed?
United States in the 1880’s
The use of steel structural frames and glass exterior sheathing.
High-rise building
Vertical transport in a high rise is the elevator.
Principal
The _________ of high rise building supports very heavy loads.
Foundation
The _________ of high rise building supports very heavy loads.
Foundation
Tall buildings are similar to those of low rise building
Plumbing systems
High-rise building are also very similar to low rise systems
Electrical systems
