CEO Flashcards
__ of Building is the science of controlling the unwanted noise in the living environment.
Acoustic control
Acoustic properties of construction materials
Steel
Concrete
Fiber Glass
Rubber and Plastic
is considered as the best material for sound insulation.
Steel
The ___ is more rigid and has a high density.
concrete
___ it is a sound-insulating material. It has a sound absorption property.
Fiber Glass
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
___ of concrete is a method of using new concrete to repair damaged
concrete.
Conventional placement
___ should not be used when there is
an active threat of deterioration that caused the existing concrete to fail.
Replacement concrete
___ must be designed to withstand the forces and deformations that occur in and
adjacent to connections.
Precast members
Planning a concrete repair requires consideration of many factor, including the following:
▪ Application conditions
▪ Geometry
▪ Temperature
▪ Moisture
▪ Location
▪ Service conditions
▪ Downtime
▪ Traffic
▪ Chemical attack
▪ Appearance
▪ Service life
Planning a concrete repair requires consideration of many factor, including the following:
▪ Application conditions
▪ Geometry
▪ Temperature
▪ Moisture
▪ Location
▪ Service conditions
▪ Downtime
▪ Traffic
▪ Chemical attack
▪ Appearance
▪ Service life
Type of damage in concrete structures
Physical, Chemical, Biological, and Mechanical Factors
Physical factors include
Heat, changes in temperature, moisture, wind
___ also called high-rise, multistory building tall enough to require the use of a
system of mechanical vertical transportation such as elevators.
High-rise building
The ____ of high-rise buildings support very heavy loads, but the systems developed for
low-rise buildings are used, though enlarged in scale.
foundations
___ in its broadest sense is the alteration of any property of a soil or rock to
improve its engineering properties.
Ground Improvement
___ in its broadest sense is the alteration of any property of a soil or rock to
improve its engineering properties.
Ground Improvement
It is essential that in place soil should possess certain properties to withstand the load caused by
the structure.
Compaction
It is necessary to eliminate the seepage pressure to increase the shearing resistance or to reduce the danger of frost damage.
Drainage Method
__ is the technique applied on the ground to improve the subsoil condition by
applying temporary loading at the construction site.
Precompression
___ are used in any ground improvement techniques which could bring in
deformation and displacement resulting in densification.
Vibration methods
____ is effectively used in the densification of saturated cohesionless
soil.
vibro-compaction method
It is also called granular piles. Are installed mostly by vibration techniques.
Stone columns
it is a process of ground improvement which is attained by injecting fluid-like material into the
subsurface of soil or rock.
Grouting and injection
