WorksheetsDay 47-Nov 7PWD-Tall building,slip form,precast,failure,CM intro
Total questions: 15
Worksheet time: 10mins
Tall buildings must primarily resist—
Floor vibration
Soil heave
Wind and earthquake forces
Noise
In a framed structure, walls act mainly as—
Load-bearing members
Partition walls
Lateral resisting core
Foundation support
Slip-form construction becomes unsafe when forms are lifted too rapidly because—
Concrete sets faster
Weight reduces
Concrete may bulge at the bottom
none
Which jack provides more uniform upward movement in slip-form work?
Pneumatic jack
Screw jack
Hydraulic jack
Rack jack
Which is NOT listed as a cause of foundation failure?
Moisture withdrawal
Lateral pressure
Atmospheric action
Use of RCC frame
Forms used in precast construction can be reused many times.
True
False
Slip-form construction is ideal for small horizontal structural components.
True
False
Assertion (A): Damping systems are required in tall buildings. Reason (R): They help reduce wind-induced and seismic vibrations.
Both A and R true; R explains A
Both A and R true; R does not explain A
A true; R false
A false; R true
Cladding consists of thin sheets used to ________ the structural frame.
Isolate
Enclose
Stiffen
none
Statement 1-In earthquake-resistant design, buildings with irregular mass and stiffness distribution attract more seismic forces due to increased torsional effects during ground motion.
Statement 2-Retrofitting improves structural performance mainly by increasing the building’s ability to absorb and dissipate energy, which is a direct enhancement of its ductility.
Both 1&2 are true
Both 1&2 are false
only 1 true
only 2 true
A tall building is supported by a (a) , which carries floor and roof loads through columns to the foundation.
Arrange the slip-form operations in correct sequence:
1. Slip-form assembly on base
2. Concrete filled
3. Concrete gains rigidity
4. Forms begin to lift
(a)
Masonry with lime mortar should not be raised more than ————-m per day.
(a)
In the Bar Chart Method, which of the following is a major limitation that makes it unsuitable for large projects?
It requires high technical skills to draw
Start and finish times cannot be represented
Interrelationship between activities cannot be represented
It cannot show duration of activities
In a network diagram, an activity is represented by an arrow and must always begin and end with an (a) .
