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WorksheetsWeek 4 - Reinforcement
Total questions: 13
Worksheet time: 7mins
_______________________ is strong in compression but weak in tension.
This sentence refer to?
Steel
Concrete
Reinforcement
Brick
The combination of steel and concrete are used to take up the stress and are known as reinforced concrete.
The statement above is 'True' or 'False'?
TRUE
FALSE
The reinforcing steel absorbs the tensile, shear, and sometimes the compressive stresses in a concrete structure.
The statement above is TRUE or FALSE?
TRUE
FALSE
Reinforcement are referred to the materials below except:
steel bars
welded wire fabric
plastic
strands
Fresh concrete can be moulded into almost any shape, giving it an inherent advantage over other materials as long as reinforcement is install.
The statement is TRUE or FALSE
TRUE
FALSE
What is the function of the concrete sleeper?
As the accessories of the slab
To hold and make sure the reinforcement bar at the right position before concreting
To allow space for services underneath the reinforcement bar
Just a concrete cube with no significant
This type of reinforcement suitable for:
Column
Beam
Slab
Wall
Pictures above show the reinforcement steel in concrete column. Which of the statement below is referring to the those two pictures?
Both pictures consist of binder and vertical bars.
Both of the pictures shows the conventional ties reinforcement.
Both of the pictures shows the spiral reinforcement method.
Horizontal reinforcing bars increase the column’s load carrying capacity and resist bending forces generated by lateral forces on the building structure or by connected beams.
Cover to reinforcement is the shortest distance between the surface of a concrete member and the nearest surface of the reinforcing steel.
Which of the statement below is wrong?
- The concrete cover must have a minimum thickness for three main reasons:
to give reinforcing bars sufficient embedding to enable them to be stressed without slipping
to wrap around the vertical bars to resist outward buckling of the bars
to protect the steel bars from environmental effects to prevent their corrosion
to provide thermal insulation, which protects the reinforcement bars from fire, and
What is the recommended size of rebar for construction of walls, piers or columns?
max 6mm
8mm and above
below 8mm
fix 6mm
Why do we need to tie rebars together prior to the pour of concrete using binders or link?
Below are the correct answers except:
To prevent the reinforcement bars from moving around when the concrete flows over/past them, to ensure they’re placed as the structural engineer wanted
To make sure the ribs on the properly tied rebars will bind against each other (rib against rib) and prevent any sliding of the bars during tension loads
To tie the rebar together ensure and to make sure there are proper spacing between them, (reinforcement serve different structural purpose according to the place it is in the concrete )
To ensure the spacing between the bars is consistent, the laps between 2 lengths long enough and that the bars are running perpendicular to each other so you have strength in both axis
To gift less bonding impact and release the stress of binder rather than permanent fixing at each member
This beam shows the failure mode of _______________:
Under reinforced
- the steel yields and failure will occur due to crushing of concrete. Beam will deflect and severe cracking occurs, thus provide warning sign before failure.
Over reinforced
- the steel does not yield and failure is due to crushing of concrete. There is no sign and cause sudden, catastrophic collapse.
Do you understand about the reinforcement topic?
Yes, I understand clearly.
No, I don't understand at all.
I'm still confuse and need extra class.
I understand but need to do revision on my own.
