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A reinforced concrete slab is 75 mm thick. The maximum size of reinforced bar that can be used is of
- a)12 mm diameter
- b)10 mm diameter
- c)8 mm diameter
- d)6 mm diameter
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A reinforced concrete slab is 75 mm thick. The maximum size of reinfor...
As per IS 456 2000.
Max diameter of bar is 1/8*slab thickness.
So 75/8 = 9.4 mm.
So 8 mm diameter use.
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A reinforced concrete slab is 75 mm thick. The maximum size of reinfor...
Reinforced Concrete Slab and Maximum Size of Reinforced Bar
Reinforced concrete slabs are widely used in the construction industry for floors, roofs, and bridges. They are made by pouring concrete over a reinforcing steel mesh or bars to provide additional strength and durability. The maximum size of the reinforced bar that can be used in a concrete slab depends on various factors such as slab thickness, concrete mix design, and design requirements.
Given that the concrete slab is 75 mm thick, the maximum size of the reinforced bar that can be used is 8 mm diameter. This is because of the following reasons:
- ACI 318-14, the American Concrete Institute's design standard, limits the maximum size of bars that can be used in concrete to 1/8th of the thickness of the concrete member. In this case, the concrete slab is 75 mm thick, so the maximum bar size is 75/8 = 9.375 mm.
- However, the next smaller bar size available in the market is 8 mm diameter, which is why it is the maximum size that can be used in this case.
It is important to note that using larger bar sizes than what is recommended can lead to cracking and other issues in the concrete, while using smaller bar sizes can compromise the strength and durability of the reinforced concrete slab. Therefore, it is crucial to follow the design standards and guidelines to ensure the quality and safety of the construction project.
Reinforced concrete slabs are widely used in the construction industry for floors, roofs, and bridges. They are made by pouring concrete over a reinforcing steel mesh or bars to provide additional strength and durability. The maximum size of the reinforced bar that can be used in a concrete slab depends on various factors such as slab thickness, concrete mix design, and design requirements.
Given that the concrete slab is 75 mm thick, the maximum size of the reinforced bar that can be used is 8 mm diameter. This is because of the following reasons:
- ACI 318-14, the American Concrete Institute's design standard, limits the maximum size of bars that can be used in concrete to 1/8th of the thickness of the concrete member. In this case, the concrete slab is 75 mm thick, so the maximum bar size is 75/8 = 9.375 mm.
- However, the next smaller bar size available in the market is 8 mm diameter, which is why it is the maximum size that can be used in this case.
It is important to note that using larger bar sizes than what is recommended can lead to cracking and other issues in the concrete, while using smaller bar sizes can compromise the strength and durability of the reinforced concrete slab. Therefore, it is crucial to follow the design standards and guidelines to ensure the quality and safety of the construction project.
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Community Answer
A reinforced concrete slab is 75 mm thick. The maximum size of reinfor...
As per IS 456: 2000, Clause 26.5.2.2,
Maximum Diameter:
The diameter of the reinforcing bar shall not exceed one-eighth of the total thickness of the slab.
The diameter of the reinforcing bar shall not exceed one-eighth of the total thickness of the slab.
Minimum Reinforcement:
The mild steel reinforcement in either direction in slabs shall not be less than 0.15 percent of the total cross-sectional area.
The mild steel reinforcement in either direction in slabs shall not be less than 0.15 percent of the total cross-sectional area.
For high-strength deformed bars, the above value can be reduced to 0.12 percent.
Calculations:
So, the diameter of the bars to be used should not be greater than 8 mm.
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A reinforced concrete slab is 75 mm thick. The maximum size of reinforced bar that can be used is ofa)12 mm diameterb)10 mm diameterc)8 mm diameterd)6 mm diameterCorrect answer is option 'C'. Can you explain this answer?
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