2.1.A Answer the following questions with regard to the reinforced concrete beam in FIGURE 2.1 - NSC Civil Technology Woodworking - Question 2 - 2017 - Paper 1
Question 2
2.1.A Answer the following questions with regard to the reinforced concrete beam in FIGURE 2.1.
2.1.1 What is bar 2.1.A called?
2.1.2 What is the purpose of bar 2.... show full transcript
Worked Solution & Example Answer:2.1.A Answer the following questions with regard to the reinforced concrete beam in FIGURE 2.1 - NSC Civil Technology Woodworking - Question 2 - 2017 - Paper 1
Step 1
What is bar 2.1.A called?
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Answer
Bar 2.1.A is called the main bar.
Step 2
What is the purpose of bar 2.1.A?
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Answer
The purpose of bar 2.1.A is to withstand tensile stress or shear stress over shear line.
Step 3
From which type of steel is bar 2.1.A manufactured?
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Bar 2.1.A is manufactured from high tensile steel.
Step 4
What is the sectional size of bar 2.1.A?
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The sectional size of bar 2.1.A is 16 mm.
Step 5
What are the bars at 2.1.B called?
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The bars at 2.1.B are called stirrups.
Step 6
Name TWO purposes of the bars at 2.1.B.
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To withstand shear stress.
To bind main bars.
Step 7
Describe TWO requirements with which the steel for steel reinforcement must comply.
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The steel must be capable of resisting tensile stress without significant strain.
The surface must bond adequately with concrete.
Step 8
Briefly describe the purpose of efficient concrete covering for reinforced concrete.
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The purpose of efficient concrete covering for reinforced concrete is to prevent damp from penetrating to the reinforcement, thereby avoiding rust that can weaken the structure.
Step 9
Briefly describe the difference between the type of bricks which are used for a rough arch and bricks that are used for a gauged arch.
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Rough arch bricks are typically standard bricks, whereas gauged arch bricks are often wedge-shaped to fit more precisely into arches.
Step 10
Briefly motivate why a clearance of 2 mm must be around the glass when it is fixed to a frame.
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A clearance of 2 mm around the glass is necessary to allow for expansion and contraction of the glass, preventing breakage due to temperature changes.
Step 11
Name THREE safety rules to be observed when working on floors and stairs with open sides.
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Ensure sufficient lighting in the work area.
Keep the area free from material, waste, and obstacles.
Use sufficient trap platforms or nets to catch falling objects.
