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Answer:
To compute the number of CHB (Concrete Hollow Blocks) and Reinforced Steel Bars (RSB) needed for the given scenario, we will follow these steps:
Given:
- Wall height: 1.1 meters from the ground
- Wall length: 3 meters
- CHB height: 4 inches (equivalent to 10.16 cm)
- 2 layers of CHB will be buried on the ground
- Vertical RSB spacing: 60 cm
- Horizontal RSB to be placed after every 3 layers of CHB
- Each RSB is 6 meters in length
Let's calculate the number of CHB needed first:
1. Calculate the total height of the wall including the buried CHB:
Total wall height = Wall height + 2 * CHB height
Total wall height = 1.1 meters + 2 * 10.16 cm = 1.1 meters + 20.32 cm = 1.1 meters + 0.2032 meters = 1.3032 meters
2. Calculate the number of CHB layers:
Number of CHB layers = Total wall height / CHB height
Number of CHB layers = 1.3032 meters / 0.18 meters = 7.239 (round up to 8 layers for safety)
3. Calculate the total number of CHB needed:
Total CHB needed = Wall length * Number of CHB layers
Total CHB needed = 3 meters * 8 layers = 24 CHB
Next, let's calculate the number of RSB needed:
4. Calculate the number of horizontal RSB needed:
Number of horizontal RSB = Number of CHB layers / 3 (placed after every 3 layers)
Number of horizontal RSB = 8 layers / 3 ≈ 2.67 (round up to 3 bars for safety)
5. Calculate the number of vertical RSB needed:
Number of vertical RSB = Wall length / Vertical RSB spacing
Number of vertical RSB = 3 meters / 0.6 meters = 5 bars
Therefore, for the given scenario, you would need:
- 24 Concrete Hollow Blocks (CHB)
- 3 Horizontal Reinforced Steel Bars (RSB)
- 5 Vertical Reinforced Steel Bars (RSB)
Explanation:
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