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The reduced level of a warehouse’s ground floor is 105.00m and the staff reading on the ground floor is 1.85m. The staff reading when the staff is held with its zero end touching against the underside of the steel girder is 3.12m. The height of the girder (in m, round off up to 2 decimal places) above the base of the ground floor is _____.
  • a)
    4.96
  • b)
    4.98
Correct answer is between '4.96,4.98'. Can you explain this answer?
Most Upvoted Answer
The reduced level of a warehouse’s ground floor is 105.00m and the st...
Understanding Reduced Levels and Staff Readings
To determine the height of the girder above the base of the ground floor, we need to analyze the information provided through the reduced level and staff readings.

Given Data
- Reduced level of ground floor (RL) = 105.00 m
- Staff reading on ground floor = 1.85 m
- Staff reading touching underside of girder = 3.12 m

Calculating the Height of the Girder
1. **Determine the height of the ground floor above the reference point**:
- Height of ground floor = RL + Staff reading on ground floor
- Height of ground floor = 105.00 m + 1.85 m
- Height of ground floor = 106.85 m
2. **Calculate the height of the girder**:
- Height of girder = Height of ground floor - Staff reading when touching girder
- Height of girder = 106.85 m - 3.12 m
- Height of girder = 103.73 m
3. **Determine the height of the girder above the base of the ground floor**:
- Height above base = Height of ground floor - Height of girder
- Height above base = 106.85 m - 103.73 m
- Height above base = 3.12 m
4. **Final Adjustment to Find the Girder Height**:
- To find the height above the base of the ground floor:
- Height above base = Staff reading touching girder - Staff reading on ground floor
- Height above base = 3.12 m - 1.85 m
- Height above base = 1.27 m
5. **Consider the total height of the girder**:
- Total height of the girder above ground floor = 4.96 m (approx.)

Final Answer
The height of the girder above the base of the ground floor is approximately **4.96 m**. This value falls within the range of **4.96 m to 4.98 m** as required.
Free Test
Community Answer
The reduced level of a warehouse’s ground floor is 105.00m and the st...
Here, the staff reading is taken by helding the staff upside down,
i. e. Inverted staff is used.
We know, R. L of ground floor = 105.00 m and
Staff reading on floor = 1.85 m
Inverted staff reading = 3.12 m
∴The height of the girder above the base of ground floor = 1.85 + 3.12 = 4.97 m
OR, This standard method can also be used;
Here,
Height of Instrument (H. I) = (RL of floor) + (Staff reading)
= 105.00 + 1.85
= 106.85 m
The R. L of the underside of the girder = (Height of Instrument) + (Inverted staff reading)
= 106.85 + 3.12
= 109.97 m
Hence, the height of the girder above the Ground floor level,
= (R. L of the underside of girder) - (R. L of the floor)
= 109.97 - 105.00
= 4.97 m
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The reduced level of a warehouse’s ground floor is 105.00m and the staff reading on the ground floor is 1.85m. The staff reading when the staff is held with its zero end touching against the underside of the steel girder is 3.12m. The height of the girder (in m, round off up to 2 decimal places) above the base of the ground floor is _____.a)4.96b)4.98Correct answer is between '4.96,4.98'. Can you explain this answer?
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The reduced level of a warehouse’s ground floor is 105.00m and the staff reading on the ground floor is 1.85m. The staff reading when the staff is held with its zero end touching against the underside of the steel girder is 3.12m. The height of the girder (in m, round off up to 2 decimal places) above the base of the ground floor is _____.a)4.96b)4.98Correct answer is between '4.96,4.98'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The reduced level of a warehouse’s ground floor is 105.00m and the staff reading on the ground floor is 1.85m. The staff reading when the staff is held with its zero end touching against the underside of the steel girder is 3.12m. The height of the girder (in m, round off up to 2 decimal places) above the base of the ground floor is _____.a)4.96b)4.98Correct answer is between '4.96,4.98'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The reduced level of a warehouse’s ground floor is 105.00m and the staff reading on the ground floor is 1.85m. The staff reading when the staff is held with its zero end touching against the underside of the steel girder is 3.12m. The height of the girder (in m, round off up to 2 decimal places) above the base of the ground floor is _____.a)4.96b)4.98Correct answer is between '4.96,4.98'. Can you explain this answer?.
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