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The reading taken from an instrument station on a benchmark of RL 100.00 is 1.4 and on a chejja reading taken with inverted staff is 2.8 m. Then RL of chejja is
- a)104.2 m
- b)101.40 m
- c)98.6 m
- d)none of the above
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
The reading taken from an instrument station on a benchmark of RL 100....
height of instrument is, HI=BM+BSHI=BM+BS
HI=100.00+1.40=101.40mHI=100.00+1.40=101.40m
The staff is inverted to take reading on the chejja.
RL of chejja, RL=HI−InvertedreadingRL=HI−Invertedreading
=101.40−(−2.80)=104.20
Most Upvoted Answer
The reading taken from an instrument station on a benchmark of RL 100....
First, let's understand the given information:
- The reading taken from an instrument station on a benchmark of RL 100.00 is 1.4.
- The reading taken with an inverted staff (chejja) is 2.8 m.
Now, let's calculate the RL of the chejja.
1. Determine the Height of Instrument (HI):
The Height of Instrument (HI) is the elevation of the line of sight of the instrument above the benchmark. It is calculated by adding the instrument reading (1.4) to the benchmark elevation (RL 100.00).
HI = RL of benchmark + Instrument reading
HI = 100.00 + 1.4
HI = 101.40
2. Calculate the Reduced Level (RL) of the Chejja:
The Reduced Level (RL) of the Chejja is the elevation of the point where the chejja staff is held. It can be calculated by subtracting the reading taken with the inverted staff (2.8) from the Height of Instrument (HI).
RL of Chejja = HI - Chejja reading
RL of Chejja = 101.40 - 2.8
RL of Chejja = 98.60
Therefore, the RL of the chejja is 98.60 m.
Since none of the given answer options match the calculated RL of the chejja, the correct answer is none of the above. Please check if there was a mistake in the options provided or if there was any additional information given that could help determine the correct answer.
- The reading taken from an instrument station on a benchmark of RL 100.00 is 1.4.
- The reading taken with an inverted staff (chejja) is 2.8 m.
Now, let's calculate the RL of the chejja.
1. Determine the Height of Instrument (HI):
The Height of Instrument (HI) is the elevation of the line of sight of the instrument above the benchmark. It is calculated by adding the instrument reading (1.4) to the benchmark elevation (RL 100.00).
HI = RL of benchmark + Instrument reading
HI = 100.00 + 1.4
HI = 101.40
2. Calculate the Reduced Level (RL) of the Chejja:
The Reduced Level (RL) of the Chejja is the elevation of the point where the chejja staff is held. It can be calculated by subtracting the reading taken with the inverted staff (2.8) from the Height of Instrument (HI).
RL of Chejja = HI - Chejja reading
RL of Chejja = 101.40 - 2.8
RL of Chejja = 98.60
Therefore, the RL of the chejja is 98.60 m.
Since none of the given answer options match the calculated RL of the chejja, the correct answer is none of the above. Please check if there was a mistake in the options provided or if there was any additional information given that could help determine the correct answer.
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The reading taken from an instrument station on a benchmark of RL 100.00 is 1.4 and on a chejja reading taken with inverted staff is 2.8 m. Then RL of chejja isa)104.2 mb)101.40 mc)98.6 md)none of the aboveCorrect answer is option 'A'. Can you explain this answer?
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The reading taken from an instrument station on a benchmark of RL 100.00 is 1.4 and on a chejja reading taken with inverted staff is 2.8 m. Then RL of chejja isa)104.2 mb)101.40 mc)98.6 md)none of the aboveCorrect answer is option 'A'. 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 reading taken from an instrument station on a benchmark of RL 100.00 is 1.4 and on a chejja reading taken with inverted staff is 2.8 m. Then RL of chejja isa)104.2 mb)101.40 mc)98.6 md)none of the aboveCorrect answer is option 'A'. 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 reading taken from an instrument station on a benchmark of RL 100.00 is 1.4 and on a chejja reading taken with inverted staff is 2.8 m. Then RL of chejja isa)104.2 mb)101.40 mc)98.6 md)none of the aboveCorrect answer is option 'A'. Can you explain this answer?.
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