College

We appreciate your visit to 1 Fill in the following gap of RL a 9 9 b 97 4 c 95 4 d 97 9 2 In a two peg. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

1. Fill in the following gap of RL.
a) 9.9
b) 97.4
c) 95.4
d) 97.9

2. In a two-peg test of a level, the following readings were made:
- Instrument at midpoint between A and B, reading on [tex]$A = 6.350$[/tex], reading on [tex]$B = 4.700$[/tex].
- Instrument at B, reading on [tex]$A = 4.570$[/tex], reading on [tex]$B = 2.900$[/tex].

What is the difference in elevation between the two points?
a) 1.570
b) 1.600
c) 1.700
d) 1.670

3. A surveyor went to the field and recorded the following readings: [tex]$1.320, 1.250, 3.650, 0.670$[/tex], respectively. His temporary benchmark was 43.500. What was his height of instrument?
a) 42.150
b) 44.150
c) 44.830
d) 45.490

Answer :

Sure! Let's break down each part of this question step-by-step.

Question 1: Unfortunately, we don't have enough information to calculate the gap of RL based on the provided data. Therefore, we can't determine the answer for this part.

Question 2: We need to calculate the difference in elevation between two points using a two-peg test. Here are the readings:

- First setup (Instrument at midpoint):
- Reading on point A = 6.350
- Reading on point B = 4.700

- Second setup (Instrument at B):
- Reading on point A = 4.570
- Reading on point B = 2.900

To find the difference in elevation between points A and B, we use the formula:

[tex]\[ \text{Difference in elevation} = (\text{Reading on A from first setup} - \text{Reading on A from second setup}) + (\text{Reading on B from second setup} - \text{Reading on B from first setup}) \][/tex]

Putting in the values we have:

[tex]\[ \text{Difference in elevation} = (6.350 - 4.570) + (2.900 - 4.700) \][/tex]

[tex]\[ \text{Difference in elevation} = 1.780 - 1.800 \][/tex]

[tex]\[ \text{Difference in elevation} = -0.020 \][/tex]

So, the difference in elevation between the two points is [tex]\(-0.020\)[/tex].

Question 3: We need to calculate the height of the instrument given the readings:

- Temporary Bench Mark (TBM) height = 43.500
- Backsight reading (first reading) = 1.320
- Foresight reading (last reading) = 0.670

We use the formula to find the Height of Instrument (HI):

[tex]\[ \text{Height of Instrument} = \text{Temporary Bench Mark (TBM)} + \text{Backsight reading} - \text{Foresight reading} \][/tex]

Substitute the values into the formula:

[tex]\[ \text{Height of Instrument} = 43.500 + 1.320 - 0.670 \][/tex]

[tex]\[ \text{Height of Instrument} = 44.150 \][/tex]

Thus, the height of the instrument is 44.150.

So, to summarize:

- The difference in elevation between the two points is [tex]\(-0.020\)[/tex].
- The height of the instrument is 44.150.

Thanks for taking the time to read 1 Fill in the following gap of RL a 9 9 b 97 4 c 95 4 d 97 9 2 In a two peg. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada