From the double rodded level notes shown below, STA BS FS ELEV BM1 7.08 448.123 TP-1 (L) 11.24 TP-1 (H) 9.1 TP-2 (L) 10.04 TP-2 (H) 8.92 TP-3 (L) 0.75 TP-3 (H) 1.35 TP-4 (L) 2.67 TP-4 (H) BM-2 (L) BM-2 (H) 1.44 2.73 0.6 1.21 0.45 8.84 7.62 3.11 1.77 10.27 10.27 Determine the height of instrument between TP-3 and TP-4 in the path of higher elevation. Express answer into 3 decimal places and do not type the unit.
From the double rodded level notes shown below, STA BS FS ELEV BM1 7.08 448.123 TP-1 (L) 11.24 TP-1 (H) 9.1 TP-2 (L) 10.04 TP-2 (H) 8.92 TP-3 (L) 0.75 TP-3 (H) 1.35 TP-4 (L) 2.67 TP-4 (H) BM-2 (L) BM-2 (H) 1.44 2.73 0.6 1.21 0.45 8.84 7.62 3.11 1.77 10.27 10.27 Determine the height of instrument between TP-3 and TP-4 in the path of higher elevation. Express answer into 3 decimal places and do not type the unit.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Question

Transcribed Image Text:**Double Rodded Level Note Calculation**
Given the double rodded level notes shown below:
| STA | BS | FS | ELEV |
|-------|------|--------|--------|
| BM1 | 7.08 | | 448.123|
| TP-1 | 11.24| 2.73 | |
| TP-1 (L) | 9.1 | 0.6 | |
| TP-2 | 10.04| 1.21 | |
| TP-2 (L) | 8.92 | 0.45 | |
| TP-3 | 0.75 | 8.84 | |
| TP-3 (L) | 1.35 | 7.62 | |
| TP-4 | 2.67 | 3.11 | |
| TP-4 (L) | 1.44 | 1.77 | |
| BM-2 (L) | | 10.27 | |
| BM-2 (H) | | 10.27 | |
Determine the height of the instrument between TP-3 and TP-4 in the path of higher elevation. Express the answer to 3 decimal places and do not type the unit.
**Steps:**
1. Identify the Back Sight (BS) and Fore Sight (FS) readings available in the table.
2. The elevation difference between each point can be calculated using these readings.
3. To find the height of the instrument (HI) between TP-3 and TP-4, follow the calculation:
- From TP-3 (H): BS = 0.75, FS = 8.84
- From TP-3 (L): BS = 1.35, FS = 7.62
- From TP-4 (H): BS = 2.67, FS = 3.11
- From TP-4 (L): BS = 1.44, FS = 1.77
4. Apply the formula: **HI = Elevation of Previous Point + BS - FS**
Here, we will determine the average of the two paths (H and L).
**Calculations:**
Path H:
\[ \text{HI}_{
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