An inverse method of leveling is executed between two existing concrete structures and across a concrete wall located midway between the two structures. All rod readings, as indicated in the accompanying sketch, were taken with rod held upside down. If the elevation of A (bottom of the concrete beam of the first structure) is 240. 05m, calculate the elevation of the bottom of the concrete beam of the second structure (indicated as C). Conc. Wall Bottom Line- of Concrete Beam (Elev Unknown) Bottom Line of Concrete Beam (Elev 240.05 m) Leveling Rod Leveling Rod Leveling Rod Leveling Rod 2.05m (BS) 2.87m (FS) 2.75m (BS) 2.30m (FS) L-

An inverse method of leveling is executed between two existing concrete structures and across a concrete wall located midway between the two structures. All rod readings, as indicated in the accompanying sketch, were taken with rod held upside down. If the elevation of A (bottom of the concrete beam of the first structure) is 240. 05m, calculate the elevation of the bottom of the concrete beam of the second structure (indicated as C). Conc. Wall Bottom Line- of Concrete Beam (Elev Unknown) Bottom Line of Concrete Beam (Elev 240.05 m) Leveling Rod Leveling Rod Leveling Rod Leveling Rod 2.05m (BS) 2.87m (FS) 2.75m (BS) 2.30m (FS) L-

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Q2) The distance between two bench marks A and B was 40m, a dumpy level was place C on an extension of AB such that AC360m. The following data were recorded: Staff reading on B.M.A (R.L.=10.750) - Staff reading on B.M.B (R.L.=11.750) 1. Was the line of columniation inclined upwards or downwards and by how much? 2. Calculate the readings that should be obtained on A and B to have a horizontal line sight. 0.750 1.750
Complete the following level notes. Show your detailed solution and checking. Differential Leveling Station BS HI FS Elevation BM1 1.050 ---- 147.630 TP1 1.224 1.923 TP2 1.276 1.481 TP3 1.087 2.290 TP4 1.162 2.140 TP5 1.751 2.700 BM2 ---- 2.565
Complete a set of differential leveling field notes for the simulated survey below. Perform a mathematical error check and an allowable error check of your completed field notes. Show all work BM-1 TP-1 BM 1 TP-2 BM-2 TP-3 9.60 BM-1 1.14 Sta. Set-up #1 Set-up #5 B.S. 4.41 TP-1 8.96 12.25 7.96 TP-3 HI ^ Set-up #2 F.S. 12.98 1.61 TP-2 ㅈ Set-up #4 Elev. Set-up #3 100.00 7.95 1.99 BM 2 Distance 250° 275' 325' 405* 225' Closing elevation = Error of closure A EBS - EFS Math error: YES or Allowable error = Survey: OK or REDO NO Note: Total survey distance (ft.) it the sum of the values in the "Distance" column.
Q4: a. The following readings were observed successfully with a leveling instrument. The instrument was shifted after 5th and 11th readings. Draw a page of level book and determine the R. L's of various points by H.I method if the R.L of 1" point was 264.250 m. [CLO-3, Marks-20] 0.485, 1.020, 1.787, 3.395, 3.875, 0.360, 1.305, 1.785, 2.675, 3.385, 3.885, 1.835, 0.435 and 1.705
Complete the following level notes. Show your detailed solution and checking. Double Rodded Leveling Station BM1 TP1 TP2 TP3 TP4 BM2 BS 1.045 1.324 1.335 1.296 1.250 1.278 1.354 1.190 2.105 - HI FS -- 1.943 1.888 1.580 1.523 2.395 2.430 2.143 2.211 2.445 Elevation 155.520
1. Complete the differential leveling notes shown in Table 1 and perform the arithmetic check. Show sample calculations of your work. Then draw a neat profile view sketch showing the ground elevations of all of the stations and the various locations of the level and level rod. Station BM 3 TP 1 TP 2 TP 3 BM 3 BS (m) 1.613 1.425 1.307 1.340 Table 1 HI (m) FS (m) 1.927 1.710 1.273 0.780 Elevation (m) 133.005
3. If gage A reads -20 kPa, determine the elevations of points L, N, Q and 9. Z El. 65.00 E F Air El. 49.00 et H K下 L. sp gr 0.700 El. 38.00 t M Same elev as O EL 26.00 hs ha hi D. El. 14.00 Ft
Q - The subsequent readings were curious about dumpy level with four.zero m leveling team of workers and 20.0 m c program languageperiod. 1.755, 2.505, 3.050, 3.950, 1.750, 2.355, 3.a hundred, three.805, zero.905, 2.0.5 and 3.250. If R.L of first point is 15.zero m. Calculate the R.L of different points by way of H.I approach.
E-type Levelling Staff a 1.932 1.930 1.920 1.910 1.900 With reference to the figure above, the leveling rod reading equals: O 1.930 O 1.900 O 1.932
III. Differential Leveling 1. Complete the table below. STATION BM1 TP1 TP2 TP3 TP4 TP5 BM2 BS 2.11 2.12 2.14 2.16 2.33 2.20 HI FS 1.27 1.28 2.29 2.30 2.31 2.32 ELEVATION 230.30 229.58
PROBLEM 1 +From the given data of differential levelling shown. STA BS FS BM1 1.256 TP1 1.116 1.886 TP2 1.228 1.527 ТРЗ 1.189 2.246 ТР4 1.070 2.017 TP5 1.831 2.656 ТР6 1.489 2.723 BM2 2.548 The elevation of BM1 is 98.5 meters. Solve for the following: a. What is the value of HI in the 2nd set up? b. Find the elevation of TP5 c. Determine the difference in elevation of TP3 and TP6. d. Determine the elevation of BM2. PROBLEM 2 Explain how is the error cancelled in Reciprocal Levelling. PROBLEM 3 Two points A and B were set up. With the instrument at point A, the rod reading at A was 1.623 m, and the rod reading at B was 2.875 m. The level is transferred at B, the rod reading at A was 0.362, and the rod reading at B was 1.622. a. Find the elevation between A and B. b. What would be the error in the line of sight?
QUESTION 4 Table Q4 shows the booking of levelling fieldwork conducted during light rain. It was later found out that some of the readings are illegible due to the rain water. Complete the booking and perform all checks. Table Q4 BS IS FS HPC RL Remarks ? 20.662 18.569 TBM 1 RL 18.569 2.010 ? ? 18.645 3.467 0.418 20.244 C (CP) 3.053 ? D E TBM 2 RL 22.968 1.467 22.243 22.959 !! IMPORTANT ! SAVE THIS QUESTION PAPER (SHADED AREA) IN PDF AND SUBMIT IT TO THE E-LEARNING WEBSITE