C. Leveling Rod BS Elev. of TP, Difference in Elev. between Elev of BM and BM₂ BM, (known) (Do not copy the illustration or drawing) Table: Determination of Elevation STATION BS HI FS ELEVATION BM1 1.60 m 100 m TP1 1.47m 0.85 TP2 1.67 m 0.78 TP3 1.54 m 0.89 BM2 0.75 COMPUTATIONS: 1. Computing Height of Instrument and Elevation. In differential leveling, the following two (2) equations are repeatedly used a.) HI = Elev + BS b.) Elev = HI - FS Where: HI= height of instrument above a reference datum (MSL) BS = backsight reading on the rod (or plus sights) FS = foresight reading on the rod (or minus sights) ELEV = elevation above datum of a point sighted BS Leveling Rod L₁ FSI HI, BM, STOMATO Leveling Rod Horizontal Line of Sight FS BM Elev. of BM₂

C. Leveling Rod BS Elev. of TP, Difference in Elev. between Elev of BM and BM₂ BM, (known) (Do not copy the illustration or drawing) Table: Determination of Elevation STATION BS HI FS ELEVATION BM1 1.60 m 100 m TP1 1.47m 0.85 TP2 1.67 m 0.78 TP3 1.54 m 0.89 BM2 0.75 COMPUTATIONS: 1. Computing Height of Instrument and Elevation. In differential leveling, the following two (2) equations are repeatedly used a.) HI = Elev + BS b.) Elev = HI - FS Where: HI= height of instrument above a reference datum (MSL) BS = backsight reading on the rod (or plus sights) FS = foresight reading on the rod (or minus sights) ELEV = elevation above datum of a point sighted BS Leveling Rod L₁ FSI HI, BM, STOMATO Leveling Rod Horizontal Line of Sight FS BM Elev. of BM₂

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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2. Given the following differential level notes BS HI FS Elevation 100m Station BM-A 1.73 ТР-1 2.50 1.85 ТР-2 2.76 1.05 ТР-3 3.15 1.20 BM-B 1.93 0.74 ТР-4 1.67 0.98 ТР-5 2.12 1.84 BM-C 1.77 Determine the following: a. Station with the highest and lowest elevation b. DE between BM-B and BM-C
Q2: The level is setup at 20 m from point A and 200 m from point B. The staff reading at point A is 2.3157, then the staff is putting in inverse situation on point B that lie on the lower surface of a bridge and the staff reading at point B is 3.6723. Find the difference in level between the two points taking into account the effect of curvature and refraction.
Slope 8A Slope 8a Slope Oc Deflection Ac Maximum deflection between support 5m 12 kN Sm 5 kN/m 個 Sm C
The differential level notes is shown below. The elevation of the reference station (BM-100) is 100.709 meters above mean sea level. STA BS HI FS ELEVATION BM-100 2.856 ТР-1 3.230 1.285 ТР-2 3.096 0.688 TP-3 4.059 0.525 ТР-4 3.845 1.980 ТР-5 3.553 2.320 ТР-6 2.894 2.552 BM-200 3.123 a.) Complete the columns for Height of the Instrument (HI) and Elevation of the table above. b.) What is the elevation of BM-200 and its difference in elevation from station BM-100? c.) What is the highest station and its elevation?
The following level notes for the determination of BM#2 do not check. The elevation of BM#1 and the rod readings are correct. Determine the corrected elevation of BM#2. STA B.S. H.I. F.S. ELEV. BM 1 6.72 127.36 120.64 TP 1 12.43 138.55 1.24 126.12 ТР 2 2.65 140.09 1.11 137.44 TP 3 0.54 132.59 8.04 132.05 ТР 4 4.27 124.55 12.31 120.28 BM 2 3.02 121.33
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Complete the differential level notes shown below, and determine the height of instrument of the second setup. STA BM 10 2.085 ТР1 BS (m) HI (m) FS (m) | ELEVATION (m) 137.450 2.015 0.982 1.428 2.423 TP2 1.864 BM11 0.423 а. 140.57 m b. not included in the list c. 138.553 m d. 139.54 m е. 141.00 m