QI: -In leveling, the following readings were taken starting from B.M. of (29.386m) elevation, then the instrument was moved after the (3) and (8t) readings (1.793, 1.326, 1.179, 1.448, 1.354, 1.676, 1.526, 1.437, 1.789, 1.214 & 1.414). Compute the elevations of the points by using height of instrument method?

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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ملاحظة : الاجابة على جميع الأسئلة و رسم السؤال الثلث يكون على ورقة بيانية
QI: -In leveling, the following readings were taken starting from B.M. of
(29.386m) elevation, then the instrument was moved after the (3) and (8th)
readings (1.793, 1.326, 1.179, 1.448, 1.354, 1.676, 1.526, 1.437, 1.789,
1.214 & 1.414). Compute the elevations of the points by using height of
instrument method?
Q2: -Compute the corrected elevations of all points if R.L. (known) of B.M.
was (170.850 m) and R.L. (computed) of B.M. was (170.858 m), C 10 using
the following data: -
Point
Distance
R.L.
B.M.
170.850
400
172.433
850
176.309
950
3
174.540
690
B.M.
170.858
Q3: - The longitudinal levelling was done for construction road; the values of
ground elevation are shown in table below:-
Station
0+70
1+30
1+80
Ground Elevation 50.950
Grade Elevation 50.000
1.) Draw the profile section with horizontal scale (1/ 1000), vertical
51.500
51.300
49.750
scale (1/ 50).
2.) Draw the construction line for a road with elevation (50.000 m)
and slope (1 %) up.
Transcribed Image Text:ملاحظة : الاجابة على جميع الأسئلة و رسم السؤال الثلث يكون على ورقة بيانية QI: -In leveling, the following readings were taken starting from B.M. of (29.386m) elevation, then the instrument was moved after the (3) and (8th) readings (1.793, 1.326, 1.179, 1.448, 1.354, 1.676, 1.526, 1.437, 1.789, 1.214 & 1.414). Compute the elevations of the points by using height of instrument method? Q2: -Compute the corrected elevations of all points if R.L. (known) of B.M. was (170.850 m) and R.L. (computed) of B.M. was (170.858 m), C 10 using the following data: - Point Distance R.L. B.M. 170.850 400 172.433 850 176.309 950 3 174.540 690 B.M. 170.858 Q3: - The longitudinal levelling was done for construction road; the values of ground elevation are shown in table below:- Station 0+70 1+30 1+80 Ground Elevation 50.950 Grade Elevation 50.000 1.) Draw the profile section with horizontal scale (1/ 1000), vertical 51.500 51.300 49.750 scale (1/ 50). 2.) Draw the construction line for a road with elevation (50.000 m) and slope (1 %) up.
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