SURVEYING III FIELD REPORT.

Group No: 4

DATA PRESENTATION AND ANALYSIS.

Reduced Level at the starting point A0 = 1500 m.
Height of the instrument (HI):= 1.2m
Depth of Excavation: 5m.
Height of collimation (HC): 1501.2m
Proposed Ground Level = 1500m – 5m = 1495 m.
Dimensions of each grid-square = 10m x 10m.
The existing ground elevations at any grid corner = HC – Levelling Staff Reading.
A0 2 3 4 5 6 7 8 9 10

I
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Grid- Levelling Staff existing ground Proposed Depth of No. of dxn

Square Reading. elevations Ground excavation squares
reference (m) (1501.2 – Staff. R.) Level (d) m (n)
A0 - 1500.000 1495 5.000 1 5.000
A1 1.145 1500.055 1495 5.055 2 10.110
A2 1.185 1500.015 1495 5.015 2 10.030
A3 1.290 1499.910 1495 4.910 2 9.820
A4 1.380 1499.820 1495 4.820 2 9.640
A5 1.535 1499.665 1495 4.665 2 9.330
A6 1.575 1499.625 1495 4.625 2 9.250
A7 1.685 1499.515 1495 4.515 2 9.030
A8 1.689 1499.511 1495 4.511 2 9.022
A9 1.693 1499.507 1495 4.507 2 9.014
A10 1.695 1499.505 1495 4.505 1 4.501
B0 1.585 1499.615 1495 4.615 2 9.230
B1 1.670 1499.530 1495 4.530 4 18.120
B2 1.680 1499.520 1495 4.520 4 18.080
B3 1.675 1499.525 1495 4.525 4 18.100
B4 1.680 1499.520 1495 4.520 4 18.080
B5 1.520 1499.680 1495 4.680 4 18.720
B6 1.475 1499.725 1495 4.725 4 18.900
B7 1.395 1499.805 1495 4.805 4 19.220
B8 1.280 1499.920 1495 4.920 4 19.680
B9 1.180 1500.020 1495 5.020 4 16.080
B10 1.174 1500.026 1495 5.026 2 10.052
C0 1.655 1499.545 1495 4.545 2 9.090
C1 1.675 1499.525 1495 4.525 4 18.100
C2 1.660 1499.540 1495 4.540 4 18.160
C3 1.610 1499.590 1495 4.590 4 18.360
C4 1.490 1499.710 1495 4.710 4 18.840
C5 1.450 1499.750 1495 4.750 4 19.000
C6 1.425 1499.775 1495 4.775 4 19.100
C7 1.395 1499.805 1495 4.805 4 19.220
C8 1.330 1499.800 1495 4.800 4 19.200
C9 1.145 1500.055 1495 5.055 4 20.220
C10 1.154 1500.046 1495 5.046 2 10.090
D0 1.695 1499.505 1495 4.505 2 9.010
D1 1.635 1499.565 1495 4.565 4 18.260
D2 1.625 1499.575 1495 4.575 4 18.300
D3 1.555 1499.645 1495 4.645 4 18.580
D4 1.490 1499.710 1495 4.710 4 18.840
D5 1.410 1499.750 1495 4.750 4 19.000
D6 1.395 1499.805 1495 4.805 4 19.220
D7 1.400 1499.800 1495 4.800 4 19.200
D8 1.335 1499.865 1495 4.865 4 19.460
D9 1.245 1499.955 1495 4.955 4 19.820
D10 1.230 1499.970 1495 4.970 2 9.940
E0 1.590 1499.610 1495 4.610 2 9.220
E1 1.635 1499.565 1495 4.565 4 18.260
E2 1.670 1499.530 1495 4.530 4 18.120
E3 1.495 1499.705 1495 4.705 4 18.820
E4 1.450 1499.750 1495 4.750 4 19.000
E5 1.365 1499.835 1495 4.835 4 19.340
E6 1.375 1499.825 1495 4.825 4 19.300
E7 1.412 1499.788 1495 4.788 4 19.152
E8 1.395 1499.805 1495 4.805 4 19.220
E9 1.350 1499.850 1495 4.850 4 19.400
E10 1.328 1499.872 1495 4.872 2 9.744
F0 1.695 1499.505 1495 4.505 2 9.010
F1 1.675 1499.525 1495 4.525 4 18.100
F2 1.690 1499.510 1495 4.510 4 18.040
F3 1.510 1499.690 1495 4.690 4 18.760
F4 1.435 1499.765 1495 4.765 4 19.060
F5 1.380 1499.820 1495 4.820 4 19.280
F6 1.395 1499.805 1495 4.805 4 19.220
F7 1.422 1499.778 1495 4.788 4 19.152
F8 1.328 1499.872 1495 4.872 4 19.488
F9 1.355 1499.845 1495 4.845 4 19.380
F10 1.340 1499.860 1495 4.860 2 9.720
G0 1.725 1499.475 1495 4.475 2 8.950
G1 1.692 1499.508 1495 4.508 4 18.032
G2 1.634 1499.566 1495 4.566 4 18.264
G3 1.609 1499.591 1495 4.591 4 18.364
G4 1.520 1499.680 1495 4.680 4 18.720
G5 1.472 1499.728 1495 4.728 4 18.912
G6 1.375 1499.825 1495 4.825 4 19.300
G7 1.430 1499.770 1495 4.770 4 19.080
G8 1.395 1499.805 1495 4.805 4 19.220
G9 1.246 1499.954 1495 4.954 4 19.816
G10 1.255 1499.945 1495 4.945 2 9.890
H0 2.950 1498.250 1495 3.250 2 6.500
H1 1.905 1499.295 1495 4.295 4 17.180
H2 1.682 1499.518 1495 4.518 4 18.072
H3 1.582 1499.618 1495 4.618 4 18.472
H4 1.495 1499.705 1495 4.705 4 18.820
H5 1.460 1499.740 1495 4.740 4 18.960
H6 1.392 1499.808 1495 4.808 4 19.232
H7 1.448 1499.752 1495 4.752 4 19.008
H8 1.365 1499.835 1495 4.835 4 19.340
H9 1.342 1499.858 1495 4.858 4 19.432
H10 1.326 1499.874 1495 4.874 2 9.748
I0 2.490 1498.710 1495 3.710 2 7.420
 I1 1.940 1499.260 1495 4.260 4 17.040
I2 1.660 1499.540 1495 4.540 4 18.160
I3 1.612 1499.588 1495 4.588 4 18.352
I4 1.505 1499.695 1495 4.695 4 18.780
I5 1.450 1499.750 1495 4.750 4 19.000
I6 1.349 1499.851 1495 4.851 4 19.404
I7 1.485 1499.715 1495 4.715 4 18.860
I8 1.296 1499.904 1495 4.904 4 19.616
I9 1.273 1499.927 1495 4.927 4 19.708
I10 1.261 1499.939 1495 4.939 2 9.878
J0 1.950 1499.250 1495 4.250 2 8.500
J1 1.948 1499.252 1495 4.252 4 17.008
J2 1.652 1499.548 1495 4.548 4 18.192
J3 1.675 1499.525 1495 4.525 4 18.100
J4 1.535 1499.665 1495 4.665 4 18.660
J5 1.500 1499.700 1495 4.700 4 18.800
J6 1.386 1499.814 1495 4.814 4 19.256
J7 1.432 1499.768 1495 4.768 4 19.072
J8 1.385 1499.815 1495 4.815 4 19.260
J9 1.375 1499.825 1495 4.825 4 19.300
J10 1.325 1499.875 1495 4.875 2 9.750
K0 1.685 1499.515 1495 4.515 1 4.515
K1 1.695 1499.505 1495 4.505 2 9.010
K2 1.700 1499.500 1495 4.500 2 9.000
K3 1.455 1499.745 1495 4.745 2 9.490
K4 1.465 1499.735 1495 4.735 2 9.470
K5 1.385 1499.815 1495 4.815 2 9.630
K6 1.250 1499.950 1495 4.950 2 9.900
K7 1.295 1499.905 1495 4.905 2 9.810
K8 1.385 1499.815 1495 4.815 2 9.630
K9 1.375 1499.825 1495 4.825 2 9.650
K10 1.255 1499.945 1495 4.945 1 4.945

∑ 𝒄𝒙𝒏

1877.285m

Area of one grid square = (10 x 10) m2

= 100m2.

𝑨𝒓𝒆𝒂 𝒐𝒇 𝑮𝒓𝒊𝒅 𝒔𝒒𝒖𝒂𝒓𝒆 (𝑨)𝒙 ∑ 𝒄 𝒙 𝒏

The volume of earthworks to be excavated = 𝟒
𝟏𝟎𝟎 𝑿 𝟏𝟖𝟕𝟕.𝟐𝟖𝟓
=[ ] m3
𝟒
= 46 932.125 m3