Summary Fundamentals of Surveying_CE 404_Fieldwork_Laboratory Manual, Procedures, Figures and Computations
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Course
CE 404
Institution
Batangas State University
Fundamentals of Surveying laboratory reports and field works with lectures, procedures, and computations that will help students understand a topic in surveying
Name: Perez, Frances Mae P. SR-Code: 19-09045
Section: BSCE-2207
LABORATORY EXERCISE NO. 1
PROBLEM: Pacing
OBJECTIVES: a) To determine the individual pace factor.
b) To measure distance by pacing.
LAB EXERCISE OUTLINE
A. INSTRUMENTS & ACCESSORIES: Range Pole, Steel Tape, Markers (hubs, chalk, paint or
crayons)
B. PROCEDURE:
1. Determining Pace Factor.
a) Select a straight and level course and on both ends, establish markers at least 90
meters apart. Designate these end points as A and B.
b) Walk over the course at a natural pace or gait starting with either heel or toe over point
A and count the number of paces to reach point B.
c) For succeeding trials, walk from B to A, then A to B, until 5 trials are completed, and the
number of paces recorded accordingly.
d) Refer to the accompanying sample format for the recording of observed field data.
TAPE DIST. NO. OF MEAN NO. PACE FACTOR
TRIAL LINE
(m) PACES OF PACES (m/pace)
1 AB 141
2 BA 140
3 AB 100 144 142.2 0.7032
4 BA 143
5 AB 143
2. Measuring Distance by Pacing
a) Define or establish the end points of another level course whose length is to be
determined by pacing. Designate these end points as C and D.
b) For the first trial, walk over the course from C to D at a natural pace and record the
number of paces. Then, walk from D to C and again record the number of paces.
c) Repeat the above procedure until the five trials are completed.
, d) After the field data is recorded, make an actual taping of the course CD to determine the
taped distance.
e) Refer to the accompanying sample format for the recording of observed field data.
NO. OF PACED TAPED RELATIVE
TRIAL LINE MEAN
PACES DIST DIST PRECISION
1 CD 168
2 DC 167
3 CD 169 167.8 117.9970 118.9 1/100
4 DC 168
5 CD 167
C. COMPUTATIONS
1. Computing the Pace Factor (PF)
a) Get the sum of the numerator of pace for the five trials performed on course AB then
compute the mean number of paces.
b) Divide the known or taped length of course AB by the mean number of paces for Ab to
determine the pace factor.
L= 100 m (length of line AB)
𝐧𝟏 = 5 (number of trials)
𝐬𝐮𝐦 = (141 + 140 + 144 + 143 + 143) = 711 paces
𝐌𝟏 = sum/n1
711
= = 142.2 paces
5
𝐏𝐅 = L/M1
100m
= 142.2 paces = 0.7032 m/pace
2. Computing Paced Distance (PD)
a) Get the sum of the number of paces for the five trials performed on course CD and
compute the mean number of paces.
b) Multiply the mean number of paces for CD by the pace factor to obtain the paced
distance.
𝐏𝐃 = L/M1
= 167.8 paces x 0.7032 m/pace
= 117.9970 m
3. Computing Relative Precision (RP)
a) Determine the difference between the taped distance of CD and the paced distance of
CD.
b) Divide the difference by the taped distance of CD and reduce the numerator to unity to
determine the relative precision.
TD = 118.9 m (taped distance)
PD = 117.9970 m (paced distance)
RP = (TD-PD) / TD
= (118.9m-117.9970m) / 118.9m
=1/131.67 say 1/100
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