Final Quiz Flashcards
Set 1 Problem 14: There are 8 vehicles observed in a 250 m section N. Bacalso Avenue. Given that the average time headway is 3.6 seconds, compute the space mean speed, in kph.
31.25 kph (p. 9)
Set 1 Problem 20: Five racing cars are traveling on a 2.5 km track. An observer is standing at a point on the track for a period of 20 minutes and records the instantaneous speed of each vehicle as it crosses his point of observation. The following table are obtained:
(p. 11)
Compute the time mean speed.
157.47 kph
Set 1 Problem 21: Three measurements were recorded as 278.32 m, 279.44 m, 277.86 m and given weights of 2, 5, and 3, respectively. Determine the weighted mean.
278.74 kph (p. 10)
Set 1 Problem 23: A line was measured by a 20 m long tape. There are 2 tallies and 3 pins, and the distance of the last pin to the end of the line is 5.74 m. Find the length of the line.
465.74 m
Set 1 Problem 24: Assume that any distance of 100 ft can be taped with an error ± 0.025 ft if certain techniques are employed. Determine the error in taping 4,000 ft using this skill.
± 0.158 ft
Set 1 Problem 30: Given a triangular lot ABC with the following data:
(p. 11)
What is the measure of distance BC?
234.76 m (p. 11, 12)
Set 1 Problem 57: A distance measured with a 50-m steel tape is recorded as 382.68 m. The tape is known to be 0.012 m too long. What is the correct length of the line in meters?
382.772 m
Set 1 Problem 58: Two hills 80 km apart has top elevations of 50 m and 106 m at A and B respectively. Find the height of the shortest tower that could be constructed at B so that it would be visible from A considering the effect of curvature and refraction correction.
80 m
Set 1 Problem 59: A differential leveling was conducted from BM1 to BM2 20 km apart. BM1 is at elevation 142.26 m. The backsight distances averages 150 m in length and the foresight distances averages 100 m. The recorded elevation of BM2 was 247.05 m. If the level used is out of adjustment such that when the bubble was centered the line of sight was inclined of 0.0025 m upward in distance of 100m. What would be the corrected elevation of BM2?
246.95 m
Set 1 Problem 62: Assume that a line is measured in three sections, with errors in the individual parts equal to ± 0.015 ft, ± 0.024 ft, ± 0.020 ft respectively. Determine the anticipated error of the total length.
± 0.035 ft
Set 2 Problem 5: A line of levels, 5 km long is run between A and B with average backsight and foresight distances of 150 m. The average backsight reading is 3.6 m and each time it is taken, the rod is inclined sidewards from the vertical by 4. What is the correct elevation of B if its recorded elevation is 352.65 meters?
352.51 m
Set 2 Problem 25: A 30 m tape is of standard length at a temperature of 20° C and is used to measure a line with a measured distance of 618 m. During the time of measurement, the temperature was 38° C. The coefficient of thermal expansion of the tape used is 11.7 x 10^-6/° C. What is the corrected length of the line?
618.13 m
Set 2 Problem 28: A sight is taken with an engineer’s level at rod held 100 m away an initial reading of 1.95 m is observed. The bubble is then level through five spaces on the level tube, and the rod reading is now 2.03 m. What is the sensitivity of the bubble tube in seconds of arc?
33”
Set 2 Problem 41: Given a triangular lot ABC with the following data:
(p. 11)
What is the bearing of side CA?
N 58.92° W
Set 2 Problem 42: The area bounded by the water line of a reservoir and the contours with a contour interval of 2 m are as follows: A1 = 12,340 m², A2 = 10,530 m², A3 = 9,180 m², A4 = 7,720 m², A5 = 5,520 m², A6 = 3,870 m². Determine the capacity of the reservoir using End Area Method.
82,110 m³
Set 2 Problem 44: A man 1.8 m tall standing on one bank of a river can just see the top of a 41.27 m- high tower standing on the opposite bank of the river. Considering the effect of curvature and refraction, how wide should the river be?
30 km (p. 30)
Set 2 Problem 54: Determine the required length of spiral with a design speed of 80 kph if the central circular curve has a degree of 5.
80 m
Set 2 Problem 55: Data on traffic accident recorded on a certain section of a highway for the past 5 years shows 4,684 total accidents. If the average daily traffic is 482, what is the accident rate per million entering vehicles?
5,325
Set 2 Problem 56: A highway curve has a length of 120 m and a radius of 90 m. If the required site distance is 80 m, how far off the center of the curve could you allow the bushes to grow?
8.89 m
Set 3 Problem 46: Given a compound curve with a long chord equal to 142 m and makes angles of 16° and 20° respectively with the tangents. The common tangent is parallel to the long chord. Compute the bigger radius of the 2 curves.
286.68 m
Set 3 Problem 53: A spiral curve with a length of 80 m is to be laid to each side of a 6° central simple curve. Find the required super elevation in percent of the spiral per meter width for a design speed of 60 kph.
14.89%
Set 3 Problem 61: Determine the required length of spiral with a design speed of 80 kph if the central circular curve has a degree of 5.
80 m
Set 3 Problem 72: A distance was measured on an 8% slope and found to be 1,654.30 m. What is the horizontal distance measured in meters?
1,559.294 m
Set 4 Problem 7: A 3-degree simple curve has an external distance of 9.12 m. What is the central angle using chord basis?
24.80°
Set 4 Problem 10: Find the area of a piece of land with an irregular boundary as follows:
(p. 11)
The stations are on a straight line boundary. Use Trapezoidal Rule.
170.65 m²
Set 4 Problem 26: A surveyor paced a 150-m long line AB in order to determine his pace factor. He paced 5 times with the following data: 240, 238.5, 236, 237.5, and 241. He then paced a certain line CD 5 times with the following result: 354.5, 358, 353, 357.5, and 352. What is the length of the line CD?
223.30 m
Set 4 Problem 28: Given the cross-section notes for a ground excavation for a 10-m wide roadway.
Sta. 16 + 100
(p. 11)
What is the cross-sectional area of Sta. 16 + 100 in m²?
58.12 m²
Set 4 Problem 38: A closed traverse has the following data:
(p. 12)
Compute the distance CD in meters.
77.60 m
Set 4 Problem 39: A closed traverse has the following data:
(p. 12)
Compute the distance DA in meters.
75.01 m
Set 4 Problem 40: A closed traverse has the following data:
(p. 12)
Compute the area of the lot ABCD in square meters.
1,315.74 m^2
Set 4 Problem 42: A road pavement has modulus of elasticity equal to 170 MPa and whose subgrade has a modulus 35 MPa. What is the stiffness factor of the pavement?
0.59