Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 14, Problem 11P
To determine
The elevation of the two points A and C and the distance between them.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A section line AB appears to be 10.16 cm on a photograph for which the focal length
is 16 cm. The corresponding line measures 2.54 cm on a map, which is to a scale
1
The terrain has an average elevation of 200 m above mean sea level. The flying
50,000
altitude of the aircraft above mean sea level during photograph will be
(a) 1800 m
(c) 2200 m
(b) 2000 m
(d) 2400 m
q22
On a vertical photograph of flat terrain, section corners, which are a nominal 1-mi apart, appear a distance d apart. If the
camera focal length is f. compute flying height above average ground in feet for the following data:
Part A
d=3.289 in.; f=3-1/2 in.
Express your answer in feet to four significant figures.
H=
Part B
ΑΣΦΗ Π It veci 6 A
H=
ΠΗΓΙΑΣΦ
d=68.14 mm; f = 152.4 mm
Express your answer in feet to five significant figures.
ΔΙΑΣΦΗ
It Ivec
F
?
?
ft
ft
An image of a hilltop is 87.5 mm from the centre of a photograph. The elevation of the hill is
665 m and the flight altitude is 4660 m from the same datum. The image displacement due to
elevation of the hill will be
[Take f= 210 mm]
Chapter 14 Solutions
Traffic and Highway Engineering
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Aerial photography was taken at a flying height of 1250m above average terrain. If the camera focal plane dimensions were 23cm by 23cm, the focal length is 153 mm, what is the ground distance? The spacing between adjacent flight lines is 1370 m, what is the percent side lap?arrow_forwardOn a vertical photograph of flat terrain, section corners, which are a nominal 1-mi apart, appear a distance d apart. If the camera focal length is f, compute flying height above average ground in feet for the following data: Part A d = 3.319 in.; f = 3-1/2 in. Express your answer in feet to four significant figures. H = Submit Part B 15| ΑΣΦ H = Request Answer d = 68.14 mm; f = 156.4 mm Express your answer in feet to five significant figures. Submit vec 5 IVE ΑΣΦ41 | vec Request Answer ? ? ft ftarrow_forwardAn upright aerial photograph is taken using a camera focal length of 150.7 mm, where there are 2 points, namely a and b, whose photo coordinates have been calculated with the results as in the following.Xa = 18.4 mm ; Yes = -61.4 mmXb = 110.1 mm ; Yb = -21.2 mmFurthermore, the height of the two points is calculated in the field, namely point A (437.5 m) and point B (444.9 m). If the distance between points A and B is 585.1 meters, what is the flying height of the plane when shooting?arrow_forward
- What is the aeroplane flying height to obtain the average scale of the photograph equal to 1/7200? (Ground surface elevations vary from 160 m to 430 m and focal length of the camera lens is 153 mm)arrow_forward(e) An area of 150 km × 105 km is to be surveyed using aerial photogrammetry. From the data given below determine number of photographs required to cover complete area; height of flight, spacing of flight lines, ground exposure distance and exposure interval: Size of photograph 23 cm x 23 cm Average scale of photograph = 1 : 25000 Average elevation of terrain = 335 m Longitudinal overlap 65% Side overlap = 28% = - Ground speed of aircraft = 270 km/hr Focal length of camera = 200 mm 0.5 sec Least count of intervalometer =arrow_forward1. Compare and contrast: a Active vs. Passive Remote Sensing b. Linear swath vs. Optical mechanical scan c. Internal vs. External parameters d. Perspective vs. Orthographic projections e. Single Image Photogrammetry vs. Stereopairsarrow_forward
- A vertical aerial photograph was taken from a flying height of 3200 meters above datum with a camera having a focal length of 210 mm. The highest, lowest and average terrain points appearing in the photograph ae 1730 meters, 995 meters and 1310 meters, respectively. (Note: The scale value should be in this kind of format, 1:250) 1. Calculate the maximum photographic scale| 2. Calculate the minimum photographic scale 3. Calculate the average photographic scalearrow_forwardIf the size of the ground area is 6 km x 3 km and the corresponding photo size in the aerial photograph is 30 cm x 15 cm, then the scale of the photograph is 1: (in integer)arrow_forwardThe objective of Photogrammetry is to:arrow_forward
- Difference of Horizontal Angle and Vertical Angle in Surveyingarrow_forwardDetermine the horizontal distance between two points A and B whose elevations above datum are hA = 1840 ft and hB = 1425 ft and whose images a and b on a vertical photograph have photo coordinates xa = 2.95 in., ya = 2.32 in., xb = -1.64 in., and yb = -2.66 in. The camera focal length was 152.4 mm and the flying height above datum 7900 ft . Express your answer in feet to four significant figures.arrow_forward1 1. Find the length of a road if the ground coordinates at its beginning are ( 1000m, 2000m) and the coordinates at the end point measured on an aerial photo are ( 105 mm, 133 mm). knowing that the focal length of the applied camera is 14 cm, the flight height over the end point of the road in meters is equal to "2004" and the end point of the road lies at the same level of the sea.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning