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 scale

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 scale

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A drone is equipped with a small format digital camera that has an APS-H sensor (see image) and a focal length of f = 13 mm. The flying height H’ over an approximately flat terrain is 1500 m. Two stereopairs are to be captured with 65% overlap at the same flying height. See example image below. What is the area of overlap on the ground in square meters?
A vertical photograph of a flat area having an average elevation of 250m above mean sea level was taken with a camera of focal length 25 cm. A section line AB 300 m long in the area measures 15cm on the photograph; a tower BP in the area also appears on the photograph. The distance between images of top and bottom of the tower measures 0.5 cm on the photograph. The distance of the image of the top of the tower is 10 cm. The actual height of the tower is
Which of the following co-ordinates are not the same for all observers? options: Right Ascention Altitude Azimuth Declination
(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 =
The objective of Photogrammetry is to:
C) A 20-mile strip of terrain is to be photographed for highway mapping. The aerial camera to be used has a lens of focal length 12 in and takes 9×9 inches photographs. The ground elevation varies from a low of 800.00 ft to a high of 1050.00 ft above mean sea level. The plane has to make one flight line and the average width of the photographic coverage is to be 1650.00 ft. What will be the average scale of the photographs? What flying height, above mean sea level, should be used for this flight? If it is specified that the overlap (end lap) between photos be 60% and that 2 extra exposures be added at each end of the flight line, find how many photographs will be required.
A tower appears in two successive photo-graphs taken at an altitude of 4000 m above datum. The focal length of the camera is 160 mm. The length of the air base is 300 m. The parallax for the top and bottom of the pole are 72 mm and 63 mm respectively. The height of the top of the tower above its bottom is nearly 70m
1. 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. Stereopairs
5. A photograph with an average scale of 1:12,000 was taken using a camera with a focal length equal to 60 mm mounted to an aircraft flying at an elevation of 2 km above datum. What is the average elevation of the terrain in the image? If a feature in the image was of a lower elevation than the average, would the scale be larger or smaller?
Discuss briefly the advantages of plane table survey.
What error in horizontal angles is consistent with the following linear precisions?1>5000, 1>20,000, 1>50,000, and 1>100,000