Fill in the blanks /identification: 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 format should by like this 1:500) A Calculate the maximum photographic scale B. Calculate the minimum photographic scale C. Calculate the average photographic scale

Fill in the blanks /identification: 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 format should by like this 1:500) A Calculate the maximum photographic scale B. Calculate the minimum photographic scale C. 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

On a vertical photograph of flat terrain, the scaled distance between two points is ab. Find the average photographic scale along ab if the measured length along the same line is AB on a map plotted at a scale of Smap for the following data. ab=1.66in.; AB=4.56in.; Smap=1:9600 (Express your answer in feet to four significant figures.) ab=116.04mm; AB=2.23mm; Smap=1:24,000 (Express your answer to three significant figures.)
Which method should a topographer use to measure distance using the method in the image ? B 34 - k k GÖL a) upright method O B) Angle method C) polar method D) Horizontal plumb method TO) rectification method
As soon ASAP.
Find image displacement.
In trying to minimise errors that come with using a tape in linear measurements, Mapalo suggested to the class that an EDM be used to compute the distance from BM1 to point A. A distance of 2122.241m was measured. Given that a frequency of 1.4985MHz was used, speed of light c = 299792458m/s, the refraction index of 1.0003 and that the effective wavelength measures to a centimetre, determine the phase measurement (i.e. Phase Distance and the corresponding Phase angle)
(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 primary aims of field surveying Select one: a. -to find out Absolute direction b. -to find out the Relative angles of lines c. -to find out Absolute angles d. - none of the answers
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.
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
Surveying
Q- A photographic survey is carried out to a scale of 1: 20000. A camera with a wide angle lens of f = 170 mm was used with 25 cm × 25 cm plate size for a net 65% overlap along the line of flight. What is the error in height given by an error of 0.15 mm in measuring the parallax of the point ?
Discuss briefly the advantages of plane table survey.