There are two points, A and B, whose elevations above datum are h=1380 ft and hg = 930 ft and whose images a and b on a vertical photograph have photo coordinates za = 2.95 in., y = 2.32 in.. =-1.64 in., and y=-2.66 in. The camera focal length was 152 4 mm and the flying height above datum 7800 ft. ▾ Part A On the same photograph, an image d of a third point D appears. Its elevation is hp 1290 ft and its photo coordinates are Express your answer to four significant figures. ΜΕ ΑΣΦ area= Submit Provide Feedback Request Answer Ć -2.72 in. and y-3.09 in. Calculate the area, in acres, of triangle ABD Next >

There are two points, A and B, whose elevations above datum are h=1380 ft and hg = 930 ft and whose images a and b on a vertical photograph have photo coordinates za = 2.95 in., y = 2.32 in.. =-1.64 in., and y=-2.66 in. The camera focal length was 152 4 mm and the flying height above datum 7800 ft. ▾ Part A On the same photograph, an image d of a third point D appears. Its elevation is hp 1290 ft and its photo coordinates are Express your answer to four significant figures. ΜΕ ΑΣΦ area= Submit Provide Feedback Request Answer Ć -2.72 in. and y-3.09 in. Calculate the area, in acres, of triangle ABD Next >

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Photogrammetry

Photogrammetry is a technology of taking measurements of physical objects present in the environment, using photographs. It includes the process of recording and analyzing a three-dimension image in the two-dimension form. Photogrammetry was invented around 150 years ago in 1851 by Aimé Laussedat, he was also known as the father of photogrammetry, but this method was not in use until 50 years after its invention. This method was first used in Germany by Dr. Albrecht Meydenbauer in 1893 who was the director of the Royal Prussian Photogrammetric institute founded by him.

Question

There are two points, A and B, whose elevations above datum are h4 = 1380 ft and hp = 930 ft. and whose images a and b on a vertical photograph have photo coordinates a = 2.95 in.. y = 2.32 in. z = -1.64 in., and 3 = -2.66 in. The camera focal length was 152.4 mm and the flying height above
datum 7800 ft.
Part A
On the same photograph, an image d of a third point D appears. Its elevation is hp 1290 ft and its photo coordinates are zd=2.72 in. and yu = 3.09 in. Calculate the area, in acres, of triangle ABD
Express your answer to four significant figures.
ΤΕΙ ΑΣΦ
area=
Submit
Provide Feedback
Request Answer
^
C PEX ?
ac.
Next >

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