An aircraft was flying height of 25000 feet above the ground and takes a vertical aerial photograph of an object which is 30 meters height. The image of the object is at a distance of 6 inches from the nadir point find the relief displacement ?

Q: Q2) It is required to measure the distance from A to C which was obstructed by a building (see the…

A:

Q: Which of the following mistakes was made by a measurement team trying to take a length measurement…

A: Solution: The correct option to the above given question is "option a". i.e Horizontal error

Q: What is the result when the sum of the two values does not equal 360°?

A: Compass is used by surveyors to determine the direction of point or line. Compass points to magnetic…

Q: Question 4 a) Determine the rise in water level h as a result of surface tension between two glass…

A:

Q: What are the disadvantages or limitations to the use of dilatometer equipment?

A: The flat plate Dilatometer test (DMT) is an in-situ test device with specific advantages that can be…

Q: On a vertical photograph of flat terrain, section corners, which are a nominal 1-mi apart, appear a…

A: Part A :- d= 3.319 in.f= 3.5 in.Part B :-d= 68.14mm, f= 156.4mm

Q: A stone is dropped from a captive balloon at an elevation of 1000 ft. Two seconds later, another…

A: The given data is shown below: Elevation=1000 ftVelocity=248 ft/s

Q: 3. Calculate the moment of inertia of the shaded area about the x and y axes. 100 + 100 50 50 -75 75…

A: Concept Here we will use parallel axis theorem to calculate the moment of inertia.

Q: 3. Calculate the moment of inertia of the shaded area about the x and y axes. 100 + 100 50 50 -75 75…

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Q: Describe about the Dilatometer Method.

A: The Flat Dilatometer Test (DMT) is an in-situ test technique for determination of  fine-grained soil…

Q: What will be the metacentric height of a rectangular block having dimension 6 × 3 × 1.5 m if the…

A: Given - Dimention of rectengular block = (6×3×1.5) m Submerged height = 0.8 m To find - The…

Q: Micrometer caliper have more accurate measurement than Vernier Caliper?

A: The dimensions measured internally, externally and the depth when measured with help of two set of…

Q: A circular water tank with a diameter of 10 m and with uniform cross section , some angles…

A: Diameter of circular tank = 10m MB is at the center of bottom base. Zenith angle = 1400

Q: Using Double Integration Method for the deflection of beams analyze the given structure below.…

A:

Q: Linear measurement can be measured through either direct method, indirect method, or electronic…

A: Well As we know that, In the surveying,Linear measurements can be determined by using any of 3…

Q: 9x 1010 Pa SITUATION 3: A vertical brass post is 3.75m long and has a diameter of 25 cm. If the…

A: Consider the given data Length of the post=l=3.75Dia of the post=25 cm=0.25 mArea of…

Q: 240 N block is set on a 20 degrees inclined plane with a coefficient of friction 0.30. Find  A) The…

A:

Q: Which of the following would produce the greatest error when taping a distance of 100' with a steel…

A: Errors when taping a distance of 100 ft with a steel tape - a) When the tape is pulled with too…

Q: What will be the error in the measurement of dischrage if the error in the measurement of head in a…

A: Given, A 'V' notch, having error in head, dH/H =1%

Q: What are some potential sources of error in your measurements?

A: Measurement is the mathematical evaluation of the attribute of an item or event, which can be…

Q: Aerial photography was taken at a flying height of 1250m above average terrain. If the camera focal…

A:

Q: List the main component in dilatometer instruments

A: Following are the main component in dilatometer instrument.

Q: Why is a linear calibration curve important?  Couldn't interpolation be used to predict values…

A: Linear calibration curve can be described as a positive sign of assay performance within a validated…

Q: A subtense bar 2 meters long is set up near the middle of traverse line MN. At M, the angle…

A: Given  Subtense bar us 2 metres Angle Subtended at M and N is 30'5" and 63'15" respectively…

Q: Briefly explain the drawback of plate earthling in system earthing.

A: Electrical earthing is the practise of transmitting the quick discharge of electrical energy with…

Q: Define the term Seismic Refraction.

A: At layer interfaces, the seismic signal is reflected back to the surface, and noted at distances…

Q: What are stability and normality tests?

A: Normality: It is defined as the state of the data distribution that will occur as a normal…

Q: Two towers, A and B, standing horizontal ground, vertically on a

A:

Q: The distance measurement method

A: There are several methods available for measuring Horizontal distance. Some of them are:   Chain…

Q: How to get the corrected meniscus value?

A: The suspension used in Hydrometer test is opaque, thus the observations are taken at the top of the…

Q: A distance of 17.44 m is measured with a tape. During measurement, the other end was discovered to…

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Q: a. Two points A and B (distance =100m) were nominated at the field and Two points A and B (distance…

A: The staff readings at point A and point B are given in the above table.The leveling instrument is…

Q: Prove that the scale ratio for discharge for a distorted model is given as pavietos adr Qp Qm = (L₁)…

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Q: QUESTION 13 The readings shown below were taken to find the height of A, B, C, D, E, F, G and H. a)…

A: To Determine :- a) The adjusted reduced levels for all the pegs. b) The difference of height between…

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.