An automatic level with an internal focusing telescope was set up somewhere at mid-length of a long-span steel bridge. The rod readings tabulated below were observed on a stadia rod held successively at the vicinity of the concrete abutments in the southern and northern approaches of the bridge. If the stadia interval factor of the instruments is 98.5, determine the length of the bridge.

Q: The vertical angle to the top of the New CSU Library Building ("point B") is observed by a BSGE…

A: Solution given in next step

Q: 7. A horizontal collimation test is performed on an automatic level. With the instrument setup at…

A:

Q: During testing of a dumpy level, the following observations were taken:- Instrument at A B Staff…

A:

Q: The sum of positive departures exceeds that of the negative departures by 0.47 meter. The sum of the…

A: Given data in question  ∑D = 0.47 m ∑L=-0.67 m To find out  Linear error of closure

Q: 6. There is a signaling tower on the top of a hill. In order to determine the elevation of the tower…

A:

Q: Using a 1 second theodolite the following clockwise angles were measured in a closed traverse. What…

A: The traverse angle is given as follow: 163° 27' 36" 324° 18' 22" 62° 39' 27" 330° 19' 18" 181° 09'…

Q: In order to obtain the stadia interval factor of a certain instrument, the stadia rod was held…

A: Solution Find the stadia interval factor  station A : stadia interval, s = 0.251 m…

Q: . An angle was measured six times, the observed values being 49°23'00", 49°23'20", 49°22'40",…

A:

Q: The horizontal axis of a transit was inclined at 7’ with the horizontal due to non-adjustment. The…

A:

Q: In determining horizontal angle between two points, you lock in and set your horizontal angle to…

A:

Q: .(b) If the sensitivity of the bubble tube of a level is 30 of are per division, determine the…

A: Given data , Sensitivity of the bubble tube = 30" m= 1 Sensitivity of the bubble tube =

Q: The following readings were taken in sequence during a leveling job: Remarks BM1 R.L. 101.335 Peg A…

A: To prepare standard form of booking these readings and reducing using rise and fall method.

Q: A trigonometric leveling was employed to determine the elevation of CGY-2022. The instrument was…

A: To find Elevation of CGY 2022

Q: Explain the procedure in Testing and Adjusting the line of Sight of a Tilting Levels.

A: Inside the tilting level, the telescopic, together with the primary bubble tubing, maybe tilted…

Q: If you need high precession you must increase the number of observations  Select one: True False

A: to find  you need high precession you must increase the number of observation

Q: 50KN 31 2m B 1.51 A 2m 31 25kN/m 2m ////////// 6m

A:

Q: A trigonometric leveling was employed to determine the elevation of CGY-2022. The instrument was…

A: To find  Earth's curvature and atmospheric refraction correction.

Q: Briefly describe the principles on which seismic refraction studies for subsurface explorations are…

A: Seismic Refraction Studies:

Q: In order to measure a distance between two points by using a Electromagnetic Distance Measurement…

A:

Q: In order to transfer reduced level across a canyon, a reciprocal leveling campaign was conducted.…

A:

Q: The sum of negative departures exceeds that of the positive departures by 0.47 meter. The sum of the…

A:

Q: A flagpole appears in two successive photographs taken at an altitude of 2,000 m above datum. The…

A: Given that :- Focal length of the camera = f = 120 mm length of the air base = B  = 200 m Parallax…

Q: Using a 1 second theodolite the following clocl traverse. What is the angular closing error and 62°…

A: The traverse angle is given as follows: 163°27' 36" 324°18' 22" 62°39' 27" 330°19' 18" 181° 09' 15"…

Q: PLEASE FIND SOLUTION THAT WILL COME UP WITH THE SAME ANSWER The two-peg test is used to determine…

A: Surveying is the technique of establishing the relative locations of various things on the earth's…

Q: A slope distance of 845.321 m was observed between two stations with EDM instruments having…

A: D=845.321 * 1000 mm Ei=1.9mm Ec=1.2mm Er=2mm

Q: Compute the value of Ely at midspan between supports of the overhanging beam shown. 1000 lb 400…

A:

Q: While leveling across a river, the staves readings held at (R) and (S) from the instrument stationed…

A: Reciprocal levelling is used to determine the true difference in elevations of two points that are…

Q: er. Linear error of closure is:

A:

Q: (Alternate Peg Method) In the two-peg test of a dumpy level, the following observations are taken:…

A:

Q: A reciprocal leveling is observed across a wide river and the reciprocal level readings were taken…

A: Given:- The reciprocal level readings were taken between points A and B  When the instrument is at…

Q: Compute the adjusted deflection angle at station D as shown.

A: Solution: The given table: Station Deflection Angle A 30°26'00''L B 66°02'30'' L C…

Instruments for Surveying

Surveying is the practice that determines the relative three-dimensional positions of many different points on the earth’s surface. There are various instruments used in Surveying like Theodolites, Total station, Tripod stands, Plane table, etc. for measuring horizontal angle, vertical and sloping angle, which are very useful for giving accurate and precise measurement.