Why is a 2-m rod recommended for the roving receiver? O Canopy obstruction can be an issue when performing a kinematic survey. Thus, the antenna is often mounted on a fixed-height rod that is 2 m in length to stay below the canopy. O Shorter rods limit the range of the survey while longer rods are too unweildy for operators to accurately set up. O The 2-m standard was adopted as convention because it is close to the height of the average human (operator). O The operator's body can be an obstruction when performing a kinematic survey. Thus, the antenna is often mounted on a fixed-height rod that is 2 m in length to avoid operator obstructions. Submit Request Answer Return to Assignment Provide Feedback

Why is a 2-m rod recommended for the roving receiver? O Canopy obstruction can be an issue when performing a kinematic survey. Thus, the antenna is often mounted on a fixed-height rod that is 2 m in length to stay below the canopy. O Shorter rods limit the range of the survey while longer rods are too unweildy for operators to accurately set up. O The 2-m standard was adopted as convention because it is close to the height of the average human (operator). O The operator's body can be an obstruction when performing a kinematic survey. Thus, the antenna is often mounted on a fixed-height rod that is 2 m in length to avoid operator obstructions. Submit Request Answer Return to Assignment Provide Feedback

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

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.

Question

- Part A
Why is a 2-m rod recommended for the roving receiver?
O Canopy obstruction can be an issue when performing a kinematic survey. Thus, the antenna is often mounted on a fixed-height rod that is 2 m in length to stay below the canopy
O Shorter rods limit the range of the survey while longer rods are too unweildy for operators to accurately set up.
O The 2-m standard was adopted as convention because it is close to the height of the average human (operator).
O The operator's body can be an obstruction when performing a kinematic survey. Thus, the antenna is often mounted on a fixed-height rod that is 2 m in length to avoid operator obstructions.
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Part A
What are the geocentric coordinates in meters of a station which has a latitude of 48°22′37.79300" N, longitude of 118°42′52.92539" W, and height of 296.855 m?
Express your answers, separated by commas, to three decimal places.
(XA, YA, ZA) = (
ΠΕ ΑΣΦ
VO
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↓↑
vec
?
) m, m, m

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In a leveling work, sum of the Back Sight (B.S.) and Fore Sight (F.S.) have been found to be 3.085 m and 5.645 m respectively. If the Reduced Level (R.L.) of the starting station is 100.000 m, the R.L. (in m) of the last station is
A total station was setup on top of point A. The following observations have been recorded to point B in reflector-less mode: Occupied Point IH Target (m) Point Azimuth 0 F " 0 Vertical Angle . 14 SD (m) A 1.36 C 214 29 37 -4 19 56 208.527 If the coordinates of point A is (E-1659.637, N-1161.376, H-310.472). What is the Northing of point C? Round your answer to 3 decimal places. Do not add units to your answer (e.g. 100.351 NOT 100.351m) Your Answer:
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Please help with b, i & ii The slope distance between two stations A and B measured with EDM when corrected for meteorological conditions and instrument constants, is 113.893 m. The heights of the instrument and reflector are 1.739 m and 1.839 m, respectively, above the ground. To measure the vertical angle a theodolite was set up at A, 1.665 m above the ground and a target at B having height above the ground as 1.632 m. The measured angle above the horizontal was + 4°22′18″. Determine a. The horizontal length of the line AB. b. To what precision the slope angle be measured: i. if the relative precision of the reduced horizontal distance is to be 1/100000. ii. if the reduced horizontal distance is to have a standard error of ± 1.8 mm.