The direct and reversed zenith angles observed by a theodolite are 56° 00′ 00" and 303° 00′ 00″, respectively. What is the vertical collimation correction? (a) +1° 00′ 00" (b) -1° 00′ 00″ (c) -0° 30' 00" (d) +0° 30' 00"

The direct and reversed zenith angles observed by a theodolite are 56° 00′ 00" and 303° 00′ 00″, respectively. What is the vertical collimation correction? (a) +1° 00′ 00" (b) -1° 00′ 00″ (c) -0° 30' 00" (d) +0° 30' 00"

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

State Plane Coordinate Systems

The state plane coordinate system (SPCS or SPS) is a collection of 124 coordinate systems or geographic zones prepared for particular regions of the U.S. Every state consists of one or more than one state plane zone, the boundaries of which generally follow the county lines. Inside the U.S., there are 110 zones in total, 10 more zones in Alaska, 5 in Hawaii, and 1 for Puerto Rico and US Virgin islands. The system is extensively used for geospatial and geographic data assembling by the state and local governments.

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The direct and reversed zenith angles observed by a theodolite are 56° 00′ 00" and
303° 00′ 00″, respectively. What is the vertical collimation correction?
(a) +1° 00' 00"
(b) -1° 00' 00"
(c) -0° 30' 00"
(d) +0° 30′ 00″

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