Height of the instrument (HI): Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
(6 intermediate revisions by 3 users not shown) | |||
Line 1: | Line 1: | ||
[[Category:Glossary]] [[Category:Turf]] | [[Category:Glossary]] [[Category:Turf]] [[Category:Sportsturf]] | ||
1. In surveying, the sum of the benchmark elevation and a rod reading at the benchmark, from which all subsequent readings are subtracted to establish elevations. The benchmark elevation may be established from older surveys, or may be arbitrarily assigned to provide a consistent basis for comparison.<br> | 1. In surveying, the sum of the [[benchmark]] elevation and a rod reading at the benchmark, from which all subsequent readings are subtracted to establish elevations. The benchmark elevation may be established from older surveys, or may be arbitrarily assigned to provide a consistent basis for comparison.<br><br> | ||
http://surveying.structural-analyser.com/_internal/images/Book_constrSurv_00159_642x450.jpg<br><br> | |||
<br> | Assuming the height of the instrument is known, elevation is set by means of level instrument.<br> | ||
Source: http://surveying.structural-analyser.com/chapter10/<br><br> |
Latest revision as of 14:54, 5 October 2017
1. In surveying, the sum of the benchmark elevation and a rod reading at the benchmark, from which all subsequent readings are subtracted to establish elevations. The benchmark elevation may be established from older surveys, or may be arbitrarily assigned to provide a consistent basis for comparison.
Assuming the height of the instrument is known, elevation is set by means of level instrument.
Source: http://surveying.structural-analyser.com/chapter10/