Table of Contents
How do you find latitude and departure in surveying?
The departure of a line is its projection on the east-west meridian and is equal to the length of the line times the sine of its bearing. The latitude is the y component of the line (also known as northing), and the departure is the x component of the line (also known as easting).
How do you plot latitude and departure?
Latitude is the north-south component of a line; departure the east-west. North latitudes are positive, South are negative; similarly East departures are positive, West are negative….1. Definition; Equations.
Line A to B | Line B to A |
---|---|
(a) | (b) |
Figure D-6 Reverse Latitude and Departure |
What is Survey latitude?
latitude—1Angular distance measured on a meridian; now, distance, north or south, from the equator. latitude—In surveying, the orthographic projection of a course upon the north-south axis of the survey. It is equal to the length of the course multiplied by the cosine of the bearing.
What is departure in navigation?
Departure is the distance along a parallel between two points. Whereas a degree of latitude is always the same distance, a degree of longitude is different in length at different latitudes. In practice, this distance is usually given in nautical miles.
How do you teach lines of latitude and longitude?
Tell students that the lines running across the page are lines of latitude, and the lines running up and down the page are lines of longitude. Latitude runs 0–90° north and south. Longitude runs 0–180° east and west. Have students write those labels on the maps.
How many km is a degree of latitude?
111 kilometers
A degree of latitude, one degree north or south, is about the same distance anywhere, about 69 miles (111 kilometers).
What is the distance between 2 latitudes?
Lines of latitude are called parallels and in total there are 180 degrees of latitude. The distance between each degree of latitude is about 69 miles (110 kilometers).
What is the departure of a line of latitude?
The departure of a line is its projection on the east-west meridian and is equal to the length of the line times the sine of its bearing. The latitude is the y component of the line (also known as northing ), and the departure is the x component of the line (also known as easting ).
How do you balance latitudes and departures of a traverse?
Balancing the latitudes and departures of a traverse attempts to obtain more probable values for the locations of the corners of the traverse A popular method for balancing errors is called the compassor theBowditch rule
How do you calculate corrections for latitude and departure?
In order to calculate corrections for latitude and departure there is a simple formula called the Compass (or Bowditch) Rule, which is used when angles and distances are measured with the same relative accuracy.
How do you find the latitude of a line?
The latitude of a line is its projection on the north-south meridian and is equal to the length of the line times the cosine of its bearing. The departure of a line is its projection on the east-west meridian and is equal to the length of the line times the sine of its bearing.