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Help me understand Surveyor's Unit angles. Please.
For example, I have a site plan. the boundaries starting at 0,0 are as follows:
161.83' < N0d41'E - No problem
263' < S89d54'30"E - No problem
43' < S30dE - UH OH. This line should go down and to the right. Instead, it goes up and to the right. If I move the mouse curser to the right on the 0 angle, the line is drawn correctly. If I move the mouse curser to down at any angle, the line is drawn to the right and up. If I move the mouse curser to the up at any angle, the line is drawn correctly.
Why is this the case?
Edited to add the "d" in S30dE
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43' long starting from the south goes 30 degrees counter-clockwise to the east.
Line enter
@Anonymous<s30de
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Surveyor's Unit angles, also known as azimuth angles, are a way of representing directions or bearings in land surveying. They are typically expressed in degrees, minutes, and seconds (d° m' s"). In your example, the angles you provided are expressed in this format. Let's break down the angles to understand them better:
1. 161.83' < N0d41'E: This angle represents a bearing of N0°41'E. It indicates a direction that starts from the reference point (0,0) and goes towards the north at an angle of 0 degrees and 41 minutes east of north.
2. 263' < S89d54'30"E: This angle represents a bearing of S89°54'30"E. It indicates a direction that starts from the reference point and goes towards the south at an angle of 89 degrees, 54 minutes, and 30 seconds east of south.
3. 43' < S30E: This angle is a bit different and seems to be causing confusion. The format is slightly unusual, but it suggests a bearing of S30°E. This indicates a direction that starts from the reference point and goes towards the south at an angle of 30 degrees east of south.
Based on your description, it seems like the line representing "43' < S30E" is not being drawn in the expected direction. If you're using a CAD software or drawing tool, it's possible that there may be a misinterpretation or error in the software's handling of the angle.
One way to troubleshoot this issue is to manually draw the line using the correct bearing. For example, in this case, you would start from the reference point (0,0) and move in a direction 30 degrees east of south for a length of 43 feet. This can help ensure that the line is drawn correctly, even if the software is not interpreting the angle as expected.
If the issue persists, it might be worth double-checking the accuracy of the site plan or consulting with a professional surveyor who can provide further guidance on how to interpret and accurately represent the angles on the plan.
https://www.youtube.com/channel/UCclj8v9vHQiFa8_DriuAk3w
Please Mark the Post or Posts as Solution(s) to help others find the answer quickly.
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Confirm you have PLAN and UCS to WORLD, and try again.
Also, verify the "Clockwise" option in your Drawing Units is not checked.
Please select the "Accept as Solution" button if my post solves your issue or answers your question.
Emilio Valentin
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This problem happens when using the dynamic input.
If I use @Anonymous'<S30dE - it works
If I use <S30dE (enter) 43' - it works
I just don't understand why the direction I drag the mouse has an effect on which direction the line goes when giving it specific distance and angle. Or more specifically why it goes in the opposite direction of the direction I pull the mouse.
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Hello @ballch49ZUG
Here's a typical example illustrating how the distance and bearings work. Your mileage may vary.
Notes:
- The distance is always preceded by '@'
- The '<' sign always precedes the bearing.
- The bearing is typically sandwiched between the vertical bearing (N or S) and the horizontal bearing (E or W).
- The start and end points of a line segment might be reversed and can create confusion. If you rotate the line 180-degrees at its midpoint and move the line accordingly, you can correct the problem. Rotation like this will not change the line's length nor orientation with respect to the north pole and equator.
- Although the survey's POB (Point of Beginning) is fully described in the survey, the start and end point of each individual line segment is not mentioned in the metes and bounds.
- Many surveys are undertaken using hand-held, battery powered instruments.
- Although Bluetooth and mobile connections are becoming more common, data collected by hand-helds are typically uploaded to computers back in the office, which in turn, are compiled and downloaded for reports and to generate Cad drawings.
- It is the responsibility of the downloading program, not necessarily human input, to make downloads user friendly.
Chicagolooper
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ACAD 2019 PLAN and UCS to World
the start point and line list from a word processor as below
copy; LINE and paste on the command line, ENTER
The three lines are drawn correctly.
0,0
@161.83<n0d41'e
@Anonymous<s89d54'30"e
@Anonymous<s30de
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I appreciate everyone's response. Unfortunately, they don't really provide the answer I was looking for.
The consensus seems to be that when using Surveyor's Units for angles, the input must be proceeded by < for it to work properly. Just using the dynamic input in its default relative polar format does not give the results as anticipated. This is odd since it does work if using the "@" and "<" which are also inputs for relative coordinates.
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they don't really provide the answer I was looking for
You don't use a pair of pliers to do the hammer's job, and that's the answer.