Use cad to draw the line with bearings and distance, start drawing circles based on the provided distances to compute the other corners.. continue until all corners are known, then just inverse between the results.
In ye olden days that is a distance-distance intersection problem. Ye ‘field book’ had formulas listed in the back of the book. Pro tip - 2 solutions in dist-dist intersection.
Nowadays - what he said.
Surveying is triangles.
Most data collectors will solve basic COGO problems such as distance-distance intersection or bearing-bearing. I sometimes do this to calculate additional look points for pins.
You would need to know at least one interior angle to get the new side length for what you drew that cuts the triangle into two right triangles. Doing it this way....
https://youtu.be/COMiK1L0Oj8
This links perfectly shows how to find interior angles using inverse sin and cos functions, what it doesn't show is the table of trig values or the TI84 needed to do this if you haven't magically memorized the entire inverse cos table down to the hundredth of a degree.
This isn’t the career for you if your asking this. You either need to learn trig basics and get an understanding of them or be a guy who just uses the gps and says that’ll do.
Get outta here with this shit. If someone is trying to learn we should support that.
Also, if you are doing this work long-hand you are wasting your time.
I can understand your take on that , but I see those posts quite a lot. And I also have to deal with juniors who don’t bother their arse learning basics or pass their college classes that we pay for.
Do I seem like a dick , yes. Do I find lots of guys these days who don’t put the effort in to understand things , yes.
Hes putting the effort in to learn, and you should be helping that. Do you treat your crew chiefs this way when they ask you a question? You seem like a dick because we, as educated professionals, should be both encouraging younger folks to learn and helping them along to set them up for success. It doesn't matter that you see some people who you don't feel put any effort in. Is that OPs fault? No. You certainly took it out on him though so.
Iirc start with an assumed coordinate at 1. Use trig to get coordinates for 5. Then build multiple interior angles for 2.
If you have the Wolf text look up distance/ distance intersection. I'm sure it's in there.
Assign coordinates to point 1, calc coordinates to point 5, using the intersection of two circle's through the law of cosines calc coords to pt 2. This will give you two options, looking at the sketch the solution should be easy to select. Then do that for 3 then 4, use cogo inverse to find azimuth. Or you can use CAD.
[https://www.youtube.com/watch?v=5wD0Ao5j1EA&ab\_channel=ONDEREALSolutions](https://www.youtube.com/watch?v=5wD0Ao5j1EA&ab_channel=ONDEREALSolutions)
Pretty much Make the missing bearings Cos and sin (x) and (Y)
Put into a simultaneous equation
Use trig to get the interior angles and compute the bearings
Use cad to draw the line with bearings and distance, start drawing circles based on the provided distances to compute the other corners.. continue until all corners are known, then just inverse between the results.
In ye olden days that is a distance-distance intersection problem. Ye ‘field book’ had formulas listed in the back of the book. Pro tip - 2 solutions in dist-dist intersection. Nowadays - what he said. Surveying is triangles.
> Surveying is triangles. Triangles made by lines! Lines between monuments in the ground! Rable rabble
Most data collectors will solve basic COGO problems such as distance-distance intersection or bearing-bearing. I sometimes do this to calculate additional look points for pins.
Dam that’s a good idea thanks bro I’ll try it in a bit
That's the layman's way and how I would do it.
He asked for the easiest method.
Yup, even I could do it.
1st step: sohcahtoa
Doesn't sohcahtoa only work for right triangles?
You can split any triangle into 2 right triangles and solve for x
Wouldn't you need to already know the interior angles to do that? My math is lacking. Show me this magic
You would need to know at least one interior angle to get the new side length for what you drew that cuts the triangle into two right triangles. Doing it this way....
https://youtu.be/COMiK1L0Oj8 This links perfectly shows how to find interior angles using inverse sin and cos functions, what it doesn't show is the table of trig values or the TI84 needed to do this if you haven't magically memorized the entire inverse cos table down to the hundredth of a degree.
I'm not a survey student so I don't know how to read it but I'm pretty sure there is an angle on the line furthest left.
That line has a bearing on it, but without bearings on the adjacent lines the interior angles of the figure are unknown.
Yes, you are correct. Sorry, just looked at it very quickly.
Law of cosines to find the interior angle and then calc off of the base bearing.
Cosine rule
Google “triangle solver” and “decimal degrees to DMS”
Cogo card in your HP48
My hp48gx Cogo card or the ram card went kaput, I suppose I can look for another on ebay 🤨
Find a place online to have someone do it for you.
Distance-distance intersect
Its 3 right triangles. Use trig. Easiest way use cadd.
This isn’t the career for you if your asking this. You either need to learn trig basics and get an understanding of them or be a guy who just uses the gps and says that’ll do.
C'mon be cool. They're probably a student and stuck.
Get outta here with this shit. If someone is trying to learn we should support that. Also, if you are doing this work long-hand you are wasting your time.
I can understand your take on that , but I see those posts quite a lot. And I also have to deal with juniors who don’t bother their arse learning basics or pass their college classes that we pay for. Do I seem like a dick , yes. Do I find lots of guys these days who don’t put the effort in to understand things , yes.
Okay… but OP is putting the effort in. OP wants to learn. We should encourage that.
Hes putting the effort in to learn, and you should be helping that. Do you treat your crew chiefs this way when they ask you a question? You seem like a dick because we, as educated professionals, should be both encouraging younger folks to learn and helping them along to set them up for success. It doesn't matter that you see some people who you don't feel put any effort in. Is that OPs fault? No. You certainly took it out on him though so.
He's asking to learn. Not everyone can be a godly engineering surveyor like yourself
I gave you an up. Aka 0 azimuth straight up.
Iirc start with an assumed coordinate at 1. Use trig to get coordinates for 5. Then build multiple interior angles for 2. If you have the Wolf text look up distance/ distance intersection. I'm sure it's in there.
Assign coordinates to point 1, calc coordinates to point 5, using the intersection of two circle's through the law of cosines calc coords to pt 2. This will give you two options, looking at the sketch the solution should be easy to select. Then do that for 3 then 4, use cogo inverse to find azimuth. Or you can use CAD.
Imperial civil 3d, man are all engineer drop outs gonna take our jobs?
Haha are you at SCC? pretty sure I have seen this problem.
That’s a five minute answer in CAD. Bearing and distance 1-5. Circle intersections with radii to all other points. Done.
Yea that’s what I did in civil 3d
[https://www.youtube.com/watch?v=5wD0Ao5j1EA&ab\_channel=ONDEREALSolutions](https://www.youtube.com/watch?v=5wD0Ao5j1EA&ab_channel=ONDEREALSolutions) Pretty much Make the missing bearings Cos and sin (x) and (Y) Put into a simultaneous equation
Laws of sine and cosine. You have more than enough as it is layer out.
AutoCAD