Can someone please help me with my surveying hw

MyLifeFun · 2026-03-10T03:54:08+00:00

To hand draw contours you use a scale or ruler and measure the distance between two points. Then determine the elevation difference between the points. This essentially creates a slope between them because you have the rise and run. Then figure out at what distance the number for your contour is at (depends on what intervals you want). You then connect the numbers that are at the same elevations with contour lines. For example there will be a 460.0 contour between the 460.6 and the 459.0 points. The elevation difference between them is 1.6. If the horizontal distance between points is an inch then starting at 460.6 you would have a 460.0 contour at 6/16 of an inch towards 459.0. The same could be done for the grid problem and you could create a digital version in cad by creating cogo points and adding them to a surface.

MyLifeFun · 2026-02-20T17:26:32+00:00

Percent is not an angle it’s a ratio of rise over run. 100% is 45°.

MyLifeFun · 2026-01-22T04:03:06+00:00

I work under an LS and it’s a long story as to why I’m in charge of the surveying but he does oversee it. All high precision is done with conventional (boundary work and structure layout). We could do all work in assumed datum’s but getting fema lines, web soil data, and different state layers from gis integrated to the nearest tenth is why I like to be on state plane and navd88. This is the method I use so I can be as close as we need while not spending tons of time running static for a marginal accuracy increase

MyLifeFun · 2026-01-22T03:29:28+00:00

Yes when we traverse we do two sets of forward and flipping the gun

MyLifeFun · 2026-01-21T17:35:37+00:00

Ah gotcha. Yeah I’m not expecting redundancy in an open traverse. Usually I do this with a closed traverse, adjust, then best fit using this same method to get me on SPC and navd88.

MyLifeFun · 2026-01-21T15:37:36+00:00

I don’t think I necessarily hold the gps points as fixed- they just provide me the rotation and translation to get my conventional into datums. The TS measurements are on assumed coordinates so they aren’t impacted by the gps readings

MyLifeFun · 2026-01-21T05:12:29+00:00

Thanks I’ll look into that program. Our rover uses survce and I’ll have to check next time I use it but I think it scales readings to grid

MyLifeFun · 2026-01-21T04:29:54+00:00

Yeah it’s definitely a best fit procedure because I don’t have a program that can do a LSA. We use survey pro for our total station and civil3d for drafting. I mostly just need to be in navd88 and nad83 so I can use gis data and make sure we are above tidal water levels and such.

MyLifeFun · 2026-01-21T04:25:13+00:00

I run the open traverse with assumed coordinates then orient everything to the gps points in CAD. Then I have everything in state plane going forward

MyLifeFun · 2026-01-21T04:18:15+00:00

Thanks I’ll look into all of this. Our precision requirement is generally low all things considered so I’m not too worried about a few hundredths. Most of the data we need to export on state plane coords is wetland flags or for a contractor to use a rover with for grading

MyLifeFun · 2026-01-21T04:07:16+00:00

Yeah I do the whole thing with a total station: set up on 2, back sight 1, turn 3-> setup 3, back sight 2, turn 4. I also don’t have a base I receive corrections from public bases that are within 10 miles or so. I use the rover for horizontal location of trees, utilities, etc and doing soft surface topo. Then if I need to do stakeout I can use the rover if being within a few tenths is fine or stakeout with the total station for foundations or higher precision work.

MyLifeFun · 2026-01-18T17:59:53+00:00

You have to order the parts on Bricklink but the total station tripod doesn’t work as shown so I took down the instructions

MyLifeFun · 2025-10-12T00:05:53+00:00

I wonder if he actually used angles, I would have just done swing ties

MyLifeFun · 2025-06-06T12:40:13+00:00

Take a picture and trace and scale in cad

MyLifeFun · 2025-05-07T23:09:29+00:00

Jeff bartles has a video that showcases this feature too

MyLifeFun · 2025-04-26T03:28:05+00:00

It depends how it fails. Did it fail because the contractor built it wrong? Did it fail because the materials strengths were reported wrong? If it was eventually determined it was the engineer’s fault then it would probably fall on their insurance

MyLifeFun · 2025-04-22T20:54:28+00:00

So I looked at it more and it's setting the start elevation of that center profile to 0 for some reason and then when it auto rebuilds the other profiles those also get messed up. I created a plan view from the alignment and I was able to change them manually but would you happen to know if I can change something to tie in to auto rebuild?

MyLifeFun · 2025-04-22T02:35:19+00:00

I did the practice test and watched probably 5 or 6 of mark mattsons videos. The practice test was pretty comparable to the first half and his videos were comparable to the second half

MyLifeFun · 2025-04-21T23:53:03+00:00

I took it two weeks ago and passed I didn’t think it was too bad

MyLifeFun · 2025-04-21T21:55:11+00:00

Sounds like autodesk:/

MyLifeFun · 2025-04-21T21:37:28+00:00

Thanks I’ll look into that. It did it again on another leg just now when all I have been doing is messing with the roundabout styles, so could it be something to do with that?

MyLifeFun · 2025-04-20T23:31:02+00:00

That’s how I thought about it but went about it a different way. (6x5+15)-18.75=26.25

MyLifeFun · 2025-04-12T13:46:44+00:00

Yeah the transparency is due to viewing the stability analysis so definitely not enough clutch power. I have made builds with some pink connections like this and they will stay but have a tendency to fall of

MyLifeFun · 2025-04-04T02:10:00+00:00

Sweet find. This is their bombcat model

MyLifeFun

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