# \#c3d **URL:** https://forum.dynamobim.com/tag/c3d/222.md [Latest](https://forum.dynamobim.com/latest.md) · [Categories](https://forum.dynamobim.com/categories.md) · [Tags](https://forum.dynamobim.com/tags.md) --- ## [Surface in Dynamo to Model Space](https://forum.dynamobim.com/t/surface-in-dynamo-to-model-space/113010)
**Author:** [@nguyenkhoiatwork](https://forum.dynamobim.com/u/nguyenkhoiatwork)\ **Replies:** 4\ **Last updated:** [November 10, 2025, 11:49pm UTC](https://forum.dynamobim.com/t/surface-in-dynamo-to-model-space/113010 "2025-11-10T23:49:26Z")
The task I am aiming at is to loft Lines to create a Loft Surface. In dynamo, my flow is like this: Select Objects → Object.Geometry → Surface.ByLoft → (The last node for exporting to Civil3D space) However, in all of… --- ## [Get Corridor sections properties](https://forum.dynamobim.com/t/get-corridor-sections-properties/109076)
**Author:** [@nkiakas](https://forum.dynamobim.com/u/nkiakas)\ **Replies:** 2\ **Last updated:** [March 26, 2025, 5:13pm UTC](https://forum.dynamobim.com/t/get-corridor-sections-properties/109076 "2025-03-26T17:13:17Z")
Good afternoon Does anyone know if there is any node to get geometric properties (station, length, end/start point…) of corridor sections (the magenta lines of the corridor). I guess as input will be the baseline of th… --- ## [Extract contour lines from a surface and then split them to Major/Minor Contour Lines](https://forum.dynamobim.com/t/extract-contour-lines-from-a-surface-and-then-split-them-to-major-minor-contour-lines/107545)
**Author:** [@nkiakas](https://forum.dynamobim.com/u/nkiakas)\ **Replies:** 5\ **Last updated:** [January 28, 2025, 10:36am UTC](https://forum.dynamobim.com/t/extract-contour-lines-from-a-surface-and-then-split-them-to-major-minor-contour-lines/107545 "2025-01-28T10:36:47Z")
Hello I tried to extract the contour lines from a surface to polylines, i did with the help of Surface.ContoursByInterval / Surface.ContourByRange. I want to go little bit further, and create two separate lists splitti… --- ## [Create Cogo Point Groups based on point descriptions imported from Excel file](https://forum.dynamobim.com/t/create-cogo-point-groups-based-on-point-descriptions-imported-from-excel-file/106784)
**Author:** [@nkiakas](https://forum.dynamobim.com/u/nkiakas)\ **Replies:** 1\ **Last updated:** [January 2, 2025, 12:59pm UTC](https://forum.dynamobim.com/t/create-cogo-point-groups-based-on-point-descriptions-imported-from-excel-file/106784 "2025-01-02T12:59:29Z")
Hello I am new in dynamo and while learning i am creating my own library of graphs. My task is to load an excel file, retrieve all data and create cogo points. Till this point achieved successful but this can be done … --- ## [Dynamo Civil 3D .NET api check block definition and create if not found](https://forum.dynamobim.com/t/dynamo-civil-3d-net-api-check-block-definition-and-create-if-not-found/100316)
**Author:** [@majkel](https://forum.dynamobim.com/u/majkel)\ **Replies:** 2\ **Last updated:** [April 23, 2024, 6:50pm UTC](https://forum.dynamobim.com/t/dynamo-civil-3d-net-api-check-block-definition-and-create-if-not-found/100316 "2024-04-23T18:50:34Z")
Hi. I created a function to check if a block definition is created in the drawing. If so, the code is supposed to skip it and if not to create a new one. Its a quick and dirty version so a lot of things to be improved ho… --- ## [Feedback Appreciated: Splitting Lists and Using Levels](https://forum.dynamobim.com/t/feedback-appreciated-splitting-lists-and-using-levels/97729)
**Author:** [@abbailey](https://forum.dynamobim.com/u/abbailey)\ **Replies:** 1\ **Last updated:** [February 1, 2024, 6:23pm UTC](https://forum.dynamobim.com/t/feedback-appreciated-splitting-lists-and-using-levels/97729 "2024-02-01T18:23:44Z")
I am creating a BIM from design done by others. I have a large pipe network of an existing water line, which I have split up based on plan annotation of the proposed action to be done to that pipe (i.e. abandon it, re… --- ## [Intersecting lines not generating points](https://forum.dynamobim.com/t/intersecting-lines-not-generating-points/91725)
**Author:** [@mark.reeveTXANL](https://forum.dynamobim.com/u/mark.reeveTXANL)\ **Replies:** 21\ **Last updated:** [July 14, 2023, 12:12pm UTC](https://forum.dynamobim.com/t/intersecting-lines-not-generating-points/91725 "2023-07-14T12:12:35Z")
Hi, Not really a new topic, but I can’t seem to find the answer in similar the threads. I have a drawing that had a block for spot levels. These have for some reason been exploded into lines. I want the intersection po… --- ## [Dynamo Office Hours - Going with the Flow](https://forum.dynamobim.com/t/dynamo-office-hours-going-with-the-flow/87441)
**Author:** [@solamour](https://forum.dynamobim.com/u/solamour)\ **Replies:** 4\ **Last updated:** [April 3, 2023, 1:34pm UTC](https://forum.dynamobim.com/t/dynamo-office-hours-going-with-the-flow/87441 "2023-04-03T13:34:28Z")
Do you use Civil3D and Dynamo? Do you use Pipe Networks? Did you want to know how they work in Dynamo, or simply come hang out and chit-chat for a bit? Then Come join @jacob.small, special guest @david\_licona and (ki…