Creating a pipe network from COGO points?

[Thomas-GN]

Hi. I was wondering if it's possible to create a pipe network from cogo points? My cogo points consists of survey data, which is basically the connection point of the pipes at the structures. I need to do this because i have to see how it holds up against the projected elevations and slopes of the pipelines. When i try to draw pipes and structures between my cogo points, the elevations of my structure rim snaps to the elevation of the point. I want the elevation to be assigned to the inlet of my pipe ends instead. This way i can see the slope and distance of the network as a finished product, export to Storm and sewers, and then finally create an excel report with all the data i need. If there's an easier way, please do let me know. I dont want to use the analyze feature "list slopes" for every single line segment.

Hope this made sense. 

/Thomas

[Karadzhaian_Eduard]

Hi @Thomas-GN,

If COGO points - are the result of survey data import you can automatically create survey figures (using points description) and then create pipe network.

Or you can create by these points feature line user transparent commands (then also create pipe network). Point number - is more convenient for me.

[AllenJessup]

I have rarely created a pipe network. Is there any way you could export a PNE file to a CSV or TXT format and edit the elevations? If there is a standard difference between the Cogo point elevation and the invert. This would be easy to do in Excel. Or if you have a list of the invert elevations in the same order as the points. You could replace the elevation column,

[cwr-pae]

I agree with @Karadzhaian_Eduard , create feature lines first to create a pipe network with the proper inverts. Setting your osnap to nodes only you can quickly draw feature lines manually, or have it done through survey data import.

If you create the pipes manually, you can edit the start and end inverts through the properties palette fairly quickly.

[tcorey]

Create a User Defined Property (UDP) Set called Pipes. Add two fields: Depth and NewRim.

Add the depth information (distance rim to invert) to the UDP for the points. 

Edit your Point Group, Summary tab, and apply Pipes as the Classification.

Run the attached LISP. 

Edit Point Group Properties, Overrides tab, apply NewRim as override for point elevation. 

Create your pipes from COGO Points.

Remove the elevation override from the points.

Do not run the LISP with the elevation override active.

(defun c:DES_RimAdjuster ( / c3ddoc acaddoc c3dapp acadapp pts ctr cnt pt pz dpt appno)
(getdoc)
(setq pts (vlax-get c3ddoc 'Points)
      ctr 0
	  cnt (vlax-get pts 'Count))
	  
	  (while (< ctr cnt)
	  (setq pt (vlax-invoke pts 'Item ctr))
	  (setq pz (vlax-get pt 'Elevation)
	        dpt (vlax-invoke pt 'GetUserDefinedPropertyValue "Depth")
			nr (+ pz (atof dpt))
			)
			(vlax-invoke-method pt 'SetUserDefinedPropertyValue "NewRim" nr)
		(setq ctr (1+ ctr))
		)
		(princ)
			
)
(defun getAecAppNumber (/ );c3dnumber c3dproduct c3drelease)
  (setq	C3Dproduct (strcat "HKEY_LOCAL_MACHINE\\"
			   (if vlax-user-product-key
			     (vlax-user-product-key)
			     (vlax-product-key)
			   )
		   )
	C3Drelease (vl-registry-read C3Dproduct "Release")
	C3Dnumber  (substr
		     C3Drelease
		     1
		     (vl-string-search
		       "."
		       C3Drelease
		       (+ (vl-string-search "." C3Drelease) 1)
		     )
		   )
  )
)
(defun getdoc ( / )

  (setq appno (getaecappnumber))

  (setq	acadapp	(vlax-get-acad-object)
	c3dapp	(vla-getinterfaceobject acadapp (strcat "AeccXUiLand.AeccApplication." appno))
	C3Ddoc	(vla-get-activedocument C3Dapp)
	acaddoc (vlax-get acadapp 'activedocument)
  )

)

[Thomas-GN]

Hi.

I have a question regarding your answer. I'm not sure i understand this part "Add the depth information (distance rim to invert) to the UDP for the points". I have created the point UDP and added the fields.

[tcorey]

Do your surveyors obtain give you both Invert Elevation and Depth? If so, use my workflow.

If they give you Invert Elevation and Rim Elevation, we can modify the LISP to accommodate.

[Thomas-GN]

Usually rim elevation and depth as a point code. Or just the invert of the pipes as an elevation.

[tcorey]

Can you attach an ascii file of the points your surveyors supply?