PIPE NEWORK PROFILE STATIONING LENGTH NOT MATCHING WITH PIPE LENGTH

[Sinoj.Ravindran]

Dear experts,

Greetings..

My pipe profile stationing band is not matching with pipe length..!!

I guess its because of two decimal rounding of pipe length and alignment length.

In the label style used round normal option.

Attached is the civil 3d file which marked the error location.

Thank you

[MMcCall402]

Yes, it appears to be due to the rounding of the stationing vs rounding of the pipe length to 2 decimal places in the profile band vs the plan showing the pipe length to 3 places.

[Sinoj.Ravindran]

Hi..

Then what is the solution...!!

Our client is marked all of those values to correct..

How can I do it?

Thank you

[MMcCall402]

My first thought was to use an expression to calculate the length of pipe based on rounded station values.

((ROUND({Pipe End Station}*100))-(ROUND({Pipe Start Station}*100)))/100

This only worked great for plan/profile labels (once a reference alignment is assigned to the pipes) as those label styles can use expressions.  However it doesn't work for profile bands. They can't use expressions ... grrrrr

I don't have a good solution for this.  Its a battle with rounded values.

Use pipe labels and drag them down to the band?

[Sinoj.Ravindran]

Hi..

I tried that with pipe expression, it gives me the value of pipe length related to alignment stations..

but in actual pipe length labels in the layout will be different due to the two decimal rounding of exact 2D length of that pipe in plan. And if the client is measured the plan pipe length with dimension tools, you wont get our expression value...!!

So, either I need to use this expression in the pipe layout also to  label the pipe length. And in profile use it and then like you advised to drag it down to the profile band.. seems time consuming..!!

Either ways, client will catch me for wrong inputs, even if its by decimal..

So, what I am planning to do is figure out the wrong stations and hide its view, and then manually place a text with the right number stations.... it consumes time.. but civil 3d has no way around..

Please Autodesk need to develop a way for this.. Is that possible to create profile direct from pipes and structures instead of using the alignment function..

Thank you

[lynn_zhang]

Hi @MMcCall402, any further thoughts on this? Or maybe submit this to Idea Station?

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@Sinoj.Ravindran wrote:

Hi..

I tried that with pipe expression, it gives me the value of pipe length related to alignment stations..

but in actual pipe length labels in the layout will be different due to the two decimal rounding of exact 2D length of that pipe in plan. And if the client is measured the plan pipe length with dimension tools, you wont get our expression value...!!

So, either I need to use this expression in the pipe layout also to  label the pipe length. And in profile use it and then like you advised to drag it down to the profile band.. seems time consuming..!!

Either ways, client will catch me for wrong inputs, even if its by decimal..

So, what I am planning to do is figure out the wrong stations and hide its view, and then manually place a text with the right number stations.... it consumes time.. but civil 3d has no way around..

Please Autodesk need to develop a way for this.. Is that possible to create profile direct from pipes and structures instead of using the alignment function..

Thank you

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[Sinoj.Ravindran]

Hi Lynn,

Already submitted to ideas.....

However, hoping that this will noticed by Autodesk in the future.

Any help from your end is highly appreciated.

Regards

[MMcCall402]

I don't think there is a solution for this. Its an inherent product of using rounded display values, values used in calculations and then true values being measured in the plan by the client. 

When the display values are limited to a number of decimal places the values displayed are rounded. By default the software uses true values in calculations and then displays the result in rounded values.  This, as we've seen, can create what appears to be a discrepancy in measurements. (stations vs pipe length) Many times this can be dealt with by the ability to create an expression that rounds the values prior to being used in the calculation.  However, expressions can't be used in all required instances. (like bands)  Then on top of that there is the situation where the client is measuring the drawing and comparing true values to rounded values.

[lynn_zhang]

Thanks Mark, appreciate your explanation!

[Sinoj.Ravindran]

Hi,

Thanks and hope this will get sorted somehow in the coming versions as you guys will notify this to Autodesk developers.

Regards