AutoCAD Civil 3D :: Orifice Calculations In Hydraflow Hydragraphs
Dec 13, 2012
I can't seem to confirm the discharge table that hydraflow produces in hydraflow hydragraphs. I think I understand the equation itself (it's been a while since I took hydraulics), but can't understand where I'm making my error (if I am). Normally I trust the stage/discharge curve that hydraflow produces, but the City Engineer is asking me to confirm the values by hand and show them on the plans. Is there a link to an detention pond example that shows how a curve (the outflow values) was generated (confirms the discharge table at various elevations)? The equation is on page 85 of the users manual.
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Sep 14, 2012
I noticed today that the orifice rating curve for orifices is being calculated incorrectly in SSA. The head is being calculated to the orifice invert instead of to the orifice centerline. This probably has a minor (or no) effect if tailwater conditions are present
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Apr 16, 2013
how can i change the value for Q (cms) in hydraflow i want to give the value for first pipe and for the others it should automatically calculate.
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Nov 7, 2013
New user for civil 3d and the hydraflow extension for civil 3d. I have my pipe network created, all the correct catchments are attached to the correct basin/inlet. i have opened my network in hydraflow and am ready to run it. when I click run it says no flow. Now I know there is another step i need to set my flow wth TOC, I've inputted that, i am using the standard idf curve hydraflow, i have the areas with their coefficients, however it is not calculating my flow rather it is telling me no flow is inputted for certain lines i.e. the ones with MH connections and no inlets.
I have attached my .stm file to this thread, i changed the extension so it would post, just delete the .doc from the extension and it should work in your hydraflow.
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Jan 17, 2013
I opened Hydraflow Sewer Extensions and created a project. I was able to save it and open repeatedly without problems. I opened open project dialogue window here I copied and renamed a copy of the project file. When I tried to open either the original file or the renamed version - Hydraglow shuts down. The project file has attached dxf file as abackground. (see attached). I hate to lose a day of data entering given my tight deadlines.
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Oct 31, 2012
I'm having an issue with my Hydraflow model where the HGL and EGL drops suddenly to 0 in the upstream pipes. What might be causing this? Picture attached.
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Feb 11, 2013
I am running Civil 3D 2012 and my Hydraflow crashes everytime I run an analysis. I am using a known Q and have input pipe inverts/slopes and pipe sizes. Everytime I try running an analysis I get the following message: Line 1, 2, 3 has no flow. Check pipe size(s) and slope(s). Then the program closes up.
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Oct 27, 2012
Is there anyway that a tidal flap valve fitted to a culvert outlet can be modeled in Hydraflow Express Culverts.
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Jun 19, 2013
one would think that you could just export the .stm file into hydraflow, make some changes, and import, and all would be fine. when i export, all of the structures in hydraflow come up as drop curb. how can they come in as what they actually are.. aka, when the part i use is a 2x4 box, it should come into hydraflow as a "grate inlet", or a st-mh will come in as a "manhole".
and then likewise, when the changes are made, and its brought back into autocad, they all come in as a "standard" style. except the outfalls, which show as a "standard" style, but come in with a different block, and get a whole new label (outfal - x)
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Oct 30, 2008
When I try to run my hydrographs through a pond I get an error stating something to the effect of: Outflow greater than Inflow on Hydrograph 6 for the 50-yr storm.
How can the outflow be greater than what is flowing into it? How the program can calculate this.
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Nov 14, 2012
We are seeming ot have problems with a few of our engineers having the Microsoft Office product go to "Not Responding" and then closing while working in Hydraflow & Hydrographs. This has been with Outlook, Word and Excel. All workstations are 64 bit systems with 16 gig of Ram Windows 7 and Civil 3D 2012 SP2.1.
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Dec 30, 2013
I have my original surface I created with my point file and break lines. I created a new surface and was able to determine how to create my grading at a 3:1 slope that stopped at the surface I created from the point files. From there I went back to my Grading Groups and selected the Automatic Surface Creation.
From there I don’t know if I have to selected the Volume Base Surface and selected the surface I am grating from or if I can simply create a volume tin surface selecting the new surface and the original point surface for comparison. How do I make sure the Volume I am getting include the volume from the grading slope?
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Dec 22, 2011
I'm trying to model the under drain system of a synthetic turf field in Hydraflow.
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Dec 9, 2013
I have been asked to do volume calculations using Civil 3D for some concrete piles for a oil/survey company. I have done volume calculations for site and land development projects but nothing to do with concrete piles before. It also appears I am the only person with any Civil 3D back ground in the office. I did mention my experience with Civil 3D was limited but I was trying to expand it by looking for Civil 3D jobs and working through the 2012 Mastering AutoCAD Civil 3D book.
I am assuming doing volume calculations for concrete piles is quite different from doing volume calculations for grading plans. The company has been primary using AutoCAD Maps and doesn't have much set up for AutoCAD Civil 3D yet.
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Jun 5, 2013
I built a containment dike using the grading functions in Autocad Civil 3D. I set up the feature lines at the top toes of the embankment and graded nicely down to the original dtm. I want to use user defined contour to get the interior storage from the original dtm up to a selected elevation within the containment dike. The containment dike forms an enclosed area. I know I could use infill and add a false bottom to the embankment surface (triangulation from bottom toe of embankment across to opposite embankment) but I want to check storage from original ground dtm.
Is there a workaround method to do this without creating infill? I know I need to get down to two surfaces to get a calculation.
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Apr 4, 2013
I must monthly calculate quantities. So i have 3 surfaces, one is representing the original ground level and the other two the measurements on the end of the months. Between the measurements I calculated volume. But I want calculate the quantities what is inside of the original ground level, what is outside that I want to exclude from the calculations. There is a way how to crop that surfaces to match with the original ground level?
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Aug 24, 2012
Any way for Vol. calcualtions to be shown in Acre Feet? I am doing Volums of lakes and the client needs a report of the number of Acre Feet in the lake. To get the data, he uses a depth finder hooked up to a GPS. I can do this by hand calculator but using Civil 3D 2013 would be much easier.
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Jun 24, 2013
How to calculate Hydraflow Storm Sewers Extension by way of Importing DXF Plan Layouts?
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Jan 17, 2013
I have learned the hard way that Civil 3D has a Curve Tolerance value that is to be used when applying sample lines and computing average end cross section volume calculations along an alignment with a curve. How I discovered this was by double checking my self and using a straight alignment verses an alignment with a curve. When using the alignment with a curve the average end cross section volumes differ. I did some reading in Autocad help and it mentions that sometimes a curve tolerance value is needed when using curves and this value is changed in the compute or edit materials window. What is a curve tolerance?" The edit materials window prompts a user to enter a Degree value. How do I calculate this curve tolerance value? I assume it is related to one of the values of a curve.
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Feb 13, 2012
What I would like to do is create volume calculations from spot heights. All i have is 4 rectangles with a 10m interval, nine elevations, no points or anything else.
What steps do i have to go through to make this possible?
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Aug 30, 2012
I am working on a project, I was given a file with the contour already mapped out. I am tasked with finding volume of a fill I had to create. I made a 3-D polyline at the elevation I want my fill to start from and going down to my final grade. How can I make surfaces with my map. I do not have any files to make the surface off of. What is the easiest way I can make a layer, TIN has already been done but no surfaces are in the file.
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Aug 21, 2013
I am having issues with importing / updating existing storm network.
The problem is when I update the storm network, All the outlets are added as new structures. It does not update the existing headwall / end sections.
I then have to go thru and delete the added (null) outlet structure. Then, reattach the existing outlets to the pipe network to show up in the structure data table correctly.
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Jun 15, 2009
When I try to open any of the Hydraflow extensions, I get the following message: "Installation error Invalid installation. Program ending." I ran a repair from Windows, but get the same result. How to successfully open/use any of these Hydraflow components in 2010?
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Dec 17, 2012
I am trying to calculate the area of the attached file. Just the Blue section. Is there a faster way to calculate the area than using the "area" command, then going through and selecting each line, then each arc, over and over again? I also tried making a poliline that follows the entire pattern at the width I wanted, then using the "area" command for the "object" that is the poliline. This is faster, but does not give me the correct area. It says that the calculated area does not take into consideration the width of the poliline. The width of the poliline is very important in my application, and will sometimes be changed. Than a new area will be needed with the new width.
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Mar 13, 2012
I am using autocad to find areas of a stream cross section such that when we take a water height measurement of the stream in the field, we can easily get the area from a spreadsheet since the cross section of the stream at any height will be known (once I get done in AutoCAD).
To further illustrate my needs, I have attached a picture. I need all the seperate areas between the red lines (the red lines are equally spaced vertically and have lengths that go end to end to the edges of the stream).
I have been hatching between the red lines and taking the areas of each hatched object. However, this is a slow and tedious process.
Hatching is not the issue because I can hatch multiple objects at once using the create seperate hatch option.
What I need is a way to list all the hatched object's areas into a text file so that I can easily copy and paste them into an excel file. Even if it is not a nice and neat list, I can atleast use a find for "area" to get them into a nice list a little faster.
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Aug 11, 2013
Any routine or tool that simplifies calculating and labeling floor areas?
Currently, I draw a polyline around the desired area, list it to get the square footage and then create a text line and type in the square footage. This method takes multiple steps and is easy to mistype the area.
I would love a simple tool that would let you draw a polyline and automatically label it for you.
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May 6, 2004
I am relatively new to AutoCAD LT and I am constructing floorplans and measuring the area in m2. My problem is that my areas are not adding up correctly. We are investigating possible future redesigning of units, and although the outer boundary of the building is the same, when I add up the individual units this total area does not add up correctly. While trying to figure out what was going on I traced one unit exactly on another layer and compared areas between the two identical polygons....and they have different areas!?!?!?
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May 17, 2012
I am using the calculation tab in the bolted connection generator. Is the maximal tangent force (Ft) the total force of plates in shear or per fastener? It appears to be the total force because changing the number of bolts changes the results.
I have been running different configurations due to a failure in a test cell and the numbers don’t seem correct. The calculation indicates that the fastener would fail at a much lower force than it actually is.
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May 23, 2012
After starting my previous thread "What formula will work to achieve this result" I decided to post this new thread because I have changed my mind and will now be using the external Excel file that the "Extract Data" creates to do my calculations.
Here's what I would like to do: create a Macro [button] in Excel with the following conditions:
*
Sample of excel spreadsheet:
*
MANUF NoSUB No.DESCRIPTION** UNIT QUANTITY
A123494456TYPE A, XXXX XXX * * * * EA** * * * 45
A423520374YA1AM, XXXXXXXXXX * **EA** * * * 55
A148231375TYPE B, XXXXXXXXX * * * EA** * * * 33
A146151725A1AAM, XXXXXXXXXX * * EA** * * * 67
A135621873TYPE A, XXXXXXXXX * * * EA** * * * 24
1. * * * CONDITION #1:
IF "DESCRIPTION" TAB ["C" COLUMN] CONTAINS "TYPE A" AS PART OF TEXT/DESCRIPTION, TAKE THE "QUANTITY" TAB ["E" COLUMN] SPECIFIED ON THAT PARTICULAR ROW AND DIVIDE IT BY 20, ROUNDED UP TO NEAREST ONE.*
2. * * * CONDITION #2:
IF "DESCRIPTION" ["C" COLUMN] CONTAINS "TYPE B" AS PART OF TEXT/DESCRIPTION, TAKE THE "QUANTITY" SPECIFIED ON THAT PARTICULAR ROW ["E" COLUMN] AND DIVIDE IT BY 10, ROUNDED UP TO NEAREST ONE.
3. * * * AUTOMATICALLY SAVE THE EXCEL FILE AFTER THIS MACRO HAS BEEN UTILIZED.
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Aug 15, 2012
Using inventor to calculate specific distances or counts of features on a part. Say for instance, the lineal feet of a radial edge, or the number of cutouts a part may have. If so, how are you approching this? Can be programs written with the API/iLogic or just general setup I am pretty versitle and open to any discussion.
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Nov 17, 2011
If inventor Simulation can do stress calculations based on standards / rules ?
Autodesk Inventor Professional 2014 (Product Design Suite - Ultimate)
Lenovo W520
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