AutoCad :: Doing Calculation Within A Command
Apr 11, 2013
When I used earlier versions of Acad I used to be able to do a calculation within a command. Like if I wanted to offset something equally on each side of a mid-point I could start the offset command then for distance I could put in the distance I wanted/2 (ie if the total distance between the 2 lines needed to be 85.375 i I could do 87.357/2). Is there some setting that I am missing or is this something that has disappeared from Acad?
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Apr 4, 2013
I find conflict area between list command for hatch and calculation.
when do you make calculation list of plines 2381.399
when do you make calculation list of hatch 2545.948
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May 15, 2012
I have an existing contour surface. I would line to calculate the volume of topsoil which will be 300 mm following below the existing contours.
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Sep 6, 2011
I have a point from an xref and I need to find the corresponding point in the current CAD file.
The xref is offset from 0,0,0 and rotated in and from the XY plane.
I have the original point and the xreferences attachment point and normal and rotation but my calculations always come up with an error.
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Oct 2, 2013
I have a requirement to create a block with a few attributes, but the attributes require a bit of composition behind the scenes. Here's an abstract example.
I need a block that represents a computer's identity. Each computer has 2 references that need to result in attributes that I can extract. One attribute is a unique reference across the project, and the other attribute is a room reference, and many computers can be in the same room.
Here are some example references.
Computer A
Unique Reference: DF.SALES.01
Room Reference: DG.SALES.07
Computer B
Unique Reference: DF.SALES.02
Room Reference: DG.SALES.07
Computer C
Unique Reference: DF.SALES.03
Room Reference: DG.SALES.07
Computer D
Unique Reference: DF.ADMINISTRATION.01
Room Reference: DG.ADMINISTRATION.02
Computer E
Unique Reference: DF.ADMINISTRATION.02
Room Reference: DG.ADMINISTRATION.02
As you can see from the above, the 'common' part for a computer is the middle 'SALES' or 'ADMINISTRATION' part, which 'technically' only needs to be put in/typed in by the user once for each computer. I need to automate this process to reduce user input error, such that they only enter 'SALES' or 'ADMINISTRATION' once and don't end up creating the below, which would be invalid.
Computer F
Unique Reference: DF.RECEPTION.09
Room Reference: DG.SALES.07
Thus I imagine I need a third property/field/attribute to specify 'room', and then formulate the Unique Reference and Room References, using this 'room' part in the middle.
The end goal here is that I need to be able to extract the above two references for each 'computer/block' and get them into Excel, and I need to be able to modify the 3 properties (room, unique reference and room reference) quickly, ideally using something like EATTEDIT, which is how we have edited attributes in the past.
The use case above is abstracted, it's actually not for computers at all but I figured it would make more sense than complicating it with the actual application!
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Apr 29, 2013
I don't use the area calculation tool that much. I was just working out a large area for concrete. I use TOOLS - INQUIRY - AREA. Thats all fine and it gives me the area, for instance, to keep it simple 4900 x 9000 = 44.10m² AutoCad displays it as 44100000. I know it's not a major problem, but is there anyway I can get it to display as 44.10 or at least lose all the zeros.
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Nov 30, 2012
I have trying to run lift station simulations and my calculation nodes are always flooding. They don't flood in real life so what could be a problem?
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Sep 25, 2012
I have run a volume between two surfaces, I need to further to break that new volume surface up to get volumes for each section. I know in microstation you can fence a volume surface and it will tell you the volume for that area. Is there a function in civil 3d that works like this. I know I can break it up manually and create new surfaces, I am looking for a time saving appoarch and trying to minimize file size.
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Dec 29, 2011
In the attached report, safety factor is se to calculate from ultimate tensile stress (485 MPa), and it indicates 1.33 with stresses:
Von-Mises: 323 MPa..............SF = 1.5
1st principal: 303 MPa.............SF = 1.6
2nd principal: -181.2 MPa....... SF =2.67
So, how is inventor getting 1.33 ?
EDIT: if I set it to calculate from yield ( 260 MPa) it accurately reports SF = 260/323=0.8
EDIT: added part file
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Jun 11, 2012
I want to use 3D civil software to calculate the the reservoir volume from the attached micro seismic data.
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Sep 11, 2012
how the area calculation works for finding the square footage of a dwg.
I can easily get a rough estimate of square footage on L X W....but when i use the area measuring tool, i get total inches and a total sq foot estimate of 1.7xxxxx which i don't understand.
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Sep 3, 2013
volume dashboard on which method of calculating is based. Why sometime are different, huge differences between counting volume based in "computer materials" which of 3 is the best? for calculating? I am using very often average end area, is that correct?
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Jan 2, 2013
I'm new in civil 3d road design so my question may be basic.when i prepare a corridor and proceed to get cut and fill it appears as zero.i think i made some mistake at a stage when in section line we decide surfaces..step wise from section line selection to cut/fill calculation also give me the general concept regarding selecting surfaces during cut/fill volume calculation?
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Jul 24, 2013
I have a manure storage pond that I am trying to figure out the total storage volume for. It has 2.5:1 Side slopes and a 10 foot wide ramp at 10:1 entering the pond to the floor bottom. I am trying to figure out what the volume of this pond is. What is the fastest and most efficient way to get this volume? I do not want it compared to any other surface such as existing ground.
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Sep 16, 2012
Calculation of resistance, making a simulation for an aquarium stand. Stand must support about 900 kg., Is made of 18 mm chipboard, combined with screwing.
All vertical walls are triple, its made of 3 pieces of chipboard, and the above is twofold. Policies are also set to increase rigidity all the screwing structure. The dimensions are 2000 (L) x 700 (w) x 774 (h).
what weight support the stand?
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May 16, 2012
How to get multiple objects area easily. i am using auto cad 2009.
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Nov 13, 2013
I attach picture 1 and 2.
I need to create surface like this picture 2. I need crate surface by joining 1, 2, 3 like as picture 2 section, but when i crating surface its joining as picture.
This problem have been found . I created a tofo of the rock which rock is bend lower picture 2 section to calculate the volume i need the surface create like this.
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Apr 14, 2013
how to calc dirt quantities in Civil 3D. Not just on roads, but say you have a small mountain of dirt that needs to be hauled away, and the contractor asks if you can quickly tell him how much dirt is there. And subgrade quantities for pads. Things like that.
First off, I'd need to learn the correct terminology. Knowing what to call stuff can at least make you sound less stupid when you ask a question.
HP DV7 Laptop
Intel Core i7-3820QM 3rd Generation Quad Core 2.7 GHZ CPU
16 GB DDR3 RAM ( 2 DIMM ) / 180 GB SSD
Nvidia GeForce 650M Graphics w/2 GB Memory
Windows 7 Professional 64 bit / AutoCAD Civil 3D 2014
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Aug 4, 2012
how can i do hydraulic calculation for pressured pipes using autocad civil 3d or by using any other autodesk application or extension
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Nov 22, 2012
My company recently installed Inventor 2013. In previous versions we used a part with negative density similar to seawater to calculate submerged weight and CoG.
In IV 2013, it seems that the ability to calculate negative mass is not longer available.
This is how it worked in pre 2013 IV, when I could specify a negative density.
What I have is a spool made of steel. This spool is modelled as an iAssembly with four configurations:
-In air, empty
-In air, filled with glycol
-Submerged, empty
-Submerged, filled with Glycol
For this example, I now need three parts:
-Steel Pipe
-Glycol derived from the inside volume the pipe
-Seawater buoyancy derived from the outside volume of the pipe.
Each part has its own density, and the assembly weight and CoG correspond to the assembly configuration (with or without glycol) and environment (in air or submerged).
The seawater buoyancy represents the water displaced by the total spool assembly, regardless of the contents. To achieve correct weight in the submerged state, the buoyancy material has to have a negative density.
I do not want to make any of the mass parameters static, and I also fear that the CoG might not be updated correctly when using that method.
As I no longer can define a negative density, any optional method to achieve this without overriding the mass value.
Autodesk Product Design Suite 2013 SP1
Win 7 Enterprise 64bit
Intel Xeon CPU E3-1240 V2 @ 3.40GHz
16Gb Ram
Nvidia Quadro 2000
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Feb 22, 2012
In hydrographs, SCS method, the basin slope is needed for the the calculation of the time of concentration. What is the method for the calculation for the basin slope ? If we have a 3D surface is there a tool in autocad to calculate that automatically?
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Dec 30, 2013
Questions below pertain to using Autodesk Inventor 2013:
What factor of safety value the Shaft Generator program uses when you run the calculations?
Does the factor of safety value change when you are not using the inventor user material option?
Lastly, when exactly do you know when to use the density option in the calculation properties or not?
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Jan 9, 2013
I have a volume in my CAD file described by 3D Faces. Is there anyway to know what is the volume of this volume -that represents an open pit-?
Every time that I do a volume I do by the comparison of 2 surfaces but this is not the case now.
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Sep 26, 2011
I am trying to calculate the area of our parts. I was trying to do the math my self but I kept getting a lower area than IV. I haver attached a picture of what I get from IV. I have listed my calculations of the angle iron below:
I am using IV Pro 2011 Educational SP1
i7 2600
8GB ram
1Gb GTX 560
Cart 72 lbs 4006 sq in
All calculatoins are in ^2
(4) 2x2x1/8x48=92.928, 371.712
(4)2x2x1/8x33=63.888, 255.552
(4)2x2x1/8x29=56.144, 224.576
(2)2x2x1/8x32.669=31.623592, 252.988736
(4)2x1/8x2=32.912
Total = 277.495592, 1137.740736
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Aug 8, 2013
I've recently started working with Civil2012/2013 (bit the bullet you might say).
I attended a course on civil about a year ago but it didn't cover all the bases.
My question: stripping calculation, is there a way fro civil to perform it automatically?
One way to calculate stripping (manually) is after i have all the tin volume surfaces, is to show the fill areas in the volume tables and then do the calculation myself.
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Nov 19, 2011
I would like to know what calculation on the length of a folding feature is performed by Inventor when one folds it. Read my example to better understand my question.
I am trying to fold a part of my sheet 90 degrees, I am going to call the folding part sheet B and the rest of the sheet, sheet A. Now, understand that when I fold sheet B 90 degrees, its face will no longer be parallel to sheet A, but the face of its thickness will. Consider this, now: when I fold the sheet B, there will be an inner part of the folding (which will have the faces of both sheet sections 90 degrees from each other) and the outer part (which will have an angle of 270 degrees between them).
I want the distance between the thickness face and the outer face of sheet A to be X in length. Which is the intial length of sheet B for this to happen? Consider using the BendRadius, Thickness, and other Inventor Sheet Metal parameters that will participate in the equation.
The question surged because I wanted such distance to be 5 in a part with a Thickness setting of 0.5 (as well as BendRadius), but because of this folding length calculation, I had to make sheet B 5.631 in length.
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Jan 6, 2012
i've got a lisp-routine that calulates multiple area's and put the sum in text in the drawing on the place i select.
the sum has to be devided with 1000000 so that it is in m2.
the lisp-routie i use is:
(defun c:ca(/ pt ent txthgt)
;;; bepalen van de teksthoogte indien current style height = 0
(setq txthgt (cdr (assoc 40 (tblsearch "STYLE" (getvar "TEXTSTYLE")))))
[Code]......
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Feb 23, 2013
How to create a dome using just the surface area?
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Feb 7, 2013
I am looking for a lisp or vba to calculate solar panel angel / solar light power on any place in the world found 1 that shows sun time on 1 day of the year.
And can the autocad menu's SUNPROPERTIES / GEOGRAPHICLOCATION be controlled by lisp or vba ?
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Mar 1, 2012
I am highlighting an area and at the last point where I press eneter expecting an area calculation, I get this message "specify next point or [A/L/U]; I don't want that I want the area
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Mar 25, 2013
I prepared a lisp code that needs high precision calculation:
(defun Time2Frac ( h m s hsec)(+ (/ h 24.0) (/ m 1440.0) (/ s 86400.0) (/ hsec 8640000.0)))
test:
(Time2Frac 23 59 59 99)
it returns 1.0 but the real result is 0.9999998842592
so, how can I change the precision of AutoCAD for some calculation?
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