AutoCad 3D :: Drawing Spiral Staircase
May 10, 2012
I m trying to draw some stairs but really struggling in even finding a place to start. Basically I have a large cylinder which an access platform, I need to put some stairs to it as per the as fitted drawing which is lacking in info to say the least. I know the diameter of the tank, and the length of the stairs as the leave the platfor to the ground. I also know the floor elevation height, just not got a clue where to start.
Forgot to mention the angine of the spiral staircase in 40degrees.
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Oct 10, 2013
I am trying to build a spiral staircase and need to use spline to build the railings. Every time I try to end the spline by hitting enter the spline disappears. I am using 2014, and I have never had this problem before with previous versions.
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Jul 24, 2013
I have the attached drawing of spiral bevel gears; MBSG2-2040L.dwg
it has been taken from this site [URL]
how do I transform it into a 3d structure from that 2d drawing? is all the needed information comprised in it? I can not figure out the shape of the teeth. There is also a 3d version of the gears for autodesk inventor; is there a way I could transform that into an autocad 2011 compatible version (I don't know much about autodesk inventor ).
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Sep 19, 2011
I need a path on a sphere like on the image I attached (sphere_spiral) for the result similar to image called "gomb". The only problem, metric spiral or coil / 3d helical curve path won't work because it doesn't end the result I need, because the lines are converging each other. So, I figured out I need a logarithmic spiral 2D sketch or maybe a sinusoidal path.
I need a path from the sphere's top center point to the bottom center point, projected to its surface with equal distance of lines.
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Sep 19, 2011
I am trying to create a handrail section to suit an existing staircase. I have drawn the plan of the handrail out and then created a 3d sketch to plot the height of the handrail relative to the plan.
My plan was then to draw a spline through the points and sweep the handrail profile along the spline to create my model. If this is the right way to create the model or does tried and tested procedure?
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Nov 26, 2013
I'm trying to draw a helical staircase with a bottom plate underneath the steps. Drawing it isn't a problem. I used a sweep with helical curve. Then I converted this part to a sheet metal. But then inventor doesn't want to unfold it. how I have to make a flat pattern from this one with the necessary bending lines?
Example .ipt and photo in attachment
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Dec 12, 2011
when using the brush/pencil tool it now only draws straight lines (horizontal and vertical). If I try to draw a diagonal line, for example, it just comes out as a staircase.
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May 28, 2013
Is there a way to determine the surface area of a staircase? For example when you click on a floor, the properties window automatically tells you the area. Can you do this with stairs? And is it possible to put this information onto a schedule?
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Jul 22, 2013
I am trying to create a glass roof structure over a staircase (see attached image - underground roof). I thought that I would do this by creating an in place mass, then adding either a roof or probably more likely a curtain wall system to the faces. However I am struggling to create the mass. I have made a wireframe of the roof (wireframe) using lines where the roof folds are, in autocad. I have then linked this in to Revit.
When I come to creating the Mass, I can only place lines using the "Pick line tool", which then only places lines on a specific reference plane (level 1,2 etc), so I only get a 2d footprint of the area I want to create this mass.
If I try to create a mass face using the 3d snapping tickbox, Revit fails to register that there are any lines for me to snap too. I have tried to "Tab", but this doesn't work either.
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Jul 18, 2013
I'm trying to flatten a section of sheet metal so i can get a cut lenth for my fab shop. Please see attached drawing. I want to use these dimensions, and then flatten the part so my fab shop can trace it and cut the sections, bend them and weld together, but when i use the flatten command, nothing happens..
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Oct 19, 2011
You see, one of the slides needs to be a spiral type. It has to be 175 (units-in my case cm) tall and 60 (units) ride so the bigger kids can slide down no problem.
My problem is making the 2D (and thus 3D) image. I'm not to sure how to go about this. I've tried doing the HELIX command but it's seemingly impossible to match up the two spirals to create the constant width and even create the slide.
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Oct 19, 2011
How to make an array in a spiral?
Without first arraying down, then polar, then deleting the extras?
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Aug 4, 2012
Why I can not sweep this circle along this shape
the error is: unable to sweep 1 selected object
Actually I'm trying to create a 3D spiral shape
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Oct 20, 2011
Is there a way to use the coil command to make a spiral out of a rectangle where the thickness of the rectangle starts at one value and ends at another? This would be a spiral torsion spring with decreasing thickness approaching the center.
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Nov 21, 2012
I have a tube which I'm adding a pocket to the outside by removing some material. I then need to array that around the tube. However I need to offset each pocket along the length of the tube. I've attached the tube with one pocket (v2013) and a picture showing the pattern if the surface of the tube was unwraped.
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Jan 21, 2012
how to make spiral array? I am to model ballscrew and would like to put ball in. To do so I would need something like spiral array.
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Sep 29, 2013
slice the spiral stair as per the section.
test.dwg
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Oct 1, 2011
I attached a draw of a spiral column that I 'd like to make into a 3D solid.
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Jan 21, 2008
How do i make a spiral stair stringer in 3d? what commands do i use?
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Nov 30, 2012
I'm looking for a way to determine (and preferably edit) the values of P1 and P2, the offsets of the initial tangents into the PC/PT of the shifted curve. It's not in the (admiteddly basic) book I have either.
[Edit: OK, after double-checking,I just found Widening offset clothoid, but I'm still none the wiser.]
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Aug 29, 2013
I draw an alignment for road. I turned off design criteria and i used data from manual for my country Slovenia. I need spiral in, curve and spiral out on alignment. Finally i got that alignment. Then i insert sample lines along the alignment. Then i saved autocad civil 3d file and shut down the program. When i reopen file, i see that sample lines after the spiral in being erased. Sample lines stayed along first tangent, after that they were erased.
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Jun 23, 2012
I need to reproduce an alignment shown on some plans. I have not had any luck finding a tutorial about how to re-create an existing alignment.
I have a page of plans, it shows the center line going from a back tangent, into a spiral, through a curve, and spiral to tangent. How do I create an alignment from this data?
Spiral Curve
Delta: 1d33'47"
Length: 250.00'
o=0.57'
t=125.00'
Total Curve:
Delta: 24d09'01"
T=10105.34'
L=2,181.34'
o=4582.63'
Main Curve
Delta: 21d01'27"
D=1d15'02"
R=4582.06'
L=1681.34'
Spiral Curve
Delta: 1d33'47"
L=250.00'
o=0.57'
t=125.00'
I am a surveyor and I'm having a hard time understanding the alignment creation tools, in my data collector it is much simpler, you enter the back tangent and the end radius and the length of spiral and whale, but I'm trying to build a corridor, so I can stake the dtm.
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Jun 11, 2012
How would you draw a spiral garden hose? If you don't know what i mean by spiral garden hose Google it. How would you draw the hose.
And would it be possible to make it flexible?
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Jun 22, 2013
what the 2D or 3D equation curve for a parabolic spiral, otherwise known as a Fermat's spiral would be? I have found this info but do not know how to apply it:
Fermat equation
Therefore in terms of the affine plane its equation is
The Fermat curve is non-singular and has genus
I have also found this: $r^{2}=a^{2} heta $
Please see image attached.
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Dec 12, 2011
need to develop the Inventor part based on the autocad drawing. Its a spiral flower step for kids playground.
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Sep 12, 2013
I know I can use "<[Geometry Point Entity Before Data(CP)]>" (or after...) .
But this text is tooooooooo long.
Is there any way to get only the :
- radius - length of segment. or - Spiral A ???
Maybe using expressions? In this case any hidden elements?
I know I can use segments or multiple segments but I want to do the work in only 1 labeling step ...
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Feb 22, 2012
why a line drawn perpendicular to a spiral curve in C3D is not radial? If so, what is it perpendicular to? It can result in several feet of difference.
Also, labeling an alignment along a spiral using the automatic routines appears to run perpendicular (whatever that is - not radial).
Perhaps I'm not looking at the math right (its been awhile since spiral curves in college) but it seems to me that a curve of diminishing radius should be labeled radially. Is that not how C3D sees it?
The only other thing I can think is that C3D is running perpendicular to the small tangents or arcs that it puts in to approximate a spiral curve.
C3D - 2014, Sincpac Addon
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Jul 3, 2013
I have got a drawing with an alignment containing spiral-curve-spiral entities. I need to find what type of spirals are used in these entities - clothoids, cubic parabolas or other. Is there any way, to find it? In panorama and sub-entity editor there is only spiral description without exact type.
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Dec 27, 2013
why this spiral will not flatten properly.
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Jul 3, 2011
I am once again trying to get the hang of drawing a 3D spiral staircase and cannot seem to figure out the SWEEP command properly. I have a channel, or a rectangular tube shape which I want to use for the stringers. If I use a round tube, like when I do the handrail, there is no trouble. But when I use a channel or rectangular tube shape the SWEEP command causes the shape to bank and I end up with an unuseable shape.
In the attached drawing (ACAD-2007 format) I have shown a SPLINE which indicates the path I want the outside stringer to follow.
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Mar 30, 2012
I'm trying to draw a spiral bevel gears system KLINGELNBERG , but the results do not match the actual measurements of the piece.
ex. measure of the real outside diameter of the gear = 356mm
DATA :
number of teeth pinion = 9
number of teeth gear = 44
module = 5
shaft angle = 90 °
face width = 59mm
helix angle = 35 °
pressure angle = 20 °
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