Parametric stairs design

[Anonymous]

Good morning,

I am very new to fusion but and experienced carpenter.  I have made a parametric design of a staircase.  So far so good, there are issues:

1.  I just cant figure how to even out the distance of my steps to both top floor and ground floor, and between each step.  I use the numbers of steps as a parameter, is there a way to calculate this automatically?  For instance, if you build a step, the distance going up should be between 17 and 21 cm for an ideal staircase.  I have thought about drawing the first and last step manually and then filling the void with a rectangular pattern.

2.  It would be a great thing to just measure the height of the finished floor and the staircase opening and apply these parameters in fusion and have all the stairs evened out.

3.  From what I have read, the aim is to recreate seperate components, how can I easily generate a parts/cutting list?

Thanks all, Have a good sunday

[g-andresen]

Hi,

1. take a look at the equations  &  formulas 

    especially the functions ceil and floor

Maybe I´ll find a screencast I´ve made in the past.

so long

günther

[Anonymous]

Hi Günther,

Thanks for swift reply.  Thats great stuff, thanks!

I could generate the distances as per the math. functions you have suggested. 

Unfortunately I can only manage to get the ideal distances evened out in between stairsteps from a vertical angle. But This is worthless to me to use in the rectangular pattern function.  Is there a workaround or am I missing the math skills here.  Would you be able to elaborate?  I have attached another drawing. 

Thx, M.

[laughingcreek]

you want to create components as soon in the process as possible, and then pattern the components (not bodies).  right now each tread and stringer in your design is a separate, unique component.  (I just looked at the first model you posted, not the second)  your BOM will read

(1x) stringer 1

(1x) stringer 2

(1x) tread 1

(1x) tread 2

...

(1x) tread (last number)

if you pattern the compnets instead, then you will have 2 copies of the same stringer, and (num_of_stairs) of the same tread.  your BOM will read something like-

(2x) stringer 1

(10x) tread 1

(or how ever many stairs you have.)

attached is an example of how might go about it.  also attaching a screen cast showing making adjustments.  you'll notice it doesn't keep you from inputting numbers that won't work.  like 3 steps for 10 foot of rise.  you have to pay attention that things make sense.

https://knowledge.autodesk.com/community/screencast/5f914e64-dd0b-4b14-b998-a0afda135a2b

[g-andresen · Accepted solution]

Hi Marcel,

here is a screencast showing first steps.

I have only created an introduction to the parametric construction of stairs.
I hope that the translation of the terms used is sufficient to clarify the procedure.
From height and length I determined a running length. This became the basis for the step arrangement.

günther

Note:

For the calculation I used an angle function, because  quadratic expressions for pythagoras yielded only nonsensical results.

[laughingcreek]

---

@g-andresen wrote:

...For the calculation I used an angle function, because  quadratic expressions for pythagoras yielded only nonsensical results.

---

what part of the equations where you having trouble with?  worked fine for me (see posted example).  
 

[laughingcreek]

---

@Anonymous wrote:

...1.  I just cant figure how to even out the distance of my steps to both top floor and ground floor, and between each step.  I use the numbers of steps as a parameter, is there a way to calculate this automatically?  For instance, if you build a step, the distance going up should be between 17 and 21 cm for an ideal staircase.  I have thought about drawing the first and last step manually and then filling the void with a rectangular pattern.

2.  It would be a great thing to just measure the height of the finished floor and the staircase opening and apply these parameters in fusion and have all the stairs evened out.

3.  From what I have read, the aim is to recreate seperate components, how can I easily generate a parts/cutting list?...

---

the answers to 1 and 2 are in my previous posting (see screen cast and model), but I forgot to answer 3.  once your components are properly sorted, you create a drawing, and put a "table" on it. 

it will automatically be filled out with a list of components and their qty's.  here is what it looks like for the file I posted-

[g-andresen]

Hi,

---

@laughingcreek wrote:

---

at part of the equations where you having trouble with?  

---

Thanks for asking.
I used the expression lenght^2 instead of (lenght/mm)^2.

günther

[Anonymous]

Thanks,  Can you get the sizes/cutting angles of the parts in the list as well?

[laughingcreek · Accepted solution]

---

@Anonymous wrote:

Thanks,  Can you get the sizes/cutting angles of the parts in the list as well?

---

Not in the table, but you can put that in the drawing.

[Anonymous]

Thanks!!  You have really helped me out.

Next step is a staircase with an irregular shape like the one here:

[rikblaauw]

Any luck with the more complex type of stairs? Like a stairs with a quarter turn or a stair with a bend? I'm quriuos to know the way to go about designing that in fusion. 

Thanks,

Rik

[Anonymous]

Hi Rik,

No, I couldn't achieve the more complex styles.  Maybe it might be
better to design stairs in sections.  straight part, 90 degree angles
etc. separately, what do you think?

How are you doing with this?

Cheers

[Ait-Tek]

Hi,

I have been struggling with stairs for months then just found your parametric design. I tried it just altering the height to 3000 and it fell apart. Have I done something wrong?

[davebYYPCU]

Changing the long board length is not correlating with step count, sizes etc, so making one parameter change, that does not flow through, yes something is wrong.

Might help.....

[g-andresen]

Hi,

I just tested the old file > works as expected

What´s that?

did you work with "old" file?

Mybe share your "new" file

günther