Getting around Stairmaker's 2*R+T?

[Anonymous]

Is there a way around Stairmaker's parameters for the tread and riser sizes? I am making a circular stair (thanks to great tips in this forum). Stairmaker won't let me put 6" risers in because that creates a too small result in its (2xR)+T formula. What a dumb thing. We should be able to make as unsafe a stair as we can imagine. It's a drafting program, not the police, right?

Any tips on how to get around this? If not, does some add-on allow this?

Thanks for any and all help and clues,
Doug

[TomWaltz]

It's been a long time since I used Stairmaker, but I think you can change the maximum value for 2r+T

[Dennis Lee]

I use archistair for my stairs, and am pretty happy so far.

[Gerald Hoffman]

Doug the last time I used Stairmaker and had one of these messages I was able to enter a different upper and lower figure in formula windows. It then generated just fine.

Cheers,

[Anonymous]

TomWaltz wrote:
...but I think you can change the maximum value for 2r+T

Yes - make the "(2*Riser)+Run <" number really big, like 1000mm or something. You can also make the ">" number really small if it's still being a pain.

But if you can, get ArchiStair, you have way more control, and usually end up with the stair you wanted.

[Link]

The archi-police say that you can set the minimum '2R+T' at 200-602mm and the maximum '2R+T' at 602-10,000mm. The greyed out '2R+T' is the summation of the Tread length and Riser height parameters entered below, which are further constrained by the overall Geometry Settings.

Cheers,
Link.

[Anonymous]

Thank you for the excellent help. I had been trying (stubbornly) to change the riser height dimension. I needed to first change the 2xR+T, then change the riser dimension. All is well now. It's often a matter of loosening up my approach to these things that I need.

Thanks again, everyone,
Doug