Need help modeling a drywall stair rail

[Deioma]

My railing is going wacky on me.  Anyone have advise on how to model a drywall stair rail with a wood cap?  See picture.

Thanks

[constantin.stroescu]

I propose to use a stair with Closed Stringers (for instance Industrial and Assembly) - stringers as drywall combined with a Model in Place Sweep as wood cap. 

The steps:

1. - the drywall : Select the Stair - using TAB select the Closed Stringer of the stair : Properties > Edit Type > Type Properties > Dimensions > Section Profile > Default -adjust the stringer (your drywall) from Total Depth and Width parameters. Assign material from Material and Finishes > Material - choose drywall material
2. the wood cap:  Architecture > Component > Model in Place > Family Category and Parameters > Generic Models > name it > Sweep > Pick Path >Pick 3d Edges - pick the uppper edge of the stringer on the whole stair length - OK - finish Edit Mode ( for Path) - then : Profile > Select Profile > Edit Profile - draw a reversed U profile  or load a profile from Profile Families...

[Deioma]

What do you do for ADA extensions?

Thanks

[Deioma]

Do you know of a manufacturer who builds stairs with these high stringers?  I don't want to model something that isn't buildable.  Thanks.

[constantin.stroescu]

This type of stair is buildable. I have an experience in Architecture Design of over 30 years (in EU) and I can assure you it is. Of course the stringers themselves as stair structure aren't so big , they are completed with  wooden or metal frame  with gypsum board sidings...

Usualy manufacturers build stairs by their own catalogues , but  they accept to made special stairs at a higher price....The architect and the owner decide this...The architect, also , has to propose the details to the manufacturer.