The Secret Garden
I used 40mm box and 19mm ply and this is what I came up with..
The stage at the theater was built on a slope towards the front which meant I had to install some adjustable feet for the whole assembly.
For transport and storage the assembly was built in sections, 4 step flights, 2 square frames and the main frame flat packed.
When on stage we installed uprights on the steps and intermediate frames and this allowed us to fit a rope banister going up the steps and meeting the top rail both back and front.
This picture shows it on stage ready for action. I have to admit I was quite nervous as the top was filled with dancing actors and acrtresses :)