You have asked a question for which a suitable answer can not be given as many of the board members will also tell you. You must be more definitive in your question. ■

You should investigate the VSMA web site to do it properly. There is a lot of design that goes into any screen no matter the type. ■

If you use a box beam you must be able to weld both sides to distribute the stress throughout the joints. Unless you want a very wide screen you won't be able to get at the last weld runs & so in service the stress distribution will be uneven & the screen will drop to bits pretty quickly.

Consider that you're also going to just about double the vibrating mass of the screen side frames if you use a box beam.

Within reason the cross members will only connect to the inner web etc etc

You BM is next to nothing compared to the stress reversals so where did the box beam idea come from?? ■

Bhaskar

It does not matter - you can design whatever you want.

Ziggy ■

Based on that advice he probably will. ■

johngateley

I believe it is a very good advice - as long as you know how to design it properly. If he has any problems I can do it - anyway what are the consultants for?

Ziggy ■