Panel straddling

[laagman]

Originally Posted by ritelec

You can also try cutting them one 34", one +/- 28", etc... to have layers going from front of straddle to the corner horizontally face facing forward. And rows from floor to ceiling.

Mmmm... hadn't thought about that. Would that be less cutting?

[laagman]

I found very affordable fiberglass with a density of 10 kg/m^3. Would that be adequate for 34" (front face) SSC's? Or maybe too light?

[DanDan]

I reckon 10KG will be fine. If you compress it into the frame the density will go up a bit. Sometimes we don't even cut the stuff, just stick the roll, in it's bag into the corner. Seems to work if you need a temporary or portable fix.
I kinda think a little Eureka has happened, probably un-noticed...
Take a look the the performance of Gernot's VPR

Perforated Panel with Porous Absorber trap

DD

[laagman]

Originally Posted by ritelec

You can also try cutting them one 34", one +/- 28", etc... to have layers going from front of straddle to the corner horizontally face facing forward. And rows from floor to ceiling.

I think cutting wedges (like discribed on studiotips.com) is a lot of work. Let's say for a 2.4m (8') SSC you'd need to cut 48 triangles from 24 sheets: 72 cuts!

Your suggestion seems smarter. But what about this?

Put them vertically, 2 on top of each other. All pieces have a 1,2m (48") height and different widths (see diagram)

Like this it will be just 8 cuts per SSC.

top view (dimensions in cm)

front view (dimensions in cm)

[ciro]

E aí, "meu rei", beleza?

If in the end you decide for the traditional triangular shape (remembering that 10kg/m3 is not dense enough to stack vertically without a frame), DD always suggest this excellent and easy way to make the chunks - 24 " faced there. But go with the 34" face, they will perform a lot better.

Ciro

*Edit (now I see you´re not the thread starter, sorry laagman ...)

[laagman]

Originally Posted by ciro

(remembering that 10kg/m3 is not dense enough to stack vertically without a frame)

Rapaz, you got me. I didn't think about the density! And even if I choose to use 20 kg/m^3, it may be too floppy.

The design you linked to, is almost exactly what I had in mind. Painting the frame in the same color as the fabric seems a good idea!

I'm sure about doing 34", but I haven't decided about the density, 10 or 20 kg/m^3... tying to figger that out using this tool: New Porous Absorber Calculator

Btw, what's your location in Brazil?

Abraço

[ciro]

Porto Alegre, PM sent.

Ciro