Plenum PanelsTM span further than solid CLT panels because they are not limited by vibration.

Spans for both PP1 (single plenum panels) and PP2 (double plenum panels) are calculated for typical sheet thicknesses and typical panel.

The spans are for simple span loading and assumed fb of 1,250 psi and an E of 1.2 x106.
An equivalent web thickness of 25% of the sheet width is assumed. Dead loads include panel weight.

Panel Thickness: 4 1/8 6 7/8 9 5/8 40 PSF Maximum Span, feet (for single span) Max Span, Stress 19.57 29.88 39.99 Max Span, l/240 14.66 23.37 31.95 Max Span, l/360 12.81 20.42 27.91 Panel Thickness: 4 1/8 6 7/8 9 5/8 50 PSF Maximum Span, feet (for single span) Max Span, Stress 17.85 27.36 36.68 Max Span, l/240 13.61 21.70 29.66 Max Span, l/360 11.89 18.95 25.91 Panel Thickness: 4 1/8 6 7/8 9 5/8 100 PSF Maximum Span, feet (for single span) Max Span, Stress 13.18 20.36 27.38 Max Span, l/240 10.80 17.22 23.54 Max Span, l/360 9.44 15.04 20.57