binderholz Mass Timber Manual

Layup BBS 125 FLOOR LIVE LOAD (psf) - with 3“ concrete topping 40 Residential 50 Office/Classroom 75 Mechanical Room 100 Asembly/Storage 150 Library Vibration Deflection L/240 Vibration Deflection L/240 Vibration Deflection L/240 Vibration Deflection L/240 Vibration Deflection L/240 80-3s 3.15 9.7 8.6 9.7 8.4 9.7 7.9 9.7 7.5 9.7 6.8 90-3s 3.54 10.9 10.0 10.9 9.7 10.9 9.2 10.9 8.7 10.9 8.0 100-3s 3.94 11.8 11.1 11.8 10.8 11.8 10.2 11.8 9.7 11.8 8.9 120-3s 4.72 13.5 13.2 13.5 12.8 13.5 12.1 13.5 11.5 13.5 10.6 100-5s 3.94 11.2 10.5 11.2 10.2 11.2 9.6 11.2 9.1 11.2 8.4 120-5s 4.72 12.4 12.0 12.4 11.7 12.4 11.0 12.4 10.5 12.4 9.6 140-5s 5.51 15.1 15.1 15.1 14.8 15.1 14.0 15.1 13.3 15.1 12.3 150-5s 5.91 15.8 16.1 15.8 15.7 15.8 14.9 15.8 14.2 15.8 13.1 160-5s 6.30 16.6 17.0 16.6 16.6 16.6 15.8 16.6 15.0 16.6 13.9 180-5s 7.09 17.7 18.6 17.7 18.2 17.7 17.2 17.7 16.4 17.7 15.2 200-5s 7.87 18.8 20.1 18.8 19.6 18.8 18.6 18.8 17.8 18.8 16.4 220-5s 8.66 21.1 23.0 21.1 22.5 21.1 21.3 21.1 20.4 21.1 18.9 240-5s 9.45 22.2 24.5 22.2 24.0 22.2 22.8 22.2 21.8 22.2 20.2 260-7s 10.24 23.9 26.8 23.9 26.2 23.9 24.9 23.9 23.9 23.9 22.2 280-7s 11.02 24.4 27.6 24.4 27.0 24.4 25.7 24.4 24.6 24.4 22.8 1) Table values are to be used for preliminary design only. 2) For structural panel properties see page 5. 3) Span table assumes dry service conditions. 4) CLT BBS is NOT an isotropic material. Present values must only be used for bending of panels in the major strength axis. 5) Spans shown represent distance between the center lines of supports and are to be used for preliminary design only. 6) Span table above includes panel self weight, 25 psf for concrete topping, plus 15 psf miscellaneous dead load. 7) Engineer to ensure that L/240 deflection limit is appropriate for intended use. 8) Total length is limited to max. production length (max. length for standard 40‘ container shipping is limited to 39‘) 9) The highlighted values show the decisive case (only vibration and deflection, no consideration of bending and shear stresses). 10) Deflection L/240 is considerd for total load, inkl. creep factor (2.0) according CLT Handbook, US Edition, FPInnovations. 11) For floors with concrete topping, where the concrete is applied directly to the CLT panel, weight of concrete is ignored in the calculation of vibration controlled span limit, provided the area density of the topping is not greater than twice the bare CLT BBS floor area density. TABLE 5 - FLOOR PANEL LOAD TABLE, WITH 3“ CONCRETE TOPPING MAXIMUM SPAN (FT) single span