SmartLVL 15 Design Guide - Tilling Timber

SmartSplay STRUTTING / HANGING BEAMS SUPPORTINGUNDERPURLINS & CEILING JOISTSAS 4055 WIND CLASSIFICATION N1, N2 & N3Strutting/HangingRoof Void BeamNOTESCeiling JoistsStrutUnderpurlinWAStrutting / HangingA = Ceiling joist spanRoof Load Width =(Span 1 + Span 2)/2Ceiling Load Width = L/2Beam SpanSpan 1150x58 3500 3300 3200 3100 3200 3100 3000 2900 3000 2900 2900 2800OnlyRoof void chamfer on one end onlySpan 2i. Minimum end bearing length = 70 mm.ii. Top edge of strutting beams with D/B >3 shall be laterally restrained as per details on page 6EXAMPLE:single spansheet roofstrutting / hanging beam span = 3500 mmtotal ceiling joist span A = 6000 mmceiling load width = A/2 = 3000 mm = 3 mspan 1 = 3 mspan 2 = 4 mroof load width = (3+4)/2 = 3.5 mEnter table at 3 m ceiling load width, 3.6 m roofload width and read down to span equal to or greaterthan 3500 mmADOPTSmartSplay 15 Roof-void beam200 x 42Ceiling load width (mm) 2400 3000 3600Roof area supported(m 2 )Member size DxB (mm)1.8 2.4 3.0 3.6 1.8 2.4 3.0 3.6 1.8 2.4 3.0 3.6Maximum strutting/hanging beam span for sheet roof (mm)150x42 3100 2900 2800 2700 2900 2800 2700 2600 2700 2600 2500 2400170x42 3500 3400 3300 3100 3300 3200 3100 3000 3100 3000 2900 2800200x42 4000 3900 3800 3700 3800 3800 3700 3600 3700 3600 3500 3400240x42 4700 4600 4500 4400 4400 4400 4300 4200 4200 4200 4100 4000300x42 5600 5500 5300 5200 5300 5200 5100 5000 5000 5000 4900 4800170x58 3900 3700 3600 3600 3700 3600 3500 3400 3500 3400 3300 3200200x58 4400 4300 4200 4100 4200 4100 4000 3900 4000 3900 3800 3800240x58 5100 4900 4800 4700 4800 4700 4600 4500 4600 4500 4400 4400300x58 6000 5900 5800 5700 5700 5600 5500 5400 5400 5400 5300 5200360x58 6600 6600 6600 6500 6500 6400 6400 6300 6200 6200 6100 6000300x75 6300 6200 6100 6000 6000 5900 5900 5800 5800 5700 5600 5600Ceiling load width (mm) 2400 3000 3600Roof area supported(m 2 )Member size DxB (mm)1.8 2.4 3.0 3.6 1.8 2.4 3.0 3.6 1.8 2.4 3.0 3.6Maximum strutting/hanging beam span for tile roof (mm)150x42 2600 2400 2200 2100 2500 2300 2100 2000 2400 2200 2100 2000170x42 3000 2800 2600 2400 2900 2700 2500 2400 2800 2600 2400 2300200x42 3700 3400 3200 3100 3500 3300 3100 3000 3300 3200 3000 2900240x42 4300 4100 3900 3800 4100 3900 3800 3700 4000 3800 3700 3600300x42 5100 4900 4800 4600 4900 4800 4600 4500 4800 4600 4500 4400150x58 2900 2700 2500 2400 2800 2600 2500 2300 2700 2500 2400 2300170x58 3400 3200 3000 2800 3300 3100 2900 2700 3100 2900 2800 2700200x58 4000 3800 3700 3500 3800 3700 3600 3400 3700 3600 3400 3300240x58 4700 4500 4300 4100 4500 4300 4200 4000 4300 4200 4000 3900300x58 5600 5400 5200 5000 5400 5200 5000 4900 5200 5000 4900 4800360x58 6500 6300 6100 5900 6200 6000 5900 5700 6000 5800 5700 5500300x75 5900 5700 5600 5400 5700 5500 5400 5200 5500 5400 5200 5100SmartLVL 15 Design Guide (WA Supplement) 85