Strutting Beams Supporting Underpurlins Only

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2 Strutting Beams Supporting Underpurlins Only fan struts strutting beam roof area supported by strutting beam = L/2 x B/2 block underpurlin strutting beam strut L = total rafter span strutting beam span B = total span of underpurlin 2

3 Strutting Beams Supporting Underpurlins Only WInd Classification N3 Limits on deflection Dead load: span/300 or 20mm max. Live load: span/250 or 20mm max. e-beam Section D X B (mm) Roof Area supported (m 2 ) Maximum Span (m) Sheet Roof 150 x 45# NS 150 x /150 x 35# x 45# x x 63# /200 x 35# /200 x 45# x 45# x 63# /240 x 45# x x x x x x x x x Tile Roof 150 x 45# NS NS NS NS NS NS 150 x NS NS NS NS 2/150 x 35# NS NS NS 170 x 45# NS NS 170 x NS 200 x 63# /200 x 35# /200 x 45# x 45# x 63# /240 x 45# x x x x x x x x x e-maximus LVL 1. All sections with depth to breadth ratio greater than three must be laterally restrained against rollover at mid-span, strutting points and at supports as per AS A minimum initial clearance of 25mm to ceiling framing member shall be provided at mid-span. 3. Bearing lengths at end supports shall not be less than 65mm. 4. Beam ends may be chamfer cut to a minimum depth of 90mm or D/3, whichever is the greater. 3

4 Counter Beams Supporting Hanging Beams counter beam CLW = ( H 1 + H 2 ) / 2 hanging beam spans H 1 H 2 counter beam span hanging beam 4

5 Counter Beams Supporting Hanging Beams WInd Classification N3 Limits on deflection Dead load: span/300 or 15mm max. Live load: span/270 or 15mm max. e-beam Section D X B (mm) Ceiling Load Width CLW (m) Maximum Span (m) 150 x x x x x x x x x x x x x x x x x x x x e-maximus LVL 1. Average Hanging Beam Span = (H1 + H2)/2, where H1 and H2 are the spans of the hanging beams on each side of the Strutting-Counter beam. 2. All sections with depth to breath ratio exceeding three must be restrained against rollover as per AS Bearing lengths at end supports to be not less than 65mm. 4. Beam ends may be chamfer cut to a minimum depth of 90mm or D/3, whichever is greater. 5

6 Strutting Hanging Beams Supporting Underpurlins and Ceiling Joists strut L = total rafter span underpurlin strutting-hanging beam W = total ceiling joist span both sides of the strutting beam roof load width (RLW) = L/2 ceiling load width (CLW) = W/2 6

7 Strutting Hanging Beams Supporting Underpurlins and Ceiling Joists e-beam Section D X B (mm) Ceiling Load Width CLW (m) WInd Classification N3 Limits on deflection Dead load: span/300 or 12mm max. Live load: span/300 or 12mm max Roof Load Width RLW for underpurlin (m) Maximum Span for Sheet Roof & Ceiling (m) 170 x /170 x /170 x x /200 x /200 x x x /240 x x x /300 x x x x x x x x x x Maximum Span for Tile Roof & Ceiling (m) 170 x /170 x /170 x x /200 x /200 x x x /240 x x x /300 x x x x x x x x x x e-maximus LVL 1. All sections with depth to breath ratio s exceeding three must be restrained against rollover as per AS Roof Load Width RLW for the underpurlin is the average of the rafter spans either side of the underpurlin supported by the Strutting-Hanging beam. 3. Underpurlin span assumed to be one-half of the Strutting-Hanging beam span. 4. Ceiling Load width CLW is the average of the ceiling joist spans either side of the Strutting-Hanging beam. 5. Bearing lengths at end supports to be not less than 65mm. 6. Beam ends may be chamfer cut to a minimum depth of 90mm or D/3, whichever is greater. 7

8 Strutting Counter Beams Supporting Underpurlins and Hanging Beams strutting-counter beam average hanging beam span = ( H 1 + H 2 ) / 2 hanging beam spans H 1 H 2 roof area supported by strutting beam = L/2 x B/2 underpurlin strut hanging beam L = total rafter span strutting beam span B = total span of underpurlin 8

9 Strutting Counter Beams Supporting Underpurlins and Hanging Beams WInd Classification N3 Limits on deflection Dead load: span/300 or 12mm max. Live load: span/300 or 12mm max. e-beam Section D X B (mm) Maximum Span for Sheet Roof & Ceiling (m) Average Hanging Beam Span (m) Roof area supported (m 2 ) x /170 x /170 x x /200 x /200 x x x /240 x x x x x x x x x x Maximum Span for Tile Roof & Ceiling (m) 170 x NS NS 2/170 x /170 x x /200 x /200 x x x /240 x x x x x x x x x x e-maximus LVL 1. Average Hanging Beam Span = (H1 + H2)/2, where H1 and H2 are the spans of the hanging beams on each side of the Strutting-Counter beam. 2. All sections with depth to breath ratio exceeding three must be restrained against rollover as per AS Bearing lengths at end supports to be not less than 65mm. 4. Beam ends may be chamfer cut to a minimum depth of 90mm or D/3, whichever is greater. 9

10 Roof Beams Ridge, Intermediate, Eave and Bressummer Beams strut L = total rafter span underpurlin strutting-hanging beam W = total ceiling joist span both sides of the strutting beam roof load width (RLW) = L/2 ceiling load width (CLW) = W/2 10

11 Ridge Beam ridge beam rafter Intermediate Beam rafter intermediate beam Eave Beam rafter eave beam Bressumer trussed roof bressumer 11

12 Roof Beams Ridge, Intermediate, Eave and Bressummer Beams e-beam Section D X B (mm) Maximum Single Span (m) Sheet Roof and Ceiling Roof Load Width RLW (m) WInd Classification N3 Limits on deflection Dead load: span/300 Live load: span/250 Wind load: span/ x x x x x x x x x x x x x x x x x x x x Maximum Continuous Span (m) 150 x x x x x x x x x x x x x x x x x x x x 82 NS NS e-maximus LVL For Tile Roof and Ceiling, see next page. 12

13 Roof Beams Ridge, Intermediate, Eave and Bressummer Beams e-beam Section D X B (mm) Maximum Single Span (m) Tile Roof and Ceiling Roof Load Width RLW (m) x x x x x x x x x x x x x x x x x x x x Maximum Continuous Span (m) 150 x x x x x x x x x x x x x x x x x x e-maximus LVL WInd Classification N3 Limits on deflection Dead load: span/300 Live load: span/250 Wind load: span/ The above Span Tables for Roof Beams assume no lateral restraint to the bottom edge under wind uplift conditions. 2. Bearing lengths at end supports to be not less than 65mm. 13

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16 specification Veneer Thickness Constant through the product thickness Species Plantation timber Joints Outer 2 plies are scarf jointed Inner plies scarf and/or butt jointed Moisture Content 8% 15% (at time of despatch) Dimensional Tolerances Available on request Straightness Available on request Density 650 kg/m³ (approximately) Adhesive Phenolic AS Bond Type A AS/NZS Joint Group JD3 for nails, bolts and screws Finish Pre-primed to provide a defect free surface ready to top coat without any further preparation. Edges arrised. Branding Each piece of Wesbeam LVL is branded as least once with the product name for identification and evidence of compliance with manufacturing control standards Storage Store on level bearers at maximum 1800mm centres well clear of the ground, and cover to keep dry but allow ventilation Source Plantation timber certified to AS /PEFC Condition Treated to H3 Level as per AS/NZS Wesbeam Pty Limited ABN Date of publication: August 2016 PO Box 217 Wanneroo, WA Pederick Road Neerabup, WA 6031 Australia T (08) F (08) E wesbeam@wesbeam.com W