INDEX OF W.T.I. BEAMS

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2 INDEX OF W.T.I. BEAMS Contents Beam Type Page General Specification 3-7 Roof Construction Mass 8-9 Engineers Certification 10 Rafters Roof Load of Light Sheet (10kg/m2) 13 Single & Continuous Span Roof Load of Sheet (20kg/m2) 14 Roof Load of Sheet & Ceiling (40Kg/m2) 15 Roof Load of Tiles (70kg/m2) 16 Roof Load of Tiles & Ceiling (90kg/m2) 17 Rafter Overhangs Roof Load of Light Sheet (10kg/m2) 18 Roof Load of Sheet (20kg/m2) 18 Roof Load of Sheet & Ceiling (40kg/m2) 18 Roof Load of Tiles & Ceiling (70kg/m2) 18 Roof Load of Tiles & Ceiling (90kg/m2) 19 Roof Beam Single span, Roof Load of Light Sheet (10kg/m2) 22 Single & Continuous Span Single span, Roof Load of Sheet (20kg/m2) 23 Includes Ridge, Intermediate, Single span, Roof Load of Sheet &Ceiling (40kg/m2) 24 Bressumer, and Single span, Roof Load of Tiles (70kg/m2) 25 Underpurlins. Single span, Roof Load of Tiles & Ceiling (90kg/m2) 26 Continuous Span, Roof Load of Light Sheet (10kg/m2) 27 Continuous Span, Roof Load of Sheet (20kg/m2) 28 Continuous Span, Roof Load of Sheet &Ceiling (40kg/m2) 29 Continuous Span, Roof Load of Tiles (70kg/m2) 30 Continuous Span, Roof Load of Tiles & Ceiling (90kg/m2) 31 Verandah Beam Roof Load of Light Sheet (10kg/m2) 34 Single Span & Roof Load of Sheet (20kg/m2) 34 Continuous Span Roof Load of Sheet & Ceiling (40kg/m2) 35 Roof Load of Tiles & Ceiling (90kg/m2) 35 Lintel Single Span Roof Load of Sheet & Ceiling (40kg/m2) 38 Roof Load of Tiles & Ceiling (90kg/m2) 39 Lintel With TG Roof Load of Sheet & Ceiling (40kg/m2) T.G Set Back 1.8m 42 Single Span Roof Load of Tiles & Ceiling (90kg/m2) T.G Set Back 1.8m 43 Roof Load of Sheet & Ceiling (40kg/m2) T.G Set Back 2.7m 44 Roof Load of Tiles & Ceiling (90kg/m2) T.G Set Back 2.4m 45 Lower Storey Lintel Roof load of Sheet & Ceiling (40 kg/m2). 48 Single Span Roof load of Tiles & Ceiling (90 kg/m2). 48 Supporting Load Bearing Walls plus Floor Load Width 1.8 m Roof load of Sheet & Ceiling (40 kg/m2). 49 Roof load of Tiles & Ceiling (90 kg/m2). 49 Supporting Load Bearing Walls plus Floor Load Width 2.4 m Roof load of Sheet & Ceiling (40 kg/m2). 50 Roof load of Tiles & Ceiling (90 kg/m2). 50 Supporting Load Bearing Walls plus Floor Load Width 3.0 m Page 1

3 INDEX OF W.T.I. BEAMS Contents Beam Type Page Bearer Single Span, Floor Load of Flooring and Ceiling (50kg/m2) 53 Single & Continuous Span Continuous Span, Floor Load of Flooring and Ceiling (50kg/m2) 54 Bearer With Roof Load Roof Load of Sheet & Ceiling (40k/gm2) 57 Single & Continuous Spans Roof Load of Tiles & Ceiling (90kgm2) 60 Floor Load of Flooring and Ceiling (50Kg/m2) Floor Load width of 1200mm Roof Load of Sheet & Ceiling (40kg/m2) 58 Roof Load of Tiles & Ceiling (90kg/m2) 61 Floor Load of Flooring and Ceiling (50kg/m2) Floor Load width of 2100mm Roof Load of Sheet & Ceiling (40kg/m2) 59 Roof Load of Tiles & Ceiling (90kg/m2) 62 Floor Load of Flooring and Ceiling (50kg/m2) Floor Load width of 3000mm Hip Rafter Roof Load of Sheet & Ceiling (40kg/m2) 64 Single Span Roof Load of Tiles & Ceiling (90kg/m2) 64 Floor Joist Floor Load of Flooring and Ceiling (50kg/m2) 67 Single & Continuous Span Hanging Beam Loaded with Ceiling only (20kg/m2) N3 70 Single Span Loaded with Ceiling only (20kg/m2) C2/N5 71 Hanging Strutting Roof Load of Sheet & Ceiling (40kg/m2) N3 74 Beam Single Span Roof Load of Sheet & Ceiling (40kg/m2) C1/N4 75 Roof Load of Tiles & Ceiling (40kg/m2) C2/N5 76 Roof Load of Tiles & Ceiling (90kg/m2) C2/N5 77 Beam With Point Load Roof Load of Sheet (20kg/m2) 80 Single Span Roof Load of Sheet & Ceiling (40kg/m2) 81 Includes Lintels, Counter Roof Load of Tiles (70kg/m2) 82 Beams Strutting Beams Roof Load of Tiles and Ceiling (90kg/m2) 83 Ceiling Joist Ceiling Only (20 kg/m2). 85 Single & Continuous Span Roof Purlins Roof Load of Light Sheet (10kg/m2) 88 Single & Continuous Span Roof Load of Sheet (20kg/m2) 89 Roof Load of Sheet & Ceiling (40kg/m2) 90 Page 2

4 GENERAL SPECIFICATION W.T.I. GL17C RADIATA PINE GLUED LAMINATED BEAMS BRIEF DESCRIPTION W.T.I. GL17 C Name of Manufacturer Warrnambool Timber Industries P.L. C Designates Cambered Beams (built in camber at 600m radius) G L Designates Glued Laminated Timber, 17 refers to standard engineering properties as described in AS.NZS also shown at the start of each section in these tables under the heading of Timber Properties. STANDARD SIZES. W.T.I. GL17 Beams are produced in 2 standard thicknesses. 65mm and 85mm Standard lengths - W.T.I. Beams are manufactured in a continuous process, and can be cut in 0.3m increments in lengths to over 18m. W.T.I. Standard Appearance Grades A Grade suitable for clear finishing. Standard thickness (65mm, 85mm) B Grade suitable for painting or framing applications. Standard thickness (65mm,85mm) Page 3

5 GENERAL SPECIFICATION W.T.I. Laminated beams are manufactured strictly in accordance with AS / NZS : : ( 1998 ). Full descriptions of A, B & C Grades from this standard as follows. Appearance grades The appearance grades relate to the aesthetic appearance of the visible surfaces or the glued laminated members. This classification bears no relationship to structural performance of the member. Appearance Grades A This grade is intended for use in applications where appearance of the member is important and clear or painted finishes are used. All surface voids are filled or repaired. Unless it is specified otherwise, the surfaces shall be sanded to a minimum of 60 grit finish. The following void shall be repaired with inserts and not filled: (a) Holes ( circular in general appearance ) with a diameter in excess of 30mm (b) Holes ( elongated in general appearance ) with dimensions exceeding 40mm x 20mm. (c) Edge checks (elongated ) From 40mm 100mm, exceeding 3 mm wide. Note: Fillers used should be non-shrinking and capable of accepting the finish specified for the members. Appearance Grade B This grade is intended for use in painted applications where surface appearance is important but a machine planed finish is acceptable. The machining shall conform to No. 2 dressed surface grade as defined in AS Occasional skips in the surface are permissible and minor blemishes, voids and manufacturing want shall be acceptable. The outermost laminations shall be free of loose knots and voids. Appearance Grade C This grade is intended for use in application where appearance is not important. All blemishes and voids are acceptable. Where the member is not machined after lay-up, the allowable tolerances for overlap of laminations shall be as detailed in, Figure 2.1 and Table 2.4. (AS/NZS :1998) SERVICE CLASS W.T.I. GL17 C Beams are manufactured using fully waterproof resorcinol based adhesives in both Finger Joints and face bonds, however these manufactured members retain the physical characteristics of the parent timber (Slash Pine) which is classed as a non durable species, unless treated. Treated Beams should be used in service classes applicable to the level of treatment used. Note these tables are suitable for beams maintained in a dry condition (moisture content between 7%, 15%) specialist engineering advice should be sought to obtain beam sizes for use outside the dry range. PRECAMBER W.T.I. GL17 Beams are supplied cambered to a precamber radius of 600m. W.T.I. GL17 Beams can be supplied straight (without camber) on request. Page 4

6 GENERAL SPECIFICATION QUALITY ASSURANCE W.T.I. Beams are manufactured in accordance with AS/NZS as well as Glued Laminated Timber Associations of Australia (GLTAA) Standard GLTAA This process of third party accreditation allows W.T.I. to use the GLTAA quality mark. The GLTAA quality mark on W.T.I.Beams is the design/builders guarantee of quality.. RECOMMENDATIONS FOR HANDLING, ONSITE STORAGE AND PROTECTION OF GLUE LAMINATED TIMBER DURING CONSTRUCTION. 1 INTRODUCTION Glue Laminated Structural Timber Beams ("Glulam") requires specific handling and storage conditions on site. This document has been prepared to ensure the product is maintained in a protected condition to ensure the Finished product performs to specification. This document does not necessarily preclude damage resulting from negligence and other factors beyond the control of the Manufacturer during shipment, handling, storage and placement. accredited member of the GLTAA Strict adherence to therecommendations in this document on Glulam, supplied by anwill ensure the product performs to expectations. Glulam may be supplied to site with various forms of protection, dependant on its final use in the structure. This protection shall be commensurate with the end use of the product. 1 Without timber sealant or plastic wrapping. 2 Without timber sealant but with plastic wrapping. 3 With timber sealant but without plastic wrapping. 4 With timber sealant and plastic wrapping. 2 HANDLING Glulam shall not be dropped, jarred or dragged. Care shall be taken to prevent damage to the finished surfaces in handling, as such treatment may cause damage to the surfaces and edges and possibly structural damage. Lifting or securing of Glulam shall employ the use of webbing slings only. Chains and wire slings shall not be used. Gluelam shall be lifted on edge wherever possible and spreader bars of suitable length used on long members to eliminate the possibility of overstressing the member. Page 5

7 GENERAL SPECIFICATION 3 PROTECTION (ONSITE STORAGE) Members shall be supported with blocking so spaced as to supply uniform and adequate support. If covered storage is not available the members shall be blocked well off the ground at a well drained location. Other Glulam such as reinforced Glulam, curved Glulam fabricated items and other "special application" Glulam shall be handled and stored in accordance with the manufacturer's requirements for that product. DIAGRAM NO 1 SITE STORAGE TARPAULIN GLULAM DUNNAGE DUNNAGE AT EVEN SPACES WELL DRAINED EVEN SURFACE Glulam shall be maintained in a dry condition on site and protected from direct exposure to the weather.if covered storage is not available the members shall be covered with suitable non transparent plastic or tarpaulins. The cover shall be placed to preclude moisture whilst maintaining good air circulation in and around the members. Glulam members that are supplied individually wrapped shall be placed on the dunnage with the wrapping material edge or seal, face down. Refer to diagram 2. DIAGRAM NO:2 SITE STORAGE WATERPROOF WRAPPER EDGE FACED DOWNWARDS WELL DRAINED EVEN SURFACE WATERPROOF WRAPPER CUT TO ALLOW DRAINAGE Page 6

8 GENERAL SPECIFICATION 4 PROTECTION ( FIXED IN POSITION ) Glulam when installed shall be protected from direct exposure to the weather ( especially sunlight and moisture). Methods of protection may be a timber sealant coating or impervious covering/ wrapping. a. Protective timber sealant coating shall inhibit moisture ingress during normal domestic construction period (around 6 weeks ). Should this period be extended or signs that the sealant is no longer performing, renewal of the protective sealant may be necessary. Should the Glulam be cut, checked, bolted or otherwise worked on, renewal of the protective sealer to the exposed or unsealed timber shall be required. b. The impervious wrapper shall be placed with the edge in the underside if possible and shall be slit on the under side to allow moisture to escape. Refer Diagram3. Where supports or intersection members damage the protection, moisture ingress shall be prevented. DIAGRAM NO 3 PROTECTION IN FINAL POSITION. PLASTIC WRAPPING INTERMEDIATE TAPING TO HOLD PLASTIC IN PLACE WATERPROOF WRAPPER CUT TO ALLOW DRAINAGE GLULAM WATER WATERPROOF WRAPPING EDGE FACED DOWNWARDS COLUMN Page 7

9 ROOF CONSTRUCTION MASS Guide For Determination Of Roof Construction Mass TABLE 1 MATERIAL EXAMPLE Approximate Mass/Unit Area(kg/m 2 ) ROOFING Steel sheet 0.05 mm mm 10.0 Aluminium sheet 1.2 m 5.0 Tiles Terra-cotta 58.0 Concrete 54.0 Metal sheet 7.5 BATTENS/PURLINS Unseasoned hardwood :100x38 at 600mm spacing 7.0 :100x50 at 450 mm spacing 12.0 : 50x25 at 330mm spacing 4.0 : 38x75 at 900mm spacing 3.5 Seasoned hardwood : 30x40 at 900mm spacing 1.0 : 85x30 at 600mm spacing 3.0 Seasoned softwood : 35x35 at 330mm spacing 2.0 : 90x35 at 900mm spacing 2.0 Unseasoned softwood :150x38 at 900mm spacing 4.0 :200x50 at 1000mm spacing 6.5 CEILING LINING T. & G. lining boards 12mm softwood mm softwood mm hardwood mm hardwood 12.0 Plywood 12mm softwood 6.5 8mm hardwood 5.0 Plasterboard 10mm mm 10.0 Hardwood 4.8mm mm 5.5 Fibreboard 50mm low density mm high density 20.0 Fibre cement sheet 4.7mm mm 11.0 INSULATION Lightweight insulation plus sarking 1.0 Note 1.The values in the table are provided for general guidance only. Page 8

10 ROOF CONSTRUCTION MASS Generally, as a guide, use the following rules: 10kg/sq.m Light weight roof sheeting only - no ceiling 20kg/sq.m Light weight with light ceiling, or standard roof sheeting with no ceiling. 40kg/sq.m Standard steel roof sheeting with a plasterboard or similar and allowance for insulation 70kg/sq.m Tiled roof only, with no ceiling 90kg/sq.m Tiled roof, concrete or terra cotta, and with a plasterboard or similar weight ceiling and allowance for insulation. As a General Guide for floor loads: 50kg/sq.m This load is generally used throughout the industry for domestic floor loads, and covers standard floor materials, such as timber strip flooring, sheet flooring, and up to general area tiled floors, such as wet areas, etc. It also includes allowance for light timber or steel partition wall framing and sheeting. It does not include any allowance for loadbearing walls, or heavy floor area loads such as 19mm FC sheeting, bedding, and heavy quarry tiles in excess of 12mm thickness. Page 9

11 ENGINEERS CERTIFICATION Page 10

12 RAFTERS Single and Continuous Spans Restraint value for slenderness calculations is 1200 mm, in 10, 20, 40( kg/m 2 ) (Restraint is provide by Roof Battens) Restraint value for slenderness calculations is 600 mm, in 70, 90 ( kg/m 2 ) (Restraint is provided by Tile Battens) K6 factor of 1.0 used. K23 factor applied to bending strength. INCLUDES J2 value of 1.5 used for DL Deflection. 10 kg/m 2 Pre-camber radius of 600m used. 20 kg/m 2 Roof Pitch of 25.0 deg used in load calculations. 40 kg/m 2 N3 WIND AREAS Downdrag loads were ignored. 70 kg/m 2 Total Uplift coefficient was 1.1 for N1 to N4, and 1.6 for C1 to C2. 90 kg/m 2 1: Dead Load = Span / 300 or maximum 20 mm. 2: Roof Live Load = Span / 250 3: Wind Uplift = Span / 150. Timber Properties: Fb = 42 MPa, Elasticity = MPa Density = 650 kg/m3 max, Fs = 3.7 MPa Ft = 21.0 MPa, Fc = 35.0 MPa. Load Cases: 1: Dead Load 2: Roof Live Load 3: Wind Uplift MAX ROOF PITCH = 25 DEGREES Roof pitch used in calculations is 25 degrees for Roof pitches greater than 25 degrees but not exceeding 45 degrees you may multiply rafter span (Plan View ) x 1.28 then use answer to read rafter span as normal. CONTINUOUS SPAN RAFTERS Continuous Rafter may have unequal spans, provided major span does not exceed 1.25 times the length of the minor span, major span length should be used in determining rafter size. Page 11

13 RAFTERS Diagrams for use in determining rafter span ( plan width) for use in rafter tables. Max roof pitch 25 degrees. Single Span Rafter OH OH SPAN SPAN Birdsmouth and overhang details For Rafters Birdsmouthed up to 1/3 of their depth reduce Max Overhang as read from table by 35%. Maximum Overhang Figure 16 Continuous Span Rafter OH Major SPAN SPAN Minor Span Page 12

14 RAFTERS Roof load of Light Sheet (10kg/m2) Roof Pitch 25deg N3 WIND AREAS Single Span Continuous Span Beam Rafter Spacing (m) Beam Rafter Spacing (m) Size Size x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x mm for single span supports, or end supports for continuous members. 45mm for internal supports on continuous members or cantilever supports. Page 13

15 RAFTERS Roof load of Sheet (20kg/m2) Roof Pitch 25deg N3 WIND AREAS Single Span Continuous Span Beam Rafter Spacing (m) Beam Rafter Spacing (m) Size Size x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x mm for single span supports, or end supports for continuous members. 45mm for internal supports on continuous members or cantilever supports. Page 14

16 RAFTERS Roof load of Sheet & Ceiling (40kg/m2) Roof Pitch 25deg N3 WIND AREAS Single Span Continuous Span Beam Rafter Spacing (m) Beam Rafter Spacing (m) Size Size x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x mm for single span supports, or end supports for continuous members. 45mm for internal supports on continuous members or cantilever supports. Page 15

17 RAFTERS Roof load of Tiles (70kg/m2) Roof Pitch 25deg N3 WIND AREAS Single Span Continuous Span Beam Rafter Spacing (m) Beam Rafter Spacing (m) Size Size x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x mm for single span supports, or end supports for continuous members. 45mm for internal supports on continuous members or cantilever supports. Page 16

18 RAFTERS Roof load of Tiles & Ceiling (90kg/m2) Roof Pitch 25deg N3 WIND AREAS Single Span Continuous Span Beam Rafter Spacing (m) Beam Rafter Spacing (m) Size Size x x x x x x x x x x x x x x x x x x x x * x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x mm for single span supports, or end supports for continuous members. 45mm for internal supports on continuous members or cantilever supports. *For continuous spans: denotes member must have a min 65mm bearing length at the internal supports. Page 17

19 RAFTER OVERHANGS Maximum Permissible Overhang (m) Plan Dimension Roof Pitch 25deg N3 WIND AREAS Roof load of Light Sheet (10kg/m2) Roof load of Sheet (20kg/m2) Beam Rafter spacing (m) Beam Rafter spacing (m) Size Size x x x x x x x x x x x x x x x x x x x x x x x x Roof load Sheet & Ceiling (40kg/m2) Roof load of Tiles Only (70kg/m2) Beam Rafter spacing (m) Beam Rafter spacing (m) Size Size x x x x x x x x x x x x x x x x x x x x x x x x Overhangs from these tables are suitable only for rafters without birdsmouths. For rafter with birdsmouths, see figure 16. Page 18

20 RAFTER OVERHANGS Roof load of Tiles & Ceiling (90kg/m2) Beam Rafter spacing (m) Size x x x x x x x x x x x x Overhangs from this table are suitable only for rafters without birdsmouths. For rafter with birdsmouths, see figure 16. Maximum Overhang Birdsmouth and overhang details For Rafters Birdsmouthed up to 1/3 of their depth reduce Max Overhang as read from table by 35% FIGURE 16 Page 19

21 ROOF BEAMS Single and Continuous Spans Restraint value for slenderness calculations is 1200 mm. K6 factor of 1.0 used. K23 factor applied to bending strength. J2 value of 1.5 used for DL Deflection. INCLUDES Pre-camber radius of 600m used. 10 kg/m 2 Roof Pitch of 25.0 deg used in load calculations. 20 kg/m 2 N3 WIND AREAS Downdrag loads were ignored. 40 kg/m 2 Total Uplift coefficient was kg/m 2 Deflection Criteria: 90 kg/m 2 1: Dead Load = Span / 300 or maximum 20 mm. 2: Roof Live Load = Span / 250 3: Wind Uplift = Span / 150. Timber Properties: Fb = 42 MPa, Elasticity = MPa Density = 650 kg/m3 max, Fs = 3.7 MPa Ft = 21.0 MPa, Fc = 35.0 MPa. Load Cases: 1: Dead Load 2: Roof Live Load 3: Wind Uplift Roof Beam table may be used for calculating sizes of - Ridge Beam Intermediate Beam Bressumers Under Purlins MAX ROOF PITCH = 25 DEGREES Roof pitch used in calculations is 25 degrees. For roof pitches greater than 25 degrees but not exceeding 45 degrees you may multiply roof load width x 1.28 then use answer to enter table at correct load width. CONTINUOUS SPAN ROOF BEAM Continuous Roof Beam may have unequal spans, provided major span does not exceed 1.25 times the length of the minor span, major span length should be used in determining roof beam size. Page 20

22 ROOF BEAMS Figure 2 BRESSUMER RIDGE BEAM INTERMEDIATE BEAM To determine Roof Load Width from Figure 2 use formulas below. Roof Load Widths (RLW) Span (S) Ridge Beam RLW = S3+S4 2 Intermediate Beam RLW = S2+S3 Under Purlin 2 Bressumer Beam RLW = S1+S2 For determination of Roof Construction Mass Refer to table 1 on page 2 Page 21

23 ROOF BEAMS Roof load of Light Sheet (10kg/m2) Trusses or 25deg N3 WIND AREAS Single Span Beam Roof Load Width (m) Size x x x x x x x x x x * x x x x x x x x x x x x * 10.2* 525 x * 11.0* 10.6* 560 x * 12.1* 11.6* 11.2* 590 x * 12.5* 12.0* 11.6* Minimum Bearing Length = 45mm for end supports. * For single spans: denotes member must have a min 65mm bearing length at the 2 supports. Page 22

24 ROOF BEAMS Roof load of Std Sheet (20kg/m2) Trusses or 25deg N3 WIND AREAS Single Span Beam Roof Load Width (m) Size x x x x x x x x x x x x x x x x x x x x x x x * 560 x * 11.0* 590 x * 12.0* 11.6* Minimum Bearing Length = 45mm for end supports. * For single spans: denotes member must have a min 65mm bearing length at the 2 supports. Page 23

25 ROOF BEAMS Roof load of Sheet & Plaster Ceiling (40kg/m2) Trusses or 25deg N3 WIND AREAS Single Span Beam Roof Load Width (m) Size x x x x x x x x x * 425 x * 6.9* x x x x x x x x x x x x * 525 x * 9.0* 560 x * 9.9* 9.6* 590 x * 10.8* 10.4* 10.1* Minimum Bearing Length = 45mm for end supports. * For single spans: denotes member must have a min 65mm bearing length at the 2 supports. Page 24

26 ROOF BEAMS Roof load of Roof Tiles (70kg/m2) Trusses or 25deg N3 WIND AREAS Single Span Beam Roof Load Width (m) Size x x x x x x x * 360 x * 5.1* 4.8* 395 x * 5.8* 5.5* 5.2* 425 x * 6.5* 6.1* 5.8* 5.6* x x x x x x x x x * 6.1* 425 x * 6.7* 6.5* 460 x * 7.4* 7.2* 7.0* 495 x * 8.2* 7.9* 7.7* 7.5* 525 x * 8.7* 8.4* 8.1* 7.9* 560 x * 9.6* 9.2* 8.9* 8.6* 8.4# 590 x * 10.5* 10.1* 9.7* 9.4* 9.1# 8.8# Minimum Bearing Length = 45mm for end supports. * For single spans: denotes member must have a min 65mm bearing length at the 2 supports. # For single spans: denotes member must have a min 85mm bearing length at the 2 supports. Page 25

27 ROOF BEAMS Roof load of Tiles & Plaster Ceiling (90kg/m2) Trusses or 25deg N3 WIND AREAS Single Span Beam Roof Load Width (m) Size x x x x x x * 330 x * 4.2* 4.0* 360 x * 5.1* 4.8* 4.6* 4.4* 395 x * 5.8* 5.5* 5.2* 4.9* 4.7* 425 x * 6.5* 6.1* 5.8* 5.5* 5.3* 5.0* x x x x x x x * 260 x * 5.4* 5.1* 395 x * 6.1* 5.9* 5.6* 425 x * 6.7* 6.5* 6.3* 6.0* 460 x * 7.5* 7.2* 7.0* 6.8* 6.5* 495 x * 8.0* 7.7* 7.5* 7.2# 7.0# 525 x * 8.7* 8.4* 8.1* 7.9* 7.6# 7.4# 560 x * 9.7* 9.3* 8.9* 8.6* 8.3# 8.1# 7.8# 590 x * 10.2* 9.8* 9.4* 9.1# 8.8# 8.5# 8.2# Minimum Bearing Length = 45mm for end supports. * For single spans: denotes member must have a min 65mm bearing length at the 2 supports. # For single spans: denotes member must have a min 85mm bearing length at the 2 supports. Page 26

28 ROOF BEAMS Roof load of Light Sheet (10kg/m2) Trusses or 25deg N3 WIND AREAS Continuous Span Beam Roof Load Width (m) Size x x x x x x * 330 x * 6.4* 6.2* 5.9* 360 x * 7.7* 7.3* 7.0* 6.7* 6.5# 395 x * 8.9* 8.4* 8.0# 7.7# 7.4# 7.1# 425 x * 10.3* 9.6* 9.1# 8.6# 8.3# 7.9# 7.7# x x x x x x x * 260 x * 7.7* 7.4* 395 x * 9.2* 8.8* 8.4* 8.1* 425 x * 10.4* 9.9* 9.5* 9.1# 8.8# 460 x * 11.9* 11.3* 10.7# 10.3# 9.9# 9.5# 495 x * 13.7* 12.9* 12.2# 11.6# 11.1# 10.6# 10.2# 525 x * 15.0* 14.6* 13.7# 12.9# 12.3# 11.7# 11.3# 10.6# 560 x * 15.0* 15.0# 14.6# 13.8# 13.1# 12.4# 11.4# 10.6# 590 x * 15.0# 15.0# 15.0# 14.5# 13.6# 12.4# 11.4# 10.6# Minimum Bearing Length = 45mm for end supports, and 65mm for internal supports. * For continuous spans: member must have a min 85mm bearing length at the internal supports. # For continuous spans: member must have a min 115mm bearing length at the internal supports. Page 27

29 ROOF BEAMS Roof load of Std Sheet (20kg/m2) Trusses or 25deg N3 WIND AREAS Continuous Span Beam Roof Load Width (m) Size x x x x x x * 330 x * 6.4* 6.1* 360 x * 7.5* 7.2* 6.9* 6.6# 395 x * 9.2* 8.7* 8.3* 7.9# 7.6# 7.3# 425 x * 9.9* 9.4* 8.9# 8.5# 8.2# 7.8# x x x x x x x x * 7.5* 395 x * 9.1* 8.7* 8.3* 425 x * 10.7* 10.2* 9.8* 9.3# 8.9# 460 x * 12.3* 11.6* 11.1* 10.6# 10.1# 9.6# 495 x * 14.2* 13.3* 12.5# 11.9# 11.3# 10.8# 10.3# 525 x * 15.0* 14.1# 13.3# 12.7# 12.0# 11.5# 10.8# 560 x * 15.0* 15.0* 15.0# 14.2# 13.5# 12.8# 11.8# 10.8# 590 x * 15.0* 15.0# 15.0# 14.7# 14.0# 12.9# 11.8# 10.8# Minimum Bearing Length = 45mm for end supports, and 65mm for internal supports. * For continuous spans: member must have a min 85mm bearing length at the internal supports. # For continuous spans: member must have a min 115mm bearing length at the internal supports. Page 28

30 ROOF BEAMS Roof load of Sheet & Plaster Ceiling (40kg/m2) Trusses or 25deg N3 WIND AREAS Continuous Span Beam Roof Load Width (m) Size x x x x x x * 5.2* 5.0* 330 x * 6.4* 6.1* 5.8* 5.5# 360 x * 7.4* 7.0* 6.6# 6.3# 6.0# 395 x * 8.6* 8.1* 7.7# 7.3# 6.9# 6.6# 425 x * 9.9* 9.3# 8.7# 8.2# 7.8# 7.4# 7.0# x x x x x x x * 6.3* 260 x * 7.6* 7.2* 6.9* 395 x * 9.2* 8.7* 8.3* 7.9# 7.6# 425 x * 10.5* 9.9* 9.4* 8.9# 8.5# 8.1# 460 x * 12.2* 11.4* 10.7# 10.1# 9.6# 9.2# 8.8# 495 x * 13.1* 12.2# 11.5# 10.9# 10.3# 9.9# 9.0# 525 x * 14.9* 13.9# 13.0# 12.2# 11.5# 10.8# 9.8# 9.0# 560 x * 15.0* 14.6# 13.8# 13.0# 12.0# 10.8# 9.8# 9.0# 590 x * 15.0* 15.0# 15.0# 14.3# 13.3# 11.9# 10.8# 9.8# 9.0# Minimum Bearing Length = 45mm for end supports, and 65mm for internal supports. * For continuous spans: member must have a min 85mm bearing length at the internal supports. # For continuous spans: member must have a min 115mm bearing length at the internal supports. Page 29

31 ROOF BEAMS Roof load of Roof Tiles (70kg/m2) Trusses or 25deg N3 WIND AREAS Continuous Span Beam Roof Load Width (m) Size x x x x * 260 x * 4.0* 3.8* 3.6* 295 x * 5.0* 4.7* 4.5* 4.3# 4.1# 330 x * 6.0* 5.6* 5.3# 5.0# 4.8# 4.6# 360 x * 7.0* 6.5# 6.1# 5.8# 5.5# 5.2# 4.7# 395 x * 8.3* 7.7# 7.1# 6.7# 6.3# 5.7# 5.2# 4.7# 425 x * 9.8* 8.9# 8.2# 7.7# 7.1# 6.3# 5.7# 5.2# 4.7# x x x x x * 295 x * 5.1* 4.9* 4.7* 330 x * 6.4* 6.0* 5.7* 5.4# 5.2# 260 x * 7.4* 7.0* 6.6# 6.2# 5.9# 5.7# 395 x * 8.7* 8.1* 7.6# 7.2# 6.8# 6.5# 6.1# 425 x * 10.1* 9.4* 8.7# 8.2# 7.7# 7.3# 6.7# 6.1# 460 x * 10.9* 10.1# 9.4# 8.9# 8.2# 7.4# 6.7# 6.1# 495 x * 14.2* 12.8* 11.7# 10.9# 10.1# 9.2# 8.2# 7.4# 6.7# 6.1# 525 x * 14.8* 13.5# 12.4# 11.5# 10.3# 9.1# 8.1# 7.3# 6.7# 6.1# 560 x * 15.0* 15.0* 14.2# 13.1# 11.8# 10.3# 9.1# 8.1# 7.3# 6.6# 6.1# 590 x * 15.0* 15.0# 14.7# 13.6# 11.8# 10.3# 9.1# 8.1# 7.3# 6.6# 6.0# Minimum Bearing Length = 45mm for end supports, and 65mm for internal supports. * For continuous spans: member must have a min 85mm bearing length at the internal supports. # For continuous spans: member must have a min 115mm bearing length at the internal supports. Page 30

32 ROOF BEAMS Roof load of Tiles & Plaster Ceiling (90kg/m2) Trusses or 25deg N3 WIND AREAS Continuous Span Beam Roof Load Width (m) Size x x x x * 3.0* 2.9* 260 x * 4.0* 3.8* 3.6* 3.4# 3.2# 295 x * 4.8* 4.5* 4.3# 4.0# 3.9# 3.7# 330 x * 5.8* 5.4# 5.0# 4.8# 4.5# 4.2# 3.9# 360 x * 6.8* 6.3# 5.9# 5.5# 5.2# 4.6# 4.2# 3.9# 395 x * 9.2* 8.2* 7.5# 6.9# 6.4# 5.8# 5.1# 4.6# 4.2# 3.8# 425 x * 9.8* 8.8# 8.0# 7.4# 6.5# 5.8# 5.1# 4.6# 4.2# 3.8# x x x x * 260 x * 3.9* 3.7* 295 x * 5.1* 4.9* 4.6* 4.4# 4.2# 330 x * 6.1* 5.7* 5.4# 5.2# 4.9# 4.7# 260 x * 7.2* 6.7# 6.3# 5.9# 5.6# 5.4# 5.0# 395 x * 8.5* 7.8# 7.3# 6.9# 6.5# 6.0# 5.5# 5.0# 425 x * 10.0* 9.1# 8.4# 7.8# 7.4# 6.7# 6.0# 5.5# 5.0# 460 x * 12.0* 10.8# 9.8# 9.1# 8.4# 7.4# 6.6# 6.0# 5.4# 5.0# 495 x * 13.7* 12.9* 11.6# 10.6# 9.6# 8.4# 7.4# 6.6# 6.0# 5.4# 5.0# 525 x * 15.0* 14.3* 13.5# 12.2# 11.2# 9.6# 8.4# 7.4# 6.6# 6.0# 5.4# 5.0# 560 x * 15.0* 15.0# 14.2# 12.9# 11.2# 9.6# 8.3# 7.4# 6.6# 6.0# 5.4# 5.0# 590 x * 15.0* 15.0* 15.0# 14.7# 13.3# 11.1# 9.5# 8.3# 7.4# 6.6# 5.9# 5.4# 4.9# Minimum Bearing Length = 45mm for end supports, and 65mm for internal supports. * For continuous spans: member must have a min 85mm bearing length at the internal supports. # For continuous spans: member must have a min 115mm bearing length at the internal supports. Page 31