ROOF BEAMS - Warrnambool Timber Industries beams.pdf · 18 ROOF BEAMS Single and Continuous Spans Restraint value for slenderness calculations is 1200 mm. K6 factor of 1.0 used. K23
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17
ROOF BEAMS
18
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 0m used. 10 kg/m2
Roof Pitch of 25.0 deg used in load calculations. 20 kg/m2
N3 WIND AREAS Downdrag loads were ignored. 40 kg/m2
Total Uplift coefficient was 1.6 70 kg/m2
Deflection Criteria: 90 kg/m2
1: Dead Load = Span / 300 or maximum 20 mm.
2: Roof Live Load = Span / 250
3: Wind Uplift = Span / 150.
Timber Properties: Fb = 11 MPa, Elasticity = 13300 MPa
Density = 600 kg/m3, Fs = 1.25 MPa
Ft = 5.2 MPa, Fc = 11 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.
19
ROOF BEAMS
Figure 2
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
2
For determination of Roof Construction Mass Refer to table 1 on page 6
RIDGE BEAM
INTERMEDIATE BEAM
BRESSUMER
20
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 3.4 3.3 3.0 2.8 2.6 2.3 2.1 1.9 1.8 1.7 1.6 1.5 1.5 1.4
168 x 38 4.9 4.4 4.0 3.7 3.5 3.1 2.8 2.6 2.4 2.3 2.2 2.1 2.0 1.9
210 x 38 6.2 5.5 5.0 4.6 4.3 3.9 3.5 3.3 3.0 2.9 2.7 2.6 2.5 2.4
252 x 38 7.1 6.3 5.8 5.3 5.0 4.5 4.1 3.8 3.5 3.3 3.2 3.0 2.9 2.8
294 x 38 7.9 7.0 6.4 5.9 5.5 4.9 4.5 4.2 3.9 3.7 3.5 3.4 3.2 3.1*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 3.5 3.4 3.1 2.9 2.7 2.4 2.2 2.0 1.9 1.8 1.7 1.6 1.5 1.5
168 x 42 5.2 4.6 4.2 3.9 3.6 3.2 3.0 2.7 2.6 2.4 2.3 2.2 2.1 2.0
210 x 42 6.5 5.8 5.3 4.9 4.6 4.1 3.7 3.4 3.2 3.0 2.9 2.7 2.6 2.5
252 x 42 7.4 6.8 6.2 5.8 5.4 4.8 4.4 4.1 3.8 3.6 3.4 3.2 3.1 3.0
294 x 42 8.2 7.6 7.0 6.4 6.0 5.4 4.9 4.6 4.3 4.0 3.8 3.6 3.5 3.4
336 x 42 9.0 8.3 7.6 7.0 6.6 5.9 5.4 5.0 4.7 4.4 4.2 4.0 3.8* 3.7*
378 x 42 9.7 8.9 8.1 7.5 7.0 6.3 5.7 5.3 5.0 4.7 4.5* 4.3* 4.1* 3.9*
420 x 42 10.4 9.3 8.5 7.9 7.3 6.6 6.0 5.6 5.2 5.0* 4.7* 4.5* 4.3* 4.2*
Roof load of Light Sheet (10kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
21
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 4.4 4.2 3.9 3.6 3.4 3.0 2.8 2.5 2.4 2.2 2.1 2.0 1.9 1.9
168 x 65 6.0 5.6 5.2 4.9 4.5 4.1 3.7 3.4 3.2 3.0 2.8 2.7 2.6 2.5
210 x 65 7.5 7.0 6.6 6.1 5.7 5.1 4.6 4.3 4.0 3.8 3.6 3.4 3.3 3.1
252 x 65 8.6 8.3 7.9 7.4 6.9 6.1 5.6 5.2 4.8 4.5 4.3 4.1 3.9 3.8
294 x 65 9.4 9.2 8.9 8.6 8.0 7.2 6.5 6.0 5.6 5.3 5.0 4.8 4.6 4.4
336 x 65 10.3 10.0 9.7 9.5 9.2 8.2 7.5 6.9 6.5 6.1 5.8 5.5 5.2 5.0
378 x 65 11.1 10.8 10.5 10.2 10.0 9.1 8.3 7.7 7.2 6.8 6.4 6.1 5.9* 5.6*
420 x 65 11.8 11.5 11.2 11.0 10.8 9.9 9.0 8.3 7.8 7.3 7.0* 6.6* 6.4* 6.1*
462 x 65 12.5 12.2 11.9 11.7 11.5 10.6 9.6 8.9 8.3 7.9* 7.5* 7.1* 6.8* 6.5*
504 x 65 13.2 12.9 12.6 12.3 12.1 11.2 10.2 9.4 8.8* 8.3* 7.9* 7.5* 7.2* 6.9*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 4.9 4.6 4.3 4.1 3.9 3.5 3.2 2.9 2.7 2.6 2.4 2.3 2.2 2.1
168 x 85 6.6 6.1 5.8 5.5 5.2 4.7 4.2 3.9 3.7 3.4 3.3 3.1 3.0 2.9
210 x 85 7.9 7.6 7.2 6.8 6.5 5.8 5.3 4.9 4.6 4.3 4.1 3.9 3.7 3.6
252 x 85 8.9 8.6 8.4 8.2 7.9 7.0 6.4 5.9 5.5 5.2 4.9 4.7 4.5 4.3
294 x 85 9.8 9.5 9.3 9.1 8.9 8.2 7.5 6.9 6.5 6.1 5.8 5.5 5.3 5.0
336 x 85 10.6 10.3 10.1 9.9 9.7 9.3 8.6 7.9 7.4 7.0 6.6 6.3 6.0 5.8
378 x 85 11.4 11.1 10.9 10.7 10.5 10.1 9.7 8.9 8.3 7.9 7.4 7.1 6.8 6.5
420 x 85 12.1 11.9 11.6 11.4 11.2 10.8 10.5 9.9 9.3 8.7 8.3 7.9 7.5 7.2*
462 x 85 12.8 12.6 12.3 12.1 11.9 11.5 11.2 10.9 10.2 9.6 9.1* 8.7* 8.3* 8.0*
504 x 85 13.5 13.3 13.0 12.8 12.6 12.2 11.9 11.6 11.0 10.4* 9.8* 9.4* 9.0* 8.6*
546 x 85 14.2 13.9 13.7 13.4 13.2 12.8 12.5 12.2 11.7* 11.0* 10.4* 9.9* 9.5* 9.1*
588 x 85 14.8 14.5 14.3 14.0 13.8 13.5 13.1 12.8 12.3* 11.6* 11.0* 10.5* 10.0* 9.6*
Roof load of Light Sheet (10kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
22
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 5.4 5.0 4.7 4.5 4.3 4.0 3.6 3.3 3.1 2.9 2.8 2.6 2.5 2.4
168 x 110 7.1 6.7 6.3 6.0 5.7 5.3 4.8 4.5 4.2 3.9 3.7 3.5 3.4 3.3
210 x 110 8.2 7.9 7.7 7.4 7.1 6.6 6.1 5.6 5.2 4.9 4.7 4.4 4.3 4.1
252 x 110 9.1 8.9 8.7 8.5 8.3 7.9 7.3 6.8 6.3 5.9 5.6 5.4 5.1 4.9
294 x 110 10.0 9.8 9.6 9.4 9.2 8.9 8.6 7.9 7.4 6.9 6.6 6.3 6.0 5.8
336 x 110 10.9 10.6 10.4 10.2 10.1 9.7 9.5 9.0 8.4 8.0 7.5 7.2 6.9 6.6
378 x 110 11.7 11.4 11.2 11.0 10.8 10.5 10.2 10.0 9.5 9.0 8.5 8.1 7.7 7.4
420 x 110 12.4 12.2 12.0 11.8 11.6 11.2 11.0 10.7 10.5 10.0 9.4 9.0 8.6 8.3
462 x 110 13.1 12.9 12.7 12.5 12.3 11.9 11.7 11.4 11.2 10.9 10.4 9.9 9.5 9.1*
504 x 110 13.8 13.6 13.3 13.1 13.0 12.6 12.3 12.1 11.8 11.6 11.4 10.8* 10.4* 9.9*
546 x 110 14.4 14.2 14.0 13.8 13.6 13.3 13.0 12.7 12.5 12.2 12.0* 11.7* 11.2* 10.8*
588 x 110 15.1 14.8 14.6 14.4 14.2 13.9 13.6 13.3 13.1 12.8 12.6* 12.4* 12.1* 11.6*
630 x 110 15.7 15.4 15.2 15.0 14.8 14.5 14.2 13.9 13.7 13.4* 13.2* 13.0* 12.8* 12.4*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 5.7 5.3 5.0 4.7 4.5 4.2 3.9 3.6 3.4 3.2 3.0 2.9 2.8 2.6
168 x 130 7.3 7.0 6.6 6.3 6.0 5.6 5.2 4.9 4.5 4.3 4.1 3.9 3.7 3.5
210 x 130 8.3 8.1 7.9 7.7 7.5 7.0 6.6 6.1 5.7 5.4 5.1 4.8 4.6 4.4
252 x 130 9.3 9.1 8.9 8.7 8.6 8.3 7.9 7.4 6.9 6.5 6.1 5.8 5.6 5.4
294 x 130 10.2 10.0 9.8 9.6 9.4 9.2 8.9 8.6 8.0 7.6 7.2 6.8 6.5 6.3
336 x 130 11.1 10.8 10.6 10.4 10.3 10.0 9.7 9.5 9.2 8.7 8.2 7.8 7.5 7.2
378 x 130 11.8 11.6 11.4 11.2 11.1 10.8 10.5 10.2 10.0 9.8 9.3 8.8 8.4 8.1
420 x 130 12.6 12.4 12.2 12.0 11.8 11.5 11.2 11.0 10.8 10.6 10.3 9.8 9.4 9.0
462 x 130 13.3 13.1 12.9 12.7 12.5 12.2 11.9 11.7 11.5 11.2 11.1 10.8 10.3 9.9
504 x 130 14.0 13.7 13.5 13.4 13.2 12.9 12.6 12.3 12.1 11.9 11.7 11.5 11.3 10.8*
546 x 130 14.6 14.4 14.2 14.0 13.8 13.5 13.2 13.0 12.8 12.5 12.3 12.2 12.0* 11.7*
588 x 130 15.2 15.0 14.8 14.6 14.5 14.2 13.9 13.6 13.4 13.2 13.0 12.8 12.6* 12.4*
630 x 130 15.8 15.6 15.4 15.2 15.1 14.8 14.5 14.2 14.0 13.8 13.6 13.4* 13.2* 13.0*
Roof load of Light Sheet (10kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
23
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 3.4 3.2 3.0 2.8 2.7 2.4 2.2 2.0 1.9 1.7 1.7 1.6 1.5 1.4
168 x 38 4.5 4.2 3.9 3.8 3.6 3.2 2.9 2.7 2.5 2.3 2.2 2.1 2.0 1.9
210 x 38 5.5 5.1 4.9 4.7 4.4 3.9 3.6 3.3 3.1 2.9 2.8 2.7 2.5 2.4
252 x 38 6.4 6.1 5.8 5.4 5.1 4.5 4.1 3.8 3.6 3.4 3.2 3.1 2.9 2.8
294 x 38 7.1 6.8 6.5 6.0 5.7 5.1 4.6 4.3 4.0 3.8 3.6 3.4 3.3 3.2
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 3.5 3.3 3.1 2.9 2.8 2.5 2.3 2.1 2.0 1.8 1.7 1.7 1.6 1.5
168 x 42 4.6 4.3 4.1 3.9 3.7 3.3 3.0 2.8 2.6 2.5 2.3 2.2 2.1 2.0
210 x 42 5.7 5.3 5.0 4.8 4.7 4.2 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6
252 x 42 6.5 6.2 6.0 5.7 5.5 5.0 4.5 4.2 3.9 3.7 3.5 3.3 3.2 3.1
294 x 42 7.3 7.0 6.7 6.5 6.2 5.5 5.1 4.7 4.4 4.1 3.9 3.7 3.6 3.4
336 x 42 8.0 7.6 7.4 7.1 6.8 6.0 5.5 5.1 4.8 4.5 4.3 4.1 3.9 3.8*
378 x 42 8.7 8.3 8.0 7.7 7.2 6.5 5.9 5.5 5.1 4.8 4.6 4.4* 4.2* 4.1*
420 x 42 9.3 8.9 8.6 8.1 7.6 6.8 6.2 5.7 5.4 5.1 4.8* 4.6* 4.4* 4.3*
Roof load of Sheet (20kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
24
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 4.4 4.1 3.9 3.7 3.5 3.1 2.8 2.6 2.4 2.3 2.2 2.1 2.0 1.9
168 x 65 5.7 5.4 5.1 4.8 4.7 4.2 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6
210 x 65 6.7 6.4 6.2 6.0 5.8 5.2 4.8 4.4 4.1 3.9 3.7 3.5 3.3 3.2
252 x 65 7.6 7.3 7.1 6.8 6.6 6.3 5.7 5.3 5.0 4.7 4.4 4.2 4.0 3.9
294 x 65 8.5 8.1 7.9 7.6 7.4 7.1 6.7 6.2 5.8 5.5 5.2 4.9 4.7 4.5
336 x 65 9.3 8.9 8.6 8.4 8.2 7.8 7.5 7.1 6.6 6.3 5.9 5.6 5.4 5.2
378 x 65 10.0 9.7 9.4 9.1 8.9 8.5 8.2 7.9 7.4 7.0 6.6 6.3 6.0 5.8*
420 x 65 10.8 10.4 10.1 9.8 9.5 9.1 8.8 8.5 8.0 7.6 7.2 6.8* 6.5* 6.3*
462 x 65 11.5 11.1 10.7 10.4 10.2 9.8 9.4 9.1 8.6 8.1 7.7* 7.3* 7.0* 6.7*
504 x 65 12.1 11.7 11.4 11.1 10.8 10.4 10.0 9.7 9.1 8.6* 8.1* 7.7* 7.4* 7.1*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 4.7 4.4 4.2 4.0 3.9 3.6 3.3 3.0 2.8 2.6 2.5 2.4 2.3 2.2
168 x 85 6.1 5.7 5.5 5.3 5.1 4.7 4.4 4.0 3.8 3.5 3.4 3.2 3.1 2.9
210 x 85 7.1 6.8 6.5 6.3 6.2 5.9 5.5 5.1 4.7 4.4 4.2 4.0 3.8 3.7
252 x 85 8.0 7.7 7.4 7.2 7.0 6.7 6.5 6.1 5.7 5.4 5.1 4.8 4.6 4.4
294 x 85 8.9 8.5 8.3 8.0 7.8 7.5 7.2 7.0 6.6 6.3 5.9 5.7 5.4 5.2
336 x 85 9.7 9.3 9.1 8.8 8.6 8.2 7.9 7.7 7.5 7.2 6.8 6.5 6.2 5.9
378 x 85 10.5 10.1 9.8 9.6 9.3 8.9 8.6 8.4 8.1 7.9 7.7 7.3 7.0 6.7
420 x 85 11.2 10.8 10.5 10.3 10.0 9.6 9.3 9.0 8.8 8.5 8.3 8.1 7.8 7.5*
462 x 85 11.9 11.5 11.2 10.9 10.7 10.3 9.9 9.6 9.4 9.1 8.9 8.8* 8.5* 8.2*
504 x 85 12.6 12.2 11.9 11.6 11.3 10.9 10.5 10.2 10.0 9.7 9.5 9.3* 9.1* 8.9*
546 x 85 13.2 12.8 12.5 12.2 12.0 11.5 11.1 10.8 10.5 10.3 10.1* 9.9* 9.7* 9.4*
588 x 85 13.8 13.5 13.1 12.8 12.6 12.1 11.7 11.4 11.1 10.8 10.6* 10.4* 10.2* 9.9*
B i L th
Roof load of Sheet (20kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
25
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 5.0 4.7 4.5 4.3 4.2 3.9 3.7 3.4 3.2 3.0 2.9 2.7 2.6 2.5
168 x 110 6.4 6.1 5.9 5.6 5.4 5.1 4.8 4.6 4.3 4.0 3.8 3.6 3.5 3.4
210 x 110 7.4 7.1 6.9 6.7 6.5 6.2 6.0 5.7 5.4 5.1 4.8 4.6 4.4 4.2
252 x 110 8.3 8.0 7.8 7.6 7.4 7.1 6.8 6.6 6.4 6.1 5.8 5.5 5.3 5.1
294 x 110 9.2 8.9 8.7 8.4 8.2 7.9 7.6 7.4 7.2 7.0 6.8 6.4 6.2 5.9
336 x 110 10.1 9.7 9.5 9.2 9.0 8.7 8.4 8.1 7.9 7.7 7.5 7.4 7.1 6.8
378 x 110 10.8 10.5 10.2 10.0 9.8 9.4 9.1 8.8 8.6 8.4 8.2 8.0 7.9 7.6
420 x 110 11.6 11.2 11.0 10.7 10.5 10.1 9.8 9.5 9.2 9.0 8.8 8.6 8.5 8.3
462 x 110 12.3 11.9 11.7 11.4 11.2 10.8 10.4 10.1 9.9 9.6 9.4 9.3 9.1 8.9
504 x 110 13.0 12.6 12.3 12.1 11.8 11.4 11.1 10.7 10.5 10.2 10.0 9.8 9.7 9.5
546 x 110 13.6 13.3 13.0 12.7 12.5 12.0 11.7 11.4 11.1 10.8 10.6 10.4 10.2 10.1*
588 x 110 14.2 13.9 13.6 13.3 13.1 12.6 12.3 11.9 11.7 11.4 11.2 11.0 10.8* 10.6*
630 x 110 14.8 14.5 14.2 13.9 13.7 13.2 12.8 12.5 12.2 12.0 11.7 11.5* 11.3* 11.1*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 5.2 5.0 4.7 4.5 4.4 4.1 3.9 3.7 3.5 3.3 3.1 3.0 2.8 2.7
168 x 130 6.5 6.3 6.1 5.9 5.7 5.4 5.1 4.8 4.7 4.4 4.2 4.0 3.8 3.6
210 x 130 7.6 7.3 7.1 6.9 6.7 6.4 6.2 6.0 5.8 5.5 5.2 5.0 4.8 4.6
252 x 130 8.6 8.3 8.0 7.8 7.6 7.3 7.1 6.8 6.6 6.5 6.3 6.0 5.7 5.5
294 x 130 9.4 9.2 8.9 8.7 8.5 8.1 7.9 7.6 7.4 7.2 7.1 6.9 6.7 6.4
336 x 130 10.3 10.0 9.7 9.5 9.3 8.9 8.6 8.4 8.2 8.0 7.8 7.6 7.5 7.4
378 x 130 11.1 10.8 10.5 10.2 10.0 9.7 9.4 9.1 8.9 8.7 8.5 8.3 8.2 8.0
420 x 130 11.8 11.5 11.2 11.0 10.8 10.4 10.1 9.8 9.5 9.3 9.1 8.9 8.8 8.6
462 x 130 12.5 12.2 11.9 11.7 11.5 11.1 10.7 10.4 10.2 10.0 9.8 9.6 9.4 9.3
504 x 130 13.2 12.9 12.6 12.3 12.1 11.7 11.4 11.1 10.8 10.6 10.4 10.2 10.0 9.8
546 x 130 13.8 13.5 13.2 13.0 12.8 12.3 12.0 11.7 11.4 11.2 11.0 10.8 10.6 10.4
588 x 130 14.5 14.2 13.9 13.6 13.4 13.0 12.6 12.3 12.0 11.8 11.5 11.3 11.1 11.0
630 x 130 15.1 14.8 14.5 14.2 14.0 13.6 13.2 12.9 12.6 12.3 12.1 11.9 11.7 11.5*
Roof load of Sheet (20kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
26
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 2.7 2.6 2.4 2.3 2.2 2.1 2.0 1.8 1.8 1.7 1.6 1.5 1.5 1.4
168 x 38 3.6 3.4 3.2 3.0 2.9 2.7 2.6 2.4 2.3 2.2 2.1 2.0 1.9 1.8
210 x 38 4.5 4.2 3.9 3.8 3.6 3.3 3.2 3.0 2.8 2.6 2.5 2.4 2.3 2.2
252 x 38 5.4 5.0 4.7 4.5 4.4 4.0 3.7 3.4 3.2 3.0 2.9 2.7 2.6 2.5
294 x 38 6.1 5.8 5.5 5.3 5.0 4.5 4.1 3.8 3.6 3.4 3.2 3.0 2.9 2.8
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 2.9 2.6 2.5 2.4 2.3 2.1 2.0 1.9 1.8 1.8 1.7 1.7 1.6 1.5
168 x 42 3.8 3.5 3.3 3.2 3.0 2.8 2.6 2.5 2.4 2.3 2.3 2.1 2.1 2.0
210 x 42 4.7 4.4 4.1 3.9 3.8 3.5 3.3 3.2 3.0 2.9 2.7 2.6 2.5 2.4
252 x 42 5.6 5.1 4.9 4.7 4.5 4.2 3.9 3.8 3.5 3.3 3.2 3.0 2.9 2.8
294 x 42 6.3 6.0 5.7 5.4 5.2 4.8 4.5 4.2 4.0 3.7 3.6 3.4 3.2 3.1
336 x 42 6.9 6.6 6.3 6.1 5.9 5.5 5.1 4.7 4.4 4.1 3.9 3.7 3.6 3.4
378 x 42 7.5 7.2 6.9 6.7 6.5 6.0 5.5 5.1 4.8 4.5 4.3 4.1 3.9 3.7*
420 x 42 8.1 7.7 7.4 7.2 7.0 6.4 5.9 5.4 5.1 4.8 4.6 4.3 4.2* 4.0*
Roof load of Sheet & Ceiling (40kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
27
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 3.6 3.3 3.2 3.0 2.9 2.7 2.6 2.4 2.3 2.2 2.1 2.1 2.0 1.9
168 x 65 4.7 4.4 4.1 3.9 3.8 3.5 3.3 3.2 3.0 2.9 2.9 2.7 2.7 2.6
210 x 65 5.8 5.4 5.1 4.9 4.7 4.4 4.2 3.9 3.8 3.6 3.5 3.5 3.3 3.2
252 x 65 6.6 6.3 6.1 5.9 5.6 5.3 5.0 4.7 4.5 4.4 4.2 4.1 4.0 3.9
294 x 65 7.4 7.1 6.8 6.6 6.4 6.1 5.7 5.5 5.3 5.1 4.9 4.8 4.7 4.5
336 x 65 8.2 7.8 7.5 7.2 7.0 6.7 6.4 6.2 6.0 5.8 5.6 5.4 5.3 5.1
378 x 65 8.9 8.5 8.2 7.9 7.7 7.3 7.0 6.7 6.5 6.4 6.2 6.1 5.9 5.6
420 x 65 9.5 9.1 8.8 8.5 8.3 7.9 7.6 7.3 7.1 6.9 6.7 6.6 6.4* 6.2*
462 x 65 10.2 9.8 9.4 9.1 8.9 8.4 8.1 7.8 7.6 7.4 7.2 7.0* 6.9* 6.7*
504 x 65 10.8 10.4 10.0 9.7 9.4 9.0 8.6 8.3 8.1 7.9 7.7* 7.5* 7.3* 7.2*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 3.9 3.6 3.4 3.3 3.2 2.9 2.7 2.6 2.5 2.4 2.3 2.3 2.2 2.1
168 x 85 5.1 4.7 4.5 4.3 4.1 3.9 3.6 3.5 3.3 3.2 3.1 3.0 2.9 2.9
210 x 85 6.2 5.9 5.6 5.3 5.1 4.8 4.5 4.3 4.1 4.0 3.9 3.8 3.6 3.5
252 x 85 7.0 6.7 6.5 6.2 6.1 5.7 5.4 5.1 5.0 4.8 4.6 4.5 4.4 4.2
294 x 85 7.8 7.5 7.2 7.0 6.8 6.4 6.2 6.0 5.7 5.6 5.3 5.2 5.0 5.0
336 x 85 8.6 8.2 7.9 7.7 7.5 7.1 6.8 6.6 6.4 6.2 6.1 5.9 5.7 5.6
378 x 85 9.3 8.9 8.6 8.4 8.1 7.7 7.4 7.2 7.0 6.8 6.6 6.5 6.3 6.2
420 x 85 10.0 9.6 9.3 9.0 8.8 8.3 8.0 7.7 7.5 7.3 7.1 7.0 6.8 6.7
462 x 85 10.7 10.3 9.9 9.6 9.4 8.9 8.6 8.3 8.1 7.8 7.7 7.5 7.3 7.2
504 x 85 11.3 10.9 10.5 10.2 10.0 9.5 9.1 8.8 8.6 8.4 8.2 8.0 7.8 7.7*
546 x 85 12.0 11.5 11.1 10.8 10.5 10.1 9.7 9.4 9.1 8.9 8.7 8.5 8.3* 8.1*
588 x 85 12.6 12.1 11.7 11.4 11.1 10.6 10.2 9.9 9.6 9.4 9.1 8.9* 8.8* 8.6*
Roof load of Sheet & Ceiling (40kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
28
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 4.2 3.9 3.7 3.5 3.4 3.2 3.0 2.9 2.7 2.6 2.6 2.4 2.4 2.3
168 x 110 5.4 5.1 4.8 4.7 4.5 4.2 3.9 3.8 3.6 3.5 3.3 3.3 3.2 3.1
210 x 110 6.5 6.2 6.0 5.7 5.6 5.1 4.9 4.7 4.5 4.3 4.2 4.1 3.9 3.8
252 x 110 7.4 7.1 6.8 6.6 6.4 6.1 5.9 5.6 5.3 5.1 5.0 4.8 4.7 4.6
294 x 110 8.2 7.9 7.6 7.4 7.2 6.8 6.6 6.3 6.1 6.0 5.8 5.6 5.4 5.3
336 x 110 9.0 8.7 8.4 8.1 7.9 7.5 7.2 7.0 6.8 6.6 6.4 6.3 6.2 6.0
378 x 110 9.8 9.4 9.1 8.8 8.6 8.2 7.9 7.6 7.4 7.2 7.0 6.9 6.7 6.6
420 x 110 10.5 10.1 9.8 9.5 9.2 8.8 8.5 8.2 8.0 7.8 7.6 7.4 7.3 7.1
462 x 110 11.2 10.8 10.4 10.1 9.9 9.4 9.1 8.8 8.5 8.3 8.1 8.0 7.8 7.7
504 x 110 11.8 11.4 11.1 10.7 10.5 10.0 9.7 9.4 9.1 8.9 8.7 8.5 8.3 8.2
546 x 110 12.5 12.0 11.7 11.4 11.1 10.6 10.2 9.9 9.6 9.4 9.2 9.0 8.8 8.6
588 x 110 13.1 12.6 12.3 11.9 11.7 11.2 10.8 10.4 10.2 9.9 9.7 9.5 9.3 9.1
630 x 110 13.7 13.2 12.8 12.5 12.2 11.7 11.3 11.0 10.7 10.4 10.2 10.0 9.8 9.6*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 4.4 4.1 3.9 3.7 3.6 3.3 3.2 3.0 2.9 2.7 2.7 2.6 2.6 2.4
168 x 130 5.7 5.4 5.1 4.8 4.7 4.4 4.1 3.9 3.8 3.6 3.5 3.5 3.3 3.3
210 x 130 6.7 6.4 6.2 6.0 5.8 5.4 5.1 4.9 4.7 4.5 4.4 4.2 4.2 4.1
252 x 130 7.6 7.3 7.1 6.8 6.6 6.3 6.1 5.9 5.6 5.4 5.3 5.1 5.0 4.8
294 x 130 8.5 8.1 7.9 7.6 7.4 7.1 6.8 6.6 6.4 6.2 6.1 5.9 5.7 5.6
336 x 130 9.3 8.9 8.6 8.4 8.2 7.8 7.5 7.2 7.0 6.8 6.7 6.5 6.4 6.3
378 x 130 10.0 9.7 9.4 9.1 8.9 8.5 8.2 7.9 7.7 7.5 7.3 7.1 7.0 6.9
420 x 130 10.8 10.4 10.1 9.8 9.5 9.1 8.8 8.5 8.3 8.1 7.9 7.7 7.6 7.4
462 x 130 11.5 11.1 10.7 10.4 10.2 9.8 9.4 9.1 8.9 8.6 8.4 8.3 8.1 8.0
504 x 130 12.1 11.7 11.4 11.1 10.8 10.4 10.0 9.7 9.4 9.2 9.0 8.8 8.6 8.5
546 x 130 12.8 12.3 12.0 11.7 11.4 11.0 10.6 10.3 10.0 9.7 9.5 9.3 9.1 9.0
588 x 130 13.4 13.0 12.6 12.3 12.0 11.5 11.1 10.8 10.5 10.3 10.0 9.8 9.6 9.5
630 x 130 14.0 13.6 13.2 12.9 12.6 12.1 11.7 11.3 11.0 10.8 10.5 10.3 10.1 10.0
Roof load of Sheet & Ceiling (40kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
29
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 2.3 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.5 1.4 1.4 1.3 1.2 1.2
168 x 38 3.0 2.9 2.7 2.6 2.4 2.3 2.1 2.0 1.9 1.8 1.7 1.6 1.6 1.5
210 x 38 3.8 3.5 3.3 3.2 3.0 2.9 2.7 2.5 2.3 2.2 2.0 2.0 1.9 1.8
252 x 38 4.5 4.2 3.9 3.8 3.6 3.3 3.0 2.8 2.6 2.5 2.3 2.2 2.1 2.0
294 x 38 5.3 4.9 4.7 4.3 4.1 3.6 3.3 3.1 2.9 2.7 2.6 2.5 2.4 2.3
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 2.4 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.5 1.4 1.4 1.3 1.3
168 x 42 3.2 2.9 2.7 2.6 2.5 2.3 2.2 2.1 2.0 2.0 1.8 1.8 1.7 1.7
210 x 42 3.9 3.6 3.5 3.3 3.2 2.9 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0
252 x 42 4.7 4.4 4.1 3.9 3.8 3.5 3.3 3.1 2.9 2.8 2.6 2.5 2.4 2.3
294 x 42 5.4 5.0 4.8 4.5 4.4 4.1 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6
336 x 42 6.1 5.7 5.4 5.1 5.0 4.5 4.1 3.8 3.6 3.4 3.2 3.0 2.9 2.8*
378 x 42 6.7 6.3 6.1 5.7 5.4 4.8 4.4 4.1 3.8 3.6 3.4 3.3* 3.1* 3.0*
420 x 42 7.2 6.8 6.5 6.1 5.7 5.1 4.7 4.3 4.1 3.8 3.6* 3.5* 3.3* 3.2*
Roof load of Tiles (70kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
30
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 3.0 2.8 2.6 2.5 2.4 2.3 2.1 2.0 2.0 1.8 1.8 1.7 1.7 1.7
168 x 65 3.9 3.7 3.5 3.3 3.2 3.0 2.8 2.7 2.6 2.4 2.4 2.3 2.3 2.2
210 x 65 4.9 4.6 4.4 4.1 3.9 3.7 3.5 3.3 3.2 3.0 3.0 2.9 2.8 2.7
252 x 65 5.9 5.4 5.1 5.0 4.7 4.4 4.2 3.9 3.8 3.6 3.5 3.5 3.3 3.2
294 x 65 6.6 6.3 6.0 5.7 5.5 5.1 4.8 4.6 4.4 4.2 4.1 4.0 3.9 3.8
336 x 65 7.2 6.9 6.6 6.4 6.2 5.9 5.5 5.3 5.0 4.8 4.7 4.5 4.4 4.3*
378 x 65 7.9 7.5 7.2 7.0 6.7 6.4 6.1 5.9 5.6 5.4 5.3 5.1* 4.9* 4.7*
420 x 65 8.5 8.1 7.8 7.5 7.3 6.9 6.6 6.4 6.2 6.0 5.9* 5.6* 5.4* 5.2*
462 x 65 9.1 8.7 8.3 8.1 7.8 7.4 7.1 6.9 6.6 6.5* 6.3* 6.1* 5.8* 5.6*
504 x 65 9.7 9.2 8.9 8.6 8.3 7.9 7.6 7.3 7.1* 6.9* 6.7* 6.5* 6.2* 6.0*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 3.3 3.0 2.9 2.7 2.6 2.4 2.3 2.2 2.1 2.0 2.0 1.9 1.8 1.8
168 x 85 4.3 4.0 3.8 3.6 3.5 3.2 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.4
210 x 85 5.3 5.0 4.7 4.5 4.3 4.0 3.8 3.6 3.5 3.3 3.2 3.2 3.0 3.0
252 x 85 6.2 5.9 5.6 5.4 5.1 4.8 4.5 4.3 4.1 4.0 3.9 3.8 3.6 3.5
294 x 85 7.0 6.6 6.4 6.2 6.0 5.6 5.3 5.0 4.8 4.7 4.5 4.4 4.2 4.1
336 x 85 7.7 7.3 7.0 6.8 6.6 6.2 6.0 5.7 5.4 5.3 5.1 5.0 4.8 4.7
378 x 85 8.4 8.0 7.7 7.4 7.2 6.8 6.5 6.3 6.1 5.9 5.7 5.6 5.4 5.3
420 x 85 9.0 8.6 8.3 8.0 7.7 7.4 7.1 6.8 6.6 6.4 6.3 6.1 6.0* 5.9*
462 x 85 9.6 9.2 8.8 8.6 8.3 7.9 7.6 7.3 7.1 6.9 6.7 6.6* 6.4* 6.3*
504 x 85 10.2 9.8 9.4 9.1 8.8 8.4 8.1 7.8 7.5 7.3 7.2* 7.0* 6.9* 6.7*
546 x 85 10.8 10.4 10.0 9.6 9.4 8.9 8.6 8.3 8.0 7.8* 7.6* 7.4* 7.3* 7.1*
588 x 85 11.4 10.9 10.5 10.2 9.9 9.4 9.0 8.7 8.5 8.2* 8.0* 7.8* 7.7* 7.5*
Roof load of Tiles (70kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
31
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 3.5 3.3 3.1 3.0 2.9 2.6 2.5 2.4 2.3 2.2 2.1 2.1 2.0 2.0
168 x 110 4.7 4.4 4.1 3.9 3.8 3.5 3.3 3.2 3.0 2.9 2.8 2.7 2.7 2.6
210 x 110 5.7 5.4 5.1 4.8 4.7 4.4 4.1 3.9 3.8 3.6 3.5 3.4 3.3 3.2
252 x 110 6.6 6.3 6.0 5.8 5.6 5.2 4.9 4.7 4.5 4.4 4.2 4.1 3.9 3.8
294 x 110 7.4 7.0 6.8 6.5 6.3 6.0 5.7 5.4 5.2 5.0 4.8 4.7 4.6 4.5
336 x 110 8.1 7.7 7.4 7.2 7.0 6.6 6.4 6.1 5.9 5.7 5.6 5.4 5.3 5.1
378 x 110 8.8 8.4 8.1 7.8 7.6 7.2 6.9 6.7 6.5 6.3 6.2 6.0 5.9 5.7
420 x 110 9.5 9.1 8.7 8.4 8.2 7.8 7.5 7.2 7.0 6.8 6.7 6.5 6.4 6.2
462 x 110 10.1 9.7 9.3 9.0 8.8 8.4 8.0 7.8 7.5 7.3 7.1 7.0 6.8 6.7
504 x 110 10.7 10.3 9.9 9.6 9.4 8.9 8.6 8.3 8.0 7.8 7.6 7.4 7.3 7.2*
546 x 110 11.4 10.9 10.5 10.2 9.9 9.4 9.1 8.8 8.5 8.3 8.1 7.9 7.7* 7.6*
588 x 110 11.9 11.5 11.1 10.7 10.4 10.0 9.6 9.3 9.0 8.7 8.5 8.3* 8.2* 8.0*
630 x 110 12.5 12.0 11.6 11.3 11.0 10.5 10.1 9.7 9.4 9.2 9.0* 8.8* 8.6* 8.4*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 3.7 3.5 3.3 3.2 3.0 2.8 2.6 2.5 2.4 2.3 2.3 2.1 2.1 2.1
168 x 130 4.8 4.5 4.4 4.1 3.9 3.7 3.5 3.3 3.2 3.0 3.0 2.9 2.8 2.7
210 x 130 6.0 5.6 5.4 5.1 4.9 4.6 4.4 4.1 3.9 3.8 3.7 3.6 3.5 3.4
252 x 130 6.8 6.5 6.3 6.1 5.9 5.4 5.1 5.0 4.7 4.5 4.4 4.2 4.2 4.1
294 x 130 7.6 7.3 7.0 6.8 6.6 6.3 6.0 5.7 5.5 5.3 5.1 5.0 4.8 4.7
336 x 130 8.4 8.0 7.7 7.5 7.2 6.9 6.6 6.4 6.2 6.0 5.9 5.7 5.5 5.4
378 x 130 9.1 8.7 8.4 8.1 7.9 7.5 7.2 7.0 6.7 6.6 6.4 6.3 6.1 6.0
420 x 130 9.8 9.4 9.0 8.8 8.5 8.1 7.8 7.5 7.3 7.1 6.9 6.8 6.6 6.5
462 x 130 10.4 10.0 9.7 9.4 9.1 8.7 8.3 8.1 7.8 7.6 7.4 7.3 7.1 7.0
504 x 130 11.1 10.6 10.3 10.0 9.7 9.2 8.9 8.6 8.3 8.1 7.9 7.7 7.6 7.4
546 x 130 11.7 11.2 10.9 10.5 10.3 9.8 9.4 9.1 8.8 8.6 8.4 8.2 8.0 7.9
588 x 130 12.3 11.8 11.4 11.1 10.8 10.3 9.9 9.6 9.3 9.1 8.9 8.7 8.5 8.3*
630 x 130 12.9 12.4 12.0 11.6 11.3 10.8 10.4 10.1 9.8 9.5 9.3 9.1 8.9* 8.8*
Roof load of Tiles (70kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
32
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 2.1 2.0 1.8 1.8 1.7 1.6 1.5 1.4 1.3 1.3 1.2 1.1 1.1 1.0
168 x 38 2.8 2.6 2.4 2.3 2.3 2.1 2.0 1.8 1.7 1.6 1.5 1.4 1.4 1.3
210 x 38 3.5 3.3 3.0 2.9 2.8 2.6 2.3 2.2 2.0 1.9 1.8 1.7 1.6 1.6
252 x 38 4.2 3.9 3.6 3.5 3.3 2.9 2.7 2.5 2.3 2.2 2.1 2.0 1.9 1.8
294 x 38 4.8 4.5 4.1 3.8 3.6 3.2 2.9 2.7 2.5 2.4 2.3 2.2 2.1 2.0*
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 2.2 2.0 2.0 1.8 1.8 1.7 1.5 1.5 1.4 1.4 1.3 1.2 1.2 1.1
168 x 42 2.9 2.7 2.6 2.4 2.3 2.1 2.0 2.0 1.8 1.8 1.7 1.6 1.5 1.5
210 x 42 3.6 3.3 3.2 3.0 2.9 2.7 2.6 2.4 2.2 2.1 2.0 1.9 1.8 1.7
252 x 42 4.3 4.0 3.8 3.6 3.5 3.2 3.0 2.8 2.6 2.4 2.3 2.2 2.1 2.0
294 x 42 5.0 4.7 4.4 4.2 4.1 3.6 3.3 3.1 2.9 2.7 2.6 2.5 2.3 2.3*
336 x 42 5.7 5.3 5.0 4.7 4.4 4.0 3.6 3.4 3.1 3.0 2.8* 2.7* 2.6* 2.5*
378 x 42 6.3 6.0 5.5 5.1 4.8 4.3 3.9 3.6 3.4 3.2* 3.0* 2.9* 2.8* 2.7*
420 x 42 6.8 6.3 5.8 5.4 5.0 4.5 4.1 3.8 3.6* 3.4* 3.2* 3.1* 2.9* 2.8*
Roof load of Tiles & Ceiling (90kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 supports.
* For single spans: denotes member must have a min 65mm bearing length at the 2 supports.
33
ROOF BEAMS
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 2.7 2.6 2.4 2.3 2.2 2.1 2.0 1.8 1.8 1.7 1.7 1.6 1.5 1.5
168 x 65 3.6 3.4 3.2 3.0 2.9 2.7 2.6 2.4 2.4 2.3 2.2 2.1 2.1 2.0
210 x 65 4.5 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.9 2.8 2.7 2.6 2.6 2.5
252 x 65 5.4 5.1 4.8 4.5 4.4 4.1 3.8 3.6 3.5 3.3 3.3 3.2 3.0 3.0
294 x 65 6.2 5.9 5.6 5.3 5.1 4.7 4.5 4.2 4.1 3.9 3.8 3.6 3.5 3.4*
336 x 65 6.8 6.5 6.2 6.0 5.8 5.4 5.1 4.8 4.7 4.5 4.3* 4.1* 3.9* 3.8*
378 x 65 7.5 7.1 6.8 6.6 6.4 6.0 5.7 5.4 5.2 5.0* 4.8* 4.6* 4.4* 4.2*
420 x 65 8.1 7.7 7.4 7.1 6.9 6.5 6.2 6.0 5.7* 5.5* 5.2* 5.0* 4.8* 4.6*
462 x 65 8.6 8.2 7.9 7.6 7.4 7.0 6.7 6.5* 6.2* 5.9* 5.6* 5.4* 5.1* 4.9#
504 x 65 9.2 8.8 8.4 8.1 7.9 7.5 7.1* 6.9* 6.7* 6.3* 6.0* 5.7# 5.5# 5.3#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 3.0 2.8 2.6 2.6 2.4 2.3 2.1 2.0 2.0 1.8 1.8 1.7 1.7 1.7
168 x 85 3.9 3.7 3.5 3.3 3.2 3.0 2.8 2.7 2.6 2.4 2.4 2.3 2.3 2.2
210 x 85 5.0 4.6 4.4 4.2 4.0 3.7 3.5 3.3 3.2 3.0 3.0 2.9 2.8 2.7
252 x 85 5.9 5.5 5.2 5.0 4.8 4.4 4.2 4.0 3.8 3.6 3.6 3.5 3.3 3.3
294 x 85 6.6 6.3 6.0 5.7 5.6 5.1 4.8 4.7 4.4 4.2 4.1 4.0 3.9 3.8
336 x 85 7.3 6.9 6.6 6.4 6.2 5.9 5.6 5.3 5.1 4.8 4.7 4.5 4.4 4.4*
378 x 85 7.9 7.5 7.2 7.0 6.8 6.4 6.2 5.9 5.7 5.4 5.3 5.1* 5.0* 4.8*
420 x 85 8.5 8.1 7.8 7.5 7.3 6.9 6.7 6.4 6.2 6.0 5.9* 5.7* 5.6* 5.4*
462 x 85 9.1 8.7 8.4 8.1 7.8 7.5 7.1 6.9 6.7 6.5* 6.3* 6.2* 6.0* 5.9*
504 x 85 9.7 9.3 8.9 8.6 8.4 7.9 7.6 7.3 7.1* 6.9* 6.7* 6.6* 6.5* 6.3#
546 x 85 10.3 9.8 9.4 9.1 8.9 8.4 8.1 7.8* 7.5* 7.3* 7.2* 7.0* 6.8# 6.7#
588 x 85 10.8 10.4 10.0 9.6 9.4 8.9 8.5 8.2* 8.0* 7.8* 7.6* 7.4# 7.2# 7.1#
Roof load of Tiles & Ceiling (90kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 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.
34
ROOF BEAMSRoof load of Tiles & Ceiling (90kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For single spans: member must have a min 45mm bearing length at the 2 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.
Single Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 3.3 3.0 2.9 2.7 2.6 2.4 2.3 2.2 2.1 2.0 2.0 1.9 1.8 1.8
168 x 110 4.3 4.1 3.8 3.6 3.5 3.2 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.4
210 x 110 5.3 5.0 4.7 4.5 4.3 4.1 3.8 3.6 3.5 3.3 3.2 3.2 3.0 3.0
252 x 110 6.2 5.9 5.6 5.4 5.1 4.8 4.5 4.4 4.1 4.0 3.9 3.8 3.6 3.5
294 x 110 7.0 6.7 6.4 6.2 6.0 5.6 5.3 5.0 4.8 4.7 4.5 4.4 4.2 4.1
336 x 110 7.7 7.3 7.0 6.8 6.6 6.3 6.0 5.7 5.5 5.3 5.1 5.0 4.8 4.7
378 x 110 8.4 8.0 7.7 7.4 7.2 6.8 6.5 6.3 6.1 5.9 5.7 5.6 5.4 5.3
420 x 110 9.0 8.6 8.3 8.0 7.8 7.4 7.1 6.8 6.6 6.4 6.3 6.1 6.0* 5.9*
462 x 110 9.6 9.2 8.9 8.6 8.3 7.9 7.6 7.3 7.1 6.9 6.7 6.6* 6.4* 6.3*
504 x 110 10.2 9.8 9.4 9.1 8.9 8.4 8.1 7.8 7.6 7.4 7.2* 7.0* 6.9* 6.7*
546 x 110 10.8 10.4 10.0 9.7 9.4 8.9 8.6 8.3 8.0 7.8* 7.6* 7.4* 7.3* 7.1*
588 x 110 11.4 10.9 10.5 10.2 9.9 9.4 9.0 8.7 8.5 8.2* 8.0* 7.9* 7.7* 7.6*
630 x 110 12.0 11.5 11.0 10.7 10.4 9.9 9.5 9.2 8.9* 8.7* 8.5* 8.3* 8.1* 7.9#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 3.5 3.2 3.0 2.9 2.7 2.6 2.4 2.3 2.2 2.1 2.1 2.0 2.0 1.9
168 x 130 4.5 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.9 2.9 2.7 2.7 2.6 2.5
210 x 130 5.6 5.3 5.0 4.7 4.5 4.2 4.0 3.8 3.6 3.5 3.4 3.3 3.2 3.2
252 x 130 6.5 6.2 5.9 5.6 5.4 5.1 4.8 4.5 4.4 4.2 4.1 3.9 3.8 3.8
294 x 130 7.2 6.9 6.6 6.4 6.2 5.9 5.6 5.3 5.1 4.9 4.7 4.6 4.5 4.4
336 x 130 8.0 7.6 7.3 7.1 6.8 6.5 6.2 6.0 5.8 5.6 5.4 5.3 5.1 5.0
378 x 130 8.7 8.3 8.0 7.7 7.5 7.1 6.8 6.6 6.4 6.2 6.0 5.9 5.7 5.6
420 x 130 9.3 8.9 8.6 8.3 8.1 7.7 7.4 7.1 6.9 6.7 6.5 6.4 6.2 6.1
462 x 130 10.0 9.5 9.2 8.9 8.6 8.2 7.9 7.6 7.4 7.2 7.0 6.8 6.7 6.6*
504 x 130 10.6 10.1 9.8 9.5 9.2 8.8 8.4 8.1 7.9 7.6 7.5 7.3 7.1* 7.0*
546 x 130 11.2 10.7 10.3 10.0 9.7 9.3 8.9 8.6 8.3 8.1 7.9 7.7* 7.6* 7.4*
588 x 130 11.8 11.3 10.9 10.5 10.3 9.8 9.4 9.1 8.8 8.6 8.4* 8.2* 8.0* 7.9*
630 x 130 12.3 11.8 11.4 11.1 10.8 10.3 9.9 9.5 9.3 9.0* 8.8* 8.6* 8.4* 8.3*
35
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 3.7 3.3 3.0 2.8 2.6 2.3 2.1 1.9 1.8 1.7 1.6 1.5 1.5 1.4
168 x 38 4.9 4.4 4.0 3.7 3.5 3.1 2.8 2.6 2.4 2.3 2.2 2.1 2.0 1.9
210 x 38 6.2 5.5 5.0 4.6 4.3 3.9 3.5 3.3 3.0 2.9 2.7 2.6* 2.5* 2.4*
252 x 38 7.1 6.3 5.8 5.3 5.0 4.5 4.1 3.8 3.5 3.3* 3.2* 3.0* 2.9* 2.8*
294 x 38 7.9 7.0 6.4 5.9 5.5 4.9 4.5 4.2* 3.9* 3.7* 3.5* 3.4* 3.2# 3.1#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 3.9 3.4 3.1 2.9 2.7 2.4 2.2 2.0 1.9 1.8 1.7 1.6 1.5 1.5
168 x 42 5.2 4.6 4.2 3.9 3.6 3.2 3.0 2.7 2.6 2.4 2.3 2.2 2.1 2.0
210 x 42 6.5 5.8 5.3 4.9 4.6 4.1 3.7 3.4 3.2 3.0 2.9 2.7 2.6* 2.5*
252 x 42 7.7 6.8 6.2 5.8 5.4 4.8 4.4 4.1 3.8 3.6* 3.4* 3.2* 3.1* 3.0*
294 x 42 8.6 7.6 7.0 6.4 6.0 5.4 4.9 4.6* 4.3* 4.0* 3.8* 3.6* 3.5* 3.4#
336 x 42 9.3 8.3 7.6 7.0 6.6 5.9 5.4* 5.0* 4.7* 4.4* 4.2* 4.0# 3.8# 3.7#
378 x 42 10.0 8.9 8.1 7.5 7.0 6.3 5.7* 5.3* 5.0* 4.7# 4.5# 4.3# 4.1# 3.9#
420 x 42 10.4 9.3 8.5 7.9 7.3 6.6* 6.0* 5.6* 5.2* 5.0# 4.7# 4.5# 4.3# 4.0#
Roof load of Light Sheet (10kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
36
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 4.8 4.3 3.9 3.6 3.4 3.0 2.8 2.5 2.4 2.2 2.1 2.0 1.9 1.9
168 x 65 6.5 5.8 5.3 4.9 4.5 4.1 3.7 3.4 3.2 3.0 2.8 2.7 2.6 2.5
210 x 65 8.2 7.3 6.6 6.1 5.7 5.1 4.6 4.3 4.0 3.8 3.6 3.4 3.3 3.1
252 x 65 9.8 8.8 8.0 7.4 6.9 6.1 5.6 5.2 4.8 4.5 4.3 4.1 3.9 3.8*
294 x 65 11.5 10.3 9.3 8.6 8.0 7.2 6.5 6.0 5.6 5.3 5.0* 4.8* 4.6* 4.4*
336 x 65 12.9 11.8 10.7 9.9 9.2 8.2 7.5 6.9 6.5* 6.1* 5.8* 5.5* 5.2* 5.0*
378 x 65 13.9 13.1 11.9 11.0 10.3 9.1 8.3* 7.7* 7.2* 6.8* 6.4* 6.1# 5.9# 5.6#
420 x 65 14.9 14.2 12.9 11.9 11.1 9.9 9.0* 8.3* 7.8* 7.3* 7.0# 6.6# 6.4# 6.1#
462 x 65 15.7 15.2 13.8 12.7 11.9 10.6* 9.6* 8.9* 8.3# 7.9# 7.5# 7.1# 6.7# 6.2#
504 x 65 16.6 16.1 14.6 13.5 12.6 11.2* 10.2* 9.4* 8.8# 8.3# 7.9# 7.4# 6.7# 6.2#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 5.6 5.0 4.5 4.2 3.9 3.5 3.2 2.9 2.7 2.6 2.4 2.3 2.2 2.1
168 x 85 7.5 6.6 6.1 5.6 5.2 4.7 4.2 3.9 3.7 3.4 3.3 3.1 3.0 2.9
210 x 85 9.4 8.4 7.6 7.0 6.5 5.8 5.3 4.9 4.6 4.3 4.1 3.9 3.7 3.6
252 x 85 11.2 10.1 9.2 8.5 7.9 7.0 6.4 5.9 5.5 5.2 4.9 4.7 4.5 4.3
294 x 85 12.3 11.8 10.7 9.9 9.2 8.2 7.5 6.9 6.5 6.1 5.8 5.5 5.3* 5.0*
336 x 85 13.4 13.0 12.3 11.3 10.6 9.4 8.6 7.9 7.4 7.0 6.6* 6.3* 6.0* 5.8*
378 x 85 14.3 14.0 13.7 12.8 11.9 10.6 9.7 8.9 8.3* 7.9* 7.4* 7.1* 6.8* 6.5*
420 x 85 15.3 14.9 14.6 14.3 13.3 11.8 10.8 9.9* 9.3* 8.7* 8.3* 7.9# 7.5# 7.2#
462 x 85 16.2 15.8 15.5 15.2 14.7 13.0 11.9* 11.0* 10.2* 9.6* 9.1# 8.7# 8.3# 8.0#
504 x 85 17.0 16.7 16.4 16.1 15.8 14.0* 12.8* 11.8* 11.0#10.4# 9.8# 9.4# 8.9# 8.2#
546 x 85 17.8 17.5 17.2 16.9 16.6 14.9* 13.5* 12.5* 11.7#11.0#10.4# 9.7# 8.9# 8.2#
588 x 85 18.6 18.3 18.0 17.7 17.4* 15.7* 14.3* 13.2#12.3#11.6#10.8# 9.8# 8.9# 8.2#
Roof load of Light Sheet (10kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
37
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 6.4 5.7 5.2 4.8 4.4 4.0 3.6 3.3 3.1 2.9 2.8 2.6 2.5 2.4
168 x 110 8.5 7.6 6.9 6.4 6.0 5.3 4.8 4.5 4.2 3.9 3.7 3.5 3.4 3.3
210 x 110 10.3 9.6 8.7 8.0 7.5 6.7 6.1 5.6 5.2 4.9 4.7 4.4 4.3 4.1
252 x 110 11.5 11.2 10.5 9.7 9.0 8.0 7.3 6.8 6.3 5.9 5.6 5.4 5.1 4.9
294 x 110 12.6 12.3 12.1 11.3 10.6 9.4 8.6 7.9 7.4 6.9 6.6 6.3 6.0 5.8
336 x 110 13.7 13.4 13.1 12.9 12.1 10.8 9.8 9.0 8.4 8.0 7.5 7.2 6.9* 6.6*
378 x 110 14.7 14.4 14.1 13.9 13.6 12.2 11.1 10.2 9.5 9.0 8.5* 8.1* 7.7* 7.4*
420 x 110 15.6 15.3 15.1 14.8 14.6 13.5 12.3 11.4 10.6* 10.0* 9.4* 9.0* 8.6* 8.3*
462 x 110 16.5 16.2 15.9 15.7 15.5 14.9 13.6 12.5* 11.7* 11.0* 10.4* 9.9* 9.5# 9.1#
504 x 110 17.4 17.1 16.8 16.5 16.3 15.9 14.8* 13.7* 12.8* 12.0* 11.4# 10.8# 10.4# 9.9#
546 x 110 18.2 17.9 17.6 17.4 17.1 16.7 16.1* 14.9* 13.9* 13.0#12.3# 11.7# 11.2# 10.7#
588 x 110 19.0 18.7 18.4 18.1 17.9 17.5 17.1* 16.0* 15.0#14.1#13.3# 12.7# 11.6# 10.7#
630 x 110 19.7 19.4 19.2 18.9 18.7 18.2* 17.9* 17.1#15.9#15.0#14.1# 12.8# 11.7# 10.7#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 6.9 6.2 5.6 5.2 4.8 4.3 3.9 3.6 3.4 3.2 3.0 2.9 2.8 2.6
168 x 130 9.1 8.3 7.5 7.0 6.5 5.8 5.3 4.9 4.5 4.3 4.1 3.9 3.7 3.5
210 x 130 10.5 10.2 9.5 8.7 8.2 7.3 6.6 6.1 5.7 5.4 5.1 4.8 4.6 4.4
252 x 130 11.7 11.4 11.2 10.6 9.8 8.8 8.0 7.4 6.9 6.5 6.1 5.8 5.6 5.4
294 x 130 12.9 12.6 12.3 12.1 11.5 10.3 9.3 8.6 8.0 7.6 7.2 6.8 6.5 6.3
336 x 130 13.9 13.6 13.4 13.1 12.9 11.8 10.7 9.9 9.2 8.7 8.2 7.8 7.5 7.2
378 x 130 14.9 14.6 14.4 14.1 13.9 13.3 12.1 11.1 10.4 9.8 9.3 8.8 8.4* 8.1*
420 x 130 15.8 15.6 15.3 15.1 14.9 14.5 13.4 12.4 11.6 10.9 10.3* 9.8* 9.4* 9.0*
462 x 130 16.7 16.4 16.2 16.0 15.7 15.4 14.8 13.7 12.7* 12.0* 11.4* 10.8* 10.3* 9.9*
504 x 130 17.6 17.3 17.0 16.8 16.6 16.2 15.9 14.9* 13.9* 13.1* 12.4* 11.8* 11.3# 10.8#
546 x 130 18.4 18.1 17.9 17.6 17.4 17.0 16.7 16.2* 15.1* 14.2* 13.5* 12.8# 12.2# 11.7#
588 x 130 19.1 18.9 18.6 18.4 18.2 17.8 17.5* 17.1* 16.3* 15.3#14.5# 13.8# 13.2# 12.7#
630 x 130 19.9 19.6 19.4 19.2 19.0 18.6 18.2* 17.9* 17.5#16.5#15.6# 14.8# 13.9# 12.8#
Roof load of Light Sheet (10kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
38
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 3.8 3.4 3.1 2.8 2.7 2.4 2.2 2.0 1.9 1.7 1.7 1.6 1.5 1.4
168 x 38 5.1 4.5 4.1 3.8 3.6 3.2 2.9 2.7 2.5 2.3 2.2 2.1 2.0 1.9
210 x 38 6.2 5.5 5.1 4.7 4.4 3.9 3.6 3.3 3.1 2.9 2.8 2.7 2.5 2.4*
252 x 38 7.1 6.4 5.8 5.4 5.1 4.5 4.1 3.8 3.6 3.4* 3.2* 3.1* 2.9* 2.8*
294 x 38 7.9 7.1 6.5 6.0 5.7 5.1 4.6 4.3 4.0* 3.8* 3.6* 3.4* 3.3* 3.2#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 4.0 3.6 3.2 3.0 2.8 2.5 2.3 2.1 2.0 1.8 1.7 1.7 1.6 1.5
168 x 42 5.3 4.8 4.3 4.0 3.7 3.3 3.0 2.8 2.6 2.5 2.3 2.2 2.1 2.0
210 x 42 6.7 6.0 5.4 5.0 4.7 4.2 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6*
252 x 42 7.8 7.0 6.4 5.9 5.5 5.0 4.5 4.2 3.9 3.7 3.5* 3.3* 3.2* 3.1*
294 x 42 8.7 7.9 7.2 6.6 6.2 5.5 5.1 4.7 4.4* 4.1* 3.9* 3.7* 3.6* 3.4*
336 x 42 9.6 8.6 7.8 7.2 6.8 6.0 5.5 5.1* 4.8* 4.5* 4.3* 4.1* 3.9# 3.8#
378 x 42 10.3 9.1 8.3 7.7 7.2 6.5 5.9* 5.5* 5.1* 4.8* 4.6# 4.4# 4.2# 4.1#
420 x 42 10.7 9.6 8.7 8.1 7.6 6.8 6.2* 5.7* 5.4* 5.1# 4.8# 4.6# 4.4# 4.3#
Roof load of Sheet (20 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
39
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 5.0 4.4 4.0 3.7 3.5 3.1 2.8 2.6 2.4 2.3 2.2 2.1 2.0 1.9
168 x 65 6.7 6.0 5.4 5.0 4.7 4.2 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6
210 x 65 8.4 7.5 6.8 6.3 5.9 5.2 4.8 4.4 4.1 3.9 3.7 3.5 3.3 3.2
252 x 65 9.6 9.0 8.2 7.6 7.1 6.3 5.7 5.3 5.0 4.7 4.4 4.2 4.0 3.9
294 x 65 10.7 10.3 9.6 8.9 8.3 7.4 6.7 6.2 5.8 5.5 5.2 4.9* 4.7* 4.5*
336 x 65 11.7 11.2 10.9 10.2 9.5 8.4 7.7 7.1 6.6* 6.3* 5.9* 5.6* 5.4* 5.2*
378 x 65 12.6 12.2 11.8 11.3 10.6 9.4 8.6 7.9* 7.4* 7.0* 6.6* 6.3* 6.0# 5.8#
420 x 65 13.5 13.1 12.7 12.2 11.4 10.2 9.3* 8.6* 8.0* 7.6* 7.2# 6.8# 6.5# 6.3#
462 x 65 14.4 13.9 13.5 13.1 12.2 10.9* 9.9* 9.2* 8.6* 8.1# 7.7# 7.3# 7.0# 6.7#
504 x 65 15.2* 14.7* 14.3* 13.9* 12.9* 11.5* 10.5* 9.7* 9.1# 8.6# 8.1# 7.7# 7.3# 6.7#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 5.7* 5.1* 4.6* 4.3* 4.0* 3.6* 3.3* 3.0* 2.8* 2.6* 2.5* 2.4* 2.3* 2.2*
168 x 85 7.6* 6.8* 6.2* 5.8* 5.4* 4.8* 4.4* 4.0* 3.8* 3.5* 3.4* 3.2* 3.1* 2.9*
210 x 85 8.9* 8.5* 7.8* 7.2* 6.7* 6.0* 5.5* 5.1* 4.7* 4.4* 4.2* 4.0* 3.8* 3.7*
252 x 85 10.1* 9.7* 9.4* 8.7* 8.1* 7.2* 6.6* 6.1* 5.7* 5.4* 5.1* 4.8* 4.6* 4.4*
294 x 85 11.2* 10.8* 10.4* 10.1* 9.5* 8.5* 7.7* 7.1* 6.6* 6.3* 5.9* 5.7* 5.4* 5.2
336 x 85 12.2* 11.8* 11.4* 11.1* 10.8* 9.7* 8.8* 8.2* 7.6* 7.2* 6.8* 6.5* 6.2* 5.9*
378 x 85 13.2* 12.7* 12.3* 12.0* 11.7* 10.9* 10.0* 9.2* 8.6* 8.1* 7.7* 7.3* 7.0* 6.7*
420 x 85 14.1* 13.6* 13.3* 12.9* 12.6* 12.1* 11.1* 10.2* 9.6* 9.0* 8.5* 8.1* 7.8# 7.5#
462 x 85 15.0* 14.5* 14.1* 13.8* 13.5* 12.9* 12.2* 11.3* 10.5* 9.9* 9.4# 8.9# 8.5# 8.2#
504 x 85 15.8* 15.3* 14.9* 14.6* 14.3* 13.7* 13.1* 12.1* 11.3* 10.7#10.1# 9.6# 9.2# 8.8#
546 x 85 16.6* 16.2* 15.7* 15.4* 15.1* 14.5* 13.9* 12.9* 12.0#11.3#10.7# 10.2# 9.6# 8.8#
588 x 85 17.4* 16.9* 16.5* 16.1* 15.8* 15.2* 14.7* 13.6* 12.7#11.9#11.3# 10.5# 9.6# 8.9#
Roof load of Sheet (20 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
40
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 6.6* 5.8* 5.3* 4.9* 4.6* 4.1* 3.7* 3.4* 3.2* 3.0* 2.9* 2.7* 2.6* 2.5*
168 x 110 8.0* 7.7* 7.1* 6.6* 6.1* 5.5* 5.0* 4.6* 4.3* 4.0* 3.8* 3.6* 3.5* 3.4*
210 x 110 9.3* 9.0* 8.7* 8.3* 7.7* 6.9* 6.2* 5.8* 5.4* 5.1* 4.8* 4.6* 4.4* 4.2*
252 x 110 10.5* 10.1* 9.8* 9.5* 9.3* 8.3* 7.5* 6.9* 6.5* 6.1* 5.8* 5.5* 5.3* 5.1*
294 x 110 11.6* 11.2* 10.9* 10.6* 10.4* 9.7* 8.8* 8.1* 7.6* 7.1* 6.8* 6.4* 6.2* 5.9*
336 x 110 12.7* 12.3* 11.9* 11.6* 11.3* 10.9* 10.1* 9.3* 8.7* 8.2* 7.8* 7.4* 7.1* 6.8
378 x 110 13.6* 13.2* 12.9* 12.6* 12.3* 11.8* 11.4* 10.5* 9.8* 9.2* 8.7* 8.3* 8.0* 7.6*
420 x 110 14.6* 14.2* 13.8* 13.5* 13.2* 12.7* 12.3* 11.7* 10.9* 10.3* 9.7* 9.3* 8.9* 8.5*
462 x 110 15.5* 15.0* 14.7* 14.3* 14.0* 13.5* 13.1* 12.7* 12.0* 11.3* 10.7* 10.2* 9.8* 9.4#
504 x 110 16.3* 15.9* 15.5* 15.2* 14.9* 14.4* 13.9* 13.5* 13.2* 12.4* 11.7* 11.2# 10.7# 10.2#
546 x 110 17.1* 16.7* 16.3* 16.0* 15.7* 15.1* 14.7 14.3* 13.9* 13.4* 12.7# 12.1# 11.6# 11.1#
588 x 110 17.9* 17.5* 17.1* 16.8* 16.4* 15.9* 15.4* 15.0* 14.7* 14.4#13.7# 13.0# 12.5# 11.6#
630 x 110 18.7* 18.2* 17.9* 17.5* 17.2* 16.6* 16.2* 15.7* 15.4#15.0#14.6# 13.8# 12.6# 11.6#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 6.8* 6.4* 5.8* 5.3* 5.0* 4.4* 4.0* 3.7* 3.5* 3.3* 3.1* 3.0* 2.8* 2.7*
168 x 130 8.2* 7.9* 7.7* 7.2* 6.7* 6.0* 5.4* 5.0* 4.7* 4.4* 4.2* 4.0* 3.8* 3.6*
210 x 130 9.6* 9.2* 8.9* 8.7* 8.4* 7.5* 6.8* 6.3* 5.9* 5.5* 5.2* 5.0* 4.8* 4.6*
252 x 130 10.8* 10.4* 10.1* 9.8* 9.6* 9.0* 8.2* 7.6* 7.1* 6.7* 6.3* 6.0* 5.7* 5.5*
294 x 130 11.9* 11.5* 11.2* 10.9* 10.7* 10.3* 9.6* 8.9* 8.3* 7.8* 7.4* 7.0* 6.7* 6.4*
336 x 130 12.9* 12.6* 12.2* 11.9* 11.7* 11.2* 10.9* 10.2* 9.5* 8.9* 8.4* 8.0* 7.7* 7.4*
378 x 130 13.9* 13.5* 13.2* 12.9* 12.6* 12.2* 11.8* 11.4* 10.7* 10.1* 9.5* 9.1* 8.7* 8.3*
420 x 130 14.9* 14.5* 14.1* 13.8* 13.5* 13.1* 12.7* 12.3* 11.9* 11.2* 10.6* 10.1* 9.7* 9.3*
462 x 130 15.7* 15.4* 15.0* 14.7* 14.4* 13.9* 13.5* 13.1* 12.8* 12.3* 11.7* 11.1* 10.6* 10.2*
504 x 130 16.6* 16.2* 15.9* 15.5* 15.2* 14.7* 14.3* 13.9* 13.6* 13.3* 12.8* 12.2* 11.6* 11.2#
546 x 130 17.4* 17.0* 16.7* 16.3* 16.1* 15.5* 15.1* 14.7* 14.4* 14.1* 13.8* 13.2* 12.6# 12.1#
588 x 130 18.2* 17.8* 17.5* 17.1* 16.8* 16.3* 15.9* 15.5* 15.1* 14.8* 14.5* 14.2# 13.6# 13.0#
630 x 130 19.0* 18.6* 18.2* 17.9* 17.6* 17.1* 16.6* 16.2* 15.8* 15.5* 15.2# 15.0# 14.6# 13.8#
Roof load of Sheet (20 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
41
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 3.4 3.1 2.9 2.7 2.6 2.3 2.1 1.9 1.8 1.7 1.6 1.5 1.5 1.4
168 x 38 4.5 4.1 3.8 3.5 3.3 2.9 2.7 2.5 2.3 2.2 2.1 2.0 1.9 1.8
210 x 38 5.5 5.0 4.5 4.2 3.9 3.5 3.2 3.0 2.8 2.6 2.5 2.4 2.3* 2.2*
252 x 38 6.3 5.7 5.2 4.8 4.5 4.0 3.7 3.4 3.2 3.0* 2.9* 2.7* 2.6* 2.5*
294 x 38 7.0 6.3 5.8 5.4 5.0 4.5 4.1 3.8 3.6* 3.4* 3.2* 3.0* 2.9* 2.8#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 3.7 3.4 3.2 3.0 2.8 2.5 2.3 2.1 2.0 1.8 1.7 1.7 1.6 1.5
168 x 42 5.0 4.5 4.1 3.8 3.6 3.2 2.9 2.7 2.5 2.4 2.3 2.1 2.1 2.0
210 x 42 6.0 5.4 5.0 4.6 4.3 3.9 3.5 3.3 3.0 2.9 2.7 2.6 2.5* 2.4*
252 x 42 7.0 6.3 5.7 5.3 5.0 4.5 4.1 3.8 3.5 3.3* 3.2* 3.0* 2.9* 2.8*
294 x 42 7.8 7.0 6.4 6.0 5.6 5.0 4.6 4.2 4.0* 3.7* 3.6* 3.4* 3.2* 3.1#
336 x 42 8.6 7.7 7.1 6.6 6.2 5.5 5.1* 4.7* 4.4* 4.1* 3.9* 3.7# 3.6# 3.4#
378 x 42 9.3 8.4 7.7 7.1 6.7 6.0* 5.5* 5.1* 4.8* 4.5# 4.3# 4.1# 3.9# 3.7#
420 x 42 9.9 8.9 8.2 7.6 7.1 6.4* 5.9* 5.4* 5.1# 4.8# 4.6# 4.3# 4.1# 3.8#
Roof load of Sheet & Ceiling (40 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
42
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 4.8 4.4 4.0 3.7 3.5 3.1 2.9 2.6 2.5 2.3 2.2 2.1 2.0 1.9
168 x 65 6.2 5.9 5.4 5.0 4.7 4.2 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6
210 x 65 7.3 7.0 6.7 6.2 5.8 5.2 4.8 4.4 4.1 3.9 3.7 3.5 3.4 3.2
252 x 65 8.4 8.0 7.7 7.4 7.0 6.3 5.7 5.3 5.0 4.7 4.4 4.2* 4.1* 3.9*
294 x 65 9.3 8.9 8.6 8.3 8.0 7.3 6.7 6.2 5.8* 5.4* 5.2* 4.9* 4.7* 4.5*
336 x 65 10.3 9.8 9.4 9.1 8.9 8.2 7.5* 6.9* 6.5* 6.1* 5.8* 5.5* 5.3# 5.1#
378 x 65 11.2 10.7 10.3 9.9 9.6 9.0* 8.3* 7.7* 7.2* 6.8# 6.4# 6.1# 5.9# 5.6#
420 x 65 12.0 11.5 11.1 10.7 10.4 9.8* 9.0* 8.4* 7.8# 7.4# 7.0# 6.7# 6.3# 5.8#
462 x 65 12.8 12.3 11.8 11.5 11.1* 10.6* 9.8* 9.1# 8.5# 8.0# 7.5# 6.8# 6.3# 5.8#
504 x 65 13.6 13.0 12.6 12.2* 11.9* 11.3* 10.5# 9.7# 9.1# 8.3# 7.5# 6.8# 6.2# 5.8#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 5.2 4.8 4.6 4.3 4.0 3.6 3.3 3.0 2.8 2.7 2.5 2.4 2.3 2.2
168 x 85 6.6 6.3 6.1 5.7 5.3 4.8 4.4 4.0 3.8 3.6 3.4 3.2 3.1 3.0
210 x 85 7.8 7.4 7.1 6.9 6.6 6.0 5.4 5.0 4.7 4.5 4.2 4.0 3.9 3.7
252 x 85 8.9 8.5 8.1 7.9 7.6 7.1 6.5 6.0 5.7 5.3 5.1 4.8 4.6 4.5
294 x 85 9.9 9.4 9.1 8.8 8.5 8.1 7.6 7.0 6.6 6.2 5.9 5.6* 5.4* 5.2*
336 x 85 10.8 10.4 10.0 9.7 9.4 8.9 8.6 8.0 7.5* 7.1* 6.8* 6.4* 6.2* 5.9*
378 x 85 11.7 11.3 10.9 10.5 10.2 9.7 9.4 9.0* 8.5* 8.0* 7.6* 7.3# 6.9# 6.7#
420 x 85 12.6 12.1 11.7 11.3 11.0 10.5 10.1* 9.8* 9.4* 8.9# 8.4# 8.1# 7.7# 7.4#
462 x 85 13.5 12.9 12.5 12.1 11.8 11.3* 10.8* 10.5* 10.1# 9.8# 9.3# 8.9# 8.1# 7.5#
504 x 85 14.3 13.7 13.3 12.9 12.5 12.0* 11.5* 11.1#10.8#10.5# 9.7# 8.8# 8.1# 7.5#
546 x 85 15.1 14.5 14.0 13.6 13.3 12.7* 12.2* 11.8#11.5#10.7# 9.6# 8.8# 8.1# 7.5#
588 x 85 15.8 15.2 14.7 14.3 14.0* 13.4* 12.9#12.4#11.9#10.6# 9.6# 8.8# 8.1# 7.5#
Roof load of Sheet & Ceiling (40 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
43
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 5.6 5.3 5.0 4.8 4.5 4.1 3.7 3.4 3.2 3.0 2.9 2.7 2.6 2.5
168 x 110 7.0 6.7 6.4 6.2 6.0 5.4 4.9 4.6 4.3 4.0 3.8 3.7 3.5 3.4
210 x 110 8.2 7.8 7.5 7.3 7.1 6.7 6.2 5.7 5.4 5.1 4.8 4.6 4.4 4.2
252 x 110 9.3 8.9 8.6 8.3 8.1 7.7 7.4 6.9 6.4 6.1 5.8 5.5 5.3 5.1
294 x 110 10.4 9.9 9.6 9.3 9.0 8.6 8.3 8.0 7.5 7.1 6.7 6.4 6.1 5.9*
336 x 110 11.3 10.9 10.5 10.2 9.9 9.5 9.1 8.8 8.5 8.1 7.7* 7.3* 7.0* 6.7*
378 x 110 12.3 11.8 11.4 11.1 10.8 10.3 9.9 9.6 9.3 9.0* 8.6* 8.2* 7.9* 7.6*
420 x 110 13.2 12.7 12.3 11.9 11.6 11.1 10.7 10.3 10.0* 9.8* 9.5* 9.1* 8.8# 8.4#
462 x 110 14.0 13.5 13.1 12.7 12.4 11.9 11.4 11.1* 10.7* 10.5* 10.2# 10.0# 9.6# 9.3#
504 x 110 14.9 14.4 13.9 13.5 13.2 12.6 12.2* 11.8* 11.4* 11.2#10.9# 10.7# 10.4# 9.6#
546 x 110 15.7 15.1 14.7 14.3 13.9 13.4 12.9* 12.5* 12.1* 11.8#11.5# 11.3# 10.4# 9.6#
588 x 110 16.4 15.9 15.4 15.0 14.7 14.1* 13.6* 13.1* 12.8#12.5#12.2# 11.2# 10.3# 9.6#
630 x 110 17.2 16.6 16.2 15.7 15.4 14.8* 14.2* 13.8#13.4#13.1#12.2# 11.2# 10.3# 9.5#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 5.9 5.6 5.3 5.0 4.8 4.4 4.0 3.7 3.5 3.3 3.1 3.0 2.9 2.7
168 x 130 7.2 6.9 6.7 6.4 6.2 5.9 5.4 5.0 4.7 4.4 4.2 4.0 3.8 3.7
210 x 130 8.5 8.1 7.8 7.6 7.3 7.0 6.7 6.2 5.8 5.5 5.2 5.0 4.8 4.6
252 x 130 9.6 9.2 8.9 8.6 8.4 8.0 7.7 7.4 7.0 6.6 6.3 6.0 5.7 5.5
294 x 130 10.7 10.3 9.9 9.6 9.3 8.9 8.6 8.3 8.0 7.7 7.3 7.0 6.7 6.4
336 x 130 11.7 11.2 10.9 10.5 10.3 9.8 9.4 9.1 8.9 8.6 8.3 7.9 7.6* 7.3*
378 x 130 12.6 12.2 11.8 11.4 11.2 10.7 10.3 9.9 9.6 9.4 9.2* 8.9* 8.6* 8.2*
420 x 130 13.5 13.1 12.7 12.3 12.0 11.5 11.1 10.7 10.4 10.1* 9.9* 9.7* 9.5* 9.1*
462 x 130 14.4 13.9 13.5 13.1 12.8 12.3 11.8 11.5 11.1* 10.9* 10.6* 10.4* 10.2# 10.0#
504 x 130 15.2 14.7 14.3 13.9 13.6 13.0 12.6 12.2* 11.9* 11.6* 11.3* 11.1# 10.9# 10.7#
546 x 130 16.1 15.5 15.1 14.7 14.4 13.8 13.3 12.9* 12.6* 12.2* 12.0# 11.7# 11.5# 11.3#
588 x 130 16.8 16.3 15.9 15.5 15.1 14.5 14.0* 13.6* 13.2* 12.9#12.6# 12.4# 12.1# 11.2#
630 x 130 17.6 17.1 16.6 16.2 15.8 15.2 14.7* 14.3* 13.9* 13.6#13.3# 13.0# 12.1# 11.2#
Roof load of Sheet & Ceiling (40 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
44
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 2.9 2.6 2.4 2.3 2.1 1.9 1.8 1.6 1.5 1.4 1.4 1.3 1.2 1.2
168 x 38 3.8 3.4 3.2 2.9 2.7 2.4 2.2 2.1 1.9 1.8 1.7 1.6* 1.6* 1.5*
210 x 38 4.5 4.1 3.7 3.5 3.2 2.9 2.7 2.5* 2.3* 2.2* 2.0* 2.0* 1.9* 1.8*
252 x 38 5.2 4.6 4.2 3.9 3.7 3.3 3.0* 2.8* 2.6* 2.5* 2.3* 2.2# 2.1# 2.0#
294 x 38 5.7 5.1 4.7 4.3 4.1 3.6* 3.3* 3.1* 2.9* 2.7# 2.6# 2.5# 2.4# 2.2#
1.2 1.5 1.8 2.1 2.4 3 3.6 4.2 4.8 5.4 6 6.6 7.2 7.8
126 x 42 3.1 2.9 2.7 2.5 2.3 2.1 1.9 1.8 1.6 1.6 1.5 1.4 1.3 1.3
168 x 42 4.2 3.8 3.4 3.2 3.0 2.7 2.4 2.3 2.1 2.0 1.9 1.8* 1.7* 1.7*
210 x 42 5.0 4.5 4.1 3.8 3.6 3.2 2.9 2.7 2.5* 2.4* 2.3* 2.2* 2.1* 2.0*
252 x 42 5.7 5.2 4.7 4.4 4.1 3.7 3.4* 3.1* 2.9* 2.8* 2.6* 2.5# 2.4# 2.3#
294 x 42 6.4 5.8 5.3 4.9 4.6 4.1* 3.8* 3.5* 3.3# 3.1# 2.9# 2.8# 2.6# 2.4#
336 x 42 7.0 6.3 5.8 5.3 5.0* 4.5* 4.1* 3.8# 3.6# 3.4# 3.2# 2.9# 2.6# 2.4#
378 x 42 7.4 6.7 6.2* 5.7* 5.4* 4.8* 4.4# 4.1# 3.8# 3.5# 3.2# 2.9# 2.6# 2.4#
420 x 42 7.9 7.1 6.5* 6.1* 5.7* 5.1# 4.7# 4.3# 3.9# 3.5# 3.1# 2.9# 2.6# 2.4#
Roof load of Tiles (70kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
45
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 4.1 3.8 3.5 3.2 3.0 2.7 2.5 2.3 2.1 2.0 1.9 1.8 1.7 1.7
168 x 65 5.4 5.0 4.6 4.3 4.0 3.6 3.3 3.1 2.9 2.7 2.6 2.4 2.3 2.2
210 x 65 6.5 6.1 5.8 5.4 5.0 4.5 4.1 3.8 3.6 3.4* 3.2* 3.1* 2.9* 2.8*
252 x 65 7.4 7.0 6.7 6.4 6.0 5.4 4.9* 4.6* 4.3* 4.0* 3.8* 3.6* 3.5# 3.3#
294 x 65 8.3 7.9 7.5 7.3 6.8 6.1* 5.6* 5.2* 4.9* 4.6# 4.4# 4.2# 4.0# 3.8#
336 x 65 9.1 8.7 8.3 8.0 7.6* 6.8* 6.3* 5.8# 5.5# 5.2# 4.9# 4.4# 4.1# 3.8#
378 x 65 9.9 9.5 9.1 8.8* 8.4* 7.5* 6.9# 6.4# 6.0# 5.4# 4.9# 4.4# 4.1# 3.8#
420 x 65 10.7 10.2 9.8* 9.5* 9.1* 8.2# 7.5# 6.8# 6.0# 5.4# 4.8# 4.4# 4.0# 3.7#
462 x 65 11.5 10.9* 10.5* 10.1* 9.8# 8.8# 7.9# 6.8# 6.0# 5.3# 4.8# 4.4# 4.0# 3.7#
504 x 65 12.2 11.6* 11.2* 10.8#10.5# 9.3# 7.8# 6.8# 6.0# 5.3# 4.8# 4.4# 4.0# 3.7#
1.2 1.5 1.8 2.1 2.4 3 3.6 4.2 4.8 5.4 6 6.6 7.2 7.8
126 x 85 4.4 4.1 3.9 3.7 3.4 3.1 2.8 2.6 2.4 2.3 2.2 2.1 2.0 1.9
168 x 85 5.8 5.4 5.1 4.9 4.6 4.1 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6
210 x 85 6.9 6.5 6.3 6.0 5.7 5.1 4.7 4.4 4.1 3.9 3.7 3.5 3.3* 3.2*
252 x 85 7.9 7.5 7.2 6.9 6.7 6.1 5.6 5.2 4.9* 4.6* 4.4* 4.2* 4.0* 3.9*
294 x 85 8.8 8.4 8.0 7.8 7.5 7.1 6.6* 6.1* 5.7* 5.4* 5.1* 4.9# 4.7# 4.5#
336 x 85 9.7 9.2 8.8 8.5 8.3 7.9* 7.5* 6.9* 6.5# 6.1# 5.8# 5.6# 5.3# 4.9#
378 x 85 10.5 10.0 9.6 9.3 9.0* 8.6* 8.2* 7.8# 7.3# 6.9# 6.3# 5.7# 5.3# 4.9#
420 x 85 11.3 10.8 10.4 10.1* 9.8* 9.3* 8.9# 8.6# 7.8# 6.9# 6.3# 5.7# 5.3# 4.9#
462 x 85 12.1 11.6 11.1 10.8* 10.5* 9.9# 9.5# 8.8# 7.7# 6.9# 6.2# 5.7# 5.2# 4.9#
504 x 85 12.9 12.3 11.9* 11.5* 11.1* 10.6#10.0# 8.7# 7.7# 6.9# 6.2# 5.7# 5.2# 4.8#
546 x 85 13.6 13.0* 12.5* 12.1* 11.8#11.2#10.0# 8.7# 7.6# 6.8# 6.2# 5.7# 5.2# 4.8#
588 x 85 14.3 13.7* 13.2* 12.8* 12.4#11.7# 9.9# 8.6# 7.6# 6.8# 6.2# 5.6# 5.2# 4.8#
Roof load of Tiles (70kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
46
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 4.8 4.5 4.2 4.0 3.8 3.5 3.2 3.0 2.8 2.6 2.5 2.4 2.3 2.2
168 x 110 6.2 5.9 5.6 5.3 5.1 4.7 4.3 4.0 3.7 3.5 3.3 3.2 3.0 2.9
210 x 110 7.3 6.9 6.7 6.4 6.2 5.8 5.3 4.9 4.6 4.4 4.2 4.0 3.8 3.6
252 x 110 8.3 7.9 7.6 7.3 7.1 6.8 6.4 5.9 5.6 5.2 5.0* 4.8* 4.6* 4.4*
294 x 110 9.3 8.9 8.5 8.2 8.0 7.6 7.3 6.9 6.5* 6.1* 5.8* 5.5* 5.3* 5.1*
336 x 110 10.2 9.7 9.4 9.1 8.8 8.4 8.0* 7.7* 7.4* 7.0* 6.6* 6.3# 6.1# 5.8#
378 x 110 11.1 10.6 10.2 9.9 9.6 9.1 8.7* 8.4* 8.2# 7.8# 7.4# 7.1# 6.8# 6.3#
420 x 110 11.9 11.4 11.0 10.6 10.3 9.8* 9.4* 9.1* 8.8# 8.6# 8.0# 7.3# 6.7# 6.2#
462 x 110 12.7 12.2 11.8 11.4 11.1* 10.5* 10.1* 9.8# 9.5# 8.8# 8.0# 7.3# 6.7# 6.2#
504 x 110 13.5 13.0 12.5 12.1 11.8* 11.2* 10.8#10.4# 9.8# 8.8# 7.9# 7.3# 6.7# 6.2#
546 x 110 14.3 13.7 13.2 12.8* 12.5* 11.9* 11.4#11.0# 9.7# 8.7# 7.9# 7.2# 6.7# 6.2#
588 x 110 15.0 14.4 13.9* 13.5* 13.1* 12.5#12.1#10.9# 9.6# 8.7# 7.9# 7.2# 6.6# 6.1#
630 x 110 15.7 15.1* 14.6* 14.2* 13.8* 13.2#12.4#10.8# 9.6# 8.6# 7.8# 7.2# 6.6# 6.1#
1.2 1.5 1.8 2.1 2.4 3 3.6 4.2 4.8 5.4 6 6.6 7.2 7.8
126 x 130 5.0 4.7 4.4 4.2 4.1 3.8 3.5 3.2 3.0 2.8 2.7 2.6 2.5 2.4
168 x 130 6.4 6.1 5.9 5.6 5.4 5.0 4.6 4.3 4.0 3.8 3.6 3.4 3.3 3.2
210 x 130 7.6 7.2 6.9 6.7 6.5 6.1 5.8 5.4 5.0 4.7 4.5 4.3 4.1 4.0
252 x 130 8.6 8.2 7.9 7.6 7.4 7.0 6.7 6.4 6.0 5.7 5.4 5.2 4.9* 4.8*
294 x 130 9.6 9.2 8.8 8.5 8.3 7.9 7.5 7.3 7.0 6.6* 6.3* 6.0* 5.8* 5.5*
336 x 130 10.5 10.1 9.7 9.4 9.1 8.7 8.3 8.0 7.8* 7.5* 7.2* 6.9* 6.6# 6.3#
378 x 130 11.4 11.0 10.6 10.2 9.9 9.5 9.1 8.8* 8.5* 8.3* 8.0# 7.7# 7.4# 7.1#
420 x 130 12.3 11.8 11.4 11.0 10.7 10.2 9.8* 9.5* 9.2* 8.9# 8.7# 8.5# 7.9# 7.3#
462 x 130 13.1 12.6 12.2 11.8 11.5 10.9* 10.5* 10.1* 9.8# 9.6# 9.3# 8.5# 7.9# 7.3#
504 x 130 13.9 13.4 12.9 12.5 12.2 11.6* 11.2* 10.8#10.5#10.2# 9.3# 8.5# 7.8# 7.3#
546 x 130 14.7 14.1 13.7 13.3 12.9* 12.3* 11.8* 11.5#11.1#10.2# 9.2# 8.4# 7.8# 7.2#
588 x 130 15.5 14.9 14.4 14.0* 13.6* 13.0* 12.5#12.1#11.2#10.1# 9.2# 8.4# 7.7# 7.2#
630 x 130 16.2 15.6 15.1* 14.7* 14.3* 13.6#13.1#12.5#11.1#10.0# 9.1# 8.3# 7.7# 7.2#
Roof load of Tiles (70kg/m2)Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
47
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 38 2.7 2.4 2.2 2.0 1.9 1.7 1.5 1.4 1.3 1.3 1.2 1.1 1.1 1.0
168 x 38 3.4 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.7 1.6* 1.5* 1.4* 1.4* 1.3*
210 x 38 4.0 3.6 3.3 3.1 2.9 2.6 2.3* 2.2* 2.0* 1.9* 1.8* 1.7# 1.6# 1.6#
252 x 38 4.6 4.1 3.8 3.5 3.3 2.9* 2.7* 2.5* 2.3# 2.2# 2.1# 2.0# 1.9# 1.7#
294 x 38 5.0 4.5 4.1 3.8 3.6* 3.2* 2.9* 2.7# 2.5# 2.4# 2.2# 2.0# 1.9# 1.7#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 42 2.9 2.6 2.4 2.2 2.1 1.8 1.7 1.6 1.4 1.4 1.3 1.2 1.2 1.1
168 x 42 3.7 3.3 3.0 2.8 2.6 2.4 2.2 2.0 1.9* 1.8* 1.7* 1.6* 1.5* 1.5*
210 x 42 4.4 4.0 3.6 3.4 3.2 2.8 2.6* 2.4* 2.2* 2.1* 2.0* 1.9# 1.8# 1.7#
252 x 42 5.1 4.6 4.2 3.9 3.6 3.3* 3.0* 2.8* 2.6# 2.4# 2.3# 2.2# 2.1# 1.9#
294 x 42 5.7 5.1 4.7 4.3* 4.1* 3.6* 3.3* 3.1# 2.9# 2.7# 2.5# 2.2# 2.0# 1.9#
336 x 42 6.2 5.6 5.1* 4.7* 4.4* 4.0# 3.6# 3.4# 3.1# 2.7# 2.5# 2.2# 2.0# 1.9#
378 x 42 6.6 6.0* 5.5* 5.1* 4.8* 4.3# 3.9# 3.5# 3.1# 2.7# 2.5# 2.2# 2.0# 1.9#
420 x 42 7.0* 6.3* 5.8* 5.4* 5.0# 4.5# 4.1# 3.5# 3.1# 2.7# 2.4# 2.2# 2.0# 1.9#
Roof load of Tiles & Ceiling (90 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
48
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 65 3.8 3.4 3.1 2.8 2.7 2.4 2.2 2.0 1.9 1.8 1.7 1.6 1.5 1.5
168 x 65 5.0 4.5 4.1 3.8 3.6 3.2 2.9 2.7 2.5 2.4 2.3 2.1 2.1* 2.0*
210 x 65 6.1 5.6 5.1 4.7 4.4 4.0 3.6 3.4* 3.2* 3.0* 2.8* 2.7* 2.6* 2.5#
252 x 65 7.0 6.6 6.1 5.6 5.3 4.7* 4.3* 4.0* 3.8* 3.5# 3.4# 3.2# 3.1# 2.9#
294 x 65 7.8 7.4 6.9 6.4* 6.0* 5.4* 5.0* 4.6# 4.3# 4.1# 3.8# 3.5# 3.2# 2.9#
336 x 65 8.6 8.2 7.7* 7.2* 6.8* 6.1# 5.6# 5.2# 4.7# 4.2# 3.8# 3.5# 3.2# 2.9#
378 x 65 9.4 8.9* 8.5* 7.9* 7.4* 6.7# 6.1# 5.4# 4.7# 4.2# 3.8# 3.5# 3.2# 2.9#
420 x 65 10.1 9.6* 9.3* 8.6# 8.1# 7.3# 6.2# 5.4# 4.7# 4.2# 3.8# 3.4# 3.2# 2.9#
462 x 65 10.9* 10.3* 9.9# 9.3# 8.7# 7.4# 6.2# 5.3# 4.7# 4.2# 3.8# 3.4# 3.2# 2.9#
504 x 65 11.6* 11.0* 10.6# 9.9# 9.0# 7.3# 6.2# 5.3# 4.7# 4.2# 3.8# 3.4# 3.1# 2.9#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 85 4.1 3.8 3.5 3.3 3.0 2.7 2.5 2.3 2.2 2.0 1.9 1.8 1.8 1.7
168 x 85 5.4 5.0 4.7 4.3 4.1 3.6 3.3 3.1 2.9 2.7 2.6 2.5 2.4 2.3
210 x 85 6.5 6.2 5.8 5.4 5.1 4.5 4.2 3.9 3.6 3.4* 3.2* 3.1* 2.9* 2.8*
252 x 85 7.4 7.1 6.8 6.5 6.1 5.4 5.0* 4.6* 4.3* 4.1* 3.9* 3.7* 3.5# 3.4#
294 x 85 8.3 7.9 7.6 7.3 7.1 6.3* 5.8* 5.4* 5.0* 4.8# 4.5# 4.3# 4.1# 3.8#
336 x 85 9.2 8.7 8.4 8.1 7.8* 7.2* 6.6* 6.1# 5.8# 5.4# 5.0# 4.5# 4.1# 3.8#
378 x 85 10.0 9.5 9.1 8.8* 8.5* 8.1# 7.4# 6.9# 6.1# 5.5# 4.9# 4.5# 4.1# 3.8#
420 x 85 10.8 10.2 9.8* 9.5* 9.2* 8.7# 8.0# 6.9# 6.1# 5.5# 4.9# 4.5# 4.1# 3.8#
462 x 85 11.5 11.0* 10.5* 10.2* 9.9# 9.4# 8.0# 6.9# 6.1# 5.4# 4.9# 4.5# 4.1# 3.8#
504 x 85 12.2 11.7* 11.2* 10.8#10.5# 9.4# 8.0# 6.9# 6.1# 5.4# 4.9# 4.5# 4.1# 3.8#
546 x 85 13.0* 12.4* 11.9* 11.5#11.2# 9.4# 7.9# 6.8# 6.0# 5.4# 4.9# 4.4# 4.1# 3.8#
588 x 85 13.6* 13.0* 12.5#12.1#11.4# 9.3# 7.9# 6.8# 6.0# 5.4# 4.9# 4.4# 4.1# 3.8#
Roof load of Tiles & Ceiling (90 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
49
ROOF BEAMS
Continuous Span
Beam Roof Load Width (m)
Size 1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 110 4.4 4.1 3.9 3.7 3.5 3.1 2.8 2.6 2.5 2.3 2.2 2.1 2.0 1.9
168 x 110 5.9 5.4 5.1 4.9 4.6 4.1 3.8 3.5 3.3 3.1 2.9 2.8 2.7 2.6
210 x 110 6.9 6.6 6.3 6.1 5.7 5.2 4.7 4.4 4.1 3.9 3.7 3.5 3.4* 3.2*
252 x 110 7.9 7.5 7.2 6.9 6.7 6.2 5.6 5.2 4.9* 4.6* 4.4* 4.2* 4.0* 3.9*
294 x 110 8.8 8.4 8.0 7.8 7.5 7.1 6.6* 6.1* 5.7* 5.4* 5.1* 4.9# 4.7# 4.5#
336 x 110 9.7 9.2 8.9 8.6 8.3 7.9* 7.5* 7.0* 6.5# 6.2# 5.9# 5.6# 5.3# 4.9#
378 x 110 10.5 10.0 9.7 9.3 9.0 8.6* 8.2* 7.8# 7.3# 6.9# 6.3# 5.8# 5.3# 4.9#
420 x 110 11.3 10.8 10.4 10.1* 9.8* 9.3* 8.9# 8.6# 7.8# 7.0# 6.3# 5.8# 5.3# 4.9#
462 x 110 12.1 11.6 11.2 10.8* 10.5* 10.0# 9.5# 8.8# 7.8# 7.0# 6.3# 5.7# 5.3# 4.9#
504 x 110 12.9 12.3 11.9* 11.5* 11.2* 10.6#10.1# 8.8# 7.7# 6.9# 6.3# 5.7# 5.3# 4.9#
546 x 110 13.6 13.0* 12.6* 12.2* 11.8#11.2#10.0# 8.7# 7.7# 6.9# 6.2# 5.7# 5.2# 4.8#
588 x 110 14.4 13.7* 13.2* 12.8* 12.5#11.7#10.0# 8.7# 7.7# 6.9# 6.2# 5.7# 5.2# 4.8#
630 x 110 15.0* 14.4* 13.9* 13.5#13.1#11.6# 9.9# 8.6# 7.6# 6.8# 6.2# 5.6# 5.2# 4.8#
1.2 1.5 1.8 2.1 2.4 3.0 3.6 4.2 4.8 5.4 6.0 6.6 7.2 7.8
126 x 130 4.7 4.4 4.1 3.9 3.8 3.4 3.1 2.8 2.7 2.5 2.4 2.3 2.2 2.1
168 x 130 6.1 5.7 5.4 5.1 5.0 4.5 4.1 3.8 3.6 3.4 3.2 3.0 2.9 2.8
210 x 130 7.2 6.8 6.5 6.3 6.1 5.6 5.1 4.7 4.4 4.2 4.0 3.8 3.6 3.5
252 x 130 8.2 7.8 7.5 7.2 7.0 6.6 6.1 5.7 5.3 5.0 4.8* 4.6* 4.4* 4.2*
294 x 130 9.1 8.7 8.3 8.1 7.8 7.4 7.1 6.6* 6.2* 5.9* 5.6* 5.3* 5.1* 4.9#
336 x 130 10.0 9.6 9.2 8.9 8.6 8.2 7.9* 7.5* 7.1* 6.7* 6.4# 6.1# 5.8# 5.6#
378 x 130 10.9 10.4 10.0 9.7 9.4 8.9* 8.6* 8.3* 7.9# 7.5# 7.1# 6.8# 6.3# 5.8#
420 x 130 11.7 11.2 10.8 10.4 10.1 9.6* 9.3* 8.9# 8.7# 8.2# 7.4# 6.8# 6.2# 5.8#
462 x 130 12.5 12.0 11.6 11.2 10.9* 10.3* 9.9# 9.6# 9.1# 8.1# 7.4# 6.7# 6.2# 5.7#
504 x 130 13.3 12.8 12.3 11.9* 11.6* 11.0* 10.6#10.2# 9.0# 8.1# 7.3# 6.7# 6.2# 5.7#
546 x 130 14.1 13.5 13.0* 12.6* 12.2* 11.7#11.2#10.2# 9.0# 8.1# 7.3# 6.7# 6.1# 5.7#
588 x 130 14.8 14.2 13.7* 13.3* 12.9* 12.3#11.6#10.1# 8.9# 8.0# 7.3# 6.6# 6.1# 5.7#
630 x 130 15.5 14.9* 14.4* 13.9* 13.6#12.9#11.5#10.0# 8.9# 8.0# 7.2# 6.6# 6.1# 5.6#
B i L th
Roof load of Tiles & Ceiling (90 kg/m2).Trusses or Rafters @ 25deg N3 WIND AREAS
Maximum Permissible Span (m)
Bearing Lengths: For continuous spans: 45mm for end supports, and 65mm for intermediate supports.
* For continuous spans: denotes member must have a min 65mm bearing length at the end supports, and 85mm internal supports.
# For continuous spans: denotes member must have a min 85mm bearinglength at the end supports,and 110mm for intermediate supports.
50
ROOF BEAMS
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