Butt Purlin System Load Table

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Section Reference Weight kg/m Working loads Ultimate U.D.L. in kN/span
Total kN Allowable loading in kN/m2
purlin centres in mm
Deflection Down Load Uplift - Metal cladding
Number of anti sag rods
1000 1200 1500 1800 2000 2400 180 360 0 1 2
Span 3.50m
142.Z.13 2.84 8.73 2.49 2.08 1.66 1.39 1.25 1.04 8.73 4.31 15.10 8.03 15.10 15.10
142.Z.14 3.05 9.37 2.68 2.23 1.79 1.49 1.34 1.12 9.37 4.63 17.04 9.08 17.04 17.04
Span 4.00m
142.Z.13 2.84 6.64 1.66 1.38 1.11 0.92 0.83 0.69 6.64 3.27 13.22 6.98 13.22 13.22
142.Z.14 3.05 7.14 1.78 1.49 1.19 0.99 0.89 0.74 7.14 3.51 14.91 7.91 14.91 14.91
142.Z.15 3.26 7.62 1.90 1.59 1.27 1.06 0.95 0.79 7.62 3.74 16.62 8.82 16.62 16.62
142.Z.16 3.47 8.10 2.03 1.69 1.35 1.13 1.01 0.84 8.10 3.98 18.33 9.71 18.33 18.33
Span 4.50m
172.Z.13 3.25 8.61 1.91 1.60 1.28 1.06 0.96 0.80 8.61 4.24 14.66 6.93 14.66 14.66
172.Z.14 3.49 9.25 2.06 1.71 1.37 1.14 1.03 0.86 9.25 4.55 16.62 7.91 16.62 16.62
172.Z.15 3.73 9.89 2.20 1.83 1.46 1.22 1.10 0.92 9.89 4.86 18.61 8.89 18.61 18.61
172.Z.16 3.98 10.52 2.34 1.95 1.56 1.30 1.17 0.97 10.52 5.17 20.63 9.85 20.63 20.63
Span 5.00m
172.Z.13 3.25 6.93 1.39 1.16 0.92 0.77 0.69 0.58 6.93 3.39 13.19 6.15 13.19 13.19
172.Z.14 3.49 7.45 1.49 1.24 0.99 0.83 0.74 0.62 7.45 3.64 14.96 7.03 14.96 14.96
172.Z.15 3.73 7.96 1.59 1.33 1.06 0.88 0.80 0.66 7.96 3.89 16.75 7.90 16.75 16.75
202.Z.14 3.82 10.90 2.18 1.82 1.45 1.21 1.09 0.91 10.90 5.36 17.73 7.34 17.73 17.73
202.Z.15 4.09 11.65 2.33 1.94 1.55 1.29 1.16 0.97 11.65 5.72 19.91 8.29 19.91 19.91
202.Z.16 4.35 12.40 2.48 2.07 1.65 1.38 1.24 1.03 12.40 6.09 22.10 9.23 22.10 22.10
Span 5.50m
172.Z.13 3.25 5.69 1.03 0.86 0.69 0.57 0.52 0.43 5.69 2.76 12.00 5.51 12.00 12.00
172.Z.14 3.49 6.11 1.11 0.93 0.74 0.62 0.56 0.46 6.11 2.96 13.60 6.29 13.02 13.60
172.Z.15 3.73 6.53 1.19 0.99 0.79 0.66 0.59 0.49 6.53 3.16 15.23 7.07 13.88 15.23
202.Z.14 3.82 8.96 1.63 1.36 1.09 0.90 0.81 0.68 8.96 4.37 16.12 6.57 15.26 16.12
202.Z.15 4.09 9.57 1.74 1.45 1.16 0.97 0.87 0.73 9.57 4.68 18.10 7.42 16.28 18.10
202.Z.16 4.35 10.19 1.85 1.54 1.23 1.03 0.93 0.77 10.19 4.98 20.09 8.27 17.29 20.09
Span 6.00m
202.Z.14 3.82 7.47 1.25 1.04 0.83 0.69 0.62 0.52 7.47 3.62 14.77 5.92 11.96 14.77
202.Z.15 4.09 7.99 1.33 1.11 0.89 0.74 0.67 0.55 7.99 3.87 16.59 6.69 12.77 16.59
202.Z.16 4.35 8.50 1.42 1.18 0.94 0.79 0.71 0.59 8.50 4.12 18.42 7.45 13.56 18.42
232.Z.15 4.44 11.15 1.86 1.55 1.24 1.03 0.93 0.77 11.15 5.44 19.10 6.84 14.56 19.10
232.Z.16 4.73 11.86 1.98 1.65 1.32 1.10 0.99 0.82 11.86 5.79 21.27 7.65 15.49 21.27
232.Z.18 5.30 13.29 2.21 1.85 1.48 1.23 1.11 0.92 13.29 6.49 25.59 9.22 17.30 24.25
Span 6.50m
202.Z.18 4.87 8.04 1.24 1.03 0.82 0.69 0.62 0.52 8.04 3.87 20.38 8.09 12.06 17.37
202.Z.20 5.40 8.89 1.37 1.14 0.91 0.76 0.68 0.57 8.89 4.27 23.67 9.33 13.31 19.13
232.Z.15 4.44 9.44 1.45 1.21 0.97 0.81 0.73 0.61 9.44 4.58 17.63 6.20 11.58 16.95
232.Z.16 4.73 10.05 1.55 1.29 1.03 0.86 0.77 0.64 10.05 4.87 19.63 6.94 12.32 18.02
262.Z.16 5.11 13.50 2.08 1.73 1.39 1.15 1.04 0.87 13.50 6.59 22.11 6.99 13.95 20.59
262.Z.18 5.73 15.13 2.33 1.94 1.55 1.29 1.16 0.97 15.13 7.38 26.76 8.50 15.59 22.98
Span 7.00m
232.Z.15 4.44 8.08 1.15 0.96 0.77 0.64 0.58 0.48 8.08 3.89 16.37 5.65 9.36 14.02
232.Z.16 4.73 8.60 1.23 1.02 0.82 0.68 0.61 0.51 8.60 4.14 18.23 6.33 9.96 14.91
262.Z.16 5.11 11.57 1.65 1.38 1.10 0.92 0.83 0.69 11.57 5.61 20.53 6.37 11.27 16.98
262.Z.18 5.73 12.96 1.85 1.54 1.23 1.03 0.93 0.77 12.96 6.29 24.84 7.75 12.60 18.94
262.Z.20 6.34 14.34 2.05 1.71 1.37 1.14 1.02 0.85 14.34 6.95 29.09 9.04 13.81 20.73
Span 7.50m
262.Z.16 5.11 10.01 1.33 1.11 0.89 0.74 0.67 0.56 10.01 4.82 19.16 5.84 9.23 14.07
262.Z.18 5.73 11.22 1.50 1.25 1.00 0.83 0.75 0.62 11.22 5.40 23.19 7.10 10.33 15.70
262.Z.20 6.34 12.41 1.65 1.38 1.10 0.92 0.83 0.69 12.41 5.97 27.15 8.29 11.32 17.18
262.Z.23 7.26 14.18 1.89 1.58 1.26 1.05 0.95 0.79 14.18 6.82 32.91 9.89 12.98 19.59
262.Z.25 7.86 15.35 2.05 1.71 1.36 1.14 1.02 0.85 15.35 7.38 36.65 10.85 14.04 21.13
Span 8.00m
262.Z.18 5.73 9.78 1.22 1.02 0.81 0.68 0.61 0.51 9.78 4.66 21.74 - 8.57 13.11
262.Z.20 6.34 10.82 1.35 1.13 0.90 0.75 0.68 0.56 10.82 5.16 25.45 - 9.40 14.35
262.Z.23 7.26 12.36 1.55 1.29 1.03 0.86 0.77 0.64 12.36 5.90 30.86 - 10.79 16.37
262.Z.25 7.86 13.38 1.67 1.39 1.11 0.93 0.84 0.70 13.38 6.38 34.36 - 11.69 17.66
302.Z.20 7.86 18.89 2.36 1.97 1.57 1.31 1.18 0.98 18.89 9.14 33.40 11.11 27.43 33.40
Span 8.50m
262.Z.20 6.34 9.50 1.12 0.93 0.74 0.62 0.56 0.47 9.50 4.48 23.95 - 7.90 12.09
262.Z.23 7.26 10.85 1.28 1.06 0.85 0.71 0.64 0.53 10.85 5.12 29.04 - 9.07 13.80
262.Z.25 7.86 11.74 1.38 1.15 0.92 0.77 0.69 0.58 11.74 5.54 32.34 - 9.83 14.89
302.Z.20 7.86 16.62 1.96 1.63 1.30 1.09 0.98 0.81 16.62 7.98 31.43 - 23.10 31.43
302.Z.23 9.01 19.02 2.24 1.86 1.49 1.24 1.12 0.93 19.02 9.13 39.55 - 26.43 37.47
Span 9.00m
262.Z.25 7.86 10.37 1.15 0.96 0.77 0.64 0.58 0.48 10.37 4.84 30.54 - - 12.66
302.Z.20 7.86 14.72 1.64 1.36 1.09 0.91 0.82 0.68 14.72 7.01 29.69 - 19.61 28.66
302.Z.23 9.01 16.84 1.87 1.56 1.25 1.04 0.94 0.78 16.84 8.02 37.36 - 22.45 32.74
302.Z.25 9.76 18.24 2.03 1.69 1.35 1.13 1.01 0.84 18.24 8.69 42.45 - 24.17 35.24
Span 9.50m
302.Z.20 7.87 13.10 1.38 1.15 0.92 0.77 0.69 0.57 13.10 6.18 28.12 - 16.78 24.99
302.Z.23 9.01 14.99 1.58 1.31 1.05 0.88 0.79 0.66 14.99 7.07 35.39 - 19.23 28.55
302.Z.25 9.76 16.23 1.71 1.42 1.14 0.95 0.85 0.71 16.23 7.66 40.22 - 20.71 30.72
342.Z.23 9.73 20.36 2.14 1.79 1.43 1.19 1.07 0.89 20.36 9.73 40.18 - 21.65 32.42
Span 10.00m
302.Z.23 9.01 13.40 1.34 1.12 0.89 0.74 0.67 0.56 13.40 6.26 33.62 - 16.59 24.93
302.Z.25 9.76 14.51 1.45 1.21 0.97 0.81 0.73 0.60 14.51 6.78 38.21 - 17.87 26.82
342.Z.23 9.73 18.24 1.82 1.52 1.22 1.01 0.91 0.76 18.24 8.64 38.17 - 18.67 28.25
342.Z.25 10.55 19.76 1.98 1.65 1.32 1.10 0.99 0.82 19.76 9.37 43.52 - 20.21 30.52
342.Z.27 11.37 21.28 2.13 1.77 1.42 1.18 1.06 0.89 21.28 10.08 48.79 - 21.74 32.77
Span 10.50m
302.Z.25 9.76 13.03 1.24 1.03 0.83 0.69 0.62 0.52 13.03 6.01 36.39 - 15.53 23.48
342.Z.23 9.73 16.41 1.56 1.30 1.04 0.87 0.78 0.65 16.41 7.70 36.36 - 16.22 24.70
342.Z.25 10.55 17.78 1.69 1.41 1.13 0.94 0.85 0.71 17.78 8.35 41.45 - 17.56 26.69
342.Z.27 11.37 19.14 1.82 1.52 1.22 1.01 0.91 0.76 19.14 8.98 46.47 - 18.90 28.66
Span 11.00m
342.Z.23 9.73 14.82 1.35 1.12 0.90 0.75 0.67 0.56 14.82 6.88 34.70 - 14.18 21.69
342.Z.25 10.55 16.05 1.46 1.22 0.97 0.81 0.73 0.61 16.05 7.46 39.56 - 15.36 23.44
342.Z.27 11.37 17.28 1.57 1.31 1.05 0.87 0.79 0.65 17.28 8.03 44.36 - 16.53 25.18
Span 11.50m
342.Z.25 10.55 14.54 1.26 1.05 0.84 0.70 0.63 0.53 14.54 6.67 37.84 - 13.51 20.68
342.Z.27 11.37 15.65 1.36 1.13 0.91 0.76 0.68 0.57 15.65 7.18 42.43 - 14.55 22.21
342.Z.30 12.58 17.30 1.50 1.25 1.00 0.84 0.75 0.63 17.30 7.94 49.15 - 16.06 24.42
Span 12.00m
342.Z.27 11.37 14.21 1.18 0.99 0.79 0.66 0.59 0.49 14.21 6.44 40.66 - 12.87 19.69
342.Z.30 12.58 15.71 1.31 1.09 0.87 0.73 0.65 0.55 15.71 7.12 47.10 - 14.22 21.64

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