Load Span Tables

Allowable Uniform Loads in Pounds per Square Foot

Panel
Gauge

Span Type

Load Type

Span in Feet

3.0

4.0

5.0

6.0

7.0

8.0

9.0

29
Ga.

Single

Negative Wind Load

67.49

37.96

24.30

16.87

11.91

7.98

5.60

Live Load/Deflection

80.84

45.47

29.10

20.21

14.85

11.03

7.75

2-Span

Negative Wind Load

78.35

44.67

28.77

20.05

14.76

11.32

8.95

Live Load/Deflection

66.02

37.49

24.10

16.78

12.34

9.46

7.48

3-Span

Negative Wind Load

96.65

55.41

35.78

24.97

18.40

14.12

11.17

Live Load/Deflection

81.75

46.61

30.02

20.92

15.40

11.81

9.34

4-Span

Negative Wind Load

90.63

51.85

33.46

23.34

17.19

13.19

10.43

Live Load/Deflection

76.56

43.59

28.05

19.54

14.39

11.03

8.72

26
Ga.

Single

Negative Wind Load

106.10

59.68

38.20

26.52

17.48

11.71

8.22

Live Load/Deflection

133.83

75.28

48.18

33.46

24.58

17.05

11.98

2-Span

Negative Wind Load

130.50

74.21

47.74

33.24

24.46

18.75

14.83

Live Load/Deflection

104.42

59.14

37.97

26.42

19.43

14.89

11.77

3-Span

Negative Wind Load

161.40

92.19

59.43

41.44

30.45

23.31

17.07

Live Load/Deflection

129.63

73.64

47.35

32.96

24.26

18.59

14.70

4-Span

Negative Wind Load

151.20

86.23

55.55

38.71

28.50

21.85

17.28

Live Load/Deflection

121.28

68.83

44.23

30.79

22.65

17.36

13.72

24
Ga.

Single

Negative Wind Load

116.62

65.60

41.98

29.15

21.42

15.90

11.17

Live Load/Deflection

127.22

71.56

45.80

31.81

23.37

17.89

14.14

2-Span

Negative Wind Load

124.52

70.69

45.44

31.63

23.27

17.84

14.10

Live Load/Deflection

114.52

64.93

41.71

29.02

21.35

16.36

12.93

3-Span

Negative Wind Load

154.22

87.90

56.61

39.45

29.04

22.26

17.61

Live Load/Deflection

142.04

80.80

51.98

36.20

26.64

20.42

16.15

4-Span

Negative Wind Load

144.41

82.20

52.90

36.85

27.12

20.79

16.44

Live Load/Deflection

132.94

75.53

48.57

33.81

24.88

19.07

15.08

22
Ga.

Single

Negative Wind Load

155.91

87.70

56.13

38.98

28.64

21.93

15.67

Live Load/Deflection

171.09

86.24

61.59

42.77

31.42

24.06

19.01

2-Span

Negative Wind Load

167.07

94.95

61.06

42.51

31.28

23.98

18.96

Live Load/Deflection

152.86

86.72

55.73

38.78

28.53

21.86

17.29

3-Span

Negative Wind Load

206.75

117.99

76.04

53.00

39.03

29.93

23.67

Live Load/Deflection

189.46

107.88

69.44

48.37

35.61

27.30

21.59

4-Span

Negative Wind Load

193.65

110.35

71.06

49.52

36.45

27.95

22.10

Live Load/Deflection

177.36

100.86

64.88

45.18

33.25

25.49

20.15

Notes:

  1. Strength calculations based on the 2012 AISI Standard “North American Specification for the Design of Cold-formed Steel Structural Members.”
  2. Allowable loads are applicable for uniform loading and spans without overhangs.
  3. Live load/deflection load capacities are for those loads that push the panel against its supports. The applicable limit states are flexure, shear, combined shear and flexure, web crippling at end and interior supports, and a deflection limit of L/60 under strength-level loads.
  4. Negative wind load capacities are for those loads that pull the panel away from its supports. The applicable limit states are flexure, shear, combined shear and flexure, and a deflection limit of L/60 under 10-year wind loading.
  5. Panel pullover and Screw pullout capacity must be checked separately using the screws employed for each particular application when utilizing this load chart.
  6. Effective yield strength has been determined in accordance with section A2.3.2 of the 2012 NAS specification.
  7. The use of any accessories other than those provided by the manufacturer may damage panels, void all warranties and will void all engineering data.
  8. This material is subject to change without notice. Please contact Metl-Span for most current data.

Section Properties

NEGATIVE BENDING

POSITIVE BENDING

Panel
Gauge

Fy
(KSI)

Weight
(PSF)

Ixe
(IN.4/FT.)

Sxe
(IN.3/FT.)

Maxo
(KIP-IN.)

Ixe
(IN.4/FT.)

Sxe
(IN.3/FT.)

Maxo
(KIP-IN.)

29

60*

0.75

0.0109

0.0242

0.9111

0.0151

0.0255

1.0913

26

60*

0.94

0.0160

0.0368

14.323

0.0233

0.0411

1.8067

24

50

1.14

0.0217

0.0526

1.5743

0.0316

0.0574

1.7175

22

50

1.44

0.0305

0.0703

2.1049

0.0422

0.0771

2.3097

Notes:

*Fy is 80-ksi reduced to 60-ksi in accordance with the 2012 edition of the North American Specification for Design of Cold-Formed Steel Structural Members –A2.3.2.

  1. All calculations for the properties of PBU Roof panels are calculated in accordance with the 2012 edition of the North American Specification For Design Of Cold-Formed Steel Structural Members.
  2. Ixe is for defelction determination.
  3. Sxe is for bending.
  4. Maxo is allowable bending moment.
  5. All values are for one foot of panel width.