Corrugated Metals Products: Cor-Rib Roofing and Siding Panels

Our Cor-Rib roofing and siding panels are typically used for roofing, siding, custom trailers, railcars and other architectural applications.

To view more details about our cor-rib roofing and siding roofing and siding, please select one of the links below. Or you can contact a Corrugated Metals representative at 1-800-621-5617.

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Load Table

Section Weight Total Cross-Sectional
Area
A (in2)
Allowable Stress
Fa (psi)
Top Flat in Compression Bottom Flat in Compression
Sheet
lb/ft
Area
lb/sf
Moment of Inertia
I (in4/ft)
Section Modulus
S (in3/ft)
Allowable Momen
Ma (lb-ft/ft)
Moment of Inertia
I (in4/ft)
Section Modulus
S (in3/ft)
Allowable Moment
Ma (lb-ft/ft)

18 Ga

7.81

2.31

2.30

19760

0.029

0.103

170

0.029

0.105

174

20 Ga

6.25

1.85

1.84

19760

0.023

0.084

138

0.023

0.086

142

22 Ga

4.84

1.44

1.42

19760

0.018

0.066

108

0.018

0.068

112

24 Ga

4.22

1.25

1.24

19760

0.016

0.058

95

0.016

0.060

98

26 Ga

3.44

1.02

1.01

19760

0.013

0.047

78

0.013

0.049

81

0.02 Alum

1.09

0.32

0.92

8069

0.012

0.043

30

0.012

0.045

30

0.024 Alum

1.30

0.39

1.10

8403

0.014

0.051

37

0.014

0.053

37

0.032 Alum

1.74

0.52

1.47

8500

0.019

0.068

49

0.019

0.070

49

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Table 1: Applied Load (PSF)

An asterisk (*) indicates allowable stress has been reached.

Table 1 Applied Load (PSF)
Allowable Spans 10 20 30 40 50 60
Section Span Limit Span Type Allowable Spans (ft)
18 Ga L/60 1 Span 8′-6″ 7′-0″ 6′-2″ 5′-8″ 5′-1″ * 4′-8″ *
2 Span 9′-7″ 7′-10″ 6′-7″ * 5′-9″ * 5′-2″ * 4′-9″ *
3 Span 9′-4″ 7′-8″ 6′-9″ 5′-11″ * 5′-4″ * 4′-11″ *
L/240 1 Span 5′-4″ 4′-5″ 3′-11″ 3′-7″ 3′-4″ 3′-1″
2 Span 6′-0″ 4′-11″ 4′-4″ 4′-0″ 3′-9″ 3′-6″
3 Span 5′-10″ 4′-10″ 4′-3″ 3′-11″ 3′-7″ 3′-5″
20 Ga L/60 1 Span 8′-0″ 6′-6″ 5′-9″ 5′-2″ * 4′-7″ * 4′-3″ *
2 Span 9′-0″ 7′-2″ * 6′-0″ * 5′-2″ * 4′-8″ * 4′-3″ *
3 Span 8′-9″ 7′-2″ 6′-2″ * 5′-5″ * 4′-10″ * 4′-5″ *
L/240 1 Span 5′-0″ 4′-1″ 3′-7″ 3′-4″ 3′-1″ 2′-11″
2 Span 5′-8″ 4′-7″ 4′-1″ 3′-9″ 3′-5″ 3′-3″
3 Span 5′-6″ 4′-6″ 4′-0″ 3′-7″ 3′-4″ 3′-2″
22 Ga L/60 1 Span 7′-5″ 6′-0″ 5′-3″ * 4′-7″ * 4′-1″ * 3′-9″ *
2 Span 8′-4″ 6′-5″ * 5′-4″ * 4′-8″ * 4′-2″ * 3′-10″ *
3 Span 8′-2″ 6′-7″ 5′-6″ * 4′-10″ * 4′-4″ * 3′-11″ *
L/240 1 Span 4′-8″ 3′-10″ 3′-4″ 3′-1″ 2′-10″ 2′-8″
2 Span 5′-3″ 4′-3″ 3′-9″ 3′-5″ 3′-2″ 3′-0″
3 Span 5′-1″ 4′-2″ 3′-8″ 3′-4″ 3′-1″ 2′-11″
24 Ga L/60 1 Span 7′-2″ 5′-9″ 4′-11″ * 4′-4″ * 3′-10″ * 3′-6″ *
2 Span 8′-0″ 6′-1″ * 5′-0″ * 4′-4″ * 3′-11″ * 3′-7″ *
3 Span 7′-10″ 6′-3″ * 5′-2″ * 4′-6″ * 4′-1″ * 3′-8″ *
L/240 1 Span 4′-6″ 3′-8″ 3′-2″ 2′-11″ 2′-8″ 2′-7″
2 Span 5′-0″ 4′-1″ 3′-7″ 3′-3″ 3′-0″ 2′-10″
3 Span 4′-11″ 4′-0″ 3′-6″ 3′-2″ 3′-0″ 2′-10″
26 Ga L/60 1 Span 4′-10″ * 2′-10″ * 2′-4″ * 2′-1″ * 1′-10″ * 1′-8″ *
2 Span 4′-10″ * 2′-10″ * 2′-4″ * 2′-1″ * 1′-10″ * 1′-8″ *
3 Span 4′-1″ * 3′-0″ * 2′-5″ * 2′-1″ * 1′-11″ * 1′-9″ *
L/240 1 Span 3′-0″ 2′-5″ 2′-1″ 1′-11″ 1′-9″ 1′-8″
2 Span 3′-4″ 2′-8″ 2′-4″ 2′-1″ * 1′-10″ * 1′-8″ *
3 Span 3′-3″ 2′-7″ 2′-4″ 2′-1″ 1′-11″ 1′-9″ *
0.02 Alum L/60 1 Span 4′-8″ 3′-5″ * 2′-9″ * 2′-5″ * 2′-2″ * 2′-0″ *
2 Span 4′-10″ * 3′-5″ * 2′-10″ * 2′-5″ * 2′-2″ * 2′-0″ *
3 Span 5′-0″ * 3′-7″ * 2′-11″ * 2′-6″ * 2′-3″ * 2′-1″ *
L/240 1 Span 2′-11″ 2′-4″ 2′-1″ 1′-10″ 1′-9″ 1′-8″
2 Span 3′-4″ 2′-8″ 2′-4″ 2′-1″ 1′-11″ 1′-10″
3 Span 3′-3″ 2′-7″ 2′-3″ 2′-1″ 1′-11″ 1′-9″
0.024 Alum L/60 1 Span 4′-11″ 3′-9″ * 3′-1″ * 2′-8″ * 2′-5″ * 2′-2″ *
2 Span 5′-4″ * 3′-10″ * 3′-2″ * 2′-9″ * 2′-5″ * 2′-3″ *
3 Span 5′-5″ 3′-11″ * 3′-3″ * 2′-10″ * 2′-6″ * 2′-4″ *
L/240 1 Span 3′-1″ 2′-6″ 2′-2″ 2′-0″ 1′-10″ 1′-9″
2 Span 3′-6″ 2′-10″ 2′-5″ 2′-3″ 2′-1″ 1′-11″
3 Span 3′-5″ 2′-9″ 2′-5″ 2′-2″ 2′-0″ 1′-11″
0.032 Alum L/60 1 Span 5′-5″ 4′-4″ * 3′-7″ * 3′-1″ * 2′-9″ * 2′-6″ *
2 Span 6′-1″ 4′-5″ * 3′-7″ * 3′-1″ * 2′-10″ * 2′-7″ *
3 Span 5′-11″ 4′-6″ * 3′-9″ * 3′-3″ * 2′-11″ * 2′-8″ *
L/240 1 Span 3′-5″ 2′-9″ 2′-5″ 2′-2″ 2′-0″ 1′-11″
2 Span 3′-10″ 3′-1″ 2′-8″ 2′-5″ 2′-3″ 2′-2″
3 Span 3′-9″ 3′-0″ 2′-8″ 2′-5″ 2′-3″ 2′-1″

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Table 2: Trial Span (ft)

An asterisk (*) indicates allowable stress has been reached.

A strikethrough (100) indicates less than 10 small psf ASCE minimum.

Table 2

Trial Span (ft)

Allowable Loads

3

4

5

6

7

8

9

10

11

12

Section

Span Limit

Span Type

Allowable Loads (PSF)

18 Ga L/60 1 Span

148 *

82 *

52 *

32

19

12

8

5

3

2

2 Span

152 *

84 *

53 *

36 *

26 *

18

12

8

5

3

3 Span

162 *

90 *

57 *

38 *

26

17

11

7

5

3

L/240 1 Span

67

27

12

6

3

1

0

1

1

2

2 Span

96

39

19

10

5

2

1

0

1

1

3 Span

89

36

17

9

4

2

1

0

1

1

20 Ga L/60 1 Span

120 *

67 *

42 *

26

15

9

6

4

2

1

2 Span

124 *

68 *

43 *

29 *

21 *

14

9

6

4

3

3 Span

132 *

73 *

46 *

31 *

21

13

9

6

4

2

L/240 1 Span

54

21

10

5

2

1

0

1

1

1

2 Span

77

31

15

8

4

2

1

0

1

1

3 Span

71

29

14

7

3

2

0

0

1

1

22 Ga L/60 1 Span

94 *

52 *

33 *

20

12

7

4

3

2

1

2 Span

97 *

54 *

34 *

23 *

16 *

11

7

5

3

2

3 Span

104 *

58 *

36 *

25 *

16

10

6

4

3

2

L/240 1 Span

41

16

7

3

1

0

0

1

1

1

2 Span

59

24

11

6

3

1

0

0

1

1

3 Span

55

22

10

5

3

1

0

0

1

1

24 Ga L/60 1 Span

83 *

46 *

29 *

17

10

6

4

2

1

1

2 Span

85 *

47 *

30 *

20 *

14 *

9

6

4

3

2

3 Span

91 *

51 *

32 *

22 *

14

9

6

4

2

1

L/240 1 Span

36

14

6

3

1

0

0

1

1

1

2 Span

52

21

10

5

2

1

0

0

1

1

3 Span

48

19

9

4

2

1

0

0

1

1

0.26 Ga L/60 1 Span

18 *

9 *

5 *

3 *

2

1

0

0

1

1

2 Span

18 *

9 *

5 *

3 *

2 *

1 *

1 *

0

0

1

3 Span

19 *

10 *

6 *

4 *

2 *

1 *

1

0

0

1

L/240 1 Span

9

3

1

0

1

1

1

1

1

1

2 Span

14

5

2

0

0

1

1

1

1

1

3 Span

13

4

2

0

0

1

1

1

1

1

0.02 Alum L/60 1 Span

25 *

14 *

8

4

2

1

1

0

0

0

2 Span

26 *

14 *

9 *

6 *

4

2

1

1

0

0

3 Span

28 *

15 *

9 *

6

3

2

1

1

0

0

L/240 1 Span

9

3

1

0

0

0

0

1

1

1

2 Span

13

5

2

1

0

0

0

0

1

1

3 Span

12

5

2

1

0

0

0

0

1

1

0.024 Alum L/60 1 Span

31 *

17 *

9

5

3

2

1

0

0

0

2 Span

32 *

18 *

11 *

7

4

3

2

1

0

0

3 Span

34 *

19 *

12 *

7

4

2

1

1

0

0

L/240 1 Span

11

4

2

1

0

0

0

1

1

1

2 Span

16

6

3

1

0

0

0

0

1

1

3 Span

14

6

2

1

0

0

0

0

1

1

0.032 Alum L/60 1 Span

42 *

23 *

12

7

4

2

1

1

0

0

2 Span

43 *

24 *

15 *

10 *

6

4

2

1

1

0

3 Span

46 *

25 *

16 *

9

5

3

2

1

1

0

L/240 1 Span

15

6

2

1

0

0

0

1

1

1

2 Span

21

8

4

2

1

0

0

0

1

1

3 Span

19

8

3

2

1

0

0

0

1

1

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Notes

  1. An asterisk (*) indicates allowable stress has been reached.
  2. A strikethrough (100) indicates less than 10 small psf ASCE minimum.
  3. For structural roofing & siding made of formed metal sheets, a total load deflection shall not exceed L/60.
  4. Refer to Table 1604.3 limits and footnotes of the International Building Code (IBC) for additional guidance.
  5. Allowable spans and loads DO include self-weight of panel.
  6. All values are for one foot of panel width unless noted otherwise.

Notes – Steel

  1. Yield stress = Fy = 33,000 psi.
  2. Loads and spans for carbon steel are based on AISI Standard for Design of Cold-Formed Steel Structure Members (2007 Edition).

Notes – Aluminum

  1. Yield stress = Fcy = 13,000 psi.
  2. Loads and spans for aluminum are based on Aluminum Design Manual (January 2005).

Corrugated Metals, Inc. is a leading manufacturer of a wide range of roofing, siding and architectural panels. Our advanced technology roll forming equipment can produce panels with up to 48″ coverage, in all types of metals, standard and special finishes. From large industrial and institutional facilities to commercial projects, our customers count on CMI to deliver on time, on-spec.

Call us today at 1-800-621-5617, fill out our contact form
or email us at info@corrugated-metals.com.