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.

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Load Table

SectionWeightTotal Cross-Sectional
Area
A (in2)
Allowable Stress
Fa (psi)
Top Flat in CompressionBottom 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 1Applied Load (PSF)
Allowable Spans102030405060
SectionSpan LimitSpan TypeAllowable Spans (ft)
18 GaL/601 Span8′-6″7′-0″6′-2″5′-8″5′-1″ *4′-8″ *
2 Span9′-7″7′-10″6′-7″ *5′-9″ *5′-2″ *4′-9″ *
3 Span9′-4″7′-8″6′-9″5′-11″ *5′-4″ *4′-11″ *
L/2401 Span5′-4″4′-5″3′-11″3′-7″3′-4″3′-1″
2 Span6′-0″4′-11″4′-4″4′-0″3′-9″3′-6″
3 Span5′-10″4′-10″4′-3″3′-11″3′-7″3′-5″
20 GaL/601 Span8′-0″6′-6″5′-9″5′-2″ *4′-7″ *4′-3″ *
2 Span9′-0″7′-2″ *6′-0″ *5′-2″ *4′-8″ *4′-3″ *
3 Span8′-9″7′-2″6′-2″ *5′-5″ *4′-10″ *4′-5″ *
L/2401 Span5′-0″4′-1″3′-7″3′-4″3′-1″2′-11″
2 Span5′-8″4′-7″4′-1″3′-9″3′-5″3′-3″
3 Span5′-6″4′-6″4′-0″3′-7″3′-4″3′-2″
22 GaL/601 Span7′-5″6′-0″5′-3″ *4′-7″ *4′-1″ *3′-9″ *
2 Span8′-4″6′-5″ *5′-4″ *4′-8″ *4′-2″ *3′-10″ *
3 Span8′-2″6′-7″5′-6″ *4′-10″ *4′-4″ *3′-11″ *
L/2401 Span4′-8″3′-10″3′-4″3′-1″2′-10″2′-8″
2 Span5′-3″4′-3″3′-9″3′-5″3′-2″3′-0″
3 Span5′-1″4′-2″3′-8″3′-4″3′-1″2′-11″
24 GaL/601 Span7′-2″5′-9″4′-11″ *4′-4″ *3′-10″ *3′-6″ *
2 Span8′-0″6′-1″ *5′-0″ *4′-4″ *3′-11″ *3′-7″ *
3 Span7′-10″6′-3″ *5′-2″ *4′-6″ *4′-1″ *3′-8″ *
L/2401 Span4′-6″3′-8″3′-2″2′-11″2′-8″2′-7″
2 Span5′-0″4′-1″3′-7″3′-3″3′-0″2′-10″
3 Span4′-11″4′-0″3′-6″3′-2″3′-0″2′-10″
26 GaL/601 Span4′-10″ *2′-10″ *2′-4″ *2′-1″ *1′-10″ *1′-8″ *
2 Span4′-10″ *2′-10″ *2′-4″ *2′-1″ *1′-10″ *1′-8″ *
3 Span4′-1″ *3′-0″ *2′-5″ *2′-1″ *1′-11″ *1′-9″ *
L/2401 Span3′-0″2′-5″2′-1″1′-11″1′-9″1′-8″
2 Span3′-4″2′-8″2′-4″2′-1″ *1′-10″ *1′-8″ *
3 Span3′-3″2′-7″2′-4″2′-1″1′-11″1′-9″ *
0.02 AlumL/601 Span4′-8″3′-5″ *2′-9″ *2′-5″ *2′-2″ *2′-0″ *
2 Span4′-10″ *3′-5″ *2′-10″ *2′-5″ *2′-2″ *2′-0″ *
3 Span5′-0″ *3′-7″ *2′-11″ *2′-6″ *2′-3″ *2′-1″ *
L/2401 Span2′-11″2′-4″2′-1″1′-10″1′-9″1′-8″
2 Span3′-4″2′-8″2′-4″2′-1″1′-11″1′-10″
3 Span3′-3″2′-7″2′-3″2′-1″1′-11″1′-9″
0.024 AlumL/601 Span4′-11″3′-9″ *3′-1″ *2′-8″ *2′-5″ *2′-2″ *
2 Span5′-4″ *3′-10″ *3′-2″ *2′-9″ *2′-5″ *2′-3″ *
3 Span5′-5″3′-11″ *3′-3″ *2′-10″ *2′-6″ *2′-4″ *
L/2401 Span3′-1″2′-6″2′-2″2′-0″1′-10″1′-9″
2 Span3′-6″2′-10″2′-5″2′-3″2′-1″1′-11″
3 Span3′-5″2′-9″2′-5″2′-2″2′-0″1′-11″
0.032 AlumL/601 Span5′-5″4′-4″ *3′-7″ *3′-1″ *2′-9″ *2′-6″ *
2 Span6′-1″4′-5″ *3′-7″ *3′-1″ *2′-10″ *2′-7″ *
3 Span5′-11″4′-6″ *3′-9″ *3′-3″ *2′-11″ *2′-8″ *
L/2401 Span3′-5″2′-9″2′-5″2′-2″2′-0″1′-11″
2 Span3′-10″3′-1″2′-8″2′-5″2′-3″2′-2″
3 Span3′-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 GaL/601 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/2401 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 GaL/601 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/2401 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 GaL/601 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/2401 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 GaL/601 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/2401 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 GaL/601 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/2401 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 AlumL/601 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/2401 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 AlumL/601 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/2401 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 AlumL/601 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/2401 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.