PorterSIPs Structural Insulated Panels

ALLOWABLE TRANSVERSE LOAD

FOR SIMPLE SUPPORTED ROOF PANELS

Panel A is made of two equal layers of 7/16" APA rated (24/16) OSB.

Panel C is made of a layer of 7/16" OSB APA rated (24/16) and a layer of 19/32" plywood.

Each skin is rated (24/16). Each type has a core of 0.95 pcf minimum density EPS foam adhered to the sheathing with glue and set under pressure.

SANDWICH PANEL DIMENSIONS

Skin Thickness

Core Thickness

Panel Depth

7/16"

3 5/8"

4 1/2"

7/16"

5 5/8"

6 1/2"

7/16"

7 3/8"

8 1/4"

7/16"

9 3/8"

10 1/4"

7/16"

11 3/8"

12 1/4"

Panel span between supports

DEFL. LIMIT

ALLOWABLE TRANSVERSE LOAD

FOR SIMPLE SUPPORTED ROOF PANELS

(DEAD + LIVE) psf

7.5 ft

L/180

L/240

L/360

62 s

52 d

35 d

93 s

87 d

58 d

119 s

118 d

79 d

150 s

103 d

181 s

128 d

9.5 ft

L/180

L/240

L/360

46 d

34 d

23 d

73 s

60 d

40 d

94 s

83 d

56 d

118 s

111 d

74 d

143 s

140 d

93 d

11.5 ft

L/180

L/240

L/360

32 d

24 d

16 d

57 d

43 d

28 d

78 s

61 d

41 d

98 s

83 d

55 d

118 s

105 d

70 d

13.5 ft

L/180

L/240

L/360

22 d

17 d

11 d

42 d

31 d

21 d

61 d

46 d

30 d

83 s

63 d

42 d

100 s

81 d

54 d

15.5 ft

L/180

L/240

L/360

16 d

12 d

8 d

31 d

23 d

16 d

46 d

35 d

23 d

65 d

49 d

33 d

83 m

64 d

42 d

17.5 ft

L/180

L/240

L/360

12 d

9 d

6 d

24 d

18 d

12 d

36 d

27 d

18 d

51 d

38 d

26 d

65 m

51 d

34 d

19.5 ft

L/180

L/240

L/360

9 d

7 d

5 d

19 d

14 d

9 d

28 d

21 d

14 d

41 d

31 d

20 d

53 m

41 d

27 d

21.5 ft

L/180

L/240

L/360

7 d

5 d

4 d

15 d

11 d

7 d

23 d

17 d

12 d

33 d

25 d

16 d

43 m

33 d

22 d

23.5 ft

L/180

L/240

L/360

6 d

4 d

3 d

12 d

9 d

6 d

18 d

14 d

9 d

27 d

20 d

13 d

36 m

27 d

18 d

Notes:
1. Values shown in tables are the allowable dead load plus live load.
2. Controlling conditions: "s" shear, "m" moment, "d" deflection.
3. Minimum bearing required is 3 inches.
4. Deflection criteria is L/240 for roof loads.
5. All loads are normal duration loads. No duration factors are allowed.
6. For permanent or long-duration loads (>6 mos.) use 1/2 the tabulated load values to minimize creep deflection.

Table TR-1 Transverse Loads on Roof Sandwich Panels Updated 3/21/00

ALLOWABLE TRANSVERSE LOAD FOR

SIMPLE SUPPORTED ROOF PANELS WITH 4' CANTILEVER

Panel A is made of two equal layers of 7/16" APA rated (24/16) OSB.

Panel C is made of a layer of 7/16" OSB APA rated (24/16) and a layer of 19/32" plywood.

Each skin is rated (24/16). Each type has a core of 0.95 pcf minimum density EPS foam adhered to the sheathing with glue and set under pressure.

SANDWICH PANEL DIMENSIONS

Skin Thickness

Core Thickness

Panel Depth

7/16"

3 5/8"

4 1/2"

7/16"

5 5/8"

6 1/2"

7/16"

7 3/8"

8 1/4"

7/16"

9 3/8"

10 1/4"

7/16"

11 3/8"

12 1/4"

Panel span between supports

DEFL. LIMIT

ALLOWABLE TRANSVERSE LOAD FOR

SIMPLE SUPPORTED ROOF PANELS WITH 4' CANTILEVER

(DEAD + LIVE) psf

7.5 ft

L/180

L/240

L/360

48 s

72 s

93 s

117 s

141 s

9.5 ft

L/180

L/240

L/360

42 s

36 d

62 s

62 d

80 s

101 s

121 s

11.5 ft

L/180

L/240

L/360

36 s

32 d

21 d

54 s

38 d

69 s

54 d

87 s

73 d

105 s

93 d

13.5 ft

L/180

L/240

L/360

28 d

21 d

14 d

47 s

39 d

26 d

61 s

56 d

37 d

77 s

51 d

92 s

66 d

15.5 ft

L/180

L/240

L/360

19 d

14 d

10 d

37 d

28 d

18 d

54 s

41 d

27 d

68 s

57 s

38 d

82 s

74 s

49 d

17.5 ft

L/180

L/240

L/360

14 d

10 d

7 d

27 d

20 d

14 d

41 d

31 d

20 d

58 s

43 d

29 d

73 m

57 d

38 d

19.5 ft

L/180

L/240

L/360

10 d

8 d

5 d

21 d

15 d

10 d

31 d

23 d

16 d

45 d

34 d

23 d

57 m

45 d

30 d

21.5 ft

L/180

L/240

L/360

8 d

6 d

4 d

16 d

12 d

8 d

25 d

18 d

12 d

36 d

27 d

18 d

46 m

36 d

24 d

23.5 ft

L/180

L/240

L/360

6 d

5 d

3 d

13 d

10 d

6 d

20 d

15 d

10 d

29 d

22 d

14 d

38 m

29 d

20 d

Notes:
1. Values shown in tables are the allowable dead load plus live load.
2. Controlling conditions: "s" shear, "m" moment, "d" deflection.
3. Minimum bearing required is 3 inches.
4. Deflection criteria is L/240 for roof loads; L/360 for floor loads.
5. All loads are normal duration loads. No duration factors are allowed.
6. For permanent or long-duration loads (>6 mos.) use 1/2 the tabulated load values to minimize creep deflection.

Table TRC-1 Transverse Loads on Roof Sandwich Panels Updated 11/19/99

General Type "A" SIP Panel 38-001

Panel to Panel w/2x Lumber 38-102

Panel to Panel Corner 38-103

Panel to Panel Floor Joist 38-104

Panel to Panel w/Insul Spline 38-106

Panel on Slab 38-201

Bearing Wall to Joist Multi-Story 38-203

Panel on Sub Floor 38-204

Roof to Wall Beveled Seat 38-301

Roof to Wall Canted Plate 38-302

Roof Ridge w/Solid Blocking 38-303

Cantilever Roof Ridge w/Solid Blocking 38-304

Roof Ridge Connection w/EPS insert 38-306

Roof Eave on Pitched Roof 38-307

Roof to Wall on Gable Roof 38-308

Framed Roof Eave 38-309

Roof Valley Connection 38-310

Roof to Wall 38-311

Roof Ridge w/o Solid Blocking 38-312

Single Plate Insulated Headers 38-501

Double Plate Insulated Headers 38-502

Reinforcement of Field-Cut Wall Openings 38-503

Framed Roof Penetration 38-504

Unframed Roof Penetration 38-505

PorterSIPs by PorterCorp 4240 N. 136th Ave. Holland, MI 49424 800.354.7721