Thermasteel IAPMO Report

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EVALUATION REPORT NUMBER: 128
Originally Issued: 05/06/2010  Revised: 05/31/2016  Valid Through: 05/31/2017

EVALUATION SUBJECT:  TONGUE & GROOVE (T-G) & SHIPLAP (S-L) PANELS

REPORT HOLDER:
ThermaSteel Inc.
609 West Rock Road
Radford, Virginia 24141

CSI Division: 07-THERMAL AND MOISTURE PROTECTION

CSI Section: 07410 - Metal Roof and Wall Panels

 

1.0 SCOPE OF EVALUATION

1.1 Compliance to the following codes & regulations:

  • 2012, 2009 & 2006 International Building Code (IBC)
  • 21012, 2009, & 2006 International Residential Code (IRC)

1.2 Evaluated in Accordance with:

  • 2007 & 2001 North American Specification for the Design of Cold-Formed Steel Structural Members (AISI)
  • ASCE 7-2005 & 7-2010 Minimum Design Loads for Buildings and Other Structures

1.3 Properties assessed:

  • Structural

 

2.0 PRODUCT USE

The Tongue and Groove (T-G) and Ship-Lap (S-L) panels are insulated structural composites that are used to construct walls, floors and roofs in Type V construction.  Walls may be either load bearing or non-load bearing. This panelized system is available for both residential and commercial application.  Rack and shear values, which are outside the scope of this report, can be obtained through the normal bracing used in construction.  The panels comply with IBC Section K107 as prefabricated construction.  The panels are permitted where an engineering design is submitted in accordance with Section R301.1.3 of the IRC.

 

3.0 PRODUCT DESCRIPTION

3.1 Product Information:  T-G and S-L panels are manufactured with expanded polystyrene foam plastic insulation and light gauge galvanized steel to create an insulated lightweight structural composite panel.  The light gauge steel members (stiffeners) support loads and are flush with each face of the panel.  The light gauge steel load bearing stiffeners are separated and bonded to the Expanded Polystyrene (EPS) insulation that provides a thermal break between faces. Panels are manufactured by applying a thermosetting adhesive coating to the steel and then subjecting the framing members to low-pressure molding.

3.1.1 Framing:  The framing members (stiffeners) are light gauge galvanized steel embedded in both faces of the panel.  Stiffeners are spaced at 16 inches (406 mm) or 24 inches ( 610 mm) on center.  The light gauge material is roll formed from Nos. 24, 20, 18 or 16 gauge steel sheets bent to shape for use in the panel, as shown in Figure 1 of this report.

3.1.2 Tracks:  Panel ends are supplied with Nos. 18, 20 or 24 gauge galvanized or galvalume coated steel tracks.

3.1.3 Upper Header:  In wall panels, the upper header is metal or wood with a minimum nominal height of 2 inches (net 1 ½ inch (38 mm)).  Nominal timber header dimensions in inches are 2 x 4, 2 x 6 and 2 x 8.  Header width shall match the EPS core thickness.

3.1.4 Panel:  The standard manufactured panel is 48 inches (1219 mm) wide.  Standard panel lengths are 8 feet (2438 mm), 9 feet (2743 mm), 10 feet (3048 mm), or 12 feet (3658 mm).  In addition, custom widths and lengths can be formed.  Standard panel thickness are 3 ½ inches (89 mm), 5 ½ inches (140 mm) and 7 ½ inches (190 mm), as illustrated in Figures 1 and 2 of this report.  The T-G fastening system provides for an opening for a wire chase between panels.  The type of panel, T-G or S-L, available for a given project is a function of the equipment in the plant where the panels will be manufactured.

3.1.5 Connector/Shear Plate:  Connector.shear plates are light gauge steel with a minimum thickness of No. 20 gauge, as shown in Table 2 of this report.  The plate area shall be no smaller than 3-inch-by-5-inch (76 mm-by-127mm).

3.1.6 Self-tapping Screws:  The screws shall be No. 8 by ½-inch-long (12.7 mm), self-tapping, and produced from steel complying with AISI 1018 or equivalent.  Steel hardness shall the Rockwell C44 minimum hardness value.

3.2.1 Expanded Polystyrene (EPS):  EPS panels shall be manufactured in accordance with ASTM C578.  The flame-spread index and smoke density index shall be less than 25 and 450, respectively, at a nominal density of 1.3 pounds per cubic foot (20.8 grams/liter).  EPS panel density varies with thickness, See Table 1.

 

Table 1  EPS Panel Density

 

Thickness

Density

Minimum

Maximum

Inches

(mm)

pcta

(g/l)b

pcf

(g/l)

3.5

89

1.25

20.0

1.55

24.8

5.5

140

0.9

14.4

1.3

20.8

7.5

190

0.9

14.4

1.3

20.8

apounds per cubic foot

bgrams per liter

 

3.2.2 Panel Steel: All steel members shall be manufactured in accordance with ASTM A653 SS, Grade 37, and coated with ASTM A924 G60 galvanizing/galvalume. In this evaluation report steel thickness refers to the minimum uncoated base-metal thickness. The design thickness is based on AISI uncoated values, as noted in Table 2 of this report.

 

Table 2 Light Gauge Metal Coil Thickness (inches)

 

Uncoated

Coated (Galvanized)

Gauge

Minimum

Nominal

AISI Design

Abs Min

Nominal

24

0.0209

0.0239

0.0220

0.0236

0.0276

22

0.0269

0.0299

0.0283

0.0296

0.0336

20

0.0329

0.0359

0.0346

0.0356

0.0396

18

0.0428

0.0478

0.0451

0.0466

0.0516

16

0.0538

0.0598

0.0566

0.0575

0.0635

 

3.2.3 Thermosetting Adhesive:  A Thermosetting neoprene/phenol adhesive is applied to steel stiffeners and tracks prior to molding the panel.

 

4.0 DESIGN AND INSTALLATION

4.1 Design

4.1.1 Design Loads:  Design loads shall be determined in accordance with applicable code and manufacturer’s design manual. Design may be based on Allowable Stress Design (ASD) or Load Resistance Factor Design (LRFD).  Both allowable design load and the load causing failure are provided in load Tables 3 through 9 of this report.  These two types of loadings are consistent with the IBC and are provided to give the designer a choice.

4.1.1.1 Wall Bearing Loads:  Axial compressive Loads may act on a wall panel as a point load (lbs), or distributed load (lbs/ft). Table 3 of this report shows allowable (ASD) or capacity (LRFD) of a point load acting on two stiffeners or stud (one of each face) of a panel.  If a point load is between stiffeners, the top plate shall be sized for the location of the load on the plate.

4.1.1.2 Transverse Loads:  Panels may be used to support floor or roof loads.  Tables 4 through 9 of this report provide uniform distributed transverse allowable (ASD) and failure (LRFD) loads.  Single span deflections for service live loads is also given.

4.1.1.3 Load Interaction:  If loading conditions result in a simultaneously applied axial and transverse load, the Equations EQ-1 or EQ-2 shall be used:

 

 

 

 

 

 

The axial compressive loads may be either distributed or a point load; p is an axial load and w is a transverse load.  The subscript “a” is allowable, “n” is nominal and “u” is factored.

4.1.2.Limitations of the Load Tables:  Tabulated loads listed in the load tables may be used for shorter spans or shorter heights. Extrapolation of panel lengths is outside the scope of this report.

4.1.3 Scope:  Other supporting elements typically used to brace against design loads such as, siding, wood structural sheathing (OSB or Plywood), and gypsum board are outside the scope of this report.

4.2 Installation: All panels (T-G or S-L) shall be installed in accordance with the items listed in this report, the manufacturer’s installation instructions, and IBC Section 2603.

4.2.1 Panel to Panel Connection:  Both T-G and S-L Panels shall be connected to each other by shear plate connectors.  Each panel has a steel channel that runs full length along the edges of the outside and inside facings. The facings butt to the edge of the next panel.  A minimum of four equally spaced connector/shear steel plates (maximum spacing of 2 feet-6 inches (762 mm)) shall be attached with three self-tapping screws to each framing member in accordance with Figure 2 of this report.  The connector/shear plate shall be applied on both faces of the panels.

4.2.2 Corners: Corners are joined in accordance with the details shown in Figure 3 of this report.

4.2.3 Exterior and Interior Wall Panels:  Each exterior and interior wall panel shall be attached to top and bottom tracks with self-tapping screws.  Three self-tapping screws shall be provided at inside and outside faces where track and stud (stiffener) intersect.  If required, a second top track or wood top plate may be installed.

4.2.4 Roof and Floor Panels:  Each roof and floor panel shall have an in-plane boundary element field-installed across the width of the top of bottom of the panel similar to the top and bottom tracks of exterior and interior wall panels.

4.2.5 Cladding Attachment

4.2.5.1 Exterior Walls:  Exterior wall panels shall be protected with a water-riesistive barrier in accordance with IBC Chapter 14. Exterior wall panels shall be protected with a code complying exterior wall covering.  The exterior wall coverings shall be installed in accordance with applicable codes and the manufacturer’s recommendations.  Thermal barriers are required in accordance with Section 5.4 of this report.

4.2.5.2 Interior Walls:  The interior wall panels shall be covered with an approved interior wall covering.  Installation methods shall be approved by the Building Official and in accordance with the IBC or IRC. Thermal barriers are required in accordance with Section 5.4 of this report.

4.2.5.3 Roof:  The roof covering, flashing, and underlayment, shall be installed in acordance with IBC Chapter 15 and approved by the Building Official.  Thermal barriers are required in accordance with Section 5.6 of this report.  Minimum roof slope shall be in accordance with IBC Chapter 15 or IRC Chapter 9.  The roof shall provide for proper drainage.

4.2.5.4 Floor:  Floor panels shall be covered with an approved floor covering.  Installation methods shall be in accordance with the current IBC.  Thermal barriers are required in accordance with Section 5.4 of this report.

 

5.0 Limitations

The Tongue & Groove (T-G) and Ship Lap (S-L) Panels described in this report complies with, or is a suitable alternate to what is specified in, those codes listed Section 1.0 of this report, subject to the following conditions:

5.1 Standards:  Both T-G and S-L “Manufactured Panel Building Systems” shall be identified and installed in accordance with this report, the manufacturer's instructions, the IBC or IRC, AISI S100 and ASCE 7. Where conflicts occur, the more restrictive shall govern.

5.2 Permits:  Structural calculations shall be performed and submitted to the code official for approval to size panels to carry the applied loads.  Calculations shall also be performed to resist in-plane shear, panel connections, top and bottom plate connections, upper header size, lintel types and sizes for opening, anchors between walls and floor, and supporting structure.  The plans, specification, structural calculations and other construction documents shall be prepared by a registered design professional when required by the statutes of the jurisdiction where the panels are used.

5.3 Panel Usage:  T-G and S-L Panels are recognized for use in Type V construction.

5.4 Thermal Barrier Interior Separation:  Except as provided for in IBC Section 2603.4.1 and 21012 IBC Section 2603.10, 2009 and 2006 IBC Section 2603.9 and IRC Sections R316.5 and R316.6, S-L and T-G Panels shall be separated from the interior of a building by a thermal barrier of minimum ½ inch (12.7 mm) thick gypsum wallboard or other approved material in accordance with IBC 2603.4. Thermal barrier exceptions in 2012 IBC Sections 2603.4.1.1 through 2603.4.1.14, 2009 or 2006 IBC Sections 2603.4.1 through 2603.13 and IRC Sections R316.5 and R316.6, do not apply to foam plastic insulation used as an interior wall or ceiling finish in plenums.

5.5 Roofing:  Roof covering, flashing and underlayment shall in accordance with IBC Chapter 15 or Chapter 9 and approved by the code official. The use with hot-asphalt or hot-coal roof coverings are outside the scope of this report.

5.6 Vapor Barrier:  Both T-G and S-L Panels are manufactured with an expanded polystyrene core (EPS). The EPS core has a permeability rating sufficient to not require a vapor barrier.

5.7 Termites:  In areas where the probability of termite infestation is very heavy in accordance with 2012 IBC Figure 2603.9, 2009 and 2006 IBC Figure 2603.8, and IRC Figure R301.2(6) installation is limited in accordance with 2012 IBC Section 2603.9, 2009 and 2006 IBC Section 2603.8.

5.8 Field Cuts:  Field-cutting of the panel, and panel alteration, are outside the scope of this report.

5.9 Fabrication: T-G and S-L Panels are fabricated at ThermaSteel Inc. facilities under a quality control program that meets the minimum requirements for IAPMO UES Listee’s Quality Assurance System.

5.10 Foam plastic: Foam plastic insulation used in the panels shall be listed in a product evaluation report showing compliance with requirements of IBC Chapter 26 from an approved and accredited certification agency or other nationally recognized certification program accepted by IAPMO Uniform Evaluation Services.

 

6.0 SUBSTANTIATING DATA

6.1 Test Reports:  Test results are from laboratories in compliance with ISO/IEC 17025. Test data was in accordance with the Standard Test Methods of Conducting Strength Tests of Panels for Building Construction, ASTM E72.

6.2 Panel Selection:  Load tables in this report were developed based on calculations to resist yielding, local buckling, and lateral buckling in accordance with the 2001-2007 North American Specification for the Design of Cold-Formed Steel Structural Members (AISI), 2006, 2009 and 2012 International Building Code (IBC), 2006, 2009 and 2012 International Residential Code, ASCE 7-05 and ASCE 7-10 and verified with ASTM E72 test data.

7.0 IDENTIFICATION
The T-G and S-L Panels are identified by a label that notes the manufacturer’s name, product name, and IAPMO EUS’s Mark of Conformity and the Uniform Evaluation Report number (ER-128).

 

Table 3.  Concentrated Axial Design Load per 2 Stiffeners (one on each face)

 

Strength, LRFD (Φ Pn)

Allowable, ASD (Pa)

3.5”

5.5”

7.5”

3.5”

5.5”

7.5”

Length(f)

gauge

(lbs)

(lbs)

(lbs)

(lbs)

(lbs)

(lbs)

8

24

2,455

2,821

3,660

1,535

1,763

2,287

9

d.o.

2,455

2,821

3,660

1,535

1,763

2,287

10

d.o.

2,455

2,821

3,660

1,535

1,763

2,287

12

d.o.

2,455

2,821

3,660

1,535

1,763

2,287

8

20

4,612

6,023

7,498

2,882

3,765

4,686

9

d.o.

4,612

6,023

7,498

2,882

3,765

4,686

10

d.o.

4,612

6,023

7,498

2,882

3,765

4,686

12

d.o.

4,612

6,023

7,498

2,882

3,765

4,686

8

18

9,729

12,195

12,621

6,081

7,622

7,888

9

d.o.

9,729

11,964

12,494

6,081

7,477

7,809

10

d.o.

9,729

11,710

12,354

6,081

7,319

7,721

12

d.o.

8.576

11,142

12,036

5,360

6,964

7,523

8

16

13,568

15,229

15,763

8,480

9,518

9,852

9

d.o.

12,907

14.939

15,605

8,067

9,337

9,753

10

d.o.

12,207

14,621

15,429

7,629

9,138

9,643

12

d.o.

10,727

13,910

15,031

6,704

8,694

9,395

 

 

Table 4.  3.5” Thick Panel; Stiffeners (350T75-Mils) at 16” o.c.; no gypsum or siding

 

Axial Distributed loads (plf)a

1 pcf (EPS): Transverse Loads (psf)b

Strength

Service

Strength

Service loads

Gauge

L(ft)

LRFD (Φ pn)

ASD (pa)

LRFD (Φ Wn)

ASD (Wa)

L/180

L/240

L/360

24

8

2,432

1,520

56

35

47

35

24

24

9

2,432

1,520

45

28

45

34

23

24

10

2,432

1,520

36

23

34

25

17

24

12

2,432

1,520

25

16

20

15

10

20

8

4,612

2,882

56

35

89

67

44

20

9

4,612

2,882

50

31

66

49

33

20

10

4,612

2,882

45

28

50

37

25

20

12

4,612

2,882

36

22

30

23

15

18

8

9,729

6,081

56

35

107

80

54

18

9

9,729

6,081

50

31

80

49

33

18

10

9,729

6,081

45

28

61

46

30

18

12

8,630

5,394

37

23

37

28

19

16

8

13,568

8,480

56

35

125

93

62

16

9

12,907

8,067

50

31

94

70

47

16

10

12,907

7,629

45

28

72

54

36

16

12

10,727

6,704

37

23

45

34

22

 

 

Table 5.  3.5” Thick Panel; Stiffeners (350T75-Mils) at 24” o.c.; no gypsum or siding

 

Axial Distributed loads (plf)a

1 pcf (EPS): Transverse Loads (psf)b

Strength

Service

Strength

Service loads

Gauge

Ht(ft)

LRFD (Φ pn)

ASD (pa)

LRFD (Φ Wn)

ASD (Wa)

L/180

L/240

L/360

24

8

1,841

1,151

43

27

44

33

22

24

9

1,841

1,151

34

21

31

24

16

24

10

1,841

1,151

27

17

23

17

12

24

12

1,841

1,151

19

12

14

10

7

20

8

3,459

2,162

56

35

64

48

32

20

9

3,459

2,162

48

30

47

35

23

20

10

3,459

2,162

39

24

35

26

17

20

12

3,459

2,162

27

17

21

16

10

18

8

7,297

4,560

56

35

79

59

39

18

9

7,297

4,560

50

31

58

35

23

18

10

7,297

4,560

45

28

43

33

22

18

12

6,472

4,045

35

22

26

20

13

16

8

10,176

6,360

57

35

93

70

46

16

9

9,680

6,050

50

31

69

51

34

16

10

9,155

5,722

45

28

52

39

26

16

12

8,045

5,028

37

23

32

24

16

Loadings comply with 2001 and 2007 AISI S100; IBC 2006, IBC 2009 and IBC 2012; and IRC 2006, 2009 and 2012.
LFRD: Capacity factor,  Φ = 0.8 (axial & flexure);  Φ = 0.5 (shear); ASD: Factor of safety = 2.0
(a) Values account for yielding, local buckling and lateral buckling.
(b) Values account for yielding, local buckling and lateral torsional buckling.

 

Table 6.  5.5” Thick Panel; Stiffeners (350T75-Mils) at 16” o.c.; no gypsum or siding

 

Axial Distributed loads (plf)a

1 pcf (EPS): Transverse Loads (psf)b

Strength

Service

Strength

Service loads

Gauge

L(ft)

LRFD (Φ pn)

ASD (pa)

LRFD (Φ Wn)

ASD (Wa)

L/180

L/240

L/360

24

8

2,821

1,763

88

55

80

60

40

24

9

2,821

1,763

74

46

64

48

32

24

10

2,821

1,763

60

38

52

39

26

24

12

2,821

1,763

42

26

35

26

17

20

8

5,000

3,125

88

55

94

70

47

20

9

5,000

3,125

78

49

77

58

39

20

10

5,000

3,125

70

44

64

48

32

20

12

5,000

3,125

59

37

45

34

22

18

8

9,977

6,236

88

55

101

76

51

18

9

9,977

6,236

78

49

84

58

39

18

10

9,977

6,236

70

44

71

53

35

18

12

9,938

6,211

59

37

51

38

25

16

8

13,583

8,489

88

55

107

80

53

16

9

13,324

8,327

78

49

90

67

45

16

10

13,040

8,150

70

44

76

57

38

16

12

12,406

7,754

59

37

56

42

28

 

 

Table 7.  5.5” Thick Panel; Stiffeners (350T75-Mils) at 24” o.c.; no gypsum or siding

 

Axial Distributed loads (plf)a

1 pcf (EPS): Transverse Loads (psf)b

Strength

Service

Strength

Service loads

Gauge

L(ft)

LRFD (Φ pn)

ASD (pa)

LRFD (Φ Wn)

ASD (Wa)

L/180

L/240

L/360

24

8

2,116

1,322

63

39

66

50

33

24

9

2,116

1,322

49

31

52

39

26

24

10

2,116

1,322

40

25

41

31

20

24

12

2,116

1,322

28

17

27

20

13

20

8

3,750

2,344

88

55

81

61

41

20

9

3,750

2,344

78

49

65

49

33

20

10

3,750

2,344

70

44

53

40

26

20

12

3,750

2,344

59

37

36

27

18

18

8

7,483

4,667

88

55

90

67

45

18

9

7,483

4,667

78

49

73

49

33

18

10

7,483

4,667

70

44

60

45

30

18

12

7,453

4,658

59

37

42

31

21

16

8

10,187

6,367

88

55

96

72

48

16

9

9,993

6,246

78

49

79

59

40

16

10

9,780

6,113

70

44

66

49

33

16

12

9,305

5,816

59

37

47

35

23

Loadings comply with 2001 and 2007 AISI S100; IBC 2006, IBC 2009 and IBC 2012; and IRC 2006, 2009 and 2012.
LFRD: Capacity factor, Φ = 0.8 (axial & flexure); Φ = 0.5 (shear); ASD: Factor of safety = 2.0
(a) Values account for yielding, local buckling and lateral buckling.
(b) Values account for yielding, local buckling and lateral torsional buckling.

 

Table 8.  7.5” Thick Panel; Stiffeners (350T75-Mils) at 16” o.c.; no gypsum or siding

 

Axial Distributed loads (plf)a

1 pcf (EPS): Transverse Loads (psf)b

Strength

Service

Strength

Service loads

Gauge

L(ft)

LRFD (Φ pn)

ASD (pa)

LRFD (Φ Wn)

ASD (Wa)

L/180

L/240

L/360

24

8

3,311

2,069

115

72

65

49

33

24

9

3,311

2,069

91

57

56

42

28

24

10

3,311

2,069

74

46

48

36

24

24

12

3,311

2,069

51

32

36

27

18

20

8

6,205

3,878

120

75

70

52

35

20

9

6,205

3,878

107

67

60

45

30

20

10

6,205

3,878

96

60

52

39

26

20

12

6,205

3,878

80

50

40

30

20

18

8

11,233

7,020

120

75

72

54

36

18

9

11,143

6,965

107

67

62

45

30

18

10

11,019

6,887

96

60

55

41

27

18

12

10,735

6,709

80

50

43

32

21

16

8

14,059

8,787

120

75

73

55

37

16

9

13,917

8,698

107

67

64

48

32

16

10

13,761

8,601

96

60

56

42

28

16

12

13,405

8,378

80

50

44

33

22

 

 

Table 9.  7.5”Thick Panel; Stiffeners (350T75-Mils) at 16” o.c.; no gypsum or siding.

 

Axial Distributed loads (plf)a

1 pcf (EPS): Transverse Loads (psf)b

Strength

Service

Strength

Service loads

Gauge

L(ft)

LRFD (Φ pn)

ASD (pa)

LRFD (Φ Wn)

ASD (Wa)

L/180

L/240

L/360

24

8

2,483

1,552

77

48

60

45

30

24

9

2,483

1,552

61

38

50

38

25

24

10

2,483

1,552

49

31

42

32

21

24

12

2,483

1,552

34

21

31

23

15

20

8

4,654

2,909

120

75

66

49

33

20

9

4,654

2,909

107

67

56

42

28

20

10

4,654

2,909

96

60

48

36

24

20

12

4,654

2,909

80

50

36

27

18

18

8

8,424

5,265

120

75

69

51

34

18

9

8,358

5,223

107

67

59

42

28

18

10

8,264

5,165

96

60

51

38

25

18

12

8,051

5,032

80

50

39

29

19

16

8

10,544

6,590

120

75

71

53

35

16

9

10,438

6,524

107

67

61

46

30

16

10

10,321

6,450

96

60

53

40

27

16

12

10,054

6,248

80

50

41

31

21

Loadings comply with 2001 and 2007 AISI S100; IBC 2006, IBC 2009 and IBC 2012; and IRC 2006, 2009 and 2012.
LFRD: Capacity factor, Φ = 0.8 (axial & flexure);    Φ = 0.5 (shear); ASD: Factor of safety = 2.0
(a) Values account for yielding, local buckling and lateral buckling.
(b) Values account for yielding, local buckling and lateral torsional buckling.