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Results of Testing the Gypsum Board (12.7-mm and 15.9-mm thick) Properties of the Product

Property

Unit

Requirement

Result

Flexural strength (Method B)Footnote (1) bearing edges perpendicular to panel length

N

≥ 476

Pass

Flexural strength (Method B)Footnote (1) bearing edges parallel to panel length

N

≥ 160

Pass

Humidified deflection (Method B)Footnote (1)

mm

≤ 32

Pass

Nail-pull resistance (Method B)Footnote (1)

N

≥ 343

Pass

Hardness (Method B)Footnote (1) core

N

≥ 49

Pass

Hardness (Method B)Footnote (1) end

N

≥ 49

Pass

Hardness (Method B)Footnote (1) edge hardness

N

≥ 49

Pass

Results of Testing the Racking Load of the Product

Property

Unit

Control SpecimenFootnote (1)

12.7-mm ResultFootnote (2)

15.9-mm Result

Deflection

3.5 kN

mm

3.570

2.81Footnote (3)

2.60

7.0 kN

mm

Footnote (4)

7.74Footnote (4)

8.51

10.5 kN

mm

Footnote (4)

6.17Footnote (4)

17.10

Residual deflection

3.5 kN

mm

2.160

1.14Footnote (3)

1.66

7.0 kN

mm

Footnote (4)

3.59Footnote (4)

4.53

10.5 kN

mm

Footnote (4)

3.56Footnote (4)

9.94

Residual/Deflection

3.5 kN

%

60.5

41Footnote (3)

64

7.0 kN

%

Footnote (4)

48Footnote (4)

53

10.5 kN

%

Footnote (4)

58Footnote (4)

58

Results of Testing the Flame-spread Rating and Smoke Developed Classification of the Product
Property

Requirement

Result

Flame-spread rating

≤ 150

20

Smoke Developed Classification

≤ 300

35