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Results of Testing the Physical Properties of the Product
Property

Unit

Requirement

ResultFootnote (1) , Footnote (2)

Dimensional change

coefficient of linear expansion (thermal) longitudinal

cm/cm/°C

< 2 × 10-5

4.0 × 10-5Footnote (3)

coefficient of linear expansion (swelling): oven dry to vacuum-pressure soak

%

< 0.5 by 80% of specimens

0.0

Strength and stiffness

modulus of elasticity (MOE) span-to-depth ratio within 18 to 21

MPa

> 750

2766

modulus of rupture (MOR) span-to-depth ratio within 18 to 21

MPa

> 9

29

Impact resistance (Izod impact, notched)

J/m

> 53.4

22.8Footnote (4)

Hardness (11.28-mm-diam ball)

kN

> 1.8

3.0

Creep, recovery and load duration

%

< 25 for creep

38Footnote (5)

Creep, recovery and load duration

%

> 75 for recovery

80

Creep, recovery and load duration

%

No failure

Pass

Strength and stiffness after aging

weathering: impact resistance

%

> 75 of non- weathered value

102

accelerated aging - MOE

%

> 50 of non-aged value

97

accelerated aging - MOR

%

> 50 of non-aged value

96

Fastener holding capacity

Metal clip fastener withdrawal strength

N

> 600

1426

Lateral Fastener Strength

N

> 720

1006

Flame-spread rating

≤ 200

40

Results of Testing the Durability, Decay, Termite and Slip Resistance Properties of the Product

Property

Requirement

Result

SPF Lumber

FORESTAR WPC DECKING

Durability - MOE

Mean percentage losses in MOE and MOR after UV exposure and accelerated aging must be less than or equal to spruce lumber.

15.3

17.2Footnote (1)

Durability - MOR

Mean percentage losses in MOE and MOR after UV exposure and accelerated aging must be less than or equal to spruce lumber.

27.9

16.9

Decay resistance - % loss in weight

Mean percentage losses in weight and compressive strength after exposure to decay-causing fungi must be equal to or better than spruce heartwoodFootnote (2) .

FailFootnote (3)

Decay resistance - compressive strength

Mean percentage losses in weight and compressive strength after exposure to decay-causing fungi must be equal to or better than spruce heartwoodFootnote (2).

Pass

Termite resistance

Rating must be equal to or better than preservative-treated wood conforming to CSA 80.1-M97.

Pass

Property

Requirement

Result Parallel to Planks

Result Perpendicular to Planks

Slip resistance ( longitudinal planks)

dry condition

> 0.5

0.2Footnote (4)

0.2Footnote (4)

wet condition

> 0.5

0.5

0.6

Results of Testing the Performance of the Product under Concentrated Static Loads and Impact Loads
Property

Requirement

ResultFootnote (1)

Minimum Ultimate Load (kN)

Maximum Deflection under 0.89 kN Load (mm)

Ultimate Load (kN)

Deflection under 0.89 kN Load (mm)

Concentrated static load

decking at 50°C

2.45

2.4

2.94

3.23Footnote (2)

decking at 20°C

2.45

2.4

3.47

2.7Footnote (2)

decking at –35°C

2.45

2.4

4.79

1.55

Impact load of 102 N·m

decking at 50°C

1.78

2.0

1.78

0.9