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Results of Testing of Basic Physical and Mechanical Properties
Property

Unit

Requirement

ResultFootnote (1) Footnote (2)

Dimensional change

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

%

≤ 0.5, by 80% of specimens

0.06

Strength and stiffness

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

MPa

≥ 750

1 449

Strength and stiffness

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

MPa

≥ 9

24.42

Strength and stiffness

creep, recovery and load duration

%

≤ 25 for creep

11.3

Strength and stiffness

creep, recovery and load duration

%

≥ 75 for recovery

96.9

Strength and stiffness

creep, recovery and load duration

%

No failure

Pass

Strength and stiffness after aging

Weathering  - impact resistance

%

≥ 75 of non-weathered value

103

Strength and stiffness after aging

accelerated aging - MOE

%

≥ 50 of non-aged value

106

Strength and stiffness after aging

accelerated aging - MOR

%

≥ 50 of non-aged value

100

Strength and stiffness after aging

fastener holding capacity - nail withdrawal strength

N

≥ 600

3 219

Strength and stiffness after aging

fastener holding capacity - lateral nail strength

N

≥ 720

2 098

Results of Testing of Performance Under Both Concentrated Static Loads and Impact Loads

Property

Requirement

ResultFootnote (1)

Concentrated static load

decking at 50°C

minimum ultimate load (kN)

≥ 2.45

3.02

decking at 20°C

minimum ultimate load (kN)

≥ 2.45

4.03

decking at 35°C

minimum ultimate load (kN)

≥ 2.45

5.94

decking at 50°C

maximum deflection under 0.89 kN load (mm)

≤ 2.0

5.32Footnote (2)

decking at 20°C

maximum deflection under 0.89 kN load (mm)

≤ 2.0

3.19Footnote (3)

decking at 35°C

maximum deflection under 0.89 kN load (mm)

≤ 2.0

2.31Footnote (3)

Following impact load of 102 N·m

decking at 50°C

minimum ultimate load (kN)

≥ 1.78

no break

decking at 50°C

maximum deflection under 0.89-kN load (mm)

≤ 2.0

3.57Footnote (2)

Results of Testing of Durability

Property

Requirement

Result

SPF Lumber

ChoiceDek® MoistureShield®Elite

Bending stiffness

Mean percentage loss in bending modulus of elasticity (MOE) after ultraviolet (UV) exposureFootnote (1) and accelerated agingFootnote (2) must be less than or equal to spruce lumber

30.8%

31.3%Footnote (3)

Bending strength

Mean percentage loss in bending stress (MOR) after UV exposureFootnote (1) and accelerated agingFootnote (2) must be less than or equal to spruce lumber

28.7%

25.8%

Results of Testing of Decay and Termite Resistance

Property

Requirement

Result

Decay resistance % loss in weight

Mean percentage loss in weight and compressive strength after exposure to decay- causing fungi must be equal to or better than preservative-treated wood conforming to CAN/CSA-O80.1-M97, "Preservative Treatment of All Timber Products by Pressure Processes"

PassedFootnote (1)

Decay resistance compressive strength

Mean percentage loss in weight and compressive strength after exposure to decay- causing fungi must be equal to or better than preservative-treated wood conforming to CAN/CSA-O80.1-M97, "Preservative Treatment of All Timber Products by Pressure Processes"

PassedFootnote (1)

Termite resistance

Rating must be equal to or better than preservative-treated wood conforming to CAN/CSA-O80.1

PassedFootnote (1)

Results of Testing of Performance Under Concentrated Static Load - Stair Tread

Property

Requirement

ResultFootnote (1)

Concentrated static load

stair tread

minimum ultimate load (kN)

5Footnote (2)

5.44

stair tread nosing

minimum ultimate load (kN)

5Footnote (3)

7.04

Concentrated static load

stair tread

maximum deflection under 1 kN (mm)

0.75

2.50Footnote (4)

stair tread nosing

maximum deflection under 1 kN (mm)

0.75

2.50Footnote (4)

Results of Testing of Additional Performance Data

Property

Unit

Reference value

Result

Coefficient of linear expansion (thermal) - longitudinal

cm/cm/°C

≤ 2 x 10-5

3.63 x 10−5Footnote (1)

Impact resistance (Izod impact, notched)

J/m

≥ 53.4

29.9Footnote (2)

Hardness (11.28-mm-diam ball)

kN

≥ 1.8

4.724

Slip resistance (longitudinal) - wet condition

slip index

≥ 0.5

0.38Footnote (3)

Slip resistance (longitudinal) - dry condition

slip index

≥ 0.5

0.33Footnote (3)