[CCMC 14342-R] CCMC Canadian code compliance evaluation
From: National Research Council Canada
Zhejiang Yuansentai Wood Plastic Science And Technology Co., Ltd.
Si’an Town Industrial Function Area
PE Coextrusion WPC Decking
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It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as exterior decking and stair treads in accordance with the conditions and limitations stated in this evaluation, complies with the following code:
National Building Code of Canada 2015
|ID||Code provision||Solution type|
|09-03-02-09-00-0-00||188.8.131.52. Termite and Decay Protection||Alternative|
|09-04-02-03-00-0-00||184.108.40.206. Platforms Subject to Snow and Occupancy Loads||Acceptable|
|09-08-09-01-00-0-00||220.127.116.11. Loads on Stairs and Ramps||Acceptable|
|09-23-03-01-00-0-00||18.104.22.168. Standards for Nails and Screws||Acceptable|
|09-23-15-05-00-0-00||22.214.171.124. Subfloor Thickness or Rating||Alternative|
The above opinion(s) is/are based on the evaluation by the CCMC of technical evidence provided by the evaluation holder, and is bound by the stated conditions and limitations. For the benefit of the user, a summary of the technical information that forms the basis of this evaluation has been included.
PE Coextrusion WPC Decking
Product descriptionThe product is made of profiled cellulosic/polymer composite extrusions (planks and trims). The extrusions contain cellulose-based fibres that are derived from wood residues or agricultural waste and high density polyethylene (HDPE). The deck planks are manufactured in hollow cross-sections with regular voids and walls of varying thickness. The planks are manufactured in nominal dimensions of 22.5 mm × 138 mm and are available in lengths of 2.44 m, 3.66 m and 4.88 m. The product is intended to be used as exterior decking installed over traditional structural wood framing.
This evaluation is valid only for products produced at the following plant:
|Product name||Manufacturing plant|
|Changxing County, Huzhou City, China|
|PE Coextrusion WPC Decking||Product evaluated by the CCMC|
Product evaluated by the CCMC Indicates that the product from this manufacturing facility has been evaluated by the CCMC
Conditions and limitations
The CCMC’s compliance opinion is bound by this product being used in accordance with the conditions and limitations set out below.
- The product must be installed at a minimum 150-mm height above the finished grade.
- The products used as exterior decking are not to be considered equivalent to lumber decking in terms of slip resistance.
- When used as exterior decking, the product must be installed with joists spaced no greater than 300 mm o.c. Each plank must be supported by at least three joists.
- When used as stair treads, the product must be installed with stringers spaced no greater than 203 mm apart.
- Slip-resistant strips shall be provided in accordance with Article 126.96.36.199, Finish for Treads and Landings, of Division B of the NBC 2015.
- The product must be fastened to the wood joists with fasteners conforming to Article 188.8.131.52., Standards for Nails and Screws, of Division B of the NBC 2015 that have a corrosion protection coatingFootnote (1) or are made of stainless steel. The planks must be fastened with at least one fastener per joist and the fasteners must be at least 25.4 mm long.
- The product must be installed according to the manufacturer’s installation instructions.
- The product must be gapped end-to-end, based on the length of the plank and the temperature at installation in accordance with the manufacturer’s recommendations. The width-to-width gapping must be at least 3 mm for all installation temperatures. The product must not be installed at temperature below 0°C.
- The product should be installed by a knowledgeable person familiar with the product installation guide.
- The product’s label or packaging must be identified with the manufacturer’s name or logo and the phrase “CCMC 14342-R.”
This evaluation is based on demonstrated conformance with the following criteria:
|Criteria number||Criteria name|
|CCMC-TG-067315.01-15||CCMC Technical Guide for wood thermoplastic composite (WPC) decking with polyethylene (PE) coextrusion|
|Property||Unit||Requirement||Result Table footnote (1)Table footnote (2)Table footnote (3)|
|Dimensional change||coefficient of linear expansion (thermal)||longitudinal||cm/cm/°C||< 2 × 10-5||5.3 × 10-5Table footnote (4)|
|coefficient of linear expansion (swelling): oven-dry to vacuum-pressure soak||%||< 0.5 by 80% of specimens||0.1|
|Strength and stiffness||modulus of elasticity (MOE)||span-to-depth ratio within 18 to 21||MPa||> 750||2 294|
|modulus of rupture (MOR)||> 9||25|
|Impact resistance (Izod impact, notched)||J/m||> 53.4||21.3Table footnote (5)|
|Creep, recovery and load duration||%||< 25 for creep||19|
|> 75 for recovery||80|
|Strength and stiffness after aging||weathering: impact resistance||%||> 75 of non-weathered value||97|
|accelerated aging||MOE||%||> 50 of non-aged value||97|
|Fastener holding capacity||metal clip fastener withdrawal strength||N||> 600||1 195|
|metal clip fastener lateral strength||> 720||1 190|
|Flame-spread rating||-||≤ 200||80|
|Smoke development||-||Report value||445|
|Property||Requirement||ResultTable footnote (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||1.6||2.63||3.27Table footnote (2)|
|decking at 20°C||3.57||2.21Table footnote (2)|
|decking at –35°C||5.70||1.78Table footnote (2)|
|Impact load of 102 N·m||decking at 50°C||1.78||1.6||1.78||2.92Table footnote (2)|
|Property||Requirement||ResultTable footnote (1)|
|Minimum ultimate load (kN)||Maximum deflection under 1 kN (mm)||Applied ultimate load (kN)||Deflection under 1 kN (mm)|
|Concentrated static load||stair tread||Table footnote (2)5||0.75||6.8||1.38Table footnote (3)|
|stair tread nosing||5Table footnote (4)||-||20.7||-|
|Spruce-Pine-Fir (S-P-F) lumber||PE Coextrusion WPC Decking|
|Bending stiffness||Mean percentage loss in bending stiffness (EI) after UV exposureTable footnote (1) and accelerated agingTable footnote (2) must be less than or equal to S-P-F lumber||21.9%||11.7%|
|Moment capacity||Mean percentage loss in moment capacity (Mr) after UV exposureTable footnote (1) and accelerated agingTable footnote (2) must be less than or equal to spruce lumber||28.5%||21.2%|
|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 S-P-F dimensional lumber||FailTable footnote (1)|
|% loss in compressive strength|
|Termite resistance||Rating must be equal to or better than preservative-treated wood conforming to CSA O80.1-M97||Pass|
Additional performance data
|Density||kg/m3||Report value||1 237|
|Hardness (11.28-mm-diam ball)||kN||≥ 1.8||3.1|
|Slip resistance (longitudinal)||dry condition||-||≥ 0.5||0.2Table footnote (1)|
|wet condition||0.3Table footnote (1)|
|Slip resistance (transverse)||dry condition||-||≥ 0.5||0.2Table footnote (1)|
Use of Canadian Construction Materials Centre (CCMC) assessments
This assessment must be read in the context of the entire CCMC Registry of Product Assessments, any applicable building code or by-law requirements, and/or any other regulatory requirements (for example, the Canada Consumer Product Safety Act, the Canadian Environmental Protection Act, etc.).
It is the responsibility of the user to confirm that the assessment they are using is current and has not been withdrawn or superseded by a later version on the CCMC Registry of Product Assessments.
The National Research Council of Canada (NRC) has evaluated only the characteristics of the specific product described herein. The information and opinions in this evaluation are directed to those who have the appropriate degree of experience to use and apply its contents (such as authorities having jurisdiction, design professionals and specifiers). This evaluation is valid when the product is used as part of permitted construction, respecting all conditions and limitations stated in the evaluation, and in accordance with applicable building codes and by-laws.
This evaluation is provided without representation, warranty or guarantee of any kind, expressed or implied, and the NRC provides no endorsement for any evaluated product. The NRC accepts no responsibility whatsoever arising in any way from any and all use of or reliance on the information contained herein or the use of any evaluated product. The NRC is not undertaking to render professional or other services on behalf of any person or entity nor to perform any duty owed by any person or entity to another person or entity.
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© His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, 2023
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