[CCMC 14476-R] CCMC Canadian code compliance evaluation
From: National Research Council Canada
| CCMC number: | 14476-R |
| Status: | Active |
| Issue date: | 2023-03-27 |
| Modified date: | 2023-06-20 |
| Evaluation holder: | Tolko Industries Ltd.
3000 - 28th Street |
| Product name: | Tolko T-TEC LSL |
| Compliance: | NBC 2015, OBC |
| Criteria: |
|
In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.
Learn more about CCMC recognition Look for the trusted CCMC mark on products to verify compliance.Compliance opinion
It is the opinion of the Canadian Construction Materials Centre that the evaluated product, when used as as structural composite lumber (SCL) 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 |
|---|---|---|
| 04-03-01-01-00-0-00 | 4.3.1.1.(1) Buildings and their structural members m ... | Acceptable |
| 09-23-04-02-00-0-00 | 9.23.4.2.(3) Spans for built-up wood and glued-lamina ... | Alternative |
Ontario Building Code
Ruling No. 23-03-374 (14476-R) authorizing the use of this product in Ontario, subject to the terms and conditions contained in the Ruling, was made by the Minister of Municipal Affairs and Housing on 2023-06-20 pursuant to s.29 of the Building Code Act, 1992 (see Ruling for terms and conditions). This Ruling is subject to periodic revisions and updates.
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.
Product information
Product name
Tolko T-TEC LSL
Product description
The product is a laminated strand lumber (LSL), which is a structural composite lumber (SCL) manufactured from strands of aspen and black poplar blended with Lupranate® M20FB, a polymeric methylene diphenyl diisocyanate (MDI) binder (see CCMC 13421-R), oriented in a parallel direction, formed into mats and pressed to the required thickness. The wood species, adhesive, manufacturing parameters, and finished product thickness, width and length are as specified in the quality control manual that contains the manufacturing standard. See Figure 1 for strand orientation and details.
The product is available in thicknesses up to 133 mm, depths up to 610 mm and lengths up to 10.8 m.
The manufacturing quality assurance program and records are verified by APA – The Engineered Wood Association as part of the product certification.
In addition, when the product is treated with Borogard ZB (zinc borate) powder, it goes by the name of Tolko LSL with ZB. It may be used within the building envelope (i.e., protected assemblies) as sill plates over masonry or concrete foundations, footings or slabs for decay resistance. It is intended for Use Category 2 (UC2) only, as per the American Wood Protection Association (AWPA), when interior construction is not in contact with the ground but may be subjected to dampness.
The permitted design values are outlined in Table 1, Table 2 and Table 3.
- L direction – parallel to longitudinal direction of member
- X direction – parallel to surface of member and normal to L direction
- Y direction – normal to both L and X directions
Applicability of this evaluation
Applicable to APA-trademarked Tolko T-TEC LSL from the plant below manufactured on or after July 1, 2022.
Manufacturing plant
This evaluation is valid only for products produced at the following plant:
| Product name | Manufacturing plant |
|---|---|
| Slave Lake, AB, CA | |
| Tolko T-TEC LSL | 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, as with all SCL, is intended for dry service applications only.(1)
- The zinc borate treated product, Tolko LSL with ZB, follows Use Category 2 (UC2) as per AWPA, when interior construction is not in contact with the ground but may be subjected to dampness. Unless noted within this evaluation, all design provisions for the product apply to Tolko LSL with ZB as well.
- The product is intended for use in construction as an alternative material to lumber. Proprietary design values presented for the product are to be used by professional engineers for design in accordance with CSA O86-14, "Engineering design in wood", for structural applications such as beams, headers, joists, rafters, and columns as intended by the product manufacturer. The specific application must be qualified through testing and validated by the manufacturer. Applications such as I-joist flanges, metal-plated truss chords, wall studs, and rim boards are beyond the scope of this evaluation.
i. Engineering requirements
The design and installation of the product requires engineering on a case-by-case basis. All drawings or related documents must bear the authorized seal of a professional engineer skilled in wood design and licensed to practise under the appropriate provincial or territorial legislation. The engineer must design in accordance with CSA O86 and may use the Engineering Guide for Wood-Frame Construction published by the Canadian Wood Council as a guide.
The specified strengths must not exceed the values set forth in Table 1 in this evaluation. Basic nail, screw, bolt and lag screw capacities must be as shown in Table 2. Nailing of the product must conform to Table 3.
When used as joists, rafters and beams, the ends of all members must be restrained to prevent rollover. This is normally achieved by attaching a diaphragm sheathing to the top or to the compression edge, and to an end wall or shear transfer panel capable of transferring a minimum unfactored uniform load of 730 N/m or the required shear forces due to wind or seismic conditions. Blocking or cross-bracing with equivalent strength may also be used. For beams with a maximum depth-to-width ratio no more than 6.5:1, the compression edge of the beams must be laterally supported at intervals no more than 610 mm to prevent lateral displacement and rotation. When the depth-to-width ratio exceeds 6.5:1 but is less than 9:1, the compression edge of the beams must be continuously laterally supported throughout its length, except where designed in accordance with CSA O86.
ii. Engineering support provided by the manufacturer
Tolko Industries Ltd. will coordinate the engineering support and may be contacted at:
Tel.: 250-545-4411
Fax: 250-550-2550
- Damaged or defective products must not be used, unless repaired in accordance with written instructions from the manufacturer.
- This product must be identified with the phrase “CCMC 14476-R” along the side or top of the SCL member. This CCMC number is only valid when it appears in conjunction with the APA EWS certification mark. In addition, the zinc borate treated product must be further identified with the designations: “Tolko LSL with ZB” and “AWPA UC2.
Technical information
This evaluation is based on demonstrated conformance with the following criteria:
| Criteria number | Criteria name |
|---|---|
| CCMC-TG-061710-15A | CCMC Technical Guide for Structural Composite Lumber |
The evaluation holder has submitted technical documentation for the CCMC evaluation. Testing was conducted at laboratories recognized by the CCMC. The corresponding technical evidence for this product is summarized below.
Design requirements
|
Grade |
Modulus of elasticity,Table footnote footnote (6) E |
Beam orientation |
Plank orientation |
Axial |
|||||
|---|---|---|---|---|---|---|---|---|---|
|
Bending,Table footnote footnote (7) Fb |
Shear, Fv |
Compression perpendicular to the grain, Fcperp |
Bending, Fb |
Shear, Fv |
Compression perpendicular to the grain,Table footnote footnote (8) Fcperp |
Tension,Table footnote footnote (9) Ft |
Compression, Fcparallel |
||
| Unit | MPa (× 106 psi) | MPa (psi) | MPa (psi) | MPa (psi) | MPa (psi) | MPa (psi) | MPa (psi) | MPa (psi) | MPa (psi) |
|
1.35E |
9 308 (1.35) |
23.6 (3 420) |
4.0 (580) |
9.40 (1 370) |
26.3 (3 810) |
1.4 (205) |
8.6 (1 250) |
14.7 (2 130) |
18.2 (2 630) |
|
1.55E |
10 690 (1.55) |
30.1 (4 360) |
5.8 (845) |
11.3 (1 640) |
33.40 (4 840) |
1.8 (260) |
9.7 (1 405) |
18.7 (2 705) |
21.5 (3 110) |
|
Grade |
Equivalent specific gravity | |||||
|---|---|---|---|---|---|---|
| Nails | Nails and wood screws | Bolts and lag screws installed in faceTable footnote footnote (4) | ||||
| Withdrawal load | Lateral load | Lateral load | ||||
| Installed in edge | Installed in face | Installed in edge | Installed in face | Load applied parallel to grain | Load applied perpendicular to grain | |
| 1.35E and 1.55E | 0.42 | 0.44 | 0.47 | 0.50 | 0.50 | 0.50 |
| Nail orientationTable footnote footnote (2) | Thickness, mm (in.) | FastenerTable footnote footnote (3)Table footnote footnote (4) | Minimum end distance, mm (in.)Table footnote footnote (5) | Closest o.c. nail spacing, mm (in.)Table footnote footnote (6) – single row | Closest o.c. nail spacing, mm (in.) – multiple rowsTable footnote footnote (6)Table footnote footnote (7)Table footnote footnote (8) |
|---|---|---|---|---|---|
| Edge |
29 (1 ⅛) |
64 mm and smaller (8d and smaller) |
51 (2) | 102 (4) | Not permitted |
| 29 (1 ⅛) |
76 mm and 83 mm (10d and 12d) |
64 (2 ½) | 127 (5) | Not permitted | |
| 29 (1 ⅛) | 89 mm (16d) | 76 (3) | 152 (6) | Not permitted | |
| 32 ≤ t < 38 (1 ¼ ≤ t < 1 ½) |
64 mm and smaller (8d and smaller) |
51 (2) | 102 (4) | Not permitted | |
| 32 ≤ t < 38 (1 ¼ ≤ t < 1 ½) | 76 mm and 83 mm (10d and 12d) | 51 (2) | 102 (4) | Not permitted | |
| 32 ≤ t < 38 (1 ¼ ≤ t < 1 ½) | 89 mm (16d) | 64 (2 ½) | 127 (5) | Not permitted | |
| 38 ≤ t ≤ 89 (1 ½ ≤ t ≤ 3 ½) | 64 mm and smaller (8d and smaller) | 25 (1) | 51 (2) | 76 (3)Table footnote footnote (9) | |
| 38 ≤ t ≤ 89 (1 ½ ≤ t ≤ 3 ½) | 76 mm and 83 mm (10d and 12d) | 51 (2) | 76 (3) | 102 (4)Table footnote footnote (9) | |
| 38 ≤ t ≤ 89 (1 ½ ≤ t ≤ 3 ½) | 89 mm (16d) | 64 (2½) | 76 (3) | 152 (6)Table footnote footnote (9) | |
| Face | 29 (1 ⅛) | 64 mm and smaller (8d and smaller) | 22 (7/8) | 25 (1) | 25 (1) |
| 29 (1 ⅛) | 76 mm and 83 mm (10d and 12d) | 22 (7/8) | 25 (1) | 25 (1) | |
| 29 (1 ⅛) | 89 mm (16d) | 22 (7/8) | 38 (1 ½) | 38 (1 ½) | |
| 32 ≤ t < 38 (1 ¼ ≤ t < 1 ½) | 64 mm and smaller (8d and smaller) | 22 (7/8) | 25 (1) | 25 (1) | |
| 32 ≤ t < 38 (1 ¼ ≤ t < 1 ½) | 76 mm and 83 mm (10d and 12d) | 22 (7/8) | 25 (1) | 25 (1) | |
| 32 ≤ t < 38 (1 ¼ ≤ t < 1 ½) | 89 mm (16d) | 22 (7/8) | 38 (1 ½) | 38 (1 ½) | |
| 38 ≤ t ≤ 89 (1 ½ ≤ t ≤ 3 ½) | 64 mm and smaller (8d and smaller) | 13 (½) | 25 (1) | 25 (1) | |
| 38 ≤ t ≤ 89 (1 ½ ≤ t ≤ 3 ½) | 76 mm and 83 mm (10d and 12d) | 13 (½) | 25 (1) | 25 (1) | |
| 38 ≤ t ≤ 89 (1 ½ ≤ t ≤ 3 ½) | 89 mm (16d) | 22 (7/8) | 38 (1 ½) | 38 (1 ½) |
- Edge (joist) loading
- Face (plank) loading
- Offset one half of the tabulated required spacing
- Tabulated required spacing
- Minimum 13 mm (1/2 in.) spacing symmetric about the center line
The manufacturing quality assurance program has been updated to include requirements specified in ASTM D 5456-14b, “Standard Specification for Evaluation of Structural Composite Lumber Products,” and has been verified by independent, third-party monitoring and inspection conducted by APA EWS as part of the product certification.
Design values obtained from testing to ASTM D 5456-18 and ASTM D 5456-19
The design values obtained from testing to ASTM D 5456-18 and ASTM D 5456-19, which are equivalent to ASTM D 5456-14b specified in CSA O86-14, are summarized below.
| Property | Test information |
|---|---|
| Bending | Specimens were tested in edgewise and flatwise bending to establish the characteristic values. Qualification test data has been used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength. |
| Shear | Specimens were tested in shear (block shear tests) to establish the characteristic values. Qualification test data has been used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength. |
| Compression parallel to the grain | Specimens were tested in compression parallel to the grain to establish the characteristic values. Qualification test data has been used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength. |
| Compression perpendicular to the grain | Specimens were tested in compression perpendicular to the grain to establish the characteristic values. In plank orientation, and in accordance with Clause 7.2.3.2 of ASTM D 5456, the lesser of stress at proportional limit and 1 mm (0.04 in.) deformation was selected to determine the characteristic value, and multiplied by 1.81 as per CSA O86, Clause 16.3.3.5. For the joist orientation, and in accordance with Clause 7.2.3.1 of ASTM D 5456, the characteristic value was the stress at 1 mm (0.04 in.) deformation, and multiplied by 1.09 to establish the specified strength in accordance with CSA O86, Clause 16.3.3.5. |
| Tension parallel to the grain | Specimens were tested in tension to establish the characteristic value. Qualification test data has been used to establish the applicable coefficient of variation, CVw, and the reliability normalization factor from CSA O86 was used to determine the specified strength. |
| Nail withdrawal | Nail withdrawal values were established following ASTM D 1761-12, “Standard Test Methods for Mechanical Fasteners in Wood,” for an 8d common nail having a 31.75-mm penetration. Specimens of 1.35E grade were tested and the equivalent species capacity was determined in accordance with ASTM D 5456-18, A2.4. The values determined apply to 1.55E grade as well. |
| Nail bearing (lateral) | Nail bearing (lateral) strength was determined as per ASTM D 5764-18, “Standard Test Method for Evaluating Dowel-Bearing Strength of Wood and Wood-Based Products,” using 10d common nails with a nominal diameter of 3.76 mm . Specimens of 1.35E grade were tested and the mean bearing capacity was used to establish the equivalent species capacity as per ASTM D 5456, A2.7. The values determined apply to 1.55E grade as well. |
| Nail Spacing | Minimum end distance and center to center nail spacing was determined based on testing. Tests were conducted on 29 mm, 32 mm, and 38 mm thick 1.35E grade specimens with 8d, 12d, and 16d nails (3.33 mm, 3.76 mm, and 4.11 mm nominal diameters respectively) driven into the faces and edges of the specimens. |
| Bolt bearing | Bolt bearing capacity was determined in accordance with ASTM D 5764 with 12.7-mm and 19.1-mm bolts. Specimens of 1.35E grade were tested and the equivalent species capacities were determined for X- and Y-orientation, as per ASTM D 5456, A2.7. The values determined apply to 1.55E grade as well. |
| Creep and DOL | A total of 30 1.35E grade specimens were tested and a 90-day creep assessment was conducted in accordance with ASTM D 5456 and ASTM D 6815-09(2015), “Standard Specification for Evaluation of Duration of Load and Creep Effects of Wood and Wood-Based Products.” Equivalency to the duration of load behaviour of sawn lumber was demonstrated. |
| Adhesives | The binder (see CCMC 13421-R) meets CSA O437.2-93, “Evaluation of Binder Systems for OSB and Waferboard,” with modifications. The binder adhesive was evaluated as per ASTM D5456, A5. In addition, after a 14-day soak conditioning, the LSL specimens with an equivalent methylene diphenyl diisocyanate (MDI) binder were subjected to the 90-day creep test of ASTM D 6815 and performance was deemed acceptable . |
| Zinc borate treatment | The product was treated with zinc borate in accordance with AWPA P51-20, “Standard for Zinc Borate (ZB).” The treatment was found to be effective in controlling decay for environmental conditions expected in sill plate applications. Structural properties were determined for ZB-treated LSL. The structural properties apply to non-treated LSL as well. In addition, the ZB treatment was found not to affect the fastener properties based on a test program. |
Administrative information
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.
Disclaimer
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.
Language
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In the case of any discrepancy between the English and French version of this document, the English version shall prevail.
Copyright
© His Majesty the King in Right of Canada, as represented by the National Research Council of Canada, 2023
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the CCMC.
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