[CCMC 13270-L] CCMC Standard compliance evaluation
From: National Research Council Canada
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MT18HS truss plate is manufactured from 18-gauge steel sheet that meets the minimum strength and yield requirements of ASTM A 653/A 653M, “Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process,” Grade 60 HSLA II410 steel and galvanized with G90 zinc coating as per ASTM A 924/A 924M, “Standard Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process.” MT18HS truss plate has an uncoated nominal thickness of 1.22 mm and is stamped with 0.0124 teeth per square mm. The teeth are approximately 8 mm in length.
This evaluation is limited to products produced at the following plant(s):
- Bradford, Ontario, Canada
This evaluation is based on demonstrated conformance with the following criteria:
|Criteria number||Criteria name|
|CSA-O86-14||Engineering Design in Wood|
|CSA-S347-14||Method of Test for Evaluation of Truss Plates Used in Lumber Joints|
|Grade of steel||Uncoated nominal plate thickness (mm)||Mean ultimate tensile strength (MPa)||Correction factor|
|Direction of load||Plate length||
Lateral resistance (MPa/plate)
Specific gravity (SG) = 0.42
|Ultimate lateral resistance, nu||Lateral slip resistance, ns|
|Parallel to grain||parallel to load||1.76||2.12|
|perpendicular to load||2.02||2.40|
|Perpendicular to grain||parallel to load||1.45||1.71|
|perpendicular to load||1.39||1.66|
|Roller diameter||610 mm (24 in.)|
|Roller feed speed||45.7 m/min (150 ft/min)|
|Ultimate strength modification factor, Kpu||0.82|
|Slip modification factor, Kps||0.79|
|Direction of load||Unit||Tensile resistance, tp|
|Parallel to plate length||N/mm/plate||263|
|Perpendicular to plate length||N/mm/plate||277|
|Angle (degree)||Shear resistance, vp (N/mm/plate)||Slots in plate axis|
This evaluation is issued by the Canadian Construction Materials Centre (CCMC), part of the Construction Research Centre at the National Research Council of Canada (NRC). The evaluation must be read in the context of the entire CCMC Registry of Product Assessments and the legislated applicable building code in effect.
The CCMC was established in 1988 on behalf of the applicable regulator (i.e., the provinces and territories) to ensure—through assessment—conformity of alternative and acceptable solutions to regional building codes as determined by the local authority having jurisdiction (AHJ) as part of the issuance of a building permit.
It is the responsibility of the local AHJs, design professionals, and specifiers to confirm that the evaluation is current and has not been withdrawn or superseded by a later issue. Please refer to the website or contact:
Canadian Construction Materials Centre
Construction Research Centre
National Research Council of Canada
1200 Montreal Road
Ottawa, Ontario, K1A 0R6
The NRC has evaluated the material, product, system or service described herein only for those characteristics stated 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 (i.e., AHJs, design professionals and specifiers). This evaluation is only valid when the product is installed in strict compliance with the stated conditions and limitations of evaluation and the applicable local building code. In circumstances where no applicable local building permit is issued and that no confirmation of compliance ‘for use in the intended field application’ is undertaken, this evaluation is null and void in all respects. This evaluation is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the NRC provides no endorsement for any evaluated material, product, system or service described herein. The NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this evaluation with respect to its compliance to the referenced code(s) and standard(s). 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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