[CCMC 11996-L] CCMC Standard compliance evaluation
From: National Research Council Canada
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The “MT20” truss plate is manufactured from 20 gauge steel sheet that meets the minimum strength and yield requirements of ASTM A653, SS Grade 40 SQ275 and galvanized with G90 zinc coating per ASTM A924/A924M. The “MT20” truss plate has an uncoated nominal thickness of 0.91 mm and is stamped with 0.0124 teeth per square mm. The teeth are approximately 8.3 mm in length.
This evaluation is valid only for products produced at the following plant:
|Product name||Manufacturing plant|
|Bradford, ON, CA|
|MT20||Product evaluated by the CCMC|
Product evaluated by the CCMC Indicates that the product from this manufacturing facility has been evaluated by the CCMC
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 (MPa)||Correction factor|
|Direction of load||
Specific strength (MPa/Plate)
Specific gravity (SG) = 0.42
|Ultimate lateral resistance, nu||Lateral slip resistance, ns|
|Load parallel to grain, plate length parallel to load||2.24||2.37|
|Load parallel to grain, plate length perpendicular to load||1.80||2.17|
|Load perpendicular to grain, plate length parallel to load||1.28||1.66|
|Load perpendicular to grain, plate length perpendicular to load||1.34||1.62|
|Roller diameter||Roller feed speed||Ultimate strength modification factor, Kpu||Slip modification factor, Kps|
|610 mm (24 in.)||45.7 m/min (150 ft/min)||0.69||0.83|
|Direction of load||Unit||Limit states design tensile resistance, tp|
|Plate length parallel to load||N/mm/plate||174|
|Plate length perpendicular to load||164|
|Limit states design|
|Angle (degree)||Shear resistance, vp (N/mm/plate)||Slots in plate axis|
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It is the responsibility of the user to confirm that the assessment they are using is current and has not been withdrawn or superseded by a later version on the CCMC Registry of Product Assessments.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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