[CCMC 13326-L] CCMC Standard compliance evaluation

CCMC number:

13326-L

Status:

Active

Issue date:

2008-08-05

Modified date:

2023-11-08

Evaluation holder:

Simpson Strong-Tie Canada, Limited

11476 Kingston Street
Maple Ridge BC V2X 0Y5
Canada
Website: www.strongtie.com
Telephone: 604-465-0296

Product name:

AS-20 Truss Plate

Criteria:

CSA-O86-14, "Engineering Design in Wood"
CSA-S347-14, "Method of Test for Evaluation of Truss Plates Used in Lumber Joints"

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.

Product information

Product name

AS-20 Truss Plate

Product description

The product is manufactured from a 20 ga steel sheet that meets the minimum strength and yield requirements of ASTM A 653/A 653M, “Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process,” Grade SQ275 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.” The product has an uncoated nominal thickness of 0.904 mm and is stamped with 0.0124 teeth per square mm. The teeth are approximately 9.5 mm in length.

Manufacturing plants

This evaluation is limited to products produced at the following plants:

Product name	Manufacturing plants
Product name	Columbus, OH, US	McKinney, TX, US	Stockton, CA, US
AS-20 Truss Plate	Product evaluated by the CCMC	Product evaluated by the CCMC	Product evaluated by the CCMC

Product evaluated by the CCMC Indicates that the product from this manufacturing facility has been evaluated by the CCMC

Technical information

This evaluation is based on demonstrated conformance with the following criteria:

Evaluation requirements
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

Table 1. Results of testing the ultimate tensile strength of the plate on the product
Grade of steel	Uncoated nominal plate thickness (mm)	Mean ultimate tensile strength (MPa)	Correction factor
SQ275	0.904	391	0.969

Table 2. Results of testing the lateral resistance of the teeth (hydraulic press) on the product
Direction of load	Lateral resistance (MPa/plate) Specific gravity (SG) = 0.42
Direction of load	Ultimate lateral resistance, n_u	Lateral slip resistance, n_s
Load parallel to grain, plate length parallel to load	2.35	2.16
Load parallel to grain, plate length perpendicular to load	2.01	2.07
Load perpendicular to grain, plate length parallel to load	1.72	1.70
Load perpendicular to grain, plate length perpendicular to load	1.72	1.82

Table 3. Results of testing the lateral resistance of teeth (hydraulic press) on the product
Direction of load	Lateral resistance (MPa/plate) Specific gravity (SG) = 0.47
Direction of load	Ultimate lateral resistance, n_u	Lateral slip resistance, n_s
Load parallel to grain, plate length parallel to load	2.56	2.38
Load parallel to grain, plate length perpendicular to load	2.30	2.31
Load perpendicular to grain, plate length parallel to load	1.85	1.88
Load perpendicular to grain, plate length perpendicular to load	1.86	2.09

Table 4. Roller press modification factors
Roller diameter	457 mm (18 in.)
Roller feed speed	37.3 m/min (122.5 ft./min)
Ultimate strength modification factor, K_pu	0.74 (SG = 0.42)	0.82 (SG = 0.47)
Slip modification factor, K_ps	0.77 (SG = 0.42)	0.83 (SG = 0.47)

Table 5. Results of testing the tensile strength of plate on the product
Direction of load	Limit states design tensile resistance, t_p
Units	N/mm/plate
Plate length parallel to load	167
Plate length perpendicular to load	165

Table 6. Results of testing the shear strength of the plate on the product
Angle (degree)	Limit states design for shear resistance, v_p(N/mm/plate)	Slots in plate axis
0,180	110	⊥
30T	127	//
30C	99	⊥
60T	151	//
60C	87	⊥
90	86	//
120T	100	⊥
120C	90	//
150T	125	⊥
150C	85	//

Legend for symbols:

⊥: Slots perpendicular to plate, long dimension

//: Slots parallel to the plate, long dimension

C: Compression

T: Tension

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

Une version française de ce document est disponible.
In the case of any discrepancy between the English and French version of this document, the English version shall prevail.

Copyright

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.