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CLT Connections Design Guide

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CLT Connections Design Guide CLT Connections Design Guide MyTiCon Timber Connectors www.myticon.com | 1.866.899.4090 | [email protected] © 2019 by MyTiCon Timber Connectors Although this guide has been designed to provide accurate, state-of-the-art information in conformity with current standards of structural wood design and testing, anyone using this guide fully assumes all professional risks and responsibilities. Any suggestions for future revisions are greatly appreciated. The guide is effective March 1st, 2019 to Dec. 31st, 2019 and relies on information available at time of the development of the guide. Copyright © 2019 by MyTiCon Timber Connectors All rights reserved. This document or any portion thereof may not be reproduced or used in any manner whatsoever without the express written permission of the publisher. 2 TABLE OF CONTENTS GENERAL INFORMATION ..........................................................................................................................................6 General Overview of CLT Connections ............................................................................................................6 Wood Failure Modes and Reinforcing Solutions ..............................................................................................7 Fastener Line ...................................................................................................................................................8 Withdrawal Design in Narrow Panel Edge .......................................................................................................9 HOW TO USE THIS GUIDE .......................................................................................................................................10 About this Guide.............................................................................................................................................10 Design Table Explanation ...............................................................................................................................10 Rendering Explanation ...................................................................................................................................10 Notes To The Designer .......................................................................................................................................... 11 Adjusted Lateral Design Value Calculation (Z’): .................................................................................................... 11 Values Determined by Testing ...............................................................................................................................12 General Notes for Tested Reference Design Values (Ztest) .............................................................................12 Tested Reference Design Values (Ztest) List ...................................................................................................12 Lateral Connection Design ....................................................................................................................................13 List of Notations.....................................................................................................................................................14 Resource Information ............................................................................................................................................14 Certifications..........................................................................................................................................................14 Framing Systems ..................................................................................................................................................15 Balloon Framing ....................................................................................................................................................16 Post and Beam Framing........................................................................................................................................17 Platform Framing ...................................................................................................................................................18 PANEL TO PANEL CONNECTIONS .........................................................................................................................19 CLT Butt Joint Connection in Shear ......................................................................................................................20 CLT Lap Joint Connection in Shear .......................................................................................................................22 CLT Lap Joint Notch Reinforcement .....................................................................................................................25 CLT Lap Joint with Inclined Screws .......................................................................................................................26 CLT Lap Joint with Inclined Screws in Shear ........................................................................................................28 CLT Surface Spline Connection in Shear ..............................................................................................................30 PANEL TO BEAM CONNECTIONS ...........................................................................................................................34 CLT Panel to Beam Connection in Shear ..............................................................................................................35 CLT Panel to Beam Connection with Inclined Screws ..........................................................................................38 CLT Ledger Connection in Shear .........................................................................................................................40 CLT Ledger Connection with Inclined Screws .......................................................................................................42 CLT Ledger Connection Toe Screw .......................................................................................................................44 STEEL TO CLT CONNECTIONS ...............................................................................................................................46 CLT Panel with Steel Side Plate in Shear .............................................................................................................47 CLT and Steel Plate with Inclined Screws .............................................................................................................50 HARDWARE SECTION ..............................................................................................................................................52 ASSY® Ecofast ..............................................................................................................................................52 ASSY® SK ......................................................................................................................................................53 ASSY® Kombi .................................................................................................................................................55 ASSY® VG CSK ............................................................................................................................................56 ASSY® VG Cyl ................................................................................................................................................58 Bits - AW® Drive ..............................................................................................................................................59 45° Washer ....................................................................................................................................................59 DETAILING SECTION ................................................................................................................................................60 Spacing and Edge Distance Requirements ...................................................................................................60 Geometry Requirements in CLT for ASSY® Screws .......................................................................................60 Geometry Requirements in CLT for ASSY® Scews with Pre-Drilled Holes ....................................................61 Geometry Requirements for Staggered ASSY® Screws ................................................................................61 Geometry Requirements for ASSY® Screws ..................................................................................................62 Geometry Requirements for ASSY® Screws with Pre-drilled Holes ...............................................................62 ASSY® Allowable Fastener Tensile Strength ..................................................................................................63 ASSY® Adjusted Fastener Torsional Strength ................................................................................................63 Pre-drilling Recommendations .......................................................................................................................63 3 Brock Commons University of British Columbia 4 “Build Strong, General Information p. 6 - 9 Build Sustainable, Build the Future” How to Use this Guide p. 10 - 18 MyTiCon is a specialty
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