Simpson Strong-Tie - Connectors and Fasteners for Cross-Laminated Timber Structures - Design and connection solutions

Sep 14, 2026

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Simpson Strong-Tie provides connectors and fasteners for cross-laminated timber (CLT) structures, positioning screws as crucial connection elements for mass timber construction. The guide introduces general company and engineering support tools, then moves into calculation and design connections, timber grades, and key building performance topics such as acoustics, seismic design considerations, and fire resistance. It organizes practical solution pathways for connections between CLT and concrete, CLT walls, floors, and beams, including in-plane connections and external insulation interfaces.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages236

Reading Time9 h 55 min

AccessFree to download

General Information

Solution Finder

Company Information

Online Tools & Support for Engineers

The Simpson Difference

Calculation and Design Connections

Timber Grades

About Mass Timber and CLT

Acoustics and Buildings

Seismic Activity and Timber Constructions

Fire Resistance

CLT Connection Solutions

CLT Wall to Concrete Solutions

CLT Wall to CLT Wall Solutions

CLT Wall to CLT Floor / Ceiling Connection Solutions

CLT Floor to CLT Floor Solutions (in plane connection)

CLT Floor to CLT Wall Solutions

CLT Floor to Glulam Beam Solutions

CLT Floor to Steel Profile Solutions

External Insulation to CLT Wall Solutions

Fastener Features

Connectors and Fasteners for Cross-Laminated Timber Structures [C-CLT-EU-2023 | strongtie.eu](C-CLT-EU-2023 | strongtie.eu) In Odense, Denmark, the Cobot Hub project showcased the innovative use of CLT and Simpson Strong-Tie's structural screws as a crucial connection element in cross-laminated timber (CLT) construction. Scan the QR code to watch the video Bringing a Legacy of Service and Innovation to CLT With over 60 years of leadership in structural engineering, Simpson Strong-Tie is proud to offer smart solutions for CLT and mass timber. Embracing the challenge, we’re leveraging our dual passions of service and innovation to meet this industry’s unique demands. [Simpson Strong-Tie | strongtie.eu](Simpson Strong-Tie | strongtie.eu) Simpson Strong-Tie® Connectors and Fasteners for Cross-Laminated Timber Structures Table of Contents General Information General Information | Solution Finder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Company Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Online Tools & Support for Engineers . . . . . . . . . . . . . . . . . . . . . . . 10
The Simpson Difference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Calculation and Design Connections. . . . . . . . . . . . . . . . . . . . . . . . 12
Timber Grades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
About Mass Timber and CLT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Acoustics and Buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Seismic Activity and Timber Constructions . . . . . . . . . . . . . . . . . . . 26
Fire Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
CLT Wall to Concrete | | --- | | CLT Wall to Concrete Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
CLT Panel to Concrete Slab Solutions. . . . . . . . . . . . . . . . . . . . . . . 38
Hold Downs with Angle Brackets . . . . . . . . . . . . . . . . . . . . . . . . 38
Comparison Between Hold Downs and Angle Brackets . . . . . . . 43
Angle Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Tension Plates and Anchor Plates . . . . . . . . . . . . . . . . . . . . . . . . 50
Anchor Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
CLT Panel to Concrete Slab with Interlayer Solutions . . . . . . . . . . . 52
Hold Downs with Angle Brackets . . . . . . . . . . . . . . . . . . . . . . . . 54
Angle Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Screws and Through-bolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Tension Plates and Anchor Plates . . . . . . . . . . . . . . . . . . . . . . . . 63
Anchor Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
CLT Wall to CLT Wall (L-and T-Connections) | | CLT Wall to CLT Wall Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Structural Angle Brackets for 90° Corner / T-Connection . . . . . . . . 70
Structural Fasteners for 90° Corner / T-and L-Connection . . . . . . . 76
Structural Fasteners for Corner Connections Other Than 90° . . . . . 87
CLT Wall to CLT Floor | | CLT Wall to CLT Floor / Ceiling Connection Solutions . . . . . . . . . . . 91
Structural Angle Brackets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Enhanced Structural Angle Bracket. . . . . . . . . . . . . . . . . . . . . . . . . 98
Structural Fasteners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Concealed Connection 107
Acoustic Solutions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
CLT Floor to CLT Floor (in plane Connection) | CLT Floor to CLT

FAQs

What product types does the document focus on for CLT structures?

It focuses on Simpson Strong-Tie connectors and fasteners for cross-laminated timber, highlighting structural screws as crucial connection elements in CLT construction.

What kinds of engineering topics are covered in the general information section?

The guide covers calculation and design connections, timber grades, mass timber and CLT background, plus performance topics including acoustics, seismic activity, and fire resistance.

Which connection scenarios are covered in the solution sections?

It covers multiple interfaces such as CLT to concrete, CLT wall to CLT wall, CLT wall to CLT floor/ceiling, CLT floor to CLT floor (in-plane), and also CLT floor to glulam beams, steel profiles, and external insulation to CLT walls.

Sep 14, 2026

Upload by Mali