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HM9 Hurricane Tie

The HM9 holds the rafter or truss on both sides for higher uplift applications with concrete or masonry walls. The optional nailing connects roof blocking to the top plate with slots that allow field bending up to a maximum pitch of 6:12 to accommodate angled blocking. These U-shaped hurricane ties provide faster installation than using two single-sided straps.

Key Features

  • Provides a connection between the truss or rafter and the wall of the structure that helps resist wind and seismic forces
  • Provides high uplift and lateral capacity
  • The embossments add stiffness in crucial areas for improved performance

Material

  • 18 ga.

Finish

  • Galvanized (G90)

Installation

  • Use all specified fasteners; see General Notes
  • Connectors attached using Strong-Drive® SDS Heavy-Duty Connector screws and hex-head Titen Turbo™ screws
  • Products shall be installed such that the Titen Turbo screws and Titen HD® screw anchors are not exposed to the exterior environment
  • Attach to grouted concrete block with a minimum one #5 rebar horizontal in the course
  • Hurricane ties do not replace solid blocking

Related Literature

Wood Construction Connectors 2024-2025
C-C-2024
A catalog including new product information as well as any applicable specification and installation instructions for wood-to-wood and wood-to-concrete structural connectors.
Catalog
Conectores para la construcción con madera 2021–2023
C-C-2021SP
El catálogo incluye información sobre nuevos productos, así como especificaciones e instrucciones de instalación aplicables para conectores estructurales de madera a madera y de madera a concreto.
Catalog
High Wind Guide
F-C-HWG23
A comprehensive guide to help designers select the most appropriate connections for high-wind regions.
Product Guide
High-Wind Retrofit Solutions for Homeowners
S-C-HWRGUIDE22
A flier providing recommendations on reducing the risk of hurricane- and other wind-induced damage to existing homes.
Flier
Connectors for Florida Hurricane Mitigation Retrofit When Re-Roofing
T-C-FLCODE23
A technical bulletin explaining how to achieve sufficient uplift capacity for roof-to-wall connections, with references to the 7th edition (2020) of the Florida Building Code.
Technical Bulletin

Product Information Table

Fastener Production Information and Stuff & Things
Model No. Ga. W (in.) L (in.) Product Includes Coating/Material Packaging Qty.
HM9KT 18 1 9/16 6 1/4 (20) HM9 connectors, (80) 1/4 in. x 1-1/2 in. Strong-Drive SDS Heavy-Duty Connector screws and (100) 1/4 in. x 2-1/4 in. Titen Turbo screws Zinc Galvanized, G90 20

Load Tables

Model No. Ga. W
(in.)		 L
(in.)		 Fasteners (in.) DF/SP
Allowable Loads		 SPF/HF
Allowable Loads
To Rafter / Truss To GFCMU To Concrete Uplift Lateral
(160)		 Uplift Lateral
(160)
(160) F1 F2 (160) F1 F2
HM9KT 18 1 9/16 6 1/4 (4) 1/4 x 1 1/2 SDS (5) 1/4 x 2 1/4 Titen Turbo (5) 1/4 x 1 3/4 Titen Turbo 760 670 190 760 670 190
Footenotes
  1. Loads have been increased for wind or earthquake loading, with no further increase allowed. Reduce where other loads govern.
  2. Concrete shall have a minimum compressive strength of f'c = 2,500 psi.
  3. Grout-filled CMU (GFCMU) shall have a minimum compressive strength of f'm = 1,500 psi.
  4. The HM9KT is a kit with (20) HM9 connectors packaged with Strong-Drive® SDS Heavy-Duty Connector screws and 2 1/4" Titen Turbo screws. (1 3/4" Titen Turbo screws for concrete installations sold separately.)
  5. Nail dimensions in the table are diameter by length. Titen Turbo screws are Simpson Strong-Tie concrete and masonry screws (hex-head model required). For additional information, see Fastener Types and Sizes Specified for Simpson Strong-Tie Connectors.

Moisture barrier not shown (typ.)

HM9 Attaching Truss to Masonry
HM9 Attaching Truss to Masonry

Code Reports & Compliance

Drawings

PDF DWG DXF RFA IFC SAT

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