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Simpson Strong-Tie Roof-to-Wall Connectors

Thank you for choosing Simpson Strong-Tie for your uplift connectors!

Steps to choose an uplift connector:

  1. Determine roof uplift capacity required.
  2. Determine species of wood being connected.
  3. Choose a connector using the table below.
  4. Determine if lateral loads are required in addition to uplift loads. If so, lateral loads are listed on the connector product pages (linked in the table below). See Simultaneous loading in multiple directions at the bottom of this page for reducing capacity for loading in multiple directions.
  5. Install connectors using number and size of fasteners shown in the installation instructions below.
  6. For additional connector options, see Truss/Rafter to Wood Double Top Plates.
Lumber Species Uplift Required Connector
Both members Southern Pine or Douglas Fir-Larch lumber 480 or less H2.5A

481- 745

H8

746 - 1000

MTS12

1001 -1340

H10A
1341 -1450

HTS20
One or both members Spruce-Pine-Fir or Hem-Fir Lumber 480 or less

H2.5A

481 - 565

H8
566 - 860

MTS12
861 - 1015

H10A
1016 - 1245

HTS20
roof-wall-connectors

Installation:

Connector Model No. Fasteners
To Rafter/Truss To Top Plate
H2.5A 5-8dx1½

5-8dx1½

H8 5-10dx1½ 5-10dx1½
MTS12 7-10dx1½ 7-10dx1½
H10A 9-10dx1½ 9-10dx1½

Alternate Fastening Using Strong-Drive® SD Structural-Connector Screws

Connector Model No. Fasteners Maximum Allowable Uplift
To Rafter/Truss To Top Plate Southern Pine or Douglas Fir Spruce-Pine-Fir or Hem-Fir

H2.5A

5–SD9112

5–SD9112

625

540

H8

5–SD9112

5–SD9112

820

705

MTS12

7–SD9112

7–SD9112

870

750

  1. Install the size and number of fasteners into the connector as specified in the tables above.
  2. Hurricane Ties are shown installed on the outside of the wall for clarity and assume a minimum overhang of 3½". Installation on the inside of the wall is acceptable. For uplift Continuous Load Path, connections in the same area (i.e. truss to plate connector and plate to stud connector) must be on same side of the wall.
  3. NAILS: 10d×1½=0.148" dia. by 1½" long, 8d×1½=0.131" dia. by 1½" long.
  4. See additional instructions to the installer.
  5. Install additional connectors to provide a continuous load path to the foundation. Read more information about the continuous load path.

Learn more about Strong-DriveĀ® SD Structural-Connector Screws.

Simultaneous loading in multiple directions:

roof-wall-simult-loading

When a connector is loaded simultaneously in more than one direction, the allowable load must be evaluated as shown below. Based on the designer’s method of calculating wind forces and the utilization of the tie in the structural system, the roof-to-wall connector may be subject to loads in up to three directions.

Roof-to-wall connectors (embedded truss anchors, seismic and hurricane ties and twist straps) that are subject to loading in more than one direction can be evaluated using the following:

The design load in each direction shall not exceed the published allowable load in that direction multiplied by 0.75.