CLT connection detailing.
CLT connection detailing.
CLT connection detailing.
CLT connection detailing.
Designing with mass timber all comes down to the connections. Usually, the simpler the connection detail, the easier it will be to install and the more cost-effective it will be for the project.
Because mass timber is so often used in exposed applications, connections go from serving purely structural needs to becoming part of the finished, visible design. For this reason, connection detailing needs to account for aesthetic considerations with heavy input from the architect and owner.
In this article we provide examples of common connection details. We always include connection detailing support as a standard offering on our projects.
Designing with mass timber all comes down to the connections. Usually, the simpler the connection detail, the easier it will be to install and the more cost-effective it will be for the project.
Because mass timber is so often used in exposed applications, connections go from serving purely structural needs to becoming part of the finished, visible design. For this reason, connection detailing needs to account for aesthetic considerations with heavy input from the architect and owner.
In this article we provide examples of common connection details. We always include connection detailing support as a standard offering on our projects.
Designing with mass timber all comes down to the connections. Usually, the simpler the connection detail, the easier it will be to install and the more cost-effective it will be for the project.
Because mass timber is so often used in exposed applications, connections go from serving purely structural needs to becoming part of the finished, visible design. For this reason, connection detailing needs to account for aesthetic considerations with heavy input from the architect and owner.
In this article we provide examples of common connection details. We always include connection detailing support as a standard offering on our projects.
Panel-to-panel connections in floor systems.
Panel-to-panel connections in floor systems.
Panel-to-panel connections in floor systems.
Panel-to-panel connections in floor systems.
When joining CLT panels to one another in floor panel applications, there are typically two options to consider: the spline joint, and the half-lap. Each are explored in more detail below.
When joining CLT panels to one another in floor panel applications, there are typically two options to consider: the spline joint, and the half-lap. Each are explored in more detail below.
When joining CLT panels to one another in floor panel applications, there are typically two options to consider: the spline joint, and the half-lap. Each are explored in more detail below.
Spline joint.
Spline joint.
Spline joint.
Spline joint.
In a spline joint, a notch is routed into the top of the CLT panel along the joint edge. A spline board is placed into the notch across two panels and screwed or nailed into place, fastening the panels together. A waterproof membrane is applied over the spline board.
In a spline joint, a notch is routed into the top of the CLT panel along the joint edge. A spline board is placed into the notch across two panels and screwed or nailed into place, fastening the panels together. A waterproof membrane is applied over the spline board.
In a spline joint, a notch is routed into the top of the CLT panel along the joint edge. A spline board is placed into the notch across two panels and screwed or nailed into place, fastening the panels together. A waterproof membrane is applied over the spline board.
Advantages: efficient use of panel material.
Advantages: efficient use of panel material.
Advantages: efficient use of panel material.
Disadvantages: longer installation time; more installation hardware; spline boards required.
Disadvantages: longer installation time; more installation hardware; spline boards required.
Disadvantages: longer installation time; more installation hardware; spline boards required.
Spline board material: laminated veneer lumber (LVL) - supplied by FPT.
Spline board material: laminated veneer lumber (LVL) - supplied by FPT.
Spline board material: laminated veneer lumber (LVL) - supplied by FPT.
Spline board dimensions: 1 1/16" x 5 15/16" (27mm x 150mm).
Spline board dimensions: 1 1/16" x 5 15/16" (27mm x 150mm).
Spline board dimensions: 1 1/16" x 5 15/16" (27mm x 150mm).
Half-lap joint.
Half-lap joint.
Half-lap joint.
Half-lap joint.
In a half-lap joint, complementary notches are routed into CLT panels along the joint edge. Panels are joined by overlapping the notches and placing screws through the panels, fastening the panels together. A waterproof membrane is applied over the joint line.
In a half-lap joint, complementary notches are routed into CLT panels along the joint edge. Panels are joined by overlapping the notches and placing screws through the panels, fastening the panels together. A waterproof membrane is applied over the joint line.
In a half-lap joint, complementary notches are routed into CLT panels along the joint edge. Panels are joined by overlapping the notches and placing screws through the panels, fastening the panels together. A waterproof membrane is applied over the joint line.
Advantages: faster installation time than spline joint; fewer screws than splint joint; no spline board required.
Advantages: faster installation time than spline joint; fewer screws than splint joint; no spline board required.
Advantages: faster installation time than spline joint; fewer screws than splint joint; no spline board required.
Disadvantages: less efficient use of panel material as panels overlap at each joint thereby increasing total volume required; requires heighted coordination of installation sequence.
Disadvantages: less efficient use of panel material as panels overlap at each joint thereby increasing total volume required; requires heighted coordination of installation sequence.
Disadvantages: less efficient use of panel material as panels overlap at each joint thereby increasing total volume required; requires heighted coordination of installation sequence.
Typical notch depth: 2" to 4"
Typical notch depth: 2" to 4"
Typical notch depth: 2" to 4"
Connection support.
Connection support.
Connection support.
Connection support.
Our pricing always includes connection detailing support based on diaphragm and connection design loads provided by the project's structural engineer of record. We also procure connection hardware as part of one complete mass timber supply package.
For projects in early-concept stages, we offer a flat-fee test-fit package to help the design team develop a basic structural approach and provide rough order of magnitude pricing to help inform project strategy. Read more about our design-support packages.
Our pricing always includes connection detailing support based on diaphragm and connection design loads provided by the project's structural engineer of record. We also procure connection hardware as part of one complete mass timber supply package.
For projects in early-concept stages, we offer a flat-fee test-fit package to help the design team develop a basic structural approach and provide rough order of magnitude pricing to help inform project strategy. Read more about our design-support packages.
Our pricing always includes connection detailing support based on diaphragm and connection design loads provided by the project's structural engineer of record. We also procure connection hardware as part of one complete mass timber supply package.
For projects in early-concept stages, we offer a flat-fee test-fit package to help the design team develop a basic structural approach and provide rough order of magnitude pricing to help inform project strategy. Read more about our design-support packages.
© Fort Point Timber Inc.
build@fortpointtimber.com
75 Federal St Ste 1300
Boston, MA 02110
© Fort Point Timber Inc.
build@fortpointtimber.com
75 Federal St Ste 1300
Boston, MA 02110
© Fort Point Timber Inc.
build@fortpointtimber.com
75 Federal St Ste 1300
Boston, MA 02110
© Fort Point Timber Inc.
build@fortpointtimber.com
75 Federal St Ste 1300
Boston, MA 02110