Timber Frame Construction Details

Timber Frame Construction Details Finding the right timber frame construction detail is pivotal for your timber frame project whether it is for a commercial or residential building.  We have created this site to provide you and the industry a resource to find these construction details.  We welcome everyone to share their timber frame construction details here and comment on the ones we currently have.

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Timber Frame Post Base

Welded Steel Knife Plate to Timber Post

There are several methods for securing a timber post to a solid poured  concrete pier, slab or foundation.  In this example a flat piece of plate steel with rebar fingers is embedded in to the concrete.  Then the elevated post base is attached to the timber post through a knife plate which is held together […]

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mortise and tenon with all thread4

Mortise and Tenon with an All Thread Rod

Often we find ourselves with a large amount of tension in some connections involving the roof loads and it is necessary to add some steel instead of relying on wooden pegs to do the job.  This is not just a new age practice but one that has been around for a long time.  An easy […]

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Peak Joinery Detail

Rafter to Rafter Mortise and Tenon Connection

There are a few ways to join two rafters together at the peak, one way that we have illustrated before is the tongue and fork connection.  In this detail a simple mortise and tenon is used to simplify the process of cutting the joint.  Please note that the tenon and mortise are notched back from […]

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Hardware Timber Frame Spline Joint

Spline Joinery

It is often the case when you have two or more plates or beams coming together into a post to use a spline in place of a tenon.  The thought process being is if you put a tenon on the end of the beams you risk taking out too much “meat” out of the post […]

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Timber Frame Roof Joinery

Tie Beam to Plate Tying Joint

As its name implies this tying joint, joins together a tie beam, plates, rafter and posts all in a compact structurally sound way.  It utilizes a spline to tie the plates together and traditional mortise and tenon joinery to complete the rest of the joinery.

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Rafter Tie Beam Connection5 copy

Rafter to Tie Beam Connection

This strong and simple to cut joint joins a rafter to a tie beam in a wide variety of truss combinations.  The notch is what creates the strength in this connection.  It uses the roof pitch on the inside edge and a 45 degree angle on the outside of the notch.

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Scarf Joint Featured

Stop Splayed Scarf Joint

A scarf joint is used to create longer timbers for use in plates, beams, rafters and posts when you cannot find a long enough timber to span the distance you require. The stop splayed scarf that is displayed here is extremely common and can be fastened together with pegs, all-thread with nuts and washers or […]

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Up Close Hexagon Timbered Pavilion

Hexagonal Frame Plate to Rafter Connection

In a hexagonal timber frame where the plates around the perimeter join the with principal rafter is a bit tricky from a engineering stand point. This is just one solution and in this case a steel post was used instead of a timber post. After the last detail I thought a follow up to the […]

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Hexagonal Timbered Boss Pin Detail

Hexagonal Heavy Timber Frame Boss Pin Detail

While just housings and rafters to cut this detail would certainly challenge any timber framer. The central post is typically called a boss pin and it is used when you have several hips and valley coming together at the some spot. This details comes from a hexagon frame and has the lower struts diving into […]

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Upper Strut Timber Detail Isometric

Upper King Post Strut to Rafter Detail

While joining a strut from a king post or bottom chord is a simple timber frame joint to cut it is important to look at the connection details.  Here we use a 3/4″ housing, and because we are using white oak a 1 1/2″ tenon and two 1″ pegs to tie everything together.

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