Timber Frame Truss Spans

Trusses we offer multiple timber frame truss designs including the five basic timber frame trusses and variations of those truss systems.

Timber frame truss spans.

Trusses 18 foot and above have 8x10 and 6x10 main members. Framing to truss connection engineering and connection hardware included. Queen post timber truss. Ideally it is better to subdivide this into a main frame of around 5 metres with a 2 5 metre aisle on each side.

With a 50 foot truss this would definitely be the case. There is a hierarchy of timber framing at work here with trusses supporting the ridge and purlin beams. This truss used in conjunction with heavy timber attic or collar tie trusses works well in a loft area a great room or for an entryway. Modified king post trusses are are especially good for when more visual height is desired in the building plan.

Our standard wood species is free of heart douglas fir which yields minimal cracking. A timber frame truss roof with ridge beam purlins and common rafters is a stunning combination that creates visual interest and structural complexity. For example an 8 10 metre span for a timber truss is quite a long one and can lead to problems. As the core component in any timber framing project trusses create the impressive grandeur and warmth associated with exposed beams and rafters.

Allowable spans for 2x4 top chord trusses using sheathing other than plywood e g. The size of a timber truss is an important part of designing a building and while there are no set maximum sizes there are some best practices. Each truss style can be modified heavily but these classifications will fit most timber trusses in the post and beam world. Flexible design with span pitch and on center spacing.

Usage of timber frame trusses is highly dependent on the houses or structures square footage roof lines both pitch and context of other rooflines overall spans design preferences and structural requirements. Structural t groove decking 1x 2x 3x or 4x in spruce or douglas fir. Standard stud construction typically requires only 3 studs. Trusses must be designed for any special loading such as concentrated loads from hanging partitions or air conditioning units and snow loads caused by driftingnearparapetorslide offfromhigherroofs.

Timber frame covered bridges. Hand hewn or smooth finish is available. Under 18 foot trusses have 8x8 and 6x8 main members. All trusses shown can be delivered fully assembled.

The king post timber truss handles long spans and heavy load conditions. Above these components is a rack of common rafters.