Timber Frame Truss Spans

Queen post timber truss.

Timber frame truss spans. Hand hewn or smooth finish is available. Above these components is a rack of common rafters. The reason for this is that the roof pitch span spacing species of wood and the location of the building can really affect the size of the timbers and geometry of the truss. Framing to truss connection engineering and connection hardware included.

Our standard wood species is free of heart douglas fir which yields minimal cracking. All trusses shown can be delivered fully assembled. For example an 8 10 metre span for a timber truss is quite a long one and can lead to problems. With a 50 foot truss this would definitely be the case.

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. 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. As the core component in any timber framing project trusses create the impressive grandeur and warmth associated with exposed beams and rafters. Modified king post trusses are are especially good for when more visual height is desired in the building plan.

Each truss style can be modified heavily but these classifications will fit most timber trusses in the post and beam world. Timber frame covered bridges. Standard stud construction typically requires only 3 studs. Spaced sheathing or 1x boards may be reduced slightly.

Structural t groove decking 1x 2x 3x or 4x in spruce or douglas fir. The basis of timber truss design concepts. 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. A timber frame truss roof with ridge beam purlins and common rafters is a stunning combination that creates visual interest and structural complexity.

Under 18 foot trusses have 8x8 and 6x8 main members. Trusses 18 foot and above have 8x10 and 6x10 main members. Allowable spans for 2x4 top chord trusses using sheathing other than plywood e g. Ideally it is better to subdivide this into a main frame of around 5 metres with a 2 5 metre aisle on each side.

The king post timber truss handles long spans and heavy load conditions. Trusses we offer multiple timber frame truss designs including the five basic timber frame trusses and variations of those truss systems.