King Post Roof Truss

Unlike a king post the queen post truss has two central vertical posts two rafters and a beam.

King post roof truss.

We will be going over how to do a king post truss on a shed with a 4 12 roof but it can be done on any type of pitch. A king post truss is a simple triangular gable truss with a center brace known as the king truss. Trusses are elements where its entire member takes either only compression or tension member are not in bending. In a variation known as a king bolt rod truss.

King posts were used in timber framed roof construction in roman buildings and in medieval architecture in buildings such as parish churches and tithe barns the oldest surviving roof truss in the world is a king post truss in saint catherine s monastery egypt built between 548 and 565. A run of 12 12 is a 45 degree angle. A king post truss has two principal rafters a tie beam and a central vertical king post. A 4 12 roof is around 19 degrees.

Oak trusses by otf builders. Roof trusses have revolutionized roof framing. The king post truss is also used for simple roof lines and short span bridges. The top two diagonal pieces that serve as rafters are known as the upper cords.

Many building codes do not allow a roof on a shed to be less than 3 12 as flatter roofs are more prone to leaks and snow damage. The simplest of trusses it is commonly used in conjunction with two angled struts. The king post roof truss is the simplest of the trusses because of its simple composition. Choose the right truss type.

Buy a quality built oak truss from as little as 1165. The truss has four main parts. It is more lightweight than the king post and can be used to cover larger areas. With some 70 years experience in producing bespoke roof trusses and other timber frame structures our skilled technicians and manufacturing processes lend themselves only to the very very highest quality of workmanship and.

It is used in aircraft construction. Raised offset tied curved 3m 7m options. It is often used in simple roof trusses such as in the shed porch and garage. The king post is normally under tension and requires quite sophisticated joints with the tie beam and principal rafters.

In a nutshell it s made up of a central vertical post called the king post two rafters meeting at the apex and a tie beam or the horizontal base. Our douglas fir king post trusses are hand made to order by our team of craftsman at our workshops in shrewsbury. King posts also appear in gothic revival architecture queen anne style architecture and occasionally in. A king post has a central vertical post as used in architectural or bridge designs working in tension to support a beam below from a truss apex above.