Roof design roof design is a major feature of a houses architectural style. Cad details are available in dwg, dwf, dxf and pdf format. Wall framing 31 requirements 31 platform construction 31 balloon construction 33 window and door framing 34 endwall framing 36 interior walls 38 lath nailers 39 chapter 7. Wcd1 details for conventional wood frame construction. This support is usually a beam which is secured under the rafters at a point half way between the ridge and the wallplate. Architects, engineers, builders and real estate developers all require detailed drawings to understand how to construct any roof. Roof structures roofs section1 module 3 sheet 12section double roofs a double roof is a roof whose rafters are of such a length that they require an intermediate support. Wood posts should be solid, pressuretreated, and not. Roofs must also be strong enough to withstand high winds.
Building framing systems and best practices building framing. A roof framing plan may be included in the set of building plans. You will then have to choose between two very different types of roof framing stick framing vs. Learn the art of woodworking using these stepbystep woodworking plans. I drew two roof plans to use in the actual framing process. Roof slope and rigidness are for shedding water and bearing any extra additional weight. The first is a schematic drawing, below showing the position of plates, ridges, rafters, etc. But by the time his house was framed, mine was shingled, wired, and plumbed. Building framing systems and best practices building. While most home builders will outsource the construction of roofing trussesthe rafter supports of the roof itselflearning to frame a roof yourself is one of the true arts of carpentry, and a basic primer is covered below. The first approach to achieving a strong, durable struc. Tiedown fixings tiedown fixings are used to resist uplift and shear forces lateral loads in floor framing, wall framing and roof framing. How to build leanto addition free pdf leanto roof plans. Parts of a roof the main structural parts of a roof are ceiling joists, ridge board, jack rafter, hip rafter, common rafters, creeper rafters, raking plates, out riggers and noggings or last rafter overhang.
Materials such as the roofing material, vents and their location. Some roofs actually slope in several directions, ensuring optimal water runoff. Timber frame modern 3 plan figure 10 19 example of a structural floor framing plan for shed roof framing plan pdf plans more framing plan. Rafters act more like the top chord of a roof truss than as a roof joist.
The rise, or height of the roof at its peak, is the altitude of the triangle. What is the difference between roof framing, roofing plan. Roof section once all the walls are built, you will start working on the roof. Part of a framing plan for a hip roof is shown in figure 183. In a rafter roof, all of these components are required to provide a stable roof. The rafters carry the applied loads to the exterior walls. Roof framing plans roof framing plans are usually required for complicated residential roof shapes and for most commercial projects. Plan view this is a plan view of a roof that contains various types of rafters. Floor plans, foundation plans, electrical plans, elevation plans, wall fr aming plans, roof framing plans, cabinet details, foundation details, wall section details.
The framing of a basic gable roof is based on a rightangle triangle, and the various roof framing components fit the triangle. One method of sizing the connection between the roof framing and the exterior wall is provided in example 9. Studs, plates, headers, rafters, girders, flooring and joists are all terms used to identify different components in framing. You will use 2x4 stud to build 14 roof rafters each side with a diameter of 9 feet and 6 inches for each. To view a cad detail, you will need a cad design program or a cad viewer program. Framing a roof is the last step in framing new construction. Structural design for residential construction presentation 4. Refer to wood framing general notes for typical headers. Demonstration homes provides builders with practical information and experience, based on the actual construction of two steel framed homes.
Therefore, it is recommended to have additional help while working on the roof. Roof plans a roof plan is used to show the shape of the roof. Figure 28 anchoring floor system to concrete block foundation wall. Mar 27, 2008 the framing of a basic gable roof is based on a rightangle triangle, and the various roof framing components fit the triangle. Because all the frames resist lateral loading, the steel deck. Transfers the load of the roof through the raftersto walls below. Flat roofs are always built at a slight incline, at least 18 inch per foot. Roof plan a roof plan is commonly drawn to a scale of 18 inch per foot or 116 inch per foot. The plan reader should be familiar with roof styles and the rafter components of these designs to calculate roof framing materials and framing labor. This plan, like the model, gave me a general idea of how the roof the structural model, above shows just how complicated the roof is.
Conventional floorroof framing versus trussed floorroof framing systems options. Roof framing in this chapter, we will introduce you to the fundamentals of roof design and construction. A gable roof has a ridge at the center and slopes in two directions. Ceiling and roof framing 12 roof designs 72 manufactured wood roof trusses 73, ceiling joists and rafters 78.
Prescriptive solutions for the connection of the roof framing to the wall top plates are available in building codes and wind design standards. Most plans include list of materials needed to build a leanto addition. When roofs collide 2 will beemer historic american roof trusses 12 ii. The point at which all the rafters are attached to. This design also gives a greater ceiling height if required. Ceiling and roof framing 40 ceiling joists 40 flush ceiling framing 42 post and beam framing 42 roof slopes 44 flat roofs 45 pitched roofs 45. Complete materials list available, easy to follow plans. You can do this with a foam layer that exactly fits your roof. Porch construction drawings may be used in conjunction with site plan for permit submittal rafter size and spacing. Dec 17, 2019 framing a roof is the last step in framing new construction.
As you can see, the initial plan for framing your roof needs to take into account several key variables, such as the shape of the roof and any relevant community building codes. Steel framing guide a n e a s y t o u s e g u i d e f o r s t e e l f r a m e c o n s t r u c t i o n 5 prefabricated systems walls, floor panels and roof trusses of cfs that are built in a factory will require engineered drawings and layouts for building code approval, just like any other premanufactured. The primary object of a roof in any climate is protection from the elements. A roof plan shows the shape of the roof, as well as roofing materials, underlayment and location of vents. Roof framing and drainage plans will be discussed in chapter 30. Roof framing guidelines calculating load on a king truss to design a rafterjoist king truss to support the end of a structural ridge, the engineer must calculate the tension force, t, that will be induced in the joist.
The framing consists of a steel roof deck supported by joists between transverse gable frames. When you locate the detail you want, just click one of the four file format buttons to download it to your computer. When framing a flat roof, you will need to create a slight incline. This guide uses nominal member size, but it is important to note that the designer must apply the.
Modern construction methods make use of another type of roof structure and this is known as trussed. In many cases with purchased house plans, the details of the roof construction, including rafter design, are included. A roof plan is typically drawn on the same sheet as the exterior elevations. The mezzanine represents both an additional load and additional strength and stiffness. The best roof framing plan drawings free download pdf and video.
Please use your judgment and common sense and go over the list to make sure everything looks good. Nearly all roofs are framed using one of two methods. Floor framing on top wall framing in middle roof framing on bottom t was a coincidence that another contractor and i began framing houses next door to one another on the same day. Roof framing can be simple or complex, depending on the roof. This will help you create a flat roof framing plan. Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is. You will use 2x4 stud to build 14 roof rafters each side with a. Framing a roof berlinboylston regional school district. A roof framing plan indicates the layout for rafters, joists, bar joists, trusses, decking details, roof framing members, and other roofing details. Please follow links provided below to open free detailed pdf plans for 8 wide, 10 wide, 12 wide and 16 wide leanto overhangs.
Overhangs, hips, and dormers add greatly to the complexity of the framing. Roof plan a roof framing plan shows size and direction of the construction members that are required to. Apr 02, 2020 roof framing can be simple or complex, depending on the roof. The roof framing plans show the construction of the rafters used to span the building and support the roof. The roof framing must be done as specified on the roof framing plan or you will not pass a framing inspection.
First, the tributary roof load flowing to the end of the ridge beam is calculated, then this point load, p, is. The roof and mezzanine framing plans are shown in figure 6. You will then have to choose between two very different. For some types of roofs a roof drainage plan may also be drawn.
This report, steel framed residential construction. Would the framing labor and material for a steep pitch victorian roof be the similar to a colonial. The plan that is drawn of the roof area may be either a roof plan or a roof framing plan. Wind loads above, figure 1609, basic wind speed 3second gust, 33 feet above ground, exposure c ibc 2003 zone v 30 mph 1 2 3 70 80 90 western mass. Flat roof 2 car garage plans with one story 4801ftsp 26 w. Parts of a roof a ridge board is a horizontal member of the roof frame.