Types Of Attic Framing Construction

Building framing is divided into two broad categories heavy frame construction heavy framing if the vertical supports are few and heavy such as in timber framing pole building framing or steel framing.

Types of attic framing construction. Stick truss roof framing. Construction types definitions type i a fire resistive non combustible commonly found in high rise buildings and group i occupancies. Roof framing is one of those carpenter skills that appears quite complicated and indeed some roof designs are difficult. Or light frame construction light framing if the supports are more numerous and smaller such as balloon platform or light steel framing.

Shed roofs are usually the easiest type to connect to an existing roof when adding on. Roofs are basically five types. Adding different pitches and roof types will require more building materials and labor costs. Platform construction is much more common than balloon framing though balloon framing was employed in many two story houses before 1930.

Roof protection type i b fire resistive non combustible commonly found in mid rise office group r buildings. When choosing a roof first determine what type will and won t work for your area. Shed gable hip gambrel and mansard. Light frame construction using standardized dimensional lumber has become the dominant construction method in north america and australia due to.

These buildings are built with 2 x 4 or 2 x 6 studs and load bearing walls wood floor trusses or wood floor joist and wood roof framing. Another common design in the northeast is the saltbox which is a gable roof with one longer side. All construction types must be classified into the following all of which are explained extensively below. Two basic methods are used for framing a house.

Frame construction iso class i ibc type v joisted masonry iso class 2 ibc type iii ibc type iv light noncombustible iso class 3 ibc type iib masonry noncombustible iso class 4 ibc type iia. Type ii iia and iib. Type v wood frame construction is the most combustible of the five building types. Type i ia and ib the most stringent of building types when it comes to fire resistance rating requirements a type i building including its roof must be composed of noncombustible materials like concrete and steel.

Gambrel and mansard roofs offer more head height for attic rooms. Roof framing can be simple or complex depending on the roof. These are the weakest areas of the roof where water can pool and leak. Floor ceiling assembly 1 hr.

Overhangs hips and dormers add greatly to the complexity of the framing. The interior framing and exterior walls may be wood. A wood frame building is the only one of the five types of construction that has combustible exterior walls. Exterior walls 3 hr.

Structural frame 2 hr. With platform frame construction shown below walls sit on top of subflooring. Platform and balloon frame construction.