Roof Framing 101 Pdf

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.

Roof framing 101 pdf.

Introduction to prescriptive roof framing 3 prescriptive roof construction the international residential code irc and the international building code ibc set out specific guidelines within which conventional light frame wood structures may be built without the need for engineering analysis of each component. When you fi nd it in the text write down the defi nition. If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. All of the necessary cuts for a particular rafter can be laid out with these two squares.

4 12 through 9 12 are the most common pitches. Ive had a construction master pro as an app for some time but this dvd unlocks its full power. Shed gable hip gambrel and mansard. In the u s it is defined by the rise in inches to a 12 run.

Professional tradesmen use rafter and framing squares to save time on roof construction projects. Roof framing is the last major framing activity in the construction of a house. I just received and watched roof framing 101 volume 1 0. Framing is the process of connecting building materials together to create a structure.

Framing errors 10 91 installing plywood sheathing toe nails are stronger when adding up the weight of snow of a sloping roof use the horizontal run of the roof since the same amount of snow would accumulate on a perfectly flat roof. It was no coincidence that the other contractor ran out of money and had to. Definite value for the money. Framing is a construction system.

Roofs are basically five types. Figure 2 2 roof framing terms. But by the time his house was framed mine was shingled wired and plumbed. Floor framing on top wall framing in middle roof framing on bottom t was a coincidence that another con tractor and i began framing houses next door to one another on the same day.

This reference guide will provide a basic knowledge of. Construction how to roofing march 27 2008 sonia eht explores some basic roof framing techniques from layout to installation. Line length is the hyptenuse of the triangle whose. I wish i was taught this at college years ago.

Roof framing is one of those carpenter skills that appears quite complicated and indeed some roof designs are difficult. Studs plates headers rafters girders flooring and joists are all terms used to identify different components in framing. Chapter 17 reading guide 465. The code also allows you to apply a slope reduc tion factor to account for snow blowing or.

This is known as prescriptive. Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is. Shed or lean to roof gambrel roof mansard roof.