You can also calculate roof pitch even without using a roof slope calculator.
Roof pitch for a blatter roof.
Examples of extreme slopes range from 1 4 12 almost flat to 12 12 sloping down at a perfect 45 degree angle.
They have a pitch ranging from 4 12 to 9 12.
For most home styles roof pitches fall in a range 4 12 a moderate slope up to 8 12 fairly steep.
The ibhs recommends a 4 to 6 pitch roof.
This 6 12 roof pitch factor can also be described in other measures.
This is for the top level of a 3 story building that is 26 by 64.
This numerical figure is significant as not everybody can understand the technical measurements.
One engineer recommends a 12 12 pitch for the new roof while another recommends a 7 12 pitch.
One medium to describe the roof pitch is in 12 runs.
A roof of pitch 7 12 30 is manageable but caution should be taken.
For every 12 horizontal feet the roof changes 8 feet in vertical height.
Conventional roofs are the easiest to construct and you can walk on them safely.
High pitched roofs often need extra fasteners and their pitch can be as high as 21 12.
The easiest way to determine the pitch is by using a special tool called a pitch finder which is placed on either the top of the roof on a gable end soffit or in the attic under a rafter.
In other words it can be expressed as numerical measure of steepness of the roof.
A roof pitch of 6 12 26 5 or less is considered easily walkable and no extra precautions are required.
Pitches between 8 12 and 10 12 33 40 are also considered walkable but it is not advisable and if you have to walk on these roofs extreme caution should be taken.
The roof pitch would be described as a 6 12 pitch.
That is to say the roof pitch expressed as a ratio tells you how many inches the roof rises for every 12 inches of depth.
For example if the pitch of the roof is 6 then it is written as 6 12.
Typical roof pitch is actually the measure of the roof s slope expressed in ratio.
On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise.
Another way to find the pitch is to use a level and framing square from the top of the roof.
So let s say a roof rises 6 inches for every 12 inches in depth towards the peak.
For example if the level is 4 above the roof at a point 12 away from where the level is touching the surface then the pitch is 4 12.
Some well defined standards are followed while deciding about roof pitch but in actuality the slope depends upon the type of roofing material and climatic conditions of the area.