So 9 5 8 12 is the secondary roof pitch.
Roof with 2 different pitch.
Using a pitch measuring tool that i d made we also determined that the exact pitch of the shed roof was 3 1 2 in 12.
Managing a hip roof with two different pitches.
The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.
It would seem that lining up the fascias and cornices so you have equal overhangs on both pitches would be impossible since the rafters of the two roofs extend beyond the plate at different angles.
It shows the image of roof pitch ratios as well as the standard angles resulted.
One thing that has become far more popular in recent years is the usage of hip roofs that have an alternative pitch at one side to the other.
Look at figure 2a which shows the two differently pitched common rafters.
Also different architectural styles will use the same type of roof.
Blind valleys simplify framing.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
Roof pitch ratio and angles.
Intricate roofs have many parts that incorporate several of the basic roof designs such as a gable roof sitting atop a gambrel or variations of the gable valley roof design using one or a variety of different types of roof trusses also see our very detailed diagrams showing the different parts of a roof truss.
Whilst it may sound ridiculous today they are used quite a lot these days to make a home look a bit more unique than others on the market.
As an example please take a look at the 1 12 ratio image.
To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge.