Transcript Roof Bevels Using Steel Square

Roof Bevels Using Steel Square
Creeper Edge Bevel using Steel Square
Creeper Edge Bevel using Steel Square
Using our Knowledge of Similar Triangles
If we reduce all sides of the Triangle by the
same ratio the angles formed will be the same
Creeper Edge Bevel using Steel Square
Therefore we need to reduce the full scale
triangle to fit the steel square above
Creeper Edge Bevel using Steel Square
Using our Knowledge of Similar Triangle
If we reduce it by a factor of 6 we have the
triangle above left
Creeper Edge Bevel using Steel Square
Using our Knowledge of Similar Triangle
If we reduce it by a factor of 6 we have the
triangle above left
Creeper Edge Bevel using Steel Square
In this case we
We are after this
angle
It doesn’t matter which blade of the square
you transfer the measurement to so long as
you remember the location of the angle you
are after.
Creeper Edge Bevel using Steel Square
We are after this
angle
If we place the measurements on the other
blades
NOTE – Do not confuse this with the purlin
edge bevel as it is not the same
Creeper Edge Bevel using Steel Square
We are after this
angle
If we place the measurements on the other
blades
NOTE – Do not confuse this with the purlin
edge bevel as it is not the same
Purlin Edge Bevel using Steel Square
Purlin Edge Bevel using Steel Square
Using our Knowledge of Similar Triangle
Purlin Edge Bevel using Steel Square
Using our Knowledge of Similar Triangle
If we reduce it by a factor of 6 we have the
triangle above left
Purlin Edge Bevel using Steel Square
In this case we
We are after this
angle
.Remember it is important to keep track of the
angle you want.
It is easy to confuse this with the creeper edge
bevel
Creeper & Purlin Edge Bevel using Steel
Square
I have always found it
less confusing if the
angles are put on the
square as you see it
Hip Edge Bevel using Steel Square
From our previous work we
developed the above
dimensions
•We need to reduce the triangle to fit on
the steel square
•Say Divide by 9
Hip Edge Bevel using Steel Square
From our previous work we
developed the above
dimensions
•We need to reduce the triangle to fit on
the steel square
•Say Divide by 9
Hip Edge Bevel using Steel Square
Remember to Keep Track of
the required angle
Purlin Face Bevel
Formed by Common Rafter
& Rise
Review triangle that
forms this bevel
Purlin Face Bevel
We can reduce by a
factor of 4
Purlin Face Bevel
We can reduce by a
factor of 4
Purlin Face Bevel
Remember to Keep Track of
the required angle