No pitch required
(how )

* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.

3D

L1

L2

l1

C1

C2

H

* L is the length of the roof

* l is the width of the roof

* H is the rise (height) of the roof (3D image)

* C is the ridge length of the roof

* For decimal dimensions, use the dot notation! (.)

* l is the width of the roof

* H is the rise (height) of the roof (3D image)

* C is the ridge length of the roof

* For decimal dimensions, use the dot notation! (.)

BH = EH =
...

AG = FG =
...

CI = DI =
...

AB =
...

BC =
...

AF = CD =
...

DE =
...

EF =
...

GH =
...

HI =
...

ABHG =
...

BCIH =
...

DEHI =
...

EFGH =
...

AGH =
...

CDI =
...

ABIHF = BCIH = DEHI = EFGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGF

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.

3D

L1

L2

l1

C1

C2

H

Small dormer:

Lu 1
Lu1

* l is the width of the roof

* H is the rise (height) of the roof (3D image)

* C is the ridge length of the roof

* For decimal dimensions, use the dot notation! (.)

BH = EH =
...

AG = FG =
...

CI = DI =
...

AB =
...

BC =
...

AF = CD =
...

DE =
...

EF =
...

GH =
...

HI =
...

ABHG =
...

BCIH =
...

DEHI =
...

EFGH =
...

AGH =
...

CDI =
...

ABIHF = BCIH = DEHI = EFGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGF

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

* This image is to clarify which is the rise of the roof (H) and the rise of the dormer (h). The image is for general informational purpose.

3D

L1

L2

l1

C1

C2

H

Large dormer:

Lu 0
Lu0

Lu 1
Lu1

Lu 2
Lu2

h
h

* l is the width of the roof

* H is the rise (height) of the roof (3D image)

* C is the ridge length of the roof

* For decimal dimensions, use the dot notation! (.)

BH = EH =
...

AG = FG =
...

CI = DI =
...

AB =
...

BC =
...

AF = CD =
...

DE =
...

EF =
...

GH =
...

HI =
...

ABHG =
...

BCIH =
...

DEHI =
...

EFGH =
...

AGH =
...

CDI =
...

ABIHF = BCIH = DEHI = EFGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGF

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

3D

L1

L2

l1

C1

C2

H

Small dormer:

Lu 1
Lu1

Small dormer 2:

Lu 3
Lu3

Lu 4
Lu4

h 2
h 2

* l is the width of the roof

* H is the rise (height) of the roof (3D image)

* C is the ridge length of the roof

* For decimal dimensions, use the dot notation! (.)

BH = EH =
...

AG = FG =
...

CI = DI =
...

AB =
...

BC =
...

AF = CD =
...

DE =
...

EF =
...

GH =
...

HI =
...

ABHG =
...

BCIH =
...

DEHI =
...

EFGH =
...

AGH =
...

CDI =
...

ABIHF = BCIH = DEHI = EFGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGF

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

3D

L1

L2

l1

C1

C2

H

Large dormer:

Lu 0
Lu0

Lu 1
Lu1

Lu 2
Lu2

h
h

Large dormer 2:

Lu 4
Lu4

Lu 5
Lu5

Lu 6
Lu6

h 2
h 2

* l is the width of the roof

* H is the rise (height) of the roof (3D image)

* C is the ridge length of the roof

* For decimal dimensions, use the dot notation! (.)

BH = EH =
...

AG = FG =
...

CI = DI =
...

AB =
...

BC =
...

AF = CD =
...

DE =
...

EF =
...

GH =
...

HI =
...

ABHG =
...

BCIH =
...

DEHI =
...

EFGH =
...

AGH =
...

CDI =
...

ABIHF = BCIH = DEHI = EFGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGF

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

3D

L1

L2

l1

C1

C2

H

Large dormer:

Lu 0
Lu0

Lu 1
Lu1

Lu 2
Lu2

h
h

Small dormer:

Lu 4
Lu4

Lu 5
Lu5

h 2
h 2

* l is the width of the roof

* H is the rise (height) of the roof (3D image)

* C is the ridge length of the roof

* For decimal dimensions, use the dot notation! (.)

BH = EH =
...

AG = FG =
...

CI = DI =
...

AB =
...

BC =
...

AF = CD =
...

DE =
...

EF =
...

GH =
...

HI =
...

ABHG =
...

BCIH =
...

DEHI =
...

EFGH =
...

AGH =
...

CDI =
...

ABIHF = BCIH = DEHI = EFGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGF

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

AGH

- Slope Grade = ... %
- Angle = ... deg
- Pitch = ... x12

All calculations are free to use and we decline any responsibility on the end result

The informations provided by our website are generic and they should not be used for purchasing construction materials - for that please consult a specialist.

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