chapter 22 roof plan components roof plan types roof shapes roof materials vented soffit

20
Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Upload: gertrude-welch

Post on 03-Jan-2016

281 views

Category:

Documents


4 download

TRANSCRIPT

Page 1: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Chapter 22Chapter 22

Roof Plan Components

Roof Plan Types

Roof Shapes

Roof MaterialsVented soffit

Page 2: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Roof Plan Types Roof plans are used to show the shape of the roof including

roofing materials, vents, and any other objects located on the roof

Simple roof plans show roof vents, ridges, valleys, direction of slope.

Complex roof plans show individual roof members, connectors, etc.

Page 3: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Roof Pitch/ Slope

Slope or roof pitch is the description of the angle of the roof as horizontal run and vertical rise

Pitch is represented with a fraction which converts to an angle

Simple Approach example

Page 4: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Roof Pitch/ Slope

10/12 vs. 4/12 (6/12 typical)

Page 5: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Simplified Version we will do in this class

Required Elements:

•Dimensions at overhangs

•Hip and Valley noted

•Pitch noted

•Roof Vents

Page 6: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Flat Roof Shape

• Economical• Built with slight pitch so water can run off• Parapet (false wall) is built around the

roof

Page 7: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Shed Roof Shape

• Less drainage problems compared to flat roof

• Can be built at any pitch (no shallower than 4/12 in our climate

Page 8: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Gable Roof Shape

• Two shed roofs meet at a ridge

• Two or more gables meet to form a hip or valley

Page 9: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

A Frame Roof Shape

• Rafters are used as supporting walls

• The structure appears to form the letter “A”

Page 10: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Gambrel Roof Shape

• Traditional shape from colonial period

• Upper roof is greater pitch than lower roof

• Reduces cost of exterior building materials

Page 11: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Hip Roof Shape

• Eliminates roof mass• Structure appears

smaller• Two hips form a

valley

Page 12: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Dutch Hip Roof Shape

• Combination of hip and gable roof

• Center is similar to a gable roof

• Ends are similar to a hip roof

Page 13: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Mansard Roof Shape

• Similar to a gambrel but angled lower roof is on all four sides

• Flat roof on top

Page 14: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Dormer Roof Shape

• Opening in a roof to allow for a window

• Used in gable or hip roof

Page 15: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Dormer Roof Examples

Page 16: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Asphalt and Cedar Shingle ExamplesAdvantages vs. Disadvantages?

Page 17: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Clay and Slate Shingle ExamplesAdvantages vs. Disadvantages?

Page 18: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Metal Roof Examples Advantages vs. Disadvantages?

Page 19: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Roof Venting

1/150 square feet

1/300 sq ft if in upper half•Ridge•Turtle•Dormer•Fan

Page 20: Chapter 22 Roof Plan Components Roof Plan Types Roof Shapes Roof Materials Vented soffit

Green Roofing Practices

PHOTOVOLTAIC

Solar Thermal