1. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ ROOF STYLES COMMON ROOF STYLES Roof styles are an important feature of the building of a residental home. Everyone from the designer to the builder to the consumer can benefit from the basic knowledge of roof styles. Flat Roof- A single plane that is pitched at a low angle to shed water Salt Box Roof- Shed roof built onto a gable roof at the same pitch and width

2. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Hip Roof- A a gable roof with the ends brought together at the same pitch as the rest of the roof. Gable Roof- Two pitched roofs, back to back, forming a triangular roof Kicked Eaves Roof- An roof enhancement where the plane near the eaves is "kicked" to give a visor effect Gambrel Roof- A gable type roof with breaks in the planes

3. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Mansard Roof- A double planed hip roof Pyramid Roof- A hip roof built on a square base with eaves of the same length

4. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Cross Gable Roof- Pairs of gable roofs set at right angles to each other Conical roof- A triangle rotated through itself

5. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Hip On Gable Roof- A partial hip applied to the peak of a gable roof Hip and Gable Roof- A combination of hip and gable where the hip ends partially up the gable Shed Roof- A roof that starts at the eaves of the existing roof and continues at a lower pitch Hip Roof With Cross Gables- A central hip with crossing gables

6. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Try to identify these photographs of various roof styles. Hip Gable Mansard Pyramid Cross Gables Pyramid Conical Gambrel Kicked eaves Hip Pyramid Shed Hip on gable Hip Mansard Hip and gable

7. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Saltbox Flat Gable Gambrel Saltbox Gable Hip and gable Cross gables Conical Pyramid Mansard Hip Hip on gable Mansard Hip with cross gables Hip and gable Cross gables Saltbox Mansard Shed Hip and gable Hip on gable Cross gables Hip roof with cross gablesHip roof with cross gables

8. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Cross gables Mansard Kicked eaves Hip and gable Conical Mansard Kicked eaves Pyramid Mansard Conical Hip Hip roof with cross gablesHip roof with cross gables Gable Shed Flat Gambrel

9. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ ROOF LOADS Live Loads Any load which is not of permanent nature, such as snow,wind, movable concentrated loads, furniture, etc. Live loads are generally of short duration. Dead Loads Permanent loads that are constant on the truss or rafter, e.g.; the weight of the truss itself, purlins, sheathing, roofing, ceiling

10. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ ROOF SLOPE

11. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ SLOPE & PITCH Span Distance between outside edges of the double plates. Run ½ of span distance Rise Vertical distance from the top of the double top plate to the middle of rafter at ridge Unit Rise Number of inches that a roof rises for every 1 foot Slope Ratio of Rise to Run (4/12) Inches of vertical rise per running foot. Pitch The ratio of the Rise, in feet, to the Span, in feet.

12. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________

13. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________

14. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________

15. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Non-supporting Ridge Board Ridge board is non structural simply keeps rafters straight Opposing rafters act like an arch, forces transferred to walls. Ceiling joists required to prevent outward "Thrust".

16. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________ Structural Ridge Beam Supports upper rafter ends so roof functions as 2 sheds Must span between vertical supports at end walls

17. L I M K O K W I N G I N S T I T U T E S C O L L E G E O F C R E A T I V E T E C H N O L O G Y Faculty of Architecture and the Built Environment Building Construction 1 Semester 1 ______________________________________________________________________________________________________