1 / 107

Weekend Cabin Retreat Project Roofs

Weekend Cabin Retreat Project Roofs. Sacramento City College EDT 300 Kenneth Fitzpatrick, P.E. Types of Roofs. The appearance of a house is affected greatly by the roof lines and material. The roof should compliment the structure. Gable Roof. The gable roof is very popular.

bstephen
Download Presentation

Weekend Cabin Retreat Project Roofs

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Weekend Cabin Retreat ProjectRoofs Sacramento City College EDT 300 Kenneth Fitzpatrick, P.E. EDT 300 - Cabin Design Project - Roofs

  2. Types of Roofs • The appearance of a house is affected greatly by the roof lines and material. • The roof should compliment the structure. EDT 300 - Cabin Design Project - Roofs

  3. EDT 300 - Cabin Design Project - Roofs

  4. EDT 300 - Cabin Design Project - Roofs

  5. Gable Roof • The gable roof is very popular. • Easy to build. • Sheds water well. • Provides for ventilation. • Can be used on a variety of house designs. EDT 300 - Cabin Design Project - Roofs

  6. EDT 300 - Cabin Design Project - Roofs

  7. Hip Roof • The hip roof is slightly more difficult to build than a gable roof. • The hip roof is a very popular choice. • Doesnotprovide for ventilation as well as gable roof. • Increased chance of leaks because of hips and valleys. EDT 300 - Cabin Design Project - Roofs

  8. EDT 300 - Cabin Design Project - Roofs

  9. Flat Roof • The flat roof is the most economical roof to construct. • Doesn’t add much to the appearance of the house. • Requires “built-up” or membrane roof covering instead of conventional shingles. • A built-up roof consists of layers of roofing felt and tar. • Usually pitched about 1/8” to 1/2” to provide for drainage. EDT 300 - Cabin Design Project - Roofs

  10. Flat Roof • The flat roof is popular in warmer areas of the country where wide overhangs are desirable for shade and where little or no snow falls. EDT 300 - Cabin Design Project - Roofs

  11. EDT 300 - Cabin Design Project - Roofs

  12. Shed Roof • The shed roof is similar to flat roof but has more pitch. • Frequently used for additions to existing buildings. • A built-up roof is often required. • Pitch must be 3:12 to use shingles. EDT 300 - Cabin Design Project - Roofs

  13. EDT 300 - Cabin Design Project - Roofs

  14. Butterfly Roof • The butterfly roof has not been used widely in the past. • Provides plenty of light and ventilation. • Drainage is the problem. • Flashings must extend far up the roof to prevent leaks. EDT 300 - Cabin Design Project - Roofs

  15. EDT 300 - Cabin Design Project - Roofs

  16. Gambrel Roof • The gambrel roof is sometimes called a “barn roof”. • It has been used extensively for barns. • Provides the additional headroom required for the “Dutch colonial” building style. EDT 300 - Cabin Design Project - Roofs

  17. EDT 300 - Cabin Design Project - Roofs

  18. Winged Gable • The winged gable is a variation on the gable roof. • Ridge peaks are extended to form a point. EDT 300 - Cabin Design Project - Roofs

  19. EDT 300 - Cabin Design Project - Roofs

  20. Dutch Hip • The dutch hip is a combinedgable and hip configuration. EDT 300 - Cabin Design Project - Roofs

  21. EDT 300 - Cabin Design Project - Roofs

  22. Mansard Roof • The mansard roof has not been popular for several years. • Is returning to popularity. • Is a French design. • Is more difficult to construct than hip or gable. EDT 300 - Cabin Design Project - Roofs

  23. EDT 300 - Cabin Design Project - Roofs

  24. A-Frame Roof • The A-frame is a combinedwall and roof. • Originally used for cottages. • Now is used for homes, churches, and other structures. EDT 300 - Cabin Design Project - Roofs

  25. EDT 300 - Cabin Design Project - Roofs

  26. Curved Plate Roof • Similar to Folded Plate roof. • Limited residential application. • Some use in prefabricated modules. EDT 300 - Cabin Design Project - Roofs

  27. EDT 300 - Cabin Design Project - Roofs

  28. Folded Plate Roof • The Folded Plate Roof is a contemporary design. • It is finding some limited application in residential construction. • Quite popular for motels and small commercial buildings. • Many modular, prefabricated units have this type of roof. EDT 300 - Cabin Design Project - Roofs

  29. EDT 300 - Cabin Design Project - Roofs

  30. Traditional Frame Roof Construction EDT 300 - Cabin Design Project - Roofs

  31. Rafters • Roof covering material is supported by roof framing. • The framing must be strong and rigid. • Roof framing consists of several distinct structural elements. • The first and most basic of these elements is the rafter. EDT 300 - Cabin Design Project - Roofs

  32. Rafters • Common rafters are perpendicular to the top wall plate. • They extend from the plate or beyond to the ridge of the roof. • Note that several types of rafters other than common rafters are identified. EDT 300 - Cabin Design Project - Roofs

  33. EDT 300 - Cabin Design Project - Roofs

  34. Rafters • Rafters are cut to the proper dimensions by locating the ridge cut, seat cut, plumb cuts, and tail cut. • The precise layout of these cuts is determined by • The slope or pitch of the roof. • The inside width or clear span of the building. EDT 300 - Cabin Design Project - Roofs

  35. EDT 300 - Cabin Design Project - Roofs

  36. Rafters • Terms that must be understood before calculating rafter dimensions and roof pitch are: • Rise. • Run. • Span. EDT 300 - Cabin Design Project - Roofs

  37. Terminology • Rise - the vertical distance measured from the top of the wall plate to the underside of the rafters. EDT 300 - Cabin Design Project - Roofs

  38. EDT 300 - Cabin Design Project - Roofs

  39. Terminology • Run - one-half of the distance of the clear span. EDT 300 - Cabin Design Project - Roofs

  40. EDT 300 - Cabin Design Project - Roofs

  41. Terminology • Clear Span - is the horizontal distance from the inside of one stud wall to the inside of the opposite stud wall. EDT 300 - Cabin Design Project - Roofs

  42. EDT 300 - Cabin Design Project - Roofs

  43. Roof Slope • Roof slope may be indicated on the drawings by: • A slope ratio diagram • A fractional pitch indicator • An angular dimension. • The angular dimension method is seldomused • It is difficult to measure as accurately as either of the other methods. EDT 300 - Cabin Design Project - Roofs

  44. Roof Slope • When designing a roof, use a standard roof pitch. • 3 in 12. • 4 in 12. • 5 in 12. • 6 in 12. EDT 300 - Cabin Design Project - Roofs

  45. Rafters • Select rafters based on • The distance to be spanned. • The spacing of the rafters. • The weight to be supported. • Rafters for low-slope roofs may also serve as ceiling joists. EDT 300 - Cabin Design Project - Roofs

  46. Roof Weights Per Square Foot • A “light roof” is one that weighs less than 4 lbs per square foot. • Examples: • Cedar shake roof. • Composition roof. • Metal roof. EDT 300 - Cabin Design Project - Roofs

  47. Roof Weights Per Square Foot • A “heavy roof” is one that weighs more than than 4 lbs per square foot. • Examples • Slate. • Clay tile. • Concrete tile. EDT 300 - Cabin Design Project - Roofs

  48. EDT 300 - Cabin Design Project - Roofs

  49. EDT 300 - Cabin Design Project - Roofs

  50. EDT 300 - Cabin Design Project - Roofs

More Related