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Gable Roof

Gable Roof. Flush with no eavesFlush with raked eavesBoxed. Flush Gable (No Eaves). Rafter finishes in line with end wallBarge fixed to outside wallNo Overhang. Studwork to take sheeting or support brickworkNot required to support roof. Flush Gable with Raked Eaves. Roof Extends to Form eave. Ridge Extends to Form Eave.

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Gable Roof

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    1. Gable Roof BCGCA3007B

    3. Flush Gable (No Eaves)

    4. Flush Gable with Raked Eaves

    5. Boxed Gable

    6. Verges Is the Junction of the Roof and the Barge/Verge Board

    7. Verge Detail for Sheet Metal Roof

    8. Principles of Roofing

    9. Roofing Members

    10. Roof Members Common Rafter – Main Sloping Roof Member Spacing 450mm or 600mm for Tiled Roofs 900mm for tiled roofs Supports Roof Battens which in turn support roof coverings Must be in single lengths or joined over supports Fixings (Nominal) 2 x 75mm Skew & 2 x 75mm into Ceiling Joist (if joist is > 38, 90mm Nails)

    11. Roofing Members

    12. Ridge Highest Part of the Roof Will run full length of Gable Roof Runs Parallel to TOP PLATE Fixes Rafters at Top of Roof Rafters are nailed either side and not offset by more than 1 thickness In Uncoupled Roof, they act as beams Nailed to Rafters with 2 x 75mm Nails

    13. Joining Ridge Boards

    14. Roofing Members

    15. Purlin Also known as Underpurlin Fixed to Underside of RAFTER Runs parallel to ridge and wall plates Reduce span of RAFTER Will run full length of Gable Roof

    17. Roofing Members

    18. Struts Transfer Loads From Purlins to Load Bearing Walls

    23. Roofing Members

    24. Collar Ties

    25. Gable Roof

    26. Common Rafter Main Roofing Member Calculated same method as Gable Spaced Usually at 450mm to 600mm for Tiled Roofs & 600mm to 900mm for Sheet Roof Cut using a Pattern Rafter

    27. Gable Roof

    28. Top Plate Top Part of the Wall Frame Takes structural load from Roof and Transfers it to the wall studs Size must be determined from span tables

    30. Pitching Line

    31. Pitching Line

    32. Pitching Line

    33. Pitching Line

    34. Pitching Line

    35. Pitching Line

    36. Common Rafter Principles

    37. Common Rafter Principles

    38. Common Rafter Principles

    39. Common Rafter Principles

    40. Confirmation of Learning

    41. Centreline Length

    42. Confirmation of Learning

    43. Common Rafter Principles

    44. Confirmation Of Learning

    45. Measurement of Rafter

    46. Confirmation Of Learning

    47. Measurement of Rafter

    48. Measurement of Rafter

    49. Determine Rafter Length Mathematically

    50. The “1 Metre Triangle”

    51. Step 1 - Solve 1m Triangle

    52. Step 1 - Solve 1m Triangle

    53. Step 1 - Solve 1m Triangle

    54. Step 1 - Solve 1m Triangle

    55. Step 1 - Solve 1m Triangle

    56. Step 1 - Solve 1m Triangle

    57. Step 1 - Solved 1m Triangle

    58. Confirmation of Learning

    59. Confirmation of Learning

    60. Determine Centreline Length

    61. Definition – Plan Length “Plan Length” is the Horizontal (Level) Distance a Roofing Member Travels

    62. Definition – Plan Length Plan Length is the Horizontal (Level) Distance a Roofing Member Travels

    63. Definition – Plan Length Plan Length is the Horizontal (Level) Distance a Roofing Member Travels

    64. Confirmation Of Learning

    65. Confirmation Of Learning

    66. Centreline Length

    67. Centreline Length

    68. Step 2 – Determine Plan Length Centreline Length

    69. Step 2 – Determine Plan Length Centreline Length

    70. Principle Of Similar Triangles If all 3 angles of 2 triangles are equal There will be the same proportional difference between the corresponding sides of the triangle

    71. Understanding the Principle Of Similar Triangles

    72. Understanding the Principle Of Similar Triangles

    73. Understanding the Principle Of Similar Triangles

    74. Understanding the Principle Of Similar Triangles

    75. Understanding the Principle Of Similar Triangles

    76. Understanding the Principle Of Similar Triangles

    77. Understanding the Principle Of Similar Triangles

    78. Understanding the Principle Of Similar Triangles

    79. Step 3 – Determine Rafter Length Centreline Length

    80. Step 4 – Determine Rise (If Required) Centreline Length

    81. True Length

    82. True Length

    83. Determine Centreline Length

    84. Step 2 – Determine Plan Length True Length

    85. Step 2 – Determine Plan Length Trur Length

    86. Principle Of Similar Triangles If all 3 angles of 2 triangles are equal There will be the same proportional difference between the corresponding sides of the triangle

    87. Understanding the Principle Of Similar Triangles

    88. Understanding the Principle Of Similar Triangles

    89. Understanding the Principle Of Similar Triangles

    90. Understanding the Principle Of Similar Triangles

    91. Understanding the Principle Of Similar Triangles

    92. Understanding the Principle Of Similar Triangles

    93. Understanding the Principle Of Similar Triangles

    94. Understanding the Principle Of Similar Triangles

    95. Step 3 – Determine Rafter Length True Length

    96. Step 4 – Determine Rise (If Required) Centreline Length

    97. Overhang on a Plan is always measured from external wall

    98. Determine Rafter Length Mathematically (Version 1)

    99. Determine Rafter Length Mathematically

    100. Determine Rafter Length Mathematically

    101. Determine Rafter Length Graphically

    102. Determine Rafter Length Mathematically

    103. Determine Rafter Length Mathematically

    104. Determine Rafter Length Graphically

    105. Determine Rafter Length Using Roofing Square

    112. Determine Roofing Angles used in Gable Roofs

    125. Complete Q5 in Workbook

    126. Determine Roof Angles Graphically

    127. Determine Roof Angles Graphically

    128. Determine Roof Angles Graphically

    129. Determine Roof Angles Graphically

    130. Steps In Construction Gable Roof Physically Confirm Span & Plates are Parallel Calculate True Rafter, Rise & Plumb cuts Mark out ceiling joists, rafters & ridge Install Ceiling Joists Cut Pattern Rafter & test to confirm Cut required rafters & install

    131. Estimating Gable Roof - Rafter From Previous Ceiling Estimate

    146. Estimating Sheet

    147. Estimating Gable Roof - Purlin

    149. Estimating Gable Roof -Purlin

    150. Estimating Sheet

    151. Estimating Gable Roof - Ridge

    152. Estimating Sheet

    153. Estimating Gable Roof - Struts

    155. Estimating Gable Roof - Struts

    156. Estimating Sheet

    157. Estimating Gable Roof – Collar Ties

    158. Estimating Sheet

    159. Estimating Gable Roof – Verge Trims

    161. Estimating Sheet

    163. Gable Roof

    164. Top Plate Part of the Wall Frame Takes structural load from Roof Size must be determined from span tables

    165. Top Plate

    166. Exercise 1 Determine Required Top Plate Size

    167. Common Rafter Principles

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