Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
Professor Brandi R.
Shepard©
Wood Frame Construction
Wood Ter...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
Professor Brandi R.
Shepard©
ROOF Framing
Roof Parts/Terms
Ro...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
3
Parts of the Roof Frame
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
4
FLOOR FRAMING COMPONENTS
 b ea m s a n d g i rd ers
 fl o...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
5
 fra m i n g m eth od s
 l a tera l b ra ci n g
 w a l l...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
6
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
7
Roof Terminology
 GABLE
 Triangular part of the wall
unde...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
8
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
9
Roof Terminology
 RIDGE
 Top part of gable or hip
roofs
...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
10
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
11
Roof Terminology
 VALLEY
 Trough formed by the
intersect...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
12
Roof Terminology
 DORMER
 Structure protruding
through t...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
13
Framing a Roof Opening for a Dormer
• DOUBLE HEADER RAFTER...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
14
 RAKE
 Edge of roof along sloping side
Consists of:
 RA...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
15
Roof Terminology
 EAVE
 Flat, horizontal edge at the low...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
16
Eave - Horizontal roof edge
Rake - Sloping roof
edge
Roof ...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
17
Metal Drip Edge
Soffit
• Wood
• Metal
• Plastic
Gutter
Fas...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
18
Rake and Eave Connections
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
19
Detailing
the Abbreviated Eave & Rake Cornice
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
20
Combining Eave and Rake Details
These detailsThese details...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
21
A ladder of lookouts supports and
provides a nailing surfa...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
22
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
23
ROOF SHAPES & STYLES
 FLAT
 minimal slope
 ¼” per foot
...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
24
ROOF SHAPES & STYLES
 GABLE
 Slopes in two directions
 ...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
25
RIDGE CONNECTIONS
Gable RoofGable Roof TerminologyTerminol...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
26
Hip RoofHip Roof TerminologyTerminology
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
27
 GAM BREL
 Like gable, but has two different pitches
 F...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
28
LEAN-TO ROOF
 SHED MEETING A WALL
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
29
FLAT ROOF OVERHANGFLAT ROOF OVERHANG
CONDITIONSCONDITIONS
...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
30
Roof Trusses
• SMALLERMEMBERS
•Uses 2X4’S and 2X6’S
• STRE...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
31
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
32
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
33
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
34
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
35
alleys in Trussed Roofs
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
36
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
37
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
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Attic Trusses
www.precisionrooftrusses.com/Attic%20Truss.p...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
39
ABBREVIATED EAVE
FRAMED WITH
TRUSSES
BOXED-IN TOP CORD
OF ...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
40
Plywood Roof SHEATHING or DECKING
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
41
SKIP SHEATHING with diagonal bracing
• for use with wood s...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
42
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
43
Plywood Clip:Plywood Clip:
To prevent separation of roof s...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
44
Roof Slope and Pitch
The angle, or pitch, of a roof is
cal...
Professor Brandi R. Shepard©
ACH 121-Materials and Methods 1
Professor Brandi R.
Shepard©
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ACH 121 Lecture 09 (Roof Frame)

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  • Eaves
    Horizontal Roof Edges
    PROVIDE AN “OVERHANG”
    KEEP WATER OFF SIDING
    REALIZE THE VOLUME OF WATER
    ALSO CAN PROVIDE “SHADE”
    Rakes
    Sloping Roof Edges
    AUTHOR SHOWS FLUSH W/ SIDING
    OFTEN AN OVERHANG TO PREVENT STAINING
    OVERHANG SUPPORTED BY “LOOKOUTS”
    Edge Details
    INSTALLED PRIOR TO ROOFING
    Fascia & Rack Boards
    Fascia @ Eaves
    Rake Boards @ Rakes
    Metal Drip Edges
    TO KEEP WATER OFF TRIM & SIDING
  • ACH 121 Lecture 09 (Roof Frame)

    1. 1. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 Professor Brandi R. Shepard© Wood Frame Construction Wood Terms Framing Methods Floor, Wall & Roof Systems Innovations in Wood Frame Construction
    2. 2. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 Professor Brandi R. Shepard© ROOF Framing Roof Parts/Terms Roof Shapes/Styles Framing Conditions Roof Pitch/Slope
    3. 3. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 3 Parts of the Roof Frame
    4. 4. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 4 FLOOR FRAMING COMPONENTS  b ea m s a n d g i rd ers  fl oor joi sts  su b fl oori n g Review from last classReview from last class
    5. 5. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 5  fra m i n g m eth od s  l a tera l b ra ci n g  w a l l sh ea th i n g Review from last classReview from last class WALL FRAMING COMPONENTS
    6. 6. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 6
    7. 7. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 7 Roof Terminology  GABLE  Triangular part of the wall under each end of a roof gable rake board
    8. 8. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 8
    9. 9. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 9 Roof Terminology  RIDGE  Top part of gable or hip roofs  Where the roof “folds” over the top  Area where rafters meet ridge board
    10. 10. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 10
    11. 11. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 11 Roof Terminology  VALLEY  Trough formed by the intersection of two roof slopes  Inside “fold” of two intersecting roofs  Comprises of the valley rafter  Diagonal rafter that supports the valley intersection
    12. 12. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 12 Roof Terminology  DORMER  Structure protruding through the plane of a sloping roof  Has its own roof structure  Small secondary roof structure in the attic space  Usually contains a window
    13. 13. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 13 Framing a Roof Opening for a Dormer • DOUBLE HEADER RAFTERSDOUBLE HEADER RAFTERS • DOUBLE TRIMMER RAFTERDOUBLE TRIMMER RAFTER
    14. 14. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 14  RAKE  Edge of roof along sloping side Consists of:  RAKE BOARD  Edge board under roof structure following slope  CORNICE RETURN  Exterior detail where the wall and roof overhang meet  Also known as the LOOKOUT  Short rafter that runs perpendicular to rafters, supporting the rake overhang Roof Terminology
    15. 15. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 15 Roof Terminology  EAVE  Flat, horizontal edge at the low side of a sloping roof  Gutter placement Consists of:  FASCIA BOARD  Edge board under roof structure following slope  SOFFIT  Undersurface of roof overhang  SOFFIT VENT  Opening in soffit under eave to allow air to flow into attic or area below roof sheathing
    16. 16. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 16 Eave - Horizontal roof edge Rake - Sloping roof edge Roof Terminology Eaves & Rakes
    17. 17. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 17 Metal Drip Edge Soffit • Wood • Metal • Plastic Gutter Fascia Eave Detail
    18. 18. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 18 Rake and Eave Connections
    19. 19. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 19 Detailing the Abbreviated Eave & Rake Cornice
    20. 20. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 20 Combining Eave and Rake Details These detailsThese details describe thedescribe the various ways avarious ways a cornice returncornice return can be finishedcan be finished
    21. 21. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 21 A ladder of lookouts supports and provides a nailing surface for a boxed-in rake. SMALL OVERHANG LARGE OVERHANG Soffit Details
    22. 22. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 22
    23. 23. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 23 ROOF SHAPES & STYLES  FLAT  minimal slope  ¼” per foot  SH ED  slopes in one direction  slope can vary These roof types exert NO lateral forces
    24. 24. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 24 ROOF SHAPES & STYLES  GABLE  Slopes in two directions  Rafters meet at top peak to a ridge board  H IP  slopes in four directions  slope is constant on all sides These roof styles are most popular in building construction
    25. 25. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 25 RIDGE CONNECTIONS Gable RoofGable Roof TerminologyTerminology
    26. 26. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 26 Hip RoofHip Roof TerminologyTerminology
    27. 27. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 27  GAM BREL  Like gable, but has two different pitches  Flattens at top (but does not have a flat top)  M AN SARD  Gambrel and hip combined  Also slopes in four directions These styles require knee walls and ceiling joists for structural stability-great for loft spaces ROOF SHAPES & STYLES
    28. 28. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 28 LEAN-TO ROOF  SHED MEETING A WALL
    29. 29. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 29 FLAT ROOF OVERHANGFLAT ROOF OVERHANG CONDITIONSCONDITIONS Flat roofs are not typical inFlat roofs are not typical in residential construction in thisresidential construction in this region primarily due to the weatherregion primarily due to the weather conditionsconditions (live loads dealing with snow and(live loads dealing with snow and rain)rain)
    30. 30. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 30 Roof Trusses • SMALLERMEMBERS •Uses 2X4’S and 2X6’S • STRENGTH Thru Triangulation of members • MORE COMPLICATEDTO FRAME COMPLEXROOFS • LESS EXPENSIVE
    31. 31. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 31
    32. 32. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 32
    33. 33. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 33
    34. 34. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 34
    35. 35. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 35 alleys in Trussed Roofs
    36. 36. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 36
    37. 37. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 37
    38. 38. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 38 Attic Trusses www.precisionrooftrusses.com/Attic%20Truss.pdf
    39. 39. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 39 ABBREVIATED EAVE FRAMED WITH TRUSSES BOXED-IN TOP CORD OF TRUSS EXTENDED TOP CORD WITH SOFFITED EAVE Cornice Details using Roof Trusses
    40. 40. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 40 Plywood Roof SHEATHING or DECKING
    41. 41. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 41 SKIP SHEATHING with diagonal bracing • for use with wood shingles and shakes Plywood Roof SHEATHING or DECKING
    42. 42. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 42
    43. 43. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 43 Plywood Clip:Plywood Clip: To prevent separation of roof sheathing at midTo prevent separation of roof sheathing at mid span between rafters or trusses Also allowsspan between rafters or trusses Also allows moisture expansion of the sheathing; typically 1/8”moisture expansion of the sheathing; typically 1/8” spacing between panelsspacing between panels
    44. 44. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 44 Roof Slope and Pitch The angle, or pitch, of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. Also denoted as “rise over run” For example, a roof that rises 6 inches for every 12 inches of horizontal run has a 6/12 pitch.
    45. 45. Professor Brandi R. Shepard© ACH 121-Materials and Methods 1 Professor Brandi R. Shepard© NEXT LECTURE Utilities Electrical Systems  Mechanical Systems  Water and Plumbing Systems

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