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Roofs

. Roofs. 12. Walls. 8. Exterior Walls in Elevation: see Materials & Bldg. shape Roof is 8:12 Pitch /or slope Cladding is drawn as Brick & Stucco siding. Roof slope. Bear. Rafters Roof framing supports - give roof profile/shape

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Roofs

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  1. . Roofs

  2. 12 Walls 8 Exterior Walls in Elevation: see Materials & Bldg. shape • Roof is 8:12 Pitch /or slope Cladding is drawn as Brick & Stucco siding

  3. Roof slope Bear Rafters • Roof framing supports - give roof profile/shape Pitch/slope ratio - every 12” out raise the rafter 5”or 5:12 A Rafter & ceiling joist system maybe substituted for ...A System of … Roof Trusses.

  4. Walls Wall & Roof Framing Rarely seen drawn out completely in a working drawing set! need to clarify a construction condition...Use a DETAIL Like at the Eave Rake or Ridge of Roof

  5. Details • focus in from general to the specific condition • drawn in orthographic • (2-D) Bldg. Section • Details: • Roof detail of eave • Roof detail would be at ridge Rake wall. * .

  6. . Joists or trusses in a Dwg Set. : 1st floor joists found on foundation plan or separate 1st fl. Framing plan 2nd floor maybe on first floor plan Roof trusses or ceiling joist maybe on 2nd floor plan.

  7. Walls ....Here are Headers(HDR) on a Roof Framing plan even though they are part of the Wall Framing • Plan shows the Roof truss layout

  8. Walls Wall Framing Tilting up the wall from the platform framing ....(here a Roof’s Rake Wall goes up.) Sheathing

  9. Structural infoneed to know for Roof and wall framing*headers*brace panels*bearing walls*spacing/size/span of roof truss or rafters ceiling joist *

  10. Roof framing*headers*spacing/size/span of roof truss or rafters ceiling joist *

  11. RaftersRidge beamEavesHipscollar-ties & ceiling joistsoverhangs& Rake wallvalleys …p.129 Roof Framing – Basic components

  12. Walls Roof Framing • Framing Contractor familiar with Common Shapes for roofs

  13. Walls Roof Framing sometimes drawn to show a complex roof System …most of the time ceiling joist laid over 2nd floor plan

  14. Walls Roof Plan is different than Roof Framing Plan -

  15. Roof slope pic of platform & balloon Wallsp.186print reading for construction Bear Roof Framing Terms • Pitch to describe Slope or incline of roof Ratio b/w Horizontal run & Vertical rise • …a 6:12 roof (…means for every 12” rafter rises 6”) Symbol is a“sideways” L with ratio (found on the bldg. section dwg.)

  16. Roof Truss • Shape of roof pitch • W Truss – most common / engineered • Spans longer distances

  17. Walls Roof Framing Common Shapes of Roof Trusses & Framing W TRUSS

  18. Flat roofing system A Detail at bldg. edge “the curb” ....insulation is rigid (not batt) *

  19. Section The profile (or slope) of typical roof constructions Insulation & ventilation key parts of enclosure system. *

  20. Cross Ventilation at roof prevents moisture build up ...want similar amount of air in as out (sim. temp.) air flowing across roof rafter. * isometric view of eave venting

  21. Walls Roof Framing -Eave Detail shows how roof and wall meet ... venting & soffit Pictorial view -Isometric of Roof Lookout

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