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Competency: 206.00 Draw wall sections and details

Competency: 206.00 Draw wall sections and details. Objective: 206.05 Determine the purpose and features of a wall section. Sectional Drawings. Used to reveal the internal construction Provide information concerning materials and assembly Detail sections show specific parts of construction.

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Competency: 206.00 Draw wall sections and details

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  1. Competency: 206.00Draw wall sections and details Objective: 206.05 Determine the purpose and features of a wall section.

  2. Sectional Drawings • Used to reveal the internal construction • Provide information concerning materials and assembly • Detail sections show specific parts of construction

  3. Sectional BasicsCutting Planes • Edge of cutting plane is drawn as a line on the floor plan • Heavy, dark line • Coding includes two dashes • Arrows indicate direction of sight • Most often attached to a circle that identifies the section and its location within the drawing set

  4. Sectional BasicsCutting Planes • Sometimes only the ends are shown to prevent interference with other information • Assumed to be a straight line between ends • If offset, the bend (offset) is shown • A cutting plane extending fully across the short dimension of the structure defines a transverse section • A cutting plane extending fully across the long dimension of a structure defines a longitudinal section

  5. Sectional Basics • Section lining (hatching) • Features behind the cutting plane are not section, but are shown in proper position and scale • Materials are defined by symbols (section lines) • Hatching (section lining) is thinner than visible lines

  6. Section hatchingCommon Symbols Brick Steel Insulation

  7. Section hatchingCommon Symbols Concrete Lumber Earth Sand Gravel

  8. Drawing Scale • Sections showing the entire building are drawn at small scales • ¼” = 1’-0” are most common • Small scales do not allow detail • Break lines are used to reduce distances by removing repetitive information • Used where construction does not change over a long distance • Allows drawing large areas at readable scales • Long break lines have a center zigzag or looped connection

  9. Drawing Scale • Scale selected for a Typical Wall Section should allow the details to be clearly shown while still fitting the available space ¾” = 1’-0” 1” = 1’-0” 1-½” = 1’-0”

  10. Dimensions • Specific elevation numbers, distances, and sizes of building materials • Important dimensions are often included • Floor to ceiling heights • Crawl space vertical height • Footing sizes • Foundation wall thickness • Roof overhang • Roof slope

  11. Dimensions • The order of notes is to give number, size, and material description of various building elements • Ex: 2-2 x 4 DOUBLE TOP PLATE • Leaders lead from the note to where the note applies

  12. Footing Foundation Drain tile and waterproofing as needed Sill and sill anchoring system Joists and Rim Joists Subfloor Underlayment Sole plate Wall stud Double top plate Wall sheathing material Ceiling joist or truss Rafter or truss Fascia (if included) Soffit (if included) Lookouts and other soffits nailers Drip edge Building paper Roof covering material Insulation for walls, floors, ceilings Interior and exterior wall finish materials and trim Metal straps (hurricane ties) Elements Shown onTypical Wall Section

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