Technology Education Department
Technical Drawing Program

• Walls sections are drawings at scales of 1/4"=1'-0" to 1"=1'-0" that show the builder and tradesmen how the interior and exterior walls of a building are constructed.
• The names of components, the component's material and size, and the height location dimensions are shown on a wall section.
• The number of section views depends on the complexity of the building, number of levels, changes in materials and methods of construction.
• Wall sections are located using a line that is perpendicular to and extending through a wall with an arrow parallel to the wall on one end and a split circle on the other end. The circle includes a reference letter or number and a page number.
• A typical wall section for a residence would include the following components:
  Footings
  Foundation walls
  Pea gravel or fill sand
  Moisture barrier
  Basement floor slab
  Concrete pads
  Wood or steel posts
  Steel or wooden main beams
  Sill plate
  Floor joists
  Diagonal bridging
  Subfloor
  Sole plate
  Wall studs and batt insulation
  Corner bracing
  Top plates
  Exterior insulating sheathing
  Drywall, plaster or paneling
  Siding or masonry materials
  Ceiling joists and insulation
  Rafters
  Ridge board
  Collar ties
  Sub-fascia
  Fascia
  Soffit and vents
  Nailers
  Roof sheathing
  Felt building paper
  Asphalt or wood shingle, clay or cement tiles
• A typical wall section for a single story commercial building would include the following components:
  Footings
  Foundation walls
  Pilasters
  Piers
  Pads
  Pea gravel or fill sand
  Moisture barrier
  Rigid floor insulation
  Floor slab with welded wire mesh reinforcing
  Concrete exterior walls
  Rigid insulation board
  Air space
  Exterior brick, stone, granite or marble
  Steel sole plate
  Steel studs and batt insulation
  Steel corner bracing
  Steel top plates
  Drywall, plaster or paneling on interior walls
  Suspended accoustical ceiling panels & aluminum supports
  Steel round, square or I-beam columns
  Steel I-beams
  Steel roof trusses
  Steel decking or structural insulated panels
  Rigid insulation
  Z strips and metal roofing or built-up tar and gravel roofing
  Wooden cant strip
  Bituminus or metal flashing
  Wall cap
• Construction details are partial section views of every part of a building andare drawn at scales of 1/2"=1'-0" to 3"=1'-0".
• The names of components, the component's material and size, and all locational dimensions are shown on a a construction detail.
• The number of construction details depends on the complexity of the building, number of levels, changes in materials and methods of construction.
• Each detail is identified by title, scale and a split circle that includes a reference letter or number and a page number.