BECE 2023

    Cards (5)

    • Properties of a good wood preservative: Easy to apply, safe to handle, no adverse effect on wood, ability to resist fire, no change in chemical composition on exposure to sun or rain
    • Methods of wood conversion
      • Plain sawing
      • Quarter sawing
    • Orthographic projection
      Technique of representing the true shape of an object on a single plane by describing the shapes and sizes of each part of the complete object, representing a 3-D object in 2-D
    • Views in orthographic projection
      • Front view
      • Plan (top) view
      • Side view (left or right)
    • Functions of roof
      • Supports/carries its load and all loads imposed on it without distortion
      • Provides protection from the weather
      • Durable
      • Resists air leakage
      • Beautifies the building
      • Resists the passage of heat and sound
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