Roof System

Cards (34)

  • Rafters
    Light-gauge steel joist sections serve as?
  • Hip
    Roofs that have sloping ends and sides meeting at an inclined projecting angle
  • Ridge beam
    Is a structural horizontal member supporting the upper ends of rafters at the ridge of a roof
  • Valley
    Is intersection of two inclined roof surfaces toward which rainwater flows
  • Hip
    Is the inclined projecting angle formed by the junction of two adjacent sloping sides of a roof
  • Rake
    Is the inclined, usually projecting edge of a sloping roof
  • Pratt
    Trusses that have vertical web members in compression and diagonal web members in tension
  • Howe
    Trusses that have vertical web members in tension and diagonal web members in compression
  • Fink
    Are Belgian trusses having sub-diagonals to reduce the length of compression web members toward the centerline of the span
  • Low-slope
    A sloping roof up to 3:12
  • Collar tie
    Unite two opposing rafters at a point below the ridge, usually in the upper third of the rafter length
  • Main rafter
    Extend from a wall plate to a ridge board or ridge beam and support the sheathing and covering of a roof
  • Habitable attic space
    Sufficient headroom, ventilation, and natural light
  • Flat roof
    Which of the following require a continuous membrane roofing material, can efficiently cover a building of any horizontal dimension, and may be structured and designed to serve as an outdoor space?
  • Flat
    Trusses that have parallel top and bottom chords
  • Dormer
    Are projecting structures built out from a sloping roof and housing a vertical window or ventilation louver
  • Roof construction
    Should also control the passage of moisture vapor, the infiltration of air, and the flow of heat and solar radiation
  • Roof form and slope
    Must be compatible with the type of roofing used to shed rainwater and melting snow to a system of drains, gutters, and downspouts
  • Gambrel roof
    Are divided on each side into a shallower slope above a steeper one
  • Warren
    Trusses that have inclined web members forming a series of equilateral triangles
  • Space frame
    A long-spanning three-dimensional plate structure based on the rigidity of the triangle and composed of linear elements subject only to axial tension or compression
  • Soffit
    The underside of an overhanging roof eave
  • Ridge board
    Is a nonstructural horizontal member to which the upper ends of the rafters are aligned and fastened
  • Knee
    Are short walls supporting rafters at some intermediate position along their length
  • Steel truss
    Are generally fabricated by welding or bolting structural angles and tees together to form the triangulated framework
  • Hip jack
    Are jack rafters extending from a wall plate to a hip rafter
  • Crescent
    Trusses that have both top and bottom chords curving upward from a common point at each side
  • Ridge
    The horizontal line of intersection at the top between two sloping planes of a roof
  • Gable roof
    They slope downward in two parts from a central ridge, so as to form a gable at each end
  • Roof
    Primary sheltering element for the interior spaces of a building
  • Shed
    A roof having a single slope
  • Tetrahedron
    The simplest spatial unit of a space frame having four joints and six structural members
  • Bowstring
    Trusses that have a curved top chord meeting a straight bottom chord at each end
  • Rigid frame
    Consist of two column and a beam or girder that are rigidly connected at their joints