NBC 2015 - Section 9.4, 9.5, 9.6
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Questions and Answers

According to the National Building Code of Canada 2015, what is the basic snow load roof factor for roofs where the entire width does not exceed 4.3 m?

  • 0.35
  • 0.55
  • 0.45 (correct)
  • 1.1
  • What is the minimum specified snow load according to the National Building Code of Canada 2015?

  • 1.9 kPa
  • 0.45 kPa
  • 1 kPa (correct)
  • 4.3 kPa
  • According to the National Building Code of Canada 2015, what is the maximum deflection ratio for ceiling joists supporting plaster or gypsum board?

  • 1/480
  • 1/360 (correct)
  • 1/180
  • 1/240
  • What is the maximum allowable bearing pressure for dense or compact sand or gravel according to Table 9.4.4.1 of the National Building Code of Canada 2015?

    <p>150 kPa</p> Signup and view all the answers

    According to the National Building Code of Canada 2015, what is the maximum allowable bearing pressure for soft clay?

    <p>40 kPa</p> Signup and view all the answers

    According to the National Building Code of Canada 2015, what is the minimum clear height required in a storage garage?

    <p>2 m</p> Signup and view all the answers

    According to the National Building Code of Canada 2015, what is the minimum unobstructed width required for a hallway within a dwelling unit?

    <p>860 mm</p> Signup and view all the answers

    According to the National Building Code of Canada 2015, what is the minimum width required for a doorway opening in a bathroom?

    <p>610 mm</p> Signup and view all the answers

    According to the National Building Code of Canada 2015, what is the minimum height required for a doorway to a public water-closet room?

    <p>2.03 m</p> Signup and view all the answers

    According to the National Building Code of Canada 2015, which material standard should glass conform to?

    <p>CAN/CGSB-12.1-M</p> Signup and view all the answers

    According to Table 9.6.1.3.-F in the National Building Code of Canada 2015, what is the maximum glass area for annealed glass with a thickness of 5 mm?

    <p>0.92 m2</p> Signup and view all the answers

    According to the information provided, what is the maximum hourly wind pressure with one chance in fifty of being exceeded in any one year?

    <p>10.97</p> Signup and view all the answers

    Based on the data in Table 9.6.1.3.-F, what is the maximum glass area for tempered glass with a thickness of 8 mm?

    <p>2.52 m2</p> Signup and view all the answers

    According to the information provided, what is the maximum glass area for wired glass with a thickness of 4 mm?

    <p>0.62 m2</p> Signup and view all the answers

    Based on the data in Table 9.6.1.3.-F, what is the maximum glass area for heat-strengthened glass with a thickness of 6 mm?

    <p>1.72 m2</p> Signup and view all the answers

    According to Section 9.4.1.1, what are the three options for designing structural members and their connections?

    <p>All of the above</p> Signup and view all the answers

    According to Clause (1)(b) or (c), what is the maximum specified live load on the floor?

    <p>2.4 kPa</p> Signup and view all the answers

    What are the requirements for light-frame constructions according to Section 9.4.2.1?

    <p>All of the above</p> Signup and view all the answers

    What is the maximum deflection of the structural roof members according to Article 9.4.3.1?

    <p>Not specified</p> Signup and view all the answers

    What information needs to be determined according to Subsection 1.1.3 for structural design?

    <p>All of the above</p> Signup and view all the answers

    According to the National Building Code of Canada 2015 Volume 2 Division B, what is the allowable bearing pressure for a foundation that bears on gravel, sand, or silt, with the water table within a distance below the bearing surface equal to the width of the foundation?

    <p>50% of that determined in Article 9.4.4.1</p> Signup and view all the answers

    In what situations should measures be taken to preclude or reduce soil movement that may damage a building's stability and the performance of assemblies?

    <p>All of the above</p> Signup and view all the answers

    According to the National Building Code of Canada 2015 Volume 2 Division B, how should walls supporting drained earth be designed?

    <p>Both a) and b)</p> Signup and view all the answers

    According to the National Building Code of Canada 2015 Volume 2 Division B, how should walls supporting other than drained earth be designed?

    <p>Both a) and b)</p> Signup and view all the answers

    According to the National Building Code of Canada 2015 Volume 2 Division B, how should dimensions of rooms or spaces be measured?

    <p>Both a) and b)</p> Signup and view all the answers

    According to Table 9.6.1.3.-A, what is the maximum glass area for windows in areas where the 1-in-50 Hourly Wind Pressure (HWP) is less than 0.55 kPa, for annealed glass with a thickness of 6 mm?

    <p>2.04 m2</p> Signup and view all the answers

    According to Table 9.6.1.3.-B, what is the maximum glass area for windows in areas where the 1-in-50 Hourly Wind Pressure (HWP) is less than 0.75 kPa, for tempered glass with a thickness of 5 mm?

    <p>3.07 m2</p> Signup and view all the answers

    According to Table 9.6.1.3.-C, what is the maximum glass area for windows in areas where the 1-in-50 Hourly Wind Pressure (HWP) is less than 1.00 kPa, for heat-strengthened glass with a thickness of 8 mm?

    <p>5.03 m2</p> Signup and view all the answers

    According to Table 9.6.1.3.-D, what is the maximum glass area for windows in areas where the 1-in-50 Hourly Wind Pressure (HWP) is less than 0.55 kPa in open terrain, for annealed glass with a thickness of 6 mm?

    <p>2.33 m2</p> Signup and view all the answers

    According to Table 9.6.1.3.-E, what is the maximum glass area for windows in areas where the 1-in-50 Hourly Wind Pressure (HWP) is less than 0.75 kPa in open terrain, for tempered glass with a thickness of 5 mm?

    <p>2.44 m2</p> Signup and view all the answers

    The maximum hourly wind pressure with one chance in fifty of being exceeded in any one year is provided in Appendix C.

    <p>True</p> Signup and view all the answers

    Maximum glass area values apply to IG units of two identical lites spaced at 12.7 mm.

    <p>True</p> Signup and view all the answers

    The maximum glass area for annealed glass with a thickness of 2.5 mm is 0.25 m^2.

    <p>True</p> Signup and view all the answers

    The maximum glass area for tempered glass with a thickness of 12 mm is 2.63 m^2.

    <p>True</p> Signup and view all the answers

    The maximum glass area for wired glass with a thickness of 4 mm is 0.57 m^2.

    <p>True</p> Signup and view all the answers

    The maximum glass area for heat-strengthened glass with a thickness of 5 mm is 1.72 m^2.

    <p>True</p> Signup and view all the answers

    The maximum glass area for annealed glass with a thickness of 8 mm is 1.28 m^2.

    <p>True</p> Signup and view all the answers

    The maximum glass area for tempered glass with a thickness of 6 mm is 1.94 m^2.

    <p>True</p> Signup and view all the answers

    The maximum glass area for factory-sealed insulated glass units with a thickness of 3 mm is 0.42 m^2.

    <p>True</p> Signup and view all the answers

    The maximum glass area for wired glass with a thickness of 6 mm is 1.17 m^2.

    <p>True</p> Signup and view all the answers

    Study Notes

    Here are the study notes for the text:

    • Structural Requirements*
    • Design Requirements:
      • Structural members and their connections must conform to the requirements provided in this Part.
      • Design according to good engineering practice, such as that provided in CWC 2014, "Engineering Guide for Wood Frame Construction."
      • Design according to Part 4, using the loads and deflection and vibration limits specified.
    • Specified Loads*
    • Application:
      • Applies to light-frame constructions with small repetitive structural members.
      • Requirements for roof, wall, and floor planes.
    • Specified Snow Loads:
      • Calculated using the formula: S = Cb * Ss + Sr.
      • Minimum specified snow load: 1 kPa.
      • Exceptions for bow string, arch or semi-circular roof trusses.
    • Platforms Subject to Snow and Occupancy Loads:
      • Balconies, decks, and other accessible exterior platforms must be designed to carry a specified roof snow load or 1.9 kPa, whichever is greater.
    • Attics and Roof Spaces:
      • Ceiling joists or truss bottom chords in residential attic or roof spaces must be designed for a total specified load of not less than 0.35 kPa.
    • Deflections*
    • Maximum Deflections:
      • Maximum deflection of structural members must conform to Table 9.4.3.1.
      • Dead loads need not be considered in computing deflections.
    • Foundation Conditions*
    • Allowable Bearing Pressures:
      • Footing sizes for shallow foundations must be determined in accordance with Section 9.15 or designed in accordance with Section 4.2.
      • Maximum allowable bearing pressures for different soil and rock types are specified in Table 9.4.4.1.
    • Design of Areas and Spaces*
    • Method of Measurement:
      • Dimensions of rooms or spaces must be measured between finished wall surfaces and between finished floor and ceiling surfaces.
    • Combination Rooms:
      • Two or more areas are considered a combination room if the opening between the areas occupies the larger of 3 m2 or 40% or more of the area of the wall.
    • Ceiling Heights:
      • Ceiling heights and clear heights in rooms or spaces in residential occupancies must conform to Table 9.5.3.1.
    • Doorway Sizes:
      • Doorway openings within dwelling units and houses with a secondary suite must be designed to accommodate doors of a minimum size specified in Table 9.5.5.1.
    • Glass*
    • Material Standards for Glass:
      • Glass must conform to various standards, including CAN/CGSB-12.1-M, "Tempered or Laminated Safety Glass."
    • Structural Sufficiency of Glass:
      • Glass must be designed in conformance with CAN/CGSB-12.20-M, "Structural Design of Glass for Buildings."
      • Maximum glass area values for windows in areas with different hourly wind pressures are specified in Tables 9.6.1.3.-A to 9.6.1.3.-F.

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    Test your knowledge of building code requirements for space area, mezzanines, storage garages, and hallways. Learn about minimum measurements for floor space, ceiling height, and hallway width.

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