Floor System Flashcards
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Questions and Answers

For a building project, the types and quality of materials, methods of construction, and location of the structure are included in the?

specifications

Which of the following would not be shown on a floor plan?

  • Doors
  • Walls
  • Footings (correct)
  • Windows
  • Which of the following drawings show the location of floor openings for stairways?

  • Roof plan
  • Site plan
  • Elevation plan
  • Floor plan (correct)
  • When constructing wall panels for a platform-framed structure, the wall panels?

    <p>are assembled on the subfloor</p> Signup and view all the answers

    After raising a wall panel for a platform frame, the panel should first be fastened to the?

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

    The type of construction where each floor of a structure is built as an individual unit is?

    <p>platform framing</p> Signup and view all the answers

    Sill plates are normally made from?

    <p>2 x 8 lumber</p> Signup and view all the answers

    Building codes require any components in contact with the ground, masonry, or concrete, such as sill plates, to be?

    <p>made from treated lumber</p> Signup and view all the answers

    For a given size, the type of support with the most strength is the?

    <p>steel I-beam</p> Signup and view all the answers

    A rule of thumb for constructing girder pockets is that the pocket should be at least ___ wider than the girder and the girder must have a bearing on the wall of at least?

    <p>1&quot;; 4&quot;</p> Signup and view all the answers

    Which of the following is not an advantage of the metal web floor truss?

    <p>They are more widely used than wood web trusses</p> Signup and view all the answers

    Before starting to install sill plates,?

    <p>check the foundation for squareness</p> Signup and view all the answers

    Why is the first floor usually framed before the foundation is backfilled?

    <p>To help the foundation withstand lateral pressure</p> Signup and view all the answers

    The level of the building's floors and walls will be affected if the sill plate is?

    <p>not level</p> Signup and view all the answers

    To check for level of a sill plate, which tool is not typically recommended?

    <p>Plumb bob</p> Signup and view all the answers

    When nailing a rim joist to the sill plate, use?

    <p>8d nails at 6&quot; OC</p> Signup and view all the answers

    When installing a built-up beam, the joints should be positioned?

    <p>directly over support columns</p> Signup and view all the answers

    When installing a joist, end-nail it to the header joist and toenail it to the?

    <p>sill plate</p> Signup and view all the answers

    In which of the following situations would double floor joists not be needed?

    <p>Under loadbearing interior walls running perpendicular to the joists</p> Signup and view all the answers

    The two header joists and the two end joists form the?

    <p>rim joist</p> Signup and view all the answers

    When framing a floor opening, the short pieces installed parallel to the common joists are called?

    <p>tail joists</p> Signup and view all the answers

    The bottom ends of cross-bridging are not nailed in place until?

    <p>the subfloor is installed</p> Signup and view all the answers

    When installing 4' x 8' subfloor panels, how far should you measure in from one side of the rim joist?

    <p>4'</p> Signup and view all the answers

    Decks or porches that are extending over a foundation wall, and are unsupported beyond the wall, are called?

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

    The document listing the types and dimensions of materials needed for a job is called the?

    <p>material takeoff</p> Signup and view all the answers

    How many lineal feet of 2 x 8 sill material are needed for a 60'x28'?

    <p>176'</p> Signup and view all the answers

    How many lineal feet of 2 x 12s are needed for 60' of beam? Use three 2x12s.

    <p>180'</p> Signup and view all the answers

    How many 4' x 8' panels of subflooring are needed for a 60'x28'?

    <p>53</p> Signup and view all the answers

    Long pans or dome pans are used to form voids on the underside of slabs in?

    <p>concrete joist systems</p> Signup and view all the answers

    Modular panel and pedestal (access floor) systems are used?

    <p>where a large amount of cabling is required</p> Signup and view all the answers

    Study Notes

    Building Specifications and Planning

    • Specifications include the types and quality of materials, construction methods, and structure location.
    • Floor plans show the layout of spaces but do not display footings.

    Floor Layout and Construction

    • Floor plans indicate the location of floor openings for stairways.
    • Wall panels in platform-frame structures are assembled on the subfloor.
    • After raising a wall panel, secure it first to the subfloor.

    Types of Framing and Materials

    • Platform framing features individual units for each floor, enhancing construction flexibility.
    • Sill plates are typically made from 2 x 8 lumber and must be treated when in contact with ground-related materials.
    • Steel I-beams provide the greatest strength for structural support compared to other materials.

    Construction Guidelines

    • Girder pockets should be at least 1 inch wider than the girder, with a minimum wall bearing of 4 inches.
    • The foundation's squareness should be checked before installing sill plates to ensure proper alignment.
    • The first floor is framed prior to backfilling to help the foundation bear lateral pressure.

    Leveling and Installation Techniques

    • A level sill plate is crucial as any imbalance affects the overall structure.
    • A plumb bob is not the recommended tool for checking a sill plate’s level.
    • Use 8d nails at 6-inch on-center spacing when nailing a rim joist to the sill plate.

    Joist and Beam Installation

    • Joints of built-up beams should align over support columns for optimal strength.
    • Joists should be end-nailed to the header joist and toenailed to the sill plate.
    • Double floor joists are unnecessary under load-bearing interior walls that run perpendicular to joists.

    Framing Openings and Components

    • The rim joist is formed by two header joists and two end joists.
    • Tail joists are short pieces installed parallel to common joists when framing floor openings.

    Bridging and Subfloor Installation

    • Bottom ends of cross-bridging remain un-nailed until after subfloor installation.
    • When placing 4' x 8' subfloor panels, measure 4 feet from one side of the rim joist for proper alignment.

    Structural Features

    • Cantilevered decks or porches extend unsupported over foundation walls, requiring specific construction techniques.
    • A material takeoff document summarizes required materials with dimensions for a job.

    Measurement and Material Requirements

    • For a 60' x 28' construction, 176 feet of 2 x 8 sill material is needed.
    • Three 2 x 12s for a 60-foot beam necessitate 180 feet of material.
    • A total of 53 panels of 4' x 8' subflooring is required for the same 60' x 28' area.

    Advanced Systems

    • Concrete joist systems use long pans or dome pans to create voids underneath slabs.
    • Modular panel and pedestal systems are optimal in environments demanding extensive cabling infrastructures.

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    Test your knowledge of floor system terminology with these flashcards. Each card presents a word related to building construction, along with its definition, helping you grasp essential concepts in the field. Perfect for students and professionals alike.

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