Wall Framing Notes

Wall Framing Overview

  • Course: CME 342 by Paul Crovella

Standard Framing

  • Common spacings: 16" o.c. (for 2x4s) and 24" o.c. (for 2x6s)

  • Built upon 48" x 96" sheathing modules

  • Pre-cut studs are typically 92 5/8" long; stud height must be less than 8' for proper sheathing attachment

Special Framing

  • Standard members used around openings, corners, and intersections

    • Rough Openings: Built larger for plumbing and shimming; e.g., 36" door in 38.5" rough opening

    • Framing - Corners: Provides nailing surfaces for sheathing and drywall; should allow for insulation

    • Framing - Partition Wall Intersection: Requires nailing surfaces at corners; can use partition blocks or clips

    • Blocking: Installed for attaching various fixtures (e.g., plumbing, cabinets)

Headers for Load Bearing and Non-Load Bearing Walls

  • Headers carry loads from upper floors/roofs; design depends on load and opening width

  • Load-bearing walls support the weight of floors/roofs and require different headers and member sizes compared to non-load-bearing walls

  • Minimize wood usage

Wall Bracing

  • Walls squared using wood let-in, metal bracing, or structural sheathing

Advanced Framing Techniques

  • Optimize wood usage, limit non-load bearing applications

  • Common principles: design on 2' module, limit waste to < 10%, use 2x4s at 24" o.c.

Steel Framing

  • Steel framing is an alternative to wood, offering superior strength, fire resistance, and dimensional stability, commonly used in commercial and some residential construction.

Estimating for Framing

  • Conventional method: 3x lineal wall measure for plates; divide lineal measure for studs based on spacing

  • Advanced method: 2x lineal wall measure for plates; fewer headers needed