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Fine Homebuilding Project Guides

Framing

Guide Home
Chapter
  • Introduction to Framing
  • Framing Tools, Techniques, and Materials
  • Framing Floors
  • Framing Walls
  • Framing Stairs
  • Framing Roofs
  • Efficient Framing Methods
  • Timber Framing
How it Works

Anatomy of a Stud-Framed Wall

Understanding the purpose of each framing member–particularly studs, plates, and headers–will help you learn how to properly frame bearing and nonbearing walls.

By Mike Guertin, Rick Arnold
Article Image

Wall plates

A wall is a collection of studs (usually sized 2×4 or 2×6) equally spaced (usually 16 in. or 24 in. on center) and sandwiched between top and bottom plates. The top plate can be either single or double. Double plating is most common on load-bearing walls unless the roof rafters or trusses and floor joists stack directly over the studs in the wall, then a single top plate can be used.

wall plates diagram

Headers

Large openings in the wall are made for windows and doors. When the opening is greater in width than the stud spacing — and most windows are wider than 24 in. — then a header must be inserted to carry the load of the interrupted stud(s). A header is a simple beam sized to support the load above the opening it spans.

headers diagram

Jack studs and king studs

jack studs and king studs

The header is supported by a jack stud at each end. Jacks, sometimes called trimmers, fit under each end of a header, and they transfer the load that the header carries down to the bottom plate and the framing beneath. Nailed to the jacks are full-height studs called king studs; they support the assembly between the plates. Sometimes jacks must be doubled on wide openings so there’s enough supporting surface for the header to bear on. Jacks can be replaced with a steel header hanger attached to the king stud.

Saddles and cripples

A saddle (also called a sill) forms the bottom of a window opening. It’s a piece of 2x stock laid flat and nailed between the jacks. Cripples are short pieces of 2x stock that run underneath the saddle. And, depending on a header’s height, cripples can run from the header to the plate. Cripples are located at the points where a common stud would have been located had it not been interrupted by the opening.

Mike Guertin and Rick Arnold are professional builders in Rhode Island with over 20 years experience building custom homes. In addition to being contributing editors for Fine Homebulding magazine, they have written numerous articles on homebuilding, and they conduct regular seminars for builders.

More on Framing:

Video: Top 10 Tips for Wall Framing Layout on a New Subfloor – Framer Scott Grice and veteran builder Larry Haun hash out the the best way to measure and mark wall framing for a new Habitat for Humanity house

Master Carpenter: Fast and Accurate Wall Framing – In this video, pro builder Mike Norton teaches fast and accurate wall framing and shares time-saving tips for laying out, assembling, and raising walls.

The Future of Framing Is Here – We’re extremely efficient at framing houses nowadays, but the way we frame them is extremely inefficient. In this article by Joseph Lstiburek, the cofounder of Building Science Corp. in Westford, Mass., you’ll learn about the most efficient framing techniques.

Fixing Framing Problems: Use Your Eyes to Find Crooked Studs, Headers, and Beams – In this Building Skills video framer Scott Grice demonstrates a few easy ways that you can use line-of-sight to identify serious issues before they’re buried under drywall.

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Framing

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Introduction to Framing
  • House Framing Concepts, Tips, and More
Framing Tools, Techniques, and Materials
  • Tools
  • Techniques
  • Framing Lumber
  • Steel
Framing Floors
  • Floor Framing
  • Engineered Floors
  • Floor Sheathing
Framing Walls
  • Wall Framing Basics
  • Layout
  • Wall Assembly
  • Raising and Straightening Walls
  • Framing Rough Openings
  • Blocking
Framing Stairs
  • Stair Layout
  • Building Stairs
Framing Roofs
  • Roof-Framing Basics
  • Roof Design
  • Laying Out and Cutting Rafters
  • Framing Valleys
  • Working with Trusses
  • Dormers
  • Special Situations
Efficient Framing Methods
  • Advanced Framing
  • Double-Stud Walls
Timber Framing
  • Timber-Frame Construction
  • Timber-Frame Design

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