JOHN'S SCHOOL SITE
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  • Home
    • Teacher Resources
    • My Teaching History
    • Design/Build History >
      • Gallery of Homes
  • Phone Portfolio
  • BIG PICTURE LEARNING - 11
    • Advisory Activities
    • Learning Plan
    • Exhibition
    • LTI
    • Projects
    • Rotation Classes
    • COMPETENCIES
  • Advisory
  • My Classes
    • Yearbook R2P1
    • Makerspace-Bench/Storage
    • Photoshop/Photography
    • Psychology of Money
    • Auto Maintenance
    • Photoshop Magic
    • Argue to Win
    • Mastering Chess
    • T Shirt Making
    • How to Build A House
    • Hamlet meets NIKE
    • Mobile Photo
    • Animating After Effects
    • 3D Modeling//Printing
    • Yearbook 18 >
      • Media Description
    • Newspaper 17-2
    • Graphics 17-2
    • Architecture 17-2
    • Core 17
    • Video Production 17
    • Former Classes >
      • CCFE aka Decisions >
        • Current Assignments-CCFE - Decisions
        • Portfolio Page
        • Interview Process
        • Personal Data Sheet Example
        • Assignments for CCFE Decisions
        • Resume
        • Letter of Application
        • Digital Portrait
      • Website Construction
  • Interests
    • I-Phone Photo Page
    • Samsung 5s
    • Remodel-Details
    • Travel
    • Old Shoes
  • Blog
  • Teaching not like Construction
  • Meyers Briggs-Big Pic
  • Puzzle
  • Media Resource Ideas
  • Sketchup ideas
  • Famous Photographer
  • Graphic Design Resources
  • Journalism Idea Generator
  • POW Toon Page
  • Henderson Free Press
  • Project Presentation
  • Photography 17 Backup
  • Ph-Blend Mode
  • My Story
  • Addition
JOHN'S SCHOOL SITE

Start with a strong foundation


All foundations begin with a footing. Single story houses have a concrete footing which is 6" thick and 12" wide. Two story houses have footings which are 8" thick and 16 inches wide or wider. In earthquake zones like Washington and Oregon there are usually two pieces of #4 (1/2" diameter) rebar suspended in the concrete.

Footings are placed under the frostline and on undisturbed earth.

Vertical sticks of #4 rebar are placed into the wet concrete footing to make a positive connection to the foundation wall. Sometimes a groove or keyway is added to the footing.
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Rebar is also placed in the foundation walls. The number of bars and spacing is determined by a number of factors. The purpose of the rebar is to provide tensile strength to the concrete. Over time it will prevent cracking, settling and heaving.
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J-bolts are used to anchor sill plates which floor joists can attach to to anchor the building to the foundation. J-bolts get their name from the bend in the bolt which normally fits under a piece of horizontal #4 rebar to prevent uplift.
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