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Peltan Christian Primary School Perimeter Walls

Peltan Christian Primary School Perimeter Walls.

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Peltan Christian Primary School Perimeter Walls

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  1. Peltan Christian Primary School Perimeter Walls • Background: The current primary concern for the school is the lack of security. The addition of perimeter walls around the school grounds gives the school the security that they feel necessary to continue forward with further school improvements such as the possible implementation • of solar power. • Objectives: • Provide Security • Needs to be approx. 8 ft tall • Topped with broken glass • Safe/Appropriate Construction • Built to withstand earthquakes/weather • Built with appropriate standards –not over/under designed • Findings/Solutions: • Conversed with • Scott Michaels -local US contractor, builds CMU walls in houses, etc. • Carl Garner -soil engineer, knowledgeable about walls, and any other structure, has worked in Haiti • Don Johnson -works Haiti Outreach, familiar with local materials and building code/techniques • Gained confidence in footer dimensions • Gained knowledge about CMU construction techniques and availability of certain material in Haiti

  2. Footer • Most literature suggests that the depth and width of the footer should be approx. twice the width of the CMU • S. Michaels and C. Garner suggested this was an appropriate amount and that the soil was adequate for this • S. Michaels mentioned running 4 lengths of rebar in footer which ties into vertical rebar • Footer along columns (if columns are larger than the wall width) should be approx. 6-8” greater on either side

  3. Body • Walls need vertical supports • Typical Haitian wall construction usually has a concrete column every 10 to 12 feet or so (column consists of 4 vertical rebar • Scott Michaels suggested using a single vertical rebar inside a filled core of a CMU block every 3-4 ft • Vertical supports need to be tied into the footer and bond beam • C. Garner suggested the use of truss wire that can be placed after every three bricks or so for horizontal strength

  4. Bond Beam • A bond beam is necessary to tie all of the vertical rebar together • Scott Michaels suggest running 2 rebar along the top • Don Johnson didn’t think that bond beam blocks would be accessible • Bond beam blocks can be made from modifying typical CMUs • Typical Haiti construction pours bond beam without blocks

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