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Foundations for Domestic Developments

Foundations for Domestic Developments. Different types of foundation. Strip Pile. Concrete Strip Foundation for Cavity Wall. Foundations. Here we see the lines marked out on the ground. These are the guide lines used by the excavator operator to remove the foundation soil.

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Foundations for Domestic Developments

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  1. Foundations for Domestic Developments

  2. Different types of foundation • Strip • Pile

  3. Concrete Strip Foundationfor Cavity Wall

  4. Foundations • Here we see the lines marked out on the ground. • These are the guide lines used by the excavator operator to remove the foundation soil. • Lines are put on from the crossheads.

  5. Marking out foundations • Previous slide shows double lines to indicate width of foundation. • An alternative is to use a single centre line. • Dry lime or sawdust is used to mark out the foundations.

  6. Foundations • All structures require a foundation. • The foundation supports the building loads and distributes them to the surrounding subsoil's. • Foundation type must suit building and site. • Choice has to be made.

  7. Foundations crosshead • A crosshead in position. • Used when setting out the building. • Dimensions are marked out on horizontal crosshead by the engineer. • Dimensions for founds, walls and frameworks clearly marked.

  8. Foundations • Trench is excavated for the strip foundation. • Wooden peg are driven in at suitable intervals. • These pegs are levelled to the depth of concrete. • Concrete will be poured to the depth of the pegs. • Concrete left to harden before building starts.

  9. Foundations • Here we see some concrete poured into the foundation trench. • Reinforcement is being placed to give added strength to the foundation. • Concrete finally poured to top of pegs.

  10. Foundations • Foundation concrete has being allowed to gain sufficient strength. • Bricklayer will now commence building the footings to the building. • Footings are built up to ground level.

  11. Pile Foundations • Pile foundations are used underling substrata is weak. • The most cost affective solution is to use driven pre-cast concrete piles. • These piles must be driven to suitable depth of bearing strata.

  12. Pile Foundations • Piles are cut of at ground level to expose reinforcement. • Permanent formwork is built to support concrete. • Note wall are built from a concrete mud mat.

  13. Stepped Strip Foundations • These are used on sloping sites to reduce the amount of excavation and materials needed to produce an adequate foundation.

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