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footings.md

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Footing and housing provisions including slabs and reinforcements

Footings (geotechnical engineering) history:

  • 8000 BCE Aboriginal Aqua Engineering for Eel food farming cultivation in the South of Australia
  • 2000 BCE floor control, irrigation, burial sites in Egypt, Mesopotamia, Indus Valley and
  • 10th Century Ancient Greece: post in ground, padstones or staddle stone and rubble trench foundations
  • 1717 Henri Gautier French Royal Engineer recognises "natural slope in soils" leading to the "angle of repose"
  • 1773 Charles Coulomb army captain designing military ramparts defines "slip plane angle" and "soil cohesion friction" aka Mohr-Coulomb theory.
  • 1868 France Reinforced concrete invested by Joseph Monier, France 1868
  • 1925 Karl Terzghi publishes Erdbaumechanik defining "effective stress" and "shear strength" leading to equations of poroelasticity.

Reference documents

  • BD-002 Concrete structures (AS 3600)
  • WD-003 Welding of structures (AS 1554)
  • BD-006 Structural design actions (AS 1170)
  • BD-025 Residential slabs and footings (AS 2870)
  • BD-066 Tilt-up concrete construction (AS 3850)
  • BD-084 Steel reinforcing materials (AS/NZS 4671)
  • BD-090 Bridge design (AS 5100)
  • BD-098 Guide to residential pavements (AS 3727)

Terminology

Term Definition
Content Cell Content Cell
Content Cell Content Cell

Typical reference schematics

Black eagle damn schematic of footingsin 1892

image

Stiffened Raft design:

image