Reinforced concrete walls

Figure 11.6 shows the pressures that act on a T-shaped gravity wall, assuming that a surcharge q exists at ground surface and the water table is located above formation level. The assumption is made that the wall's heel is wide enough for a Rankine zone to form within the backfill that sits on top of the wall's heel (see Section 11.4.4 for further discussion of this point).

Favourable or

Li il favourable?

Virtual plane

Backfill

Figure 11.6 shows the pressures that act on a T-shaped gravity wall, assuming that a surcharge q exists at ground surface and the water table is located above formation level. The assumption is made that the wall's heel is wide enough for a Rankine zone to form within the backfill that sits on top of the wall's heel (see Section 11.4.4 for further discussion of this point).

Favourable or

Li il favourable?

Virtual plane

Backfill

Earth Reinforced Concrete Wall

Water pressure

Favourable or Effective earth pressure unfavourable!

Uplift from water pressure U

Water pressure

Favourable or Effective earth pressure unfavourable!

Uplift from water pressure U

Figure 11.6. Earth pressures acting on a reinforced concrete wall

The horizontal total earth pressure oa acting on the virtual plane at depth z below ground surface is given by:1

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