The design of footings to Eurocode 7 involves checking that the ground has sufficient bearing resistance to withstand vertical actions, sufficient sliding resistance to withstand horizontal and inclined actions, and sufficient stiffness to prevent unacceptable settlement. The first two of these guard against ultimate limit states and the last against a serviceability limit state.
Verification of ultimate limit states is demonstrated by satisfying the inequalities:
(where the symbols are defined in Section 10.3). These equations are merely specific forms of:
Ed < Rd which is discussed at length in Chapter 6.
Verification of serviceability limit states (SLSs) is demonstrated by satisfying the inequality:
(where the symbols are defined in Section 10.6). This equation is merely a specific form of:
E'd- d which is discussed at length in Chapter 8. Alternatively, SLSs may be verified by satisfying:
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