Serviceability limit states

(1)P The criteria associated with serviceability limit states shall be defined in the project specification.

Note : Guidance may be found in design Eurocodes.

(2) Unless otherwise specified, limit state requirements for the final stage should be adopted for the execution stage.

(3) Serviceability requirements for auxiliary structures should be defined in order to avoid any deformation and displacement which affect the appearance or effective use of the structure or cause damage to finishes or non-structural elements.

(4) Operations which may cause excessive cracking and/or early deflection during execution and which may violate the durability, fitness for use and/or esthetic appearance in the final stage should be avoided.

(5) Instead of taking account of the load effects due to shrinkage and temperature by means of design, appropriate detailing provisions may be selected to minimize these load effects.

(6) Unless otherwise specified, serviceability criteria requiring the consideration of frequent combinations need not be considered during execution.

Note . For this reason, no value of V|/j factors is given in annexes A and B .Where frequent values of some special variable actions need to be considered, these values should be defined in the project specification.

(7) Unless otherwise specified, for concrete bridges, serviceability criteria requiring the consideration of infrequent combinations as defined in ENV 1991-3 need not be considered during execution.

Note : For this reason, no value of vj/'j factors is given in annex B.

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