Using allowance error as the dimesion was proper, whereas adopting standarderror as the dimension might cause the high frenquence rework of compartment inventory.

A discussion for defines bounds of allowable deviation of construction works in site;

In combination with engineering practice, statistics and analyses are carried out to the installation deviation of cylinders in bed-seated cylindrical breakwater engineering and suggestions on determination of the allowable deviation are proposed.

The allowable variation of cover depth to the steel in reinforced concrete is of significant influence upon the durability of reinforced concrete for maritime works.

The paper presents a study and discussions on the determination of the allowable variation in the thickness of concrete cover to reinforcement so as to rationally and effectively control the allowable variation in construction of concrete cover to improve the useful life of concrete structures fo.

It gives a brief introduction to the method of pile collision calculation by Excel software (electronic form) and correction of pile position parameters when considering the in fluence of piling allowable variation during construction of pile foundation for high－ piled wharf.