TOLERANCE ANALYSIS AS THE WAY TO COST-EFFECTIVE STRUCTURES

摘要

The constructed steel structures accumulate deviations during manufacturing, fabrication and erection process. Coincident occurrence of all extreme deviations is highly improbable, however it is possible and may cause troubles during structure erection and improper structure behaviour as well Relevant tolerances can be achieved by good workmanship and proper site supervision. This can be improved by more accurate techniques with are likely to incur greater costs. However, it is neither economic nor necessary to achieve extreme accuracy. The short review of the national and European standards concerning execution tolerances is done and different attitude to applying tolerances in Europe is presented. The relation between quality of the newly constructed structure and tolerances is shown. The tolerance analysis is described as the way to select the connections in the structure that are sensitive to deviations cumulating. Proposal of applying tolerance classes to fabricated steel elements as the way of rational cost distribution has been presented.