Stainless Steel in Indoor Swimming Pool Buildings

This resource is an article produced by Nancy Baddoo and Peter Cutler that explains how to select the most suitable stainless steel grade for indoor swimming pools. Firstly the article discusses the advantages of stainless steel in the highly corrosive environment of an indoor pool and describes some of the failures due to poor grade selection that have occurred in the last 10 years due to chloride stress corrosion cracking (SCC). The indoor swimming pool environment is then explained and the causes and processes behind SCC given. Stainless steel as a material is described and a table of characteristic properties of typical grades used in indoor swimming pools is presented. Finally guidance for grade selection based on the level of concern for SCC and positioning of the element is given, summarizing the suitable grades in each case. It is concluded that stainless steels remain the most appropriate material for indoor swimming pools but careful grade selection and periodic inspection on safety-critical, load-bearing elements is essential.