B70-97

1. Scope 1.1 This Standard covers cast iron soil pipe and fittings for installation in gravity-flow plumbing systems inside and outside of buildings, above and below grade. 1.2 This Standard covers requirements for cast iron soil pipe, fittings, backwater valves, and means of joining these components, including dimensions, material specifications, crush strength, pressure testing, and marking. Note: Dimensions shown in brackets are for information purposes. 1.3 Notes to the text do not include mandatory or alternative requirements. The purpose of a Note is to separate from the text explanatory or informative material that is not properly a part of the Standard. Notes to figures and tables are to be considered part of the figure or table and are written as mandatory requirements. Legends to figures are to be considered mandatory requirements.