This Specification provides materials criteria and fabrication requirements for unbonded single-strand tendons used in nonaggressive and aggressive environments. This Specification is not intended to apply to nonstructural elements and applications@ which might include topping slabs@ waterproofing slabs-on-fill@ and posttensioning used only for control of cracking or deflection. For nonflexural or membrane type structures primarily under tensile forces@ the provisions apply where appropriate. Units??Values stated in inch-pound units are to be regarded as standard. Values given in parentheses are mathematical conversion to SI Units that are provided for information only@ and are not considered standard.