The committee report gives design & construction requirements for concrete silos covered in "Recommended Practice for Design and Construction of Reinforced Concrete Bins, Silos, and Bunkers for Storing Granular Materials (ACI 313-77) & Commentary" when they are reinforced with prestressing steel. This document may be considered at some future date for inclusion as a chapter in ACI 313-77 & its commentary. For this reason it is written in a language similar to that of the standard.