The recommendations supplement the general requirements for reinforced concrete and prestressed concrete design and construction given in AC1 318-99@ AC1 350-01@ and AC1 301. Design and construction recommendations cover the following elements or components of circularwrapped prestressed concrete structures:I. Floors Reinforced concrete II. Floor-wall connections Hinged; Fixed; Partially fixed; Unrestrained; and Changing restraint. III. Walls?Cast-in-place concrete walls with steel diaphragms or vertical prestressing; Shotcrete walls with steel diaphragms; and Precast concrete wails with steel diaphragms.IV. Wall-roof connections?Hinged; Fixed; Partially fixed; and Unrestrained. V. Roofs?Concrete dome roofs with prestressed dome ring@ constructed with cast-in-place concrete@ shotcrete@ or precast concrete; and Flat concrete roofs. VI. Wall and dome ring prestressing systems Circumferential prestressing using wrapped wire or strand systems; and Vertical prestressing using single or multiple highstrength strands@ bars@ or wires.Objective?This report provides guidance for individuals responsible for the design and construction of circular prestressed concrete structures by recommending practices used in successful structures.