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ACI 373R

97th Edition, January 1, 1997

Complete Document

Design and Construction of Circular Prestressed Concrete Structures with Circumferential Tendons

Includes all amendments and changes through Reapproval Notice , 2010


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Product Details:

  • Revision: 97th Edition, January 1, 1997
  • Published Date: January 2010
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: American Concrete Institute (ACI)
  • Page Count: 26
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

The recommendations in this report are intended to supplement the general requirements for reinforced concrete and prestressed concrete design, materials and construction, given in ACI 318, ACI 301 and ACI 350R.

This report is concerned principally with recommendations for circular prestressed concrete structures for liquid storage. The recommendations contained here may also be applied to circular structures containing low-pressure gases, dry materials, chemicals, or other materials capable of creating outward pressures. The recommendations may also be applied to domed concrete roofs over other types of circular structures. Liquid storage materials include water, wastewater, process liquids, cement slurry, petroleum, and other liquid products. Gas storage materials include gaseous by-products of waste treatment processes and other gaseous material. Dry storage materials include grain, cement, sugar, and other dry granular products.

The recommendations in this report may also be applicable to the repair of tanks using externally applied tendons.

Design and construction recommendations cover the following elements or components of tendon tanks:

a. Floors

• Prestressed Concrete

• Reinforced Concrete

b. Floor-Wall Joints

• Hinged

• Fixed

• Partially Fixed

• Unrestrained

• Changing Restraint

c. Walls

• Cast-in-Place Concrete

• Precast Concrete

d. Wall-Roof Joints

• Hinged

• Fixed

• Partially Fixed

• Free

e. Roofs

• Concrete Dome Roofs with Prestressed Dome Ring

(1) Cast-in-place Concrete.

(2) Shotcrete.

• Other Roofs

(1) Prestressed Concrete.

(2) Reinforced Concrete.

f. Wall and Dome Ring Prestressing Methods

• Circumferential

(1) Individual high-strength strands in plastic sheaths or multiple high-strength strand tendons in ducts positioned within the wall and post-tensioned after placement and curing of the wall concrete, as shown in Fig. 1.1.

(2) Individual or multiple high-strength strands and, less frequently, individual high-strength bar tendons, prestressed after being positioned on the exterior surface of the wall.

• Vertical

(1) Individual or multiple high-strength strand or individual high-strength bar tendons, enclosed in sheathing or ducts within the wall, anchored near the wall joints at the bottom and top of the wall.

(2) Pretensioned high-strength strands in precast panels.