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AWWA C305-24 CFRP Renewal and Strengthening of Prestressed Concrete Cylinder Pipe (PCCP), 2024
- Foreword [Go to Page]
- I. Introduction [Go to Page]
- I.A. Background. Prestressed concrete cylinder pipe (PCCP) has had a long and diverse history with many changes in standards and materials. The earliest application of PCCP in the United States was in 1942. That pipe, which is now known as lined-cylinder [Go to Page]
- I.B. History. Utilities have taken steps in advance of failure to replace identified degraded pipes or repair them by encasing the degraded pipe in a reinforced concrete block or steel plate wrap, post-tensioning by wrapping tendons around the pipe, or re [Go to Page]
- I.C. Water Quality. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for dire
- II. Special Issues. [Go to Page]
- II.A. Intent and Suitability. This standard describes the procedures for material selection, design, installation, and quality control and quality assurance of the CFRP renewal and strengthening of PCCP. This standard provides requirements and recommendat [Go to Page]
- II.B. Advisory Information on Product Application. The successful application of CFRP renewal or strengthening of PCCP will be the product of design, materials, and installation. CFRP system manufacturers and installers should be contacted for detailed pr [Go to Page]
- II.C. Qualifications. CFRP renewal and strengthening of PCCP requires understanding of all the physical, chemical, and environmental factors that influence a successful and quality installation. Recognizing the importance of the experience and qualificati
- II.D. Contractual Relations. AWWA standards do not include provisions involving business relations. Such relations are a proper topic for purchaser specifications but not for AWWA standards. Warranties or guarantees are examples of such relations, as well
- II.E. Limitations. The CFRP system is best suited for the renewal of degraded PCCP with broken wires with a relatively smooth interior surface. When the inner core concrete is degraded partially through the wall thickness (e.g., due to the chemistry of wa
- III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular application being considered. [Go to Page]
- III.A. Purchaser Options and Alternatives. The following information should be provided by the purchaser in a typical bid package related to CFRP renewal and strengthening of PCCP: [Go to Page]
- III.B. Modification to Standard. Any modification to the provisions, definitions, or terminology in this standard shall be provided by the purchaser.
- IV. Major Revisions. Major changes made to the standard in this edition include the following:
- V. Comments. If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or e-mail at standards@awwa.org.
- AWWA Standard
- SECTION 1: GENERAL
- Sec. 1.1 Scope, Purpose, and Application
- Sec. 1.2 Definitions
- Sec. 1.3 References
- Sec 1.4 Notation
- Figure 1 Ovality (a) and waviness (b) imperfections
- Sec. 2.2 Design Approach
- Sec. 2.3 Design Procedure
- Sec. 2.4 Design Loads
- Sec. 2.5 Design Limit States
- Sec. 2.6 Determination of Material Capacities for Design
- Sec. 2.7 Design for Combined Short-Term and Long-Term Loading
- Sec. 2.8 Circumferential Design of CFRP [Go to Page]
