The purpose of this standard is to provide the minimum requirements for shop-applied cement\u2013mortar linings for ductile-iron pipe and ductile-iron and gray-iron fittings for potable water, raw water, wastewater, and reclaimed water systems, including requirements for cement, sand, water, and mortar; surface of pipe and fittings for lining; method and thickness of lining; and curing.<\/p>\n
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| 9<\/td>\n | Foreword I.\tIntroduction. I.A.\tBackground.\u2003The first cast-iron water mains were not lined but were installed in the same condition in which they came from the molds following cleaning. After many years, it became evident that the interior of the pipe could be affected by certain t I.B.\tHistory.\u2003From 1922 to 1929, many installations of cement\u2013mortar-lined cast-iron pipe were made under various manufacturers\u2019 specifications. In 1929, the American Standards Association (ASA) [now the American National Standards Institute (ANSI)] Commi <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | I.C.\tAcceptance.\u2003In 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 direct <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | II.\tSpecial Issues. II.A.\tUse of Seal Coat.\u2003Cement\u2013mortar linings may be provided with or without a seal coat (Sec. 4.12.1). The purchaser of cement\u2013mortar-lined pipe or fittings for use with water that is corrosive to cement, such as very soft water, should determine, by us II.B.\tLining of Pipelines in Place.\u2003This standard does not include provisions for cement\u2013mortar lining of pipelines in place. Field lining of pipes is addressed in ANSI\/AWWA C602. <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | III.\tUse of This Standard.\u2003It 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. III.A.\tPurchaser Options and Alternatives.\u2003The following items should be provided by the purchaser: III.B.\tModification to Standard.\u2003Any modifications to the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV.\tMajor Revisions.\u2003Major revisions made to the standard in this edition include the following: V.\tComments.\u2003If you have any comments or questions about this standard, please call AWWA Engineering and Technical Services at 303.794.7711; FAX at 303.795.7603; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or email at standa <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | AWWA Standard SECTION 1:\tGENERAL Sec. 1.1\tScope Sec. 1.2\tPurpose Sec. 1.3\tApplication <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | SECTION 2:\tREFERENCES <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | SECTION 3:\tDEFINITIONS SECTION 4:\tREQUIREMENTS Sec. 4.1\tMaterials <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Sec. 4.2\tCement Sec. 4.3\tSand Sec. 4.4\tWater Sec. 4.5\tMortar Sec. 4.6\tSurface of Pipe and Fittings for Lining <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Sec. 4.7\tMethod of Lining Sec. 4.8\tThickness of Lining Sec. 4.9\tDetermination of Thickness <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Sec. 4.10\tCuring Sec. 4.11\tLining Quality Sec. 4.12\tSeal Coat <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | SECTION 5:\tVERIFICATION Sec. 5.1\tTesting of Sand <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Sec. 5.2\tTesting of Seal Coat <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | SECTION 6:\tDELIVERY Sec. 6.1\tNotice of Nonconformance Sec. 6.2\tAffidavit of Compliance <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA C104\/A21.4-22 Cement-Mortar Lining for Ductile Iron Pipe and Fittings<\/b><\/p>\n |