This standard describes fabricated steel mechanical slip-type expansion joints having packing chambers for use on pipe with plain, flanged, grooved, or shouldered ends in nominal pipe sizes 3 in. (75 mm) and larger. The joints shall be manufactured from steel and are intended for use in systems conveying water. Mechanical expansion joints are not intended for use in buried conditions. This standard can be referenced in documents for purchasing and receiving fabricated steel mechanical slip-type expansion joints and can be used as a guide for inspection and testing. This standard or sections of this standard apply when this document has been referenced and then only to fabricated steel mechanical slip-type expansion joints.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 7<\/td>\n | Foreword I.\tIntroduction I.A.\tBackground.\u2003Fabricated steel mechanical slip-type expansion joints have been used since the early 1900s to accommodate thermal movement in nonburied, aboveground pipelines, penstocks, and other conduits where expansion and contraction of more than 1\/ I.B.\tHistory.\u2003The first edition of ANSI\/AWWA C221 was approved by the AWWA Board of Directors on Feb. 2, 1997. Subsequent revisions to ANSI\/AWWA C221 were approved on Jan. 21, 2001; June 24, 2007; June 10, 2012; and Jan. 20, 2018. This edition was approve 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 | ||||||
| 8<\/td>\n | II.\tSpecial Issues II.A.1.\tChlorine and Chloramine Degradation of Elastomers.\u2003The selection of materials is critical for water service and distribution piping in locations where there is a possibility that elastomers will be in contact with chlorine or chloramines. Document <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | II.A.2.\tGasket Degradation Study.\u2003A pipe gasket, having the hardness of a compressed elastomer with a large mass relative to the small exposed surface area, thus experiences minimal degradation. This was validated in a research paper reported in the Journ 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 included by the purchaser: <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | III.B.\tModification to Standard.\u2003Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser. IV.\tMajor Revisions.\u2003The major changes 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; write to the department at 6666 West Quincy Avenue, Denver, CO 80235-3098; or e-mail at standards@awwa.org. <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | SECTION 1:\tGENERAL Sec. 1.1\tScope Sec. 1.2\tPurpose Sec. 1.3\tApplication <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | SECTION 2:\tREFERENCES <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | SECTION 3:\tDEFINITIONS <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | SECTION 4:\tREQUIREMENTS <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Sec. 4.2\tDesign <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Sec. 4.3\tFabrication <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Sec. 4.4\tCoatings <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Sec. 4.5\tInstallation Instructions SECTION 5:\tVERIFICATION Sec. 5.1\tInspection Sec. 5.2\tQuality Assurance <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Sec. 5.3\tTest Procedures Sec. 5.4\tNonconformance <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | SECTION 6:\tDELIVERY Sec. 6.1\tMarking Sec. 6.2\tPackaging and Shipping Sec. 6.3\tAffidavit of Compliance <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" AWWA C221-24 Fabricated Steel Mechanical Slip-Type Expansion Joints<\/b><\/p>\n |