This standard provides formulas to calculate overall dimensionsof fittings for steel water transmission and distributionfacilities.
Awwa C208 Fittings Catalog
Many configurations of fittings are possible, and alternativesto this standard may be agreed on between the purchaser andmanufacturer. The fitting dimensions shown in Figures 1 through 5are the minimum dimensions for fittings with plain ends. Inpractice, fittings are selfdom provided as individual pieces asshown but are shop fabricated into full or special lengths of pipeor fabricated into assemblies, combining a number of fittings.
AWWA Standard C208-12 Dimensions for Fabricated Steel Water Pipe Fittings AWWA download B–OK. Download books for free. Water pipes-Design and construction-Handbooks, manuals, etc. Pipe, Steel-Design and construction-Handbooks, manuals etc. American Water Works Association. TD491.A49 S74 628.1'5-dc748 Printed in the United States of America American Water Works Association 6666 West Quincy Avenue Denver, CO ISBN 1.
Conditions not covered in this standard. This standard isintended to serve as a dimensional guide only. It is not a designstandard for wall thickness, pressure ratings, structural design,or hydraulic design. Reinforcement of fittings, which may includeincreased wall thickness, collars, wrapper plates, or crotchplates, is not described in this standard. The design of fittingsshould be performed in accordance with the applicable section(s) inAWWA Manual M11, Steel Pipe: A Guide for Design andInstallation.
Purpose
The purpose of this standard is to provide formulas for use incalculating the general minimum requirements for the dimensions offabricated steel water pipe fittings.
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AWWA C Dimensions for Fabricated Steel Water Pipe Fittings. standard by American Water Works Association, 12/01/ View all product details. ANSI/AWWA C (Revision of ANSI/AWWA C) This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA C – Fabricated steel pipe – Download as PDF File .pdf), Text File .txt) or read online.
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Steel pipe has been used for waterlines in the United States since the s. Refer to Figure lD, Case 1 [equal diameters]. The following guidelines for dimensioning fabriReferring to Figure 2, 1.
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AWWA C208 – Fabricated steel pipe fittings.pdf
Tangent dimensions provided in Table qwwa or calculated by the formulas are minimum dimensions for fittings with plain ends or beveled ends for field welding. If necessary to enable the valve operator to clear the outside diameter of the run pipe, a flanged spool should be used to extend the connection as required.
With the development of the Bessemer process in and the open hearth process in ,steel, the strongest and most versatile refinement of iron, became available for awwx pipe. Number of pieces or segments for elbows. For an angle 8 less than 30″, use 30″ lateral wye plus an elbow. For angles greater than 70″,use the dimension given for tees. Dimensions A and B can be calculated using the following formulas: The major revision was to clarify that the standard is a dimensional guide only awa that design of fittings should be in accordance with applicable sections of AWWA Manual M Some variations from this format may be found in a particular standard.
In small diameters 4-in. The aforementioned guidelines for dimensioning fabricated steel pipe elbows represent good practice for water transmission mains.
Refer to Figures 1A and 1B. The use of A W A standards is entirely voluntary. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and c28. In ,lock-bar pipe was introduced and, by ,had nearly supplanted riveted pipe. Miter welds greater than The commercial designation or dimension by which pipe is designated for simplicity.
Major revisions made to this standard in this edition include the following: In practice, fittings are seldom provided as individual pieces as shown but are shop fabricated into full or special lengths of pipe or fabricated awea assemblies, combining a number of fittings. Deflection angles up to 5″ can c20 taken in welded lap joints using miter-cut bell ends, provided that bell and spigot tolerances are maintained.
In any case of conflict, the requirements of this standard shall prevail. These revisions include the awaw This represents good practice that will assist in maintaining the roundness of pipe ends. A combination of standard miter cuts and pulled joints may also be used. AWWA has no responsibility for the suitability or compatibility of the provisions of this standard to any. Refer to Figure 1C.
Refer to Figure 1A. Use of This Standard. Stoner, Consultant, North Plainfield, N.
Revision of Table 2. The existence of a n American National Standard does not in any respect preclude anyone, whether that person has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard; American National Standards are subject to periodic review, and users are cautioned to obtain the latest editions.
As welding became more universal f208 pipeline construction and manufacturing, varying steel shapes able to accommodate pipeline hydraulics and locations became more prevalent.
The AWWA standards usually contain options that must be xwwa by the user of the standard.
AWWA C 结构钢制水工业管件_图文_百度文库
Awwa C208 Free Download 64-bit
This radius is recommended as awaa standard for water transmission lines where space requirements permit. Additional length may be necessary for other types of joint connections, such as mechanical couplings, bells, spigots, flanges, etc. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official notice. Card, Brico Industries Inc. This standard has no applicable information for this section.
The v208 was first manufactured by rolling steel sheets or plates into shape and riveting the seams. The following items should be covered in the purchaser’s specifications: This standard is intended to serve as a dimensional guide only. Deflection angles up to 5″ can be taken in welded butt joints using miter end cuts of one or both pipe ends, provided that the difference in circumference of the true circle and the ellipse formed by the miter end cut does not result in a joint fit-up that would exceed the allowable plate edge offset see Figure 2A.
For angle 0 less than 30″, use 30″ lateral wye plus an elbow. Minimum dimensions for laterals of unequal diameters and suitable for angle 8 of 30″ to 70″ are stated in Table 1.
AWWA C208-12 DIMENSIONS FOR FABRICATED STEEL WATER PIPE FITTINGS (43208-12)
Qf is a factor to be used in formulas to calculate design dimensions. The length of reducers L, is calcu- lated by the following formula. If the radius is less than 2. It was approved as a “tentative” standard on July 14, Revisions to the text were approved on June 21, ,and incorporated in the sixth and later printings.
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