scope:

This standard provides overall dimensions for fabricating steel water pipe fittings for sizes 6 in. through 144 in. (150 mm through 3,600 mm)* for steel water transmission and distribution facilities.

Many configurations of fittings are possible and alternatives to this standard may be agreed on between the purchaser and manufacturer. The fitting dimensions shown in Figures 1, 2, 3, 4, 5, and in Table 1 are the minimum dimensions for fittings with plain ends. In practice, fittings are seldom provided as individual pieces as shown but are shop fabricated into full or special lengths of pipe or fabricated into assemblies, combining a number of fittings.

Conditions not covered in this standard. This standard is intended to serve as a dimensional guide only. It is not intended to be a standard for wall thickness, pressure ratings, and structural or hydraulic design. Reinforcement of fittings, which may include increased wall thickness, collars, wrapper plates, or crotch plates, is not described in this standard. The design of fittings should be made in accordance with the applicable section(s) in AWWA Manual M11, Steel Pipe-A Guide for Design and Installation.

* Metric conversions given in this standard are direct conversions of US customary units and are not those specified in International Organization for Standardization (ISO) standards.