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AMethods <br />6. To achieve the most reliable piping system, it is essen- Fittings are manufactured to accept either a tapered spigot <br />tial that the installation crew be familiar with the or T.A.B. spigot end of the pipe. Tapers can be made in <br />joining techniques described in this manual. Note the field with tools specially designed for this purpose (see <br />especially Section 6. Section 5). Bells cannot be field -made. When a belled <br />end is needed, use a bell x bell coupling. <br />7. Proper and safe methods of testing are recommended <br />to assure that the bonded joints in the piping system <br />have been properly bonded and cured. See Sections 6 <br />and 7. <br />1.4.2 Bell and Spigot Joining Method <br />The adhesive bonded, tapered bell and spigot joint is the <br />primary joining method for 2"-4" (50 mm -100 mm) pipe - <br />to -fittings (see Fig. 1.4.1). <br />Bell x Spigot Joint <br />FIGURE 1.4.1 <br />The T.A.B. (threaded and bonded) joint is the primary <br />joining method for pipe -to -couplings (see Fig. 1.4.2). The <br />mechanical locking action—when combined with the ad- <br />hesive—promotes positive make-up of the joint and pre- <br />vents backout during adhesive curing. <br />T.A.B. Joint <br />�1 <br />O�nnl'LIEJ <br />Sleeve Coupling <br />FIGURE 1.4.2 <br />Products pipe, use one of the fol - <br />4. Fine tooth (32 teeth/inch) hack saw, <br />2. Circular saw with abrasive cutting blade (carbide grit or <br />masonry blade), <br />3. Sabre saw with a fine-tooth metal or carbide grit blade, <br />4. Jigsaw with carbide grit abrasive blade, or <br />5. Chop saw (see Fig. 1.5.1) <br />Cutting Tools <br />Abrasi <br />Blade <br />FIGURE 1.5.1 <br />Note: Cutting operations for fiberglass pipe can <br />generate dust or cutting chips that are irritating to <br />the skin, upper respiratory tract, and eyes. Because <br />these materials are irritating, good ventilation for the in- <br />stallation crew should be used to prevent exposure. <br />Pipe is supplied with TAB. spigot x T.A.B. spigot ends. <br />. Three sleeve couplings are supplied per 100 feet of pipe. A nuisance dust breathing filter should be used when <br />working in areas where wind and dust are present. <br />7 <br />