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Note: Do not use this method where the spigot end would be hit. Use come-alongs in this case. On 2"-4" (50 mm -100 mm) diameter pipe, a three - pound (4 kg) shop hammer is adequate. 2. T.A.B. joint---T.A.B. joint installation procedures follow the normal bell and spigot operations of cleaning, ad- hesive mixing, etc., as described previously. The threads on the bonding surfaces are designed to im- prove the reliability of the joint, particularly under ad- verse conditions. Two T.A.B. wrenches are recom- mended when joining T.A.B. pipe (see Fig. 1.6.14). Separate wrenches are available from Smith Fiberglass is Products for each size pipe. The wrenches lock around the pipe and force the pipe into a very slight oval shape. Therefore, the wrenches must be placed 6" to 12" (150 mm to 300 mm) away from the joint to assure good joint make-up. NOTE: If T.A.B. wrenches are not available, strap wrenches, such as Ridgid(1) No. 2-P, can be used (see Fig. 1.6.15). To prevent damage to the pipe wall, wrap the strap wrench around the pipe as shown in Fig. 1.6.15. CAUTION: Improper use of strap wrenches can cause point -loading damage and/or bad joints that are not locked up. In order to gain experi- ence in de- termining the proper amount of torque to use, the fol- lowing pro- cedure is recom- mended for the first few joints. DO NOT OVER TIGHTEN. SECTION 6 ♦ Installation a. Cover all machined areas on the spigot and at least Y" (13 mm) beyond the last thread in the bell with adhesive. b. Screw the pipe together by hand, ensuring that the joint is not cross-threaded. Two inch (50 mm) di- ameter pipe can be hand tightened. To ensure complete joint make-up for 3" and 4" (75 mm and 100 mm) diameter pipe, use T.A.S. wrenches. c. Check lock-up by moving free end of pipe in an up- and-down or side-to-side motion. The movement must be sufficient to move the joint being checked. No movement should be visible in the joint. If any movement exists, continue to tighten until no movement is visible. Connections into fittings are made using the normal bell and spigot methods. 1.6.5 Adhesive Cure Time Cure time is the time required for the adhesive in the as- sembled joint to harden. Cure time depends on the type of adhesive and the ambient temperature, as shown in Fig. 1.6.16. Figure 1.6.16 Ambient Temperature vs. Time to Pressure DS -7000 & DS -8000 Temperature Series Adhesives (°F) Time (flours) 55 24 60 16 65 11 70 9 75 4 A 80 4 85 3 A 90 3 100 2 110 2 IMPORTANT: When usiniz RED THREAD IIA pipin far alcohol and alcohol /gasoline mixtures, two adhesive systems are available. DS -8000 series adhesive mgy be used for primary and secondary containment joints. DS - 7000 series adhesive may be used for secondary contain- ment systems. DO NOT USE DS -7000 series adhesive for primary sys- tems conveying alcohol. (1) Ridgid is a registered trademark of the Ridge Tool Company. RED THREAD IIA Pipe & Fittings 13