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alcohols, gasoline, turpentine, or die- sel fuel to clean joints. If you have any questions, please contact your Smith Fiberglass Prod- ucts' representative. Bonding surfaces must be dry, so be sure all solvent has evaporated from the surfaces before applying adhe- sive. 2.7.3 Bonding After cleaning all sanded surfaces, apply a thick coating (1/16-inch/1.6 mm minimum) of adhesive to the socket area of the containment fitting. Liberally coat the flanges (flat bond- ing surfaces) of both halves of the fittings with adhesive (1/16-inch/1.6 mm minimum thickness). See Figure 2.2.5. Next, apply a thick coating (1/16-inch/1.6mm minimum) of ad- hesive to the scarfed or sanded sur- faces of the pipe ends. Assemble the containment fitting by placing the half with the pre-installed threaded female inserts on the bot- tom. r 2.7.4 Assembling and bolting Use the bolts supplied with the fitting to assemble the fittings on the pipe. See Figure 2.2.5. Use of an air or electric wrench with a magnetic socket will greatly facilitate assem- bly. When starting the bolts, allow the bolt to start with minimal pressure on the tool. Excessive pressure may push the insert from the fittings. Tighten the bolts alternately and with equal force. DO NOT EXCEED 8 FT• LBS OF TORQUE! Make sure that the pipe fits snugly into the socket ends of the fittings and that there are no gaps between pipe ends and fitting sockets. 2.7.5 Precautions Take care not to disturb a completed containment piping joint when as- sembling additional joints. The ad- hesive must be fully cured before applying stress to the assembled joints. Read and observe the follow- ing precautions: QAvoid contact with the adhe- sive and hardener since they are capable of causing skin and eye irritation. Gloves and eye protection must be used. If contact is made, flush eyes with water and wash skin with soap and water. Do not inhale hardener fumes; work in well -venti- lated areas. 2.7.6 Adhesive cure IMPORTANT: For secondary con- tainment systems conveying petro- leum products, alcohols, and alco- hol -gasoline mixtures, you must use DS -8000 or DS -7000 series adhesive for bonding. Each DS -8000 series adhesive bond MUST be heat -cured using Smith Fiberglass Products elec- tric heating collars or Smith Fiber - 35 glass Products chemical heat packs. The DS -7000 series adhesive bonds do not require heat -assisted curing, but you can shorten the cure time by applying heat. We recommend ex- ternal heat to assure full adhesive cure when ambient temperature is below 70°F (21 °C). After curing, pipe should not be handled or used until thejoint returns to ambient temperature. 1. Electric heating collars Approximate adhesive cure time when using electric heating collars on secondary containment fittings is 25 to 35 minutes per joint. See Part One, Section 6 and Table 1.6.3 for additional heating collar information. Two heating collars are required for each end of a containment fitting bond (See Figure 2.7.1). Curing saddles Curing saddles can be accomplished by wrapping a heating collar over the saddle outlet as shown in Figure 2.7.2. For outdoor installations, place wind shields on both sides of the saddle to prevent heat loss. Total cure time must be two hours for saddles. Allow the saddle to cure and cool down to ambi- ent temperature before bonding or threading in the side run. Do not use chemical heat packs to cure saddles.