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psi. Refer to ASTM D3839 or 5. Frozen earth will eventually 1.6.3 Adhesive bonding AWWA C950 for further details. thaw, leaving the pipe with Several basic adhesive systems are 4. Timing-Cover the pipe as soon insufficient support and voids available from Smith Fiberglass as possible after successful test- around the pipe. Take care to Products. They differ in operating ing to eliminate the chance of remove frozen lumps from all characteristics and working time damage to the pipe, floating of backfill materials before back- (pot life) (See Figure 1.6.4). the pipe due to flooding, or filling (See Figure 1.6.2). shifting of the line due to cave- Remember, in all cases, the pipe Table lists the adhesive kits, ins. If damage is suspected,the should be completely surrounded their recommended usage, and lines should be retested. with select backfill (sand or the approximate number of bonds '/a-inch to 3/4-inch pea Per kit.The working life of each kit gravel). Native backfill is based on an ambient tempera- !� ture of 75° F (24° C). materials should never ,L;: ,"x� :;�; �,; be used. In all cases, �.�• i .: .' 1 ,.x'%_ - t rI there h ere must never be voids (areas which do - "(min)I Table.' not contain backfill) rt' / mm I '�' under or around the pipe. Six inches 052 mm) of the fill must be I 6"(mm.) b s.�j•� '.:' I 1152 mm, placed under the pipe , as bedding material _ _I 6" (See Figure 1.6.3). £ M Figure 1.6.3 ^�^152 mm Figure 1.6.4 TABLE 1.6.2 ADHESIVE KIT DATA DS-7000 SERIES FOR USE WITH RED THREAD II OR RED THREAD IIA PIPE AND RED THREAD II FITTINGS OR RED THREAD II SECONDARY CONTAINMENT FITTINGS FOR PETROLEUM PRODUCTS ONLY: Approximate No.of Bonds/Kit Working 2" 3" 4" Life(') Kit Quantity Mixed Adhesive (51 mm) (76 mm) (102 mm) (Min.) DS-7014 6.8 oz.(193 grams) 25 18 10 25 DS-7024(twin pack) 2.5 oz.ea.(71 grams ea.) 18 10 6 25 DS-7054(2)(bag kit) 1.6 oz.(45 grams) 6 4 2 25 DS-7069(3) 9.95 oz.(282 grams) — — — 25 DS-8000 SERIES-(REQUIRES HEAT-ASSISTED CURING) FOR USE WITH RED THREAD IIA PIPE AND RED THREAD II FITTINGS OR RED THREAD II SECONDARY CONTAINMENT FITTINGS FOR PETROLEUM PRODUCTS,ALCOHOLS AND ALCOHOL-GASOLINE MIXTURES: Approximate No.of Bonds/Kit Working 2" 3" 4" Life(') Kit Quantity Mixed Adhesive (51 mm) (76 mm) (102 mm) (Min.) DS-8014 6.4 oz.(181 grams) 21 15 8 15 DS-8024(twin pack) 2.7 oz.ea.(77 grams ea.) 18 12 7 15 DS-8055(2)(bag kit) 1.6 oz.(45 grams) 6 4 2 15 DS-8069(3) 9.3 oz.(264 grams) — — — 15 (1)Number of bonds is based on the volume in the kit and (2)Joint cleaner does not come with the (3)Not recommended for most 2",3",and 4"(51,76,and 102 mm) must be completed within the working lila of the kit bag kits;it must be ordered separately. installations because of the large quantity of adhesive per kit 10