COMPLIANCE INFO_2000-2009 - Laserfiche WebLink

Home Browse Search

TABLE 3.1.1 Sizing for Telescoping Pipe Systems u Product Secondary Cont. Secondary Cont. Telescoping B Pipe Size Pipe Size Pipe Size Reducer Size A B C D (in.) (MM) (in.) (mitt) (in.) ( itl) (in.) ( M) 2 50" 3 75 4 100 4 x 3 100; x,,75 3 75 4 100 5 125' 5 x 4 125 x 100 4 100 5 ) 25 6 150 6 x 5 1.50 x 125 TABLE 3.1.2 Determining Length of Containment Pipe n u C = (A - X1 - X2) - 2 B = (C=2) - 1" (25 mm) Where: X1 =Fitting #1 X2 = Fitting #2 Note: This equation is based on the use of concentric re- ducers in the system. If eccentric reducers are used, substi- tute 2" (50 mm) for 1" (25 mm) in the B equation. Example: For 2" (50 mm) product piping; if A = 20'4" (6198 mm) OAL (overall length) And X1 = 2V (54 mm) (90° elbow from Table 3.1.2) And X2 = 1X" (48 mm) (45° elbow from Table 3.1.2) Then = (20'4" - 2V - 1X") = 2 = 10' (6198 mm -54 mm -48 mm) =2=3048 mm And = (10=2)-1"=4'11" (3048 mm - 2) - 25 mm = 1499 mm Cut pieces: C = center section = 10' of 4" pipe (3048 mm of 100 mm pipe) B = end sections = 4'11" of 3" pipe (1499 mm of 75 mm pipe) B C B A D D A', FIGURE 3.1.1 WARNING: Since every insertion of the primary piping may vary, dry fit all secondary containment connections to make sure that the insertion is approximately 3". Be sure that the containment pipe is not inserted too far into the containment fitting. The glossy O.D. of the pipe should not be seated in the containment fitting. NOTE: Currently, 2", 3", 4", and 5" pipe; 4" x 3" and 5" x 4" telescoping con- centric reducers; and 4" x 3" telescoping eccentric reducers can be supplied with a UL Label. I] 32 E Installation Instructions