Laserfiche WebLink
90° WYE (IPIC90Y) <br />The 90° is used where the Grease Duct must be accessed for clean- <br />outs. it can be used in place of a 90° Tee and provides excellent ac- <br />cess clearance for clean-outs (See FlG. 14). <br />ELBOWS 30°, 45°, OR 90° FIXED <br />(IPIC30L, IPIC45L, OR IPIC90L) <br />The combination of (2) 30L or a 30L and a 45L will ailow for offsets of <br />60' or 75°. The 90L is used to transition from horizontal to vertical and <br />requires a clean-out at the change in direction. Elbows are not de- <br />signed for resisting bendng loads, therefore they must be protected <br />(rom these conditions. (See Figure 9 for structural recommendations to <br />protect the elbows). <br />FIG. 9- METHODS OF STRUCTURAL <br />REINFORCEMENT <br />TOP VE11N <br />PLATE SUPPORT <br />ANGLE B <br />46° FIXED ELBOW <br />SIDE VEIW <br />2 each 45° ELBOWS REINFORCED WITH PLATE SUPPORTS <br />WALL SUPPORT <br />TOP VEIW <br />ANGI.E F <br />46° FIXED ELBOW <br />SIDE VEIW <br />FIG. 10 - MINIMUM ELBOW OFFSETS <br />(REFER TO TABLE 4} <br />4' <br />Table 4 indcates minimum center to center offset for two elbows <br />connected drectly to each other. <br />FIG. 11 - SUPPORT FOR OFFSETS <br />PLATE SUPPORT <br />RACING <br />PLATE SUPPORT <br />30° FIXED ELBOW <br />OR 46° FIXED ELBOW <br />, VENTIIATED THIMBLE ASSEMBLY <br />OR ROOF SUPPOR7' ASSEMBLY <br />~ <br />i EXPANSION JOINT <br />WALL SUPPORT ASSY. <br />i OR PLATE SUPPORT <br />~ EXPANSION JOfNT <br />30° MAX. FOR OIL OR SOUD FUEL <br />30° FIXED ELBOW <br />OR 46° FIXED ELBOW <br />WALL SUPPORT qSSY. <br />OR PLATE SUPPORT <br />~~ I/ \I / PLATE SUPPOHi <br />EXPANSION JOINT ~~~~ <br />IACING <br />HALF ANGIE RING <br />2 each 45° ELBOWS REINFORCED WITH WALL SUPPORTS <br />OFFSETS <br />Offsets should be avoided except when there is no other way to route the <br />Grease Duct. When an offset must be used, good design indicates that the <br />angle used should be the minimum possible (see FIG. 10 & 11). <br />46° F~XED ELBOW ~(pANS10N JOINT <br />Bracing, above and below the elbows, is needed to avoid subjecting them <br />to bending manents. In order for bracing to be effective, it must be rigidiy <br />attached to building members or foundation. The design of the structure <br />used to attach supports must include the weight of the sioped section and <br />whatever addi6onal pipe is carried by the support. Additionally, an e~an- <br />sion joint is needed between the elbows to relieve thermal expansion <br />stresses. <br />6 <br />