UL 32 2019 pdf download – Metal Waste Cans.
6.2 Acceptable types of formed seams are illustrated in Figure 4.1, Figure 4.2, and Figure 4.3. 6.3 Formed seams shall be not less than 1/4 inch (6.4 mm) in width and shall have a metal overlap of not less than 1/8 inch (3.2 mm). 6.4 The bottom and the lower 6 inches (152 mm) of the body shall prevent oil leakage. If the bottom and vertical body joints are formed seams, they shall be sweated and soldered unless the can is galvanized after forming. 7 Rivets and Spot Welds 7.1 A rivet shall have a shank diameter of not less than 1/8 inch (3.2 mm), and shall not be headed over against sheet metal. If a can is galvanized after forming, an uncoated rivet may be used. 7.2 A rivet shall have a close fit in the rivet hole. 7.3 The head of a rivet on the inside of a waste can within 6 inches (152 mm) of the bottom shall be sweated with solder unless the can is galvanized after the rivet is installed. 7.4 When spot welding is used for the attachment of any part, at least twice the number of welds shall be used as is required for a rivet. Spot welding shall not burn through sheet metal. 8 Body Reinforcements 8.1 The upper edge of the body shall be reinforced by hemming, rolling, wiring, or by some other method that provides stiffness. 8.2 If a waste can is supported by a sheet metal base, the bottom edge of the base shall be reinforced as required for the upper edge of the body. 8.3 A steel strip reinforcement shall be riveted, welded, brazed, or otherwise mechanically secured. 9 Cover 9.1 The cover of a waste can may be made in one or two pieces. 9.2 A one-piece cover shall be constructed of sheet metal 0.006 inch (0.15 mm) thicker than that specified in Table 5.1 for the hinged cover section unless it is reinforced or provides the equivalent degree of stiffness.
10 Cover Reinforcements 10.1 The movable section of a two-piece cover shall be formed or reinforced in a manner to provide stiffness to resist deformation as a result of rough handling and to maintain a close fit with the body. 10.2 A flanged rim of a cover shall be hemmed, rolled, wired, or stiffened unless the cover is of metal 0.006 inch (0.15 mm) thicker than that specified in Table 5.1. The edge of the rim shall be smooth and finished without sharp corners. See 9.4. 10.3 A one-piece cover shall resist flexing. This may be accomplished by the use of separate reinforcing members or by stamping the cover in such a form that will provide the stiffness indicated in 10.1. 10.4 The movable section of a two-piece cover shall be reinforced by strip steel having a cross-sectional area of not less than 0.109 square inch (0.70 cm 2 ), placed on the center line of the cover at right angles to the hinged edge. See Figure 4.1, Figure 4.2, and Figure 4.3. This reinforcement may be bent up at its outer end at an angle of about 45 degrees to serve as a carrying handle, and the inner end may be bent up to limit the angle of opening.