Ask X3What does 49 CFR 178.507 (Standards for plywood drums) require?
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Based on 49 CFR 178.507, the construction and design requirements for plywood drums (identified by the code 1D) are as follows:
* Wood Quality: The wood must be well-seasoned, commercially dry, and free from defects that could reduce the drum's effectiveness. The heads may be made of another material if it is of at least equivalent strength and durability.
* Plywood Plies: The body must use at least two-ply plywood, and the heads must use at least three-ply plywood. The plies must be firmly glued together with their grains running crosswise.
* Design and Joints: The body, heads, and their joints must be designed appropriately for the drum's capacity and intended use.
* Lining: To prevent contents from sifting out, lids must be lined with kraft paper or an equivalent material. This lining must be securely fastened to the lid and extend to the outside along its entire circumference.
* Capacity and Mass Limits: The maximum capacity of the drum is 250 L (66 gallons), and the maximum net mass is 400 kg (882 pounds).