What is the minimum weight for sheet copper used for flush tank linings per square foot?

The minimum weight for sheet copper used for flush tank linings is established to ensure durability and resistance to corrosion, as well as structural integrity in plumbing systems. The requirement for 10 ounces per square foot strikes a balance between providing sufficient thickness to withstand water pressure and environmental factors while also being manageable for installation and maintenance.

This standard is in place to prevent issues like warping or corrosion over time due to exposure to moisture and various substances found in water systems. Using copper of this specified weight allows for a reliable and long-lasting lining that can endure the conditions typically encountered in a flush tank.

Lighter weights, such as 8 ounces, may not provide adequate strength or durability, while heavier weights, such as 12 or 14 ounces, could complicate installation and might be unnecessary for the specific application of flush tank linings. Thus, the 10-ounce specification effectively meets the functional requirements without over-engineering the material.