What are the minimum thicknesses for steel (not less than) and stainless steel (not less than) for hood construction?

What are the minimum thicknesses for steel (not less than) and stainless steel (not less than) for hood construction?

• A. 16 MSG and 18 MSG
• B. 17 MSG and 19 MSG
• C. 18 MSG and 20 MSG
• D. 20 MSG and 22 MSG

Answer: (C)

In hood construction, the metal must be thick enough to resist heat, grease, cleaning actions, and potential impacts, while still being practical to fabricate and install. The minimums specified are 18 gauge for steel and 20 gauge for stainless steel. Using not less than these gauges means you can choose thicker material if you wish, but you must not go thinner. Steel at 18 gauge provides the necessary stiffness and durability to stand up to cooking heat and cleaning, while stainless steel at 20 gauge offers good corrosion resistance under heavy cleaning and grease exposure. If you were to use thinner options, such as steel thinner than 18 gauge or stainless thinner than 20 gauge, the hood could dent, warp, or corrode more readily, compromising integrity and fire-protection performance. So, the required minimums are steel: 18 gauge and stainless steel: 20 gauge.

In hood construction, the metal must be thick enough to resist heat, grease, cleaning actions, and potential impacts, while still being practical to fabricate and install. The minimums specified are 18 gauge for steel and 20 gauge for stainless steel. Using not less than these gauges means you can choose thicker material if you wish, but you must not go thinner.

Steel at 18 gauge provides the necessary stiffness and durability to stand up to cooking heat and cleaning, while stainless steel at 20 gauge offers good corrosion resistance under heavy cleaning and grease exposure. If you were to use thinner options, such as steel thinner than 18 gauge or stainless thinner than 20 gauge, the hood could dent, warp, or corrode more readily, compromising integrity and fire-protection performance.

So, the required minimums are steel: 18 gauge and stainless steel: 20 gauge.