A 1 1/4 sq tube with a 3/16 wall thickness is about 66% as stiff as a solid 1 1/4" bar - Assuming both are similar materials with similar strength properties and modulus of elasticity.
As an example, a 48" long piece of say 1 1/4 sq solid A36 , fixed at one end with a 1000 lb distributed load deflects 2.22 inches at the end. A mild steel 1 1/4 sq x .19 wall tube deflects 3.31 inches under the same constraint and loading.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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