Is Filling 4 Tube Steel with Concrete a Stronger Option for Sail Shade Supports?

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Filling 4" tube steel with concrete is considered a viable option for enhancing strength and resistance to buckling in sail shade supports. The discussion emphasizes that this method can provide more stability compared to using 6" tube steel alone. Concerns about cost are noted, but the focus remains on achieving a strong installation. Proper fixtures at the base are essential for ensuring the effectiveness of the concrete-filled tubes. Overall, this approach is recommended for the specific conditions in Phoenix, where extreme weather is not a concern.
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I am currently installing some sail shades in my back yard. The manufacturer is callin for 6" tube steel supports but I believe that 4" tube steel filled and compacted with concrete will provide more strength and resistance to buckling. Obviously I am concerned about price but want to do a great job. I am in Phoenix and do not need to worry about hurricanes or snow load. The pipes are both schedule 40 with 1/4" walls. Any thoughts?

Tim
 
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If you fill 4" tubes with concrete it will not buckle. Go with that, as long as you can install proper fixtures at the bottom.
 

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