Wind Load on 8"Dia.Pipe Exhaust Stack

[tonyb]

&nbsp;&nbsp;&nbsp;Can anybody assist me in determining the deflection at the top of a 8&quot;dia. stainless steel Sch.#40 Pipe x 20Ft. high Deisel Exhaust Vent Stack. Its anchored at its base and guided at the roof at 82.5&quot;, with 157.5&quot; above the roof, the wind load is 400 lbs. force.<br>&nbsp;&nbsp;&nbsp;Usually I do simple calculations on steel support frames for HVAC equipment, but occassionally something different pops up.<br>&nbsp;&nbsp;&nbsp;Thanks in advance.

 

[JC]

It should be a simple cantilever beam problem.&nbsp;&nbsp;The AISC Manual of Steel Construction has the formulas you need to solve the problem.&nbsp;&nbsp;Good luck!

 

[Focused]

Tony,
The deflection at the top of the stack is 0.24892&quot; (approx. 1/4&quot, based upon the data you posted.

 

[robinxie]

My calculation is 0.346 inches. If you can give me the wind speed, I can give you more accurate result.

 

[ag89]

I get 0.378&quot;. This assumes the 400# is applied at the top of the stack, not likely.