Recent content by roldy

Very true. I was hoping to get a value and find a beam close to it.

This is a conceptual problem. Not a project of any kind.

The application is basically a water bypass bridge. The bridge would hold 24" diameter polymer based pipes up over an area needed to be kept clear. Unfortunately I don't live near in Florida or close to a beach. I get where you're coming from with that question in regards to ground conditions.

As I was creating my spreadsheet for calculations I was contemplating about using Excel's optimization tool to possibly solve for this.

I have a weight of 30,000 lbs distributed across a span of 100' and supported at the ends. If I have 3 beams to support this load, each beam would then need to hold 10,000 lbs, and with a F.S of 1.6 each beam would need to hold 16,000 lbs. If I assume my max deflection at 1", then I can find the...

That value is the "length" of the horizontal part. Depth of the beam subtract the flange widths. I made a mistake, the value should actually be 0.352 - 2×0.00978.

W14 x 30: d = 13.84" = 0.352 m w = 6.730" = 0.171 m tw = 0.270 = 0.00686 m tf = 0.385 = 0.00978 m 40' = 12.192 m 18" = 0.4572 m ρ = 997 kg/m3 E = 1.4*109 Calculate Weight of water: V = A*L = π*(0.4572)2/4 *12.192 = 2.0016m3 W = m*g = ρ*V*g = 997*2.0016*9.81 = 19.576kN uniformally distributed...

The whole tube is filled with air. The reason why I don't consider this problem symmetric is because of the 2 different temperature boundary conditions. After a long time, the inside of the tube should reach an equilibrium temperature.

Homework Statement I have a copper tube with outer radius r2 and inner radius of r1. Half the tube is exposed to the surrounding air while the other half is embedded into the ground. The outside air temperature is T2 and the ground temperature is T3. What is the air temperature inside the tube...

After re-reading my problem I realized that I do in fact have to repeat the steps. Although, I'm not all to certain these steps will work because when I back solve forT2t I will get T2.

I've been tasked to see if I could determine the number of chill rollers needed to cool down glue being extruded onto a fabric. I'm not sure if my method is valid. The roller has wall thickness d with contact area A. Water inside chill roller is at T1 and glue is at T2. 1) Calculate the rate...

A lifting hook goes around the pin.

Yes I've considered beam analysis and I am currently working on this.

You are correct. I was hoping that I could come up with an equation for this type of scenario.

Thanks for the paper. However, this does not show how the stress changes if the clevis has two different thicknesses. I guess I could take the worst case scenario and use the lesser of the two thicknesses for my t1.