Excellent presentation, but it would be improved if you added a caption as soon as you introduced a new term.

Sorry, i am university student and need answer about case 2. So if we used geogrid in compacts fill. Is the failure still exist, if we recalculating soil properties and extending the geogrid?

/brilliant

I would recommend you add a stiffener to the load application location and/or secure the wood to both the bottom and top flange. This should garauntee you see the effects on the section globally rather than locally

Very good presentation. Next time, choose a physical model that has a smaller cross section and a greater length. Yo will get more deflection before failure and a better visualization of the deformation of the beam as you apply the test load.

*a LOOSE bolt. Correctly tightened bolts are always in tension until the joint fails. A locating pin would have been a better example.

For engineer and Archtecturial designers Commercial and

shrinkflation is real.

Great. Could understand that the pendulum is set in such a way that it helps the building to survive if the wind is blowing towards it. Am I right? Thanks

No shit......pretty common sense thing to me

5:40 Where does the 0.25 denominator come from?

I needed this while in school.

I don’t totally trust examples,especially that are made so differently from actual materials. For this to=o be more convincing, the beams should have been made in the solid. I know, of course, that it would use a lot more materials. But the fact that these are hollow meant the loading characteristics are much more complex. Additionally, the plastic has a different bending modality. Many plastics will crack, or break instead of bending as steel does, particularly A 36, used in most construction.

👍🏻👍🏻

As a layman, I learned NOTHING. But a good tearcher simplified this for me and told me that stirrups as like ribs in mammals. They hold everything together.

Pllllz can you shaire with us the code w that you used it in the video about Magnus effect plllllz,i really need it

I am interested in how to modify typical construction calculations for the design of structures on Luna, & Mars. Because Mass & weight are separate functions linked by G where typically we would think of G as always being a value of 1, on Luna G is The acceleration due to gravity on the surface of the Moon is approximately 1.625 m/s2, about 16.6% that on Earth's surface or 0.166 ɡ. but I don't know how that works for figuring out how much load an I-beam load bearing capacity should be expected to change, ect. can you make some videos to help us understand how to begin thinking about the design of larger structures on Luna, & Mars when the supplies become available? thank you.

This was soooo helpful. Thank you!!!

GOOD EXPLAINATION

Question: Why is an I shape better than say, an III shape? Would 3 'pillars' in the same total area be better? I can understand why its better than a solid beam in terms of weight/strength ratio and thus providing advantage in costing less and weighing less, but is all the removed material entirely redundant for integrity or is it just going past the point of diminishing returns?

Excellent explanation and skillfully crafted visuals. Thank you!

How shall we repair this type of failure as Concrete Breakout because of anchoring near the edge ? Grouting is enough or not ? also I want toknow how much is the minimum distance between the anchor bolt and the edge ? Thank you for your response

Why will there be no 'sliding' of 'layers' with respect to each other in pure bending?

Beautiful video!

What type of materials can be used to manufacture the structure with high corrosion resistance and strength also considering the costs of the materials

Those were some of the best graphics I've seen in these educational videos. Really fantastic job guys.

There is a need to legislate consideration of ground geology when constructing buildings as a condition for the housing industry. The ground is made up of a complex of stone, sand, clay, rock, water and air. The stress of the earth affects this and causes destruction. How do we measure the current situation? Is it possible to measure the strata and geology and C,φ to a depth of 25M? Please discuss.

Very helpful!

I live in a county where there are many 80 year old single wall homes that once in a blue moon face 200mph wind situations and earthquakes of decent magnitude. Always thought the older carpenters must be doing something better to make homes that seem soo weak by current codes to stand up to such extreme adversity. I often pull out 80 year old cast iron tubs whose finish is dulled but barely a sheen of rust on the underside. After your wood video, I wonder if the older things were all superior just from the materials themselves?

Accurate physical constants cannot be calculated with spt-Nvalue. Boring sampling also performs triaxial testing using pressure-disturbed sampling. How to obtain accurate data in situ?

Good lesson, keep it up!

Would a synonym for moment be force or load?

0:20 is a foce

"Why is the 2 by 4 getting smaller and smaller?" Because America became the greediest country in the world. That's why.

0:57 Large scissors are (or used to be, 45 years ago) called "shears". That's how I remember what the shearing force is.

The factor of different distances from the load to the base should be examined also (shear+torsional example has load positioned further from base).

sounds and looks like a spine.

I assume that the offset load as shown in the last demonstration become higher as the load becomes more offset, I'll guess it is probably exponential or close to it.

Does the 18% figure at the end include the shortening of the beam?

Another failure mode to consider is lateral buckling in beams. Even though the beam may be loaded through the centroid, if the beam is long compared to it's moment of inertia, lateral buckling can occur. Buckling is an elastic instability problem.

Normal bolt connections are not under shear stress- tension from nut forces 2 plates together and generates friction

0:06 why is there era on an IS-4 😭

Such an awesome video. Thankyou!

Your 3d printed beams and experiments could be sold as learning tools to engineering schools

You're doing well. Keep them coming.

Great video

The printed props made it really easy to visualize and understand the math, thanks!

Steel gains strength in tension so the torsional effects are often self defeating in a sense. You can't 3d print a 'model' of a W beam and think that it will behave even remotely the same as quality steel. I subbed b/c your engineering math is very on point, but there are also large practical misses that I also see daily in stamped engineering out in the wild. Legally speaking I'm not an engineer; I merely present them with solutions to stamp.

Amazing summary. Ive taken full classes that couldnt explain this so well as it's done here in just 10 minutes!

Great way to visualize this, thanks for sharing. Charles