Forging a Hydroelectric Future

[music] Dorothy Harris: Machining, welding, pipefitting, cleaning, oiling. A hydromechanic is everything but electrical. We balance. We rotate. We take apart. We put together. And that’s just the beginning. [music] In the United States Navy, I spent 16 years as an aviation metal smith. Heavy structures was my specialty. I got out, wandered the globe, […]

Scientists create an Ultra-Thin Concrete Roof that can generate Solar Power

Researchers from ETH Zurich have built a prototype of an ultra-thin, curved concrete roof using innovative digital design and fabrication methods. The tested novel formwork system will be used in an actual construction project for the first time next year. The self-supporting, doubly curved shell roof has multiple layers: the heating and cooling coils and […]

Electric Snow Melting system installed in an Asphalt Driveway

welcome to our snow melting under asphalt video as you can see a few of the leaves are falling here it’s they say on TV winter is coming so we need to get this thing ready to go so what we’re going to do is we’re going to be installing tire tracks in this area […]

Burning Stuff With 2000ºF Solar Power!!

In a previous project I found a free tv and turned it into a giant solar scorcher. This shoots out a deadly beam of sunlight, that’s hot enough to abuse food, melt metal and burn things you probably shouldn’t. Today seemed like a good day to play with my Solar Scorcher. I positioned my frame […]

How to get 2000ºF Solar Power

If a small magnifying glass will burn things with sunlight, how much power could you get from a lens as big as you? In this project we’re hacking open a rear projection TV, because that’s where you can find one of these amazing solar scorchers, for free. To get started, the first thing I’m gonna […]

What is Concrete?

Concrete is as much a part of the urban landscape as trees are to a forest. It’s so ubiquitous that we rarely even give it any regard at all. But, underneath that drab grey exterior is a hidden world of complexity. Hey I’m Grady and this is Practical Engineering. On today’s episode – it’s concrete […]