Showing posts with label innovation. Show all posts
Showing posts with label innovation. Show all posts

Friday, October 02, 2026

Thursday, September 24, 2026

Caltrans needed a way to build an off ramp embankment on a foundation of 30 feet of mud from San Francisco Bay, a weak layer of soil that cannot support heavy structures, without it settling or sinking unevenly over time - so they innovated - and used 6,627 tons of shredded tires (thank you George!)




Caltrans chose the tire aggregate: it weighed about 50 pounds per cubic foot, lighter than the roughly 60-pound alternative, and cheaper too. Tire-derived aggregate is made by shredding used tires into pieces a few inches across that can replace gravel, rock, or soil in construction projects.

the finished embankment is roughly 26 feet tall, 700 feet long, and 50 feet wide. 

Dr. DingXin Cheng of California State University, Chico, who documented the project for a CalRecycle usage guide, calls it the first embankment project where Caltrans used shredded tires this way, and notes that the same layered approach became standard practice on later projects of this kind.

The main goal behind using shredded tires was reducing stress on the fragile bay mud, and the numbers back that up. The built embankment put pressure of 2,250 pounds per square foot on the foundation ground. By comparison, a similar earth-filled embankment would have exerted 3,750 pounds per square foot

So, since shredded used tires have proven to be really good for something, why are landfills still full of them, instead of them being shredded and preventing mosquitos from having a  place to create many more generations of blood thirsty skeeters? 

Tuesday, August 11, 2026

A 49 foot section of a worn turbine blade trucked in from a Colorado wind farm was laid across a creek in an Atlanta park, with a bridge built on it, allowing access to 2 acres previously blocked off by the river


The park is Beaverbrook Park, and the girder is a section of a retired turbine blade hauled in from a wind farm in Colorado. The piece runs about 49 feet and weighs close to 7,000 pounds. It was cut, laid on its side, bolted into concrete abutments and decked over.

A wind turbine blade is not scrap that happens to be strong. It is a cantilever beam, engineered to hold its own weight in the air and take bending load in every weather for two or three decades without cracking.

The Atlanta crossing is the third of these, and the first outside Europe. The original went in on a greenway in County Cork in January 2022, a span of about 16 feet built from two blades that once turned on small turbines, and the team counted a 20 percent reduction in carbon against the steel girders it replaced.

Tuesday, June 23, 2026

Greg found a cool innovation of re-using stuff in his grand fathers garage




He graduated high school in 1957, 
 bought his own farm the same year, 
proceeded to erect a barn behind house there. 

 In 1959 he built a work shop. 
In 1960 he bought a sears air compressor it has date on it, and is still in use.

And he made this hose reel!

It has a pipe union in it with a leather washer with grease on it to seal air. 

Greg says in his post that he was born in 1971, and has no idea how many times his grandfather, Greg himself, and his 2 sons, and countless neighbors pulled this hose out 

His grandfather passed away in 1999 but this thing lives on. 

The hub that the hose is rolled up on is a 4 legged John Deere logo, 5 gallon oil can.