It goes like this: Pile up soil - no wood, trees or compressible matter -- in 2' deep layers and compact to 90% in-situ density. Repeat until you get to the top. You rough the slope out at 2 to 1, or 3 to 1, or 4 to 1 as desired, until you get most of the fill in place. All this takes is a long line of dump trucks, a few sheepsfoot rollers and a few surveyors. In this case, they probably worked 24/7 importing and dumping soil, compacting it, and had a small arm of surveyerors on hand grading the slopes.
Bingo. Done. No engineering to speak of.
As far as re-using specs for the MacArther Maze, did you even read the article I posted.
Henderson explains that Caltrans required the girder’s center 40% section to be free of welded splices. “This requirement meant that we had to purchase 40-ft lengths of 2-inch thick steel plate, which is relatively uncommon as a stock item.”
You had welding requirements and weld testing that had to be performed immediately. You don't just assume that welds being fast-tracked in a 24-hour work cycle are good. Hell, Contractors had one stinking day to produce shop drawings for the work. Have you ever seen shop drawings? Do you know what it takes to have a CADD detailer detail all of the bolting patters and connectors for steel construction and have the shop drawings proofed for submittal in just 24 hours time? I didn't think it could be done.
What is with this bashing of American labor and praise of foreign labor, just because US union party bosses are a bunch of commie hacks? Maybe the union members aren't all a bunch of commit hacks, sort of the way cops tend to be pro-gun the way Chiefs of police are all gun banners.
That isn't directed at you so much as the parade of people here praising the Japanese for ditching a grading a hole in 6 days, with not a single Freeper even acknowledging the accomplishment US workers to rebuild 2 broken bridges in 26 days. Is it just the additional 20 days that is blowing everyone's mind?
I am embarrassed for all of the love here for foreign labor and the complete lack of recognition of US labor when they pull together. Frankly, this attitude makes me sick.
you are correct
There were before and after photos that were very impressive.
The section of road was perhaps 200 yards long. Itrequired none of the tedium, accurate tedium BTW, you dwscribed with a steel structure.
However, when compared to urban pot hole repairs, the photos were impressive