Back in the good old days, when everyone was working and unemployment was nearly zilch, we were pouring interstate highway pavement, 24' wide and usually about a mile per day. They used a paving train of CMI machines, slip form construction, with dry unagitated concrete hauled in regular dump trucks from a nearby portable batch plant. It wouldn't be unusual to have 40 dump trucks each day supplying the mix. They'd dump onto a belt placer that ran in front of the main CMI paver. The reinforcing was continuous 1/2" bars, 40' long, hand spliced, and spaced about 4" apart across the 24' width. The rebars ran through tubes in front of the main paver - the tubes raised the bars up off of the subgrade. They had a spinning tube strikoff machine, a machine to put a vertical piece of plastic in the center, a bridge machine to allow the finishers to manually check the surface with a 10' straightedge, automated broom machine, burlap drag machine, tine machine, and finally a rig that sprayed curing compound on the finished product. All of these machines spanning the 24' pavement width, and all self propelled. (The bridge machine was pushed by hand) Probably 70 men working each day, including the truck drivers. I'm telling all this to give an idea of the investment in a day of paving a mile of interstate. At the end of the day, you'd have a mile of concrete behind you that ranged from set up (hard, but not ready to drive on) to just sprayed (still plastic). One evening the contractor's safety man drove around the barricades and onto the day's pour, continuing until he mired up and could go no farther. You might say that he was the goat for the day. . .
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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