Caught these on the highway videos- Hammer: http://www.youtube.com/watch?v=PaW6EchkC3k&feature=user Bucket: http://www.youtube.com/watch?v=gTd5xDDXDD4&feature=user
You know, I don't think I've seen a Komatsu duck before. What's with tearing up the squares only, utilities?
Nothin' like a little road rehab! Thanks for the great pics and video.:notworthy What state is this in? Can't quite read the plates on the trucks. Is it an iterstate job or just a big surface street? Do you know who the contractor is? Just curious.... Stretch, if I am correct, this is a roadway rehabilitation project. On a concrete road this would be the equivalent of repaving an asphalt road. Usually happens around the thirty year mark for concrete pavement (not always that lucky ). You go in and cut around the cracked and heaved sections. There are several ways contractors go about the removal process. This is an example of how this contractor makes it work best for him. I've only been on jobs that the slabs were sawed and lifted out whole. We were lucky and had people that wanted the slabs for whatever reason. Other times we've had to crush them.:bash Once the concrete is replaced, if the state has enough money to do it up, the whole road will be diamond ground and the joints will get new seals. Sometimes if the subgrade is real wet the engineers will have the contractor put in some form of an underdrain system. With money being so tight for the DOTs lately, these steps are getting skipped more and more. These projects should give the owner at least ten more years of service before another rehab. if done correctly. From what I've observed and heard, after two or three of these projects, the old pavement will be removed and replaced completely or they'll bring in an Antigo type machine to "break and seat" the old pavement. With break and seat the old pavement gets overlaid with asphalt.:usa
Those are NY plates on the trucks. It appears they are removing previously repaired sections of concrete, perhaps the concrete was not to spec.
Seems a bit of a late model excavator, but I dig the truck and the cool bucket. Does anybody actually know what those ducks are like?
We have a couple of Volvo EW180B's. They compare alot to most tracked 15 tonners in digging capability but sit a little higher and usually have shorter sticks, so dig depth is affected. For lifting capacity they are closer to 20 ton machines, probably due to larger footprint with outriggers down, shorter stick , higher hp engine. It'll pick more than our PC200-LC6. They are crap in the mud - will sink like a rock and there isn't much tractive power in the drive motors. But, they do well in urban enviroments on pavement and it's convenient to drive around town. They road around 17-18mph but it's disconcerting to be driving around with your boom down. Intersections are tough because the cab sits back from where the end of the boom is and you sometimes have to stick it out in the intersection to get a clear sight line - you cross your fingers and "tip-toe" out there . They are great for the applications pictured above - demo with a hammer, load out with a bucket, and drive to the next demo area. We have one with a hammer/bucket set-up and one with a grapple/bucket set-up.
Komatsu wheeled machines are dogs. Cat owns this market with the 316 318 and 322. We have two Volvo 180's and both operators don't care for them either.
Now for a real spanner in the works. What are the Daewoos or Doosans like?
I have not had any experience with Daewoos or Doosans. We do have one hyundai and that one is like a dinosoar slow and unstable. I heard that Liebherr makes one hell of a machine but I have never seen any construction company with one in my area.
Not much of a Liebherr presence here, but the scrap yarders swear by them. My uncle reckons that they are the BMWs of excavators.