Pup trailers

[3 Horse Ranch]

Yes ive seen dumptrucks in Ontario keeping their blinkers on. When i remarked that, my cousin said "the next corner is right after, so he doesnt want his tag axles to drop yet"

I was intrigued that a whole regiment of tag axles was required to meet requirements of the road authorities, yet none of them was steered, meaning that the axle load on the fixed tandem was greatest when it was turning...

Then on the other hand, we here in The Netherlands are pretty unique in Europe, with a max GVW of 50 ton and 11.5 ton permitted on any axle that is driven, and more than 1.8m spaced from the next axle, which leads to vehicle configurations especially in construction, that are unique in Europe:

I noticed neither truck had spreader chains, they just dump in piles. This is what we routinely did, except if you timed it right your trailer ran empty right over the start of the truck spread.

 

[Renze]

I noticed neither truck had spreader chains, they just dump in piles. This is what we routinely did, except if you timed it right your trailer ran empty right over the start of the truck spread.

That practice is only commonspread in Scandinavia, where they have a lot of less intensively used roads, and lots of natural rock. And as you can see, the Swedish are allowed to haul 60 ton GVW, usually dont use AWD trucks, and more often use a wheel loader to spread the gravel than a grader. Oh, and they dump the trailer first, to maintain traction on the truck.

 

[3 Horse Ranch]

That practice is only commonspread in Scandinavia, where they have a lot of less intensively used roads, and lots of natural rock. And as you can see, the Swedish are allowed to haul 60 ton GVW, usually dont use AWD trucks, and more often use a wheel loader to spread the gravel than a grader. Oh, and they dump the trailer first, to maintain traction on the truck.

Quite a few of our jobs were with over 100 dump trucks unloading at an average of 1 per minute. The safest way was the double spread. I'd spread mine, a grader would smooth it out and two rolling compactors would compact it, the next truck would lay his load next to mine and so on. I worked one refinery job where the "safety officer" said it was too dangerous to have both boxes up at the same time. So we had to dump the trailer and back up to where the truck spread ended while trying to keep our trailer straight over a spread of loose material that it wanted to slide sideways off of as we backed, while the next truck spread his trailer inches from mine. Most dangerous job I ever worked.

 

[Renze]

Quite a few of our jobs were with over 100 dump trucks unloading at an average of 1 per minute. The safest way was the double spread. I'd spread mine, a grader would smooth it out and two rolling compactors would compact it, the next truck would lay his load next to mine and so on. I worked one refinery job where the "safety officer" said it was too dangerous to have both boxes up at the same time. So we had to dump the trailer and back up to where the truck spread ended while trying to keep our trailer straight over a spread of loose material that it wanted to slide sideways off of as we backed, while the next truck spread his trailer inches from mine. Most dangerous job I ever worked.

Here in Holland this would be a typical situation: 8x8 trucks hauling beach sand from a dredge pond, levelled and rolled in by a wheel loader. Graders are only used on large scale road projects, and owned by a handfull of specialised grading contractors. Dozers you see here less than in the rest of Europe too, only if mucky conditions demand so

When i show this to my pal in Southern Finland, he is amazed by how we waste our sand as fill: In Finland they ground all spoils dug from the Helsinki metro extension to fine sand to make concrete: over there, the soil consists of clay, loam, peat or rocks, but sand is scarce...

 

[4570Man]

That practice is only commonspread in Scandinavia, where they have a lot of less intensively used roads, and lots of natural rock. And as you can see, the Swedish are allowed to haul 60 ton GVW, usually dont use AWD trucks, and more often use a wheel loader to spread the gravel than a grader. Oh, and they dump the trailer first, to maintain traction on the truck.

Why would they not truck spread? That’s the fastest least work intensive way assuming it’s fairly level with enough overhead clearance. It makes even more sense of they’re pulling a pup since it doesn’t have to be backed around sideways to dump the truck.

 

[4570Man]

Here in Holland this would be a typical situation: 8x8 trucks hauling beach sand from a dredge pond, levelled and rolled in by a wheel loader. Graders are only used on large scale road projects, and owned by a handfull of specialised grading contractors. Dozers you see here less than in the rest of Europe too, only if mucky conditions demand so

When i show this to my pal in Southern Finland, he is amazed by how we waste our sand as fill: In Finland they ground all spoils dug from the Helsinki metro extension to fine sand to make concrete: over there, the soil consists of clay, loam, peat or rocks, but sand is scarce...

Spreading in a 4 foot lift is a way different situation than spreading gravel on a road.

 

[4570Man]

Quite a few of our jobs were with over 100 dump trucks unloading at an average of 1 per minute. The safest way was the double spread. I'd spread mine, a grader would smooth it out and two rolling compactors would compact it, the next truck would lay his load next to mine and so on. I worked one refinery job where the "safety officer" said it was too dangerous to have both boxes up at the same time. So we had to dump the trailer and back up to where the truck spread ended while trying to keep our trailer straight over a spread of loose material that it wanted to slide sideways off of as we backed, while the next truck spread his trailer inches from mine. Most dangerous job I ever worked.

What was the logic behind that? Even if it’s a fixed pintle which most dump trucks are it still provides zero stability against a roll over.

 

[Renze]

Spreading in a 4 foot lift is a way different situation than spreading gravel on a road.

Just, we dont spread gravel that way, as it has to be imported from abroad. We do dump a foot lift of crushed concrete under new asphalt roads, but maintaining a road by applying crushed concrete is not something you see happen here... a road here gets paved with bricks or gets asphalted, gravel roads are rare.

Even for our world famous Delta works dams, the boulders to protect the dams from washout are all imported.

 

[Renze]

Why would they not truck spread? That’s the fastest least work intensive way assuming it’s fairly level with enough overhead clearance. It makes even more sense of they’re pulling a pup since it doesn’t have to be backed around sideways to dump the truck.

Have you seen the video ? They do truck spread, but just dress up with a loader

 

[Hay Dude]

I noticed neither truck had spreader chains, they just dump in piles. This is what we routinely did, except if you timed it right your trailer ran empty right over the start of the truck spread.

That was skilled and impressive.