Oversized precast

How are they going to be bolted/loaded to the trailer? When I pulled for UPI (United Precast) here in Ohio, they were mounted by 'rebar screws' to a tripod, and I strapped (of course) for extra securement. BOL said no chains for me, also. This was 5 or 6 years ago, wish I had pix. Had a dumb phone back then...

This is not the best pic, but it's similar. Hopefully the OS/OD guys will chime in for ya.



or, try this link: https://precast.org/2017/07/promoting-community-reducing-noise-precast-sound-wall/

 

You also will find your turning speeds drastically reduced. Some of those are very tippy more than usual.

 

We hauled o/s precast for one company last year and chains were ok with them, with corner protectors. This year, different customer and they only let us use chains on certain pieces, with edge protectors of course. Some of their "finished" pieces (wall panels), they only want straps on...and they require us to put a twist in each strap to help prevent it from "flapping" and leaving a mark.

 

I always go around a corner real slow with these things, for some reason, they just feel funny... although, when you think about it, the center of gravity really shouldn't be too bad. I used to haul some structural loads that might get to about 12' in height, and if they put a heavy piece up near the top, you'd think about turning too quickly with that too...

 

I've used pieces of rubber belting,
Or these... I've only used chains though, never straps.

 

You can still strap it. If it's at all rough or sharp protect your straps of course.

Keep in mind that the angle of your straps is less than ideal so use a few extras.

 

What kind of precast? Walls, Double T's, pipes, columns, etc?

Lots of times they'll have lifting shackles built in, so you want to work with those. And just like all concrete you only want to crank down when fully supported over the dunnage.

 

Similar to my tripod. No chains, tho? Yeah, one sided would feel funny. I had double banked.

 

As lonecowboy said, it depends on the precast, ive already had my indoc/training on all our products from coreslab. And it really depends.

It also depends on how the factory loads the stuff. In our case the double T which i posted elsewhere is more fragile than sheetrock. T beams are thick but we still only throw 3 straps on each end over the dunnage. Flat slabs, chains over dunage and straps for the diff, hard to break. Not impossible.

The way we have found to do our double Ts is 3 over the front dunnage, three straps over the rear dunnage, and only 1 saftey chain ran through the crane eylets on top and down over the thickest part near the T section pulling slightly back with edge protection.

Our load bearing walls have frames for support, which let us get very agressive with the securement on those.

Heres an example from the other day for visual on both a double t and flat slab , but not knowing what kind of precast, or how its loaded cant say for sure. No onsize fits all really. And on the slabs we chain through eyelets. There are more towards the front too.

Might have an example of the load bearing stuff, will see. Will have to edit it. Its an interesting frame we use.