Securement (chains specifically)

I'm working on what more I'll need to get when this rock hauling project starts, rocks have no attachment points.
Following the letter-of-the-law from the regs I'd need (4) 17,500WLL & (1) that's rated at 35,000WLL (that would be 3/4" G100!) for the biggest ones I'll move.
"Dear FMCSA; I need an interpretation, in writing, for this situation....."

 

I've seen a lot of rock moved. Other than the biggest, most irregular rocks it's pretty straightforward. If that's the case, though, you're going to want a lot of dunnage and a lot of chains.

 

5 isn't enough for me, no matter what they are rated at. I looked for "minimum of" but it's not there.
You are permitted OS & OW, 50-70k/lbs boulder, with an unstable base, POE scales on route. What would you feel good with.....

The commodity-specific rules take precedence over the general requirements of this section when additional requirements are given for a commodity listed in those sections.

In addition to the requirements of paragraphs (b) [hardwood blocking] and (c) [use only chains, placement] of this section, each boulder must be secured by a combination of chain tiedowns as follows:

(1) One chain must surround the top of the boulder (at a point between one-half and two-thirds of its height). The working load limit of the chain must be at least half the weight of the boulder.

(2) Four chains must be attached to the surrounding chain and the vehicle to form a blocking mechanism which prevents any horizontal movement. Each chain must have a working load limit of at least one-fourth the weight of the boulder. Whenever practicable, the angle of the chains must not exceed 45 degrees from the horizontal.

 

Grade 70 ....3/8ths 20' with hooks at both ends.

Tractor supply wants $89.99 . Is that a good price?

 

Should get b2 chains for that price

 

February edition of Movin Out has a ad on page 16 from Tri-State Trailer Sales 3/8ths 20' grade 70 with hooks on each end for $37.95

 

Came up 57 to 55 with a load of I bean last Tuesday.I could not believe how many loads of beam I seen with nothing but straps on them. Do these guys not understand how unsafe it is