Tie-Down Safety bulletin

[3930dave]

This won't be news to the commercial guys, just thought I'd toss it out for us weekend haulers...

http://www.lift-it.com/tie_down_safety_bulletin_english.pdf

Apologies in advance if a re-post.

(pdf = 3Meg, TBN appears to only allow 1Meg max. to be posted inline).

Rgds, D.

 

[Dr Dave]

Thanks for posting, UV rays are often overlooked as a damaging factor.

Dave

 

[JJZ 109]

Thanks for posting, UV rays are often overlooked as a damaging factor.

Dave

True enough. Last week I snapped a one inch ratchet strap used to hold down stepladders on my flat bed bucket truck. That strap had been outdoors in all kinds of weather from April to November for about 4 years. It served as a reminder that I need to keep a better eye on them. Luckily I had some new replacements handy.

 

[creekbend]

Thanks for posting. Good Info.

 

[3930dave]

You're welcome guys.

The "Fault Condition" pictures struck me as something from a LEO 101 Roadside Inspection course, so it caught my eye - not being in the industry. If it's been a while since you've studied Engineering Mechanics, those Load Force vs. Strap Angle diagrams are a good reminder of the Fizx.

Yes, UV is a sneaky problem.

Rgds, D.

 

[oldballs]

Thanks Dave, which brings me to a question. I'm not commercial but do mow for friends, sometimes for two hours at a time in our hot summers. Using the tie straps, I like to wrap it around the front and rear axle. That rear axle/transmission gets really hot. Thus, I take a break before loading and tying down to let it cool down a bit before attaching the straps. Does that amount of heat make any differance in the short term or long term use of straps?....Anybody?

 

[3930dave]

OB - guessing you are running a Hydrostatic.....

Don't have direct experience to answer with, but this is what I'd do....

Find the typical material content for a strap. Use a IR thermometer to read the surface temperature on the Trani/axle.

Matweb has tons of data - look under Thermal Properties.

MatWeb - The Online Materials Information Resource

Example is for Nylon66. Don't know if that is a typical material, just pulled that out of you-know-where, for illustration.

Maximum Service Temperature, Air 70.0 - 220 degC, 158 - 428 degF, Average value: 143 degC

Quite a range listed.... so I might be tempted to wrap your axle with some kind of insulator (header tape ?) if the surface temperatures you measure are high.

Rgds, D.

 

[oldballs]

Dave,......there's nothing like the facts to get the right answer. Thanks again. Think I'll go with some kind of sleeve/wrap next summer. Plus the straps also get some minor abrasion where they rub on some edges. So far I haven't designed a chain/binder hook up but may get to that also. Cheers, Mike

 

[3930dave]

You're welcome Mike.

If you can get a hold of some old inner tubes, that might work well as a sleeve on the tie-down.

I helped a neighbour change a tube on his Harley recently (roofing nail !), they use a pretty thick tube material. I've even used bicycle tubes as a better-than-nothing protection.

Rgds, D.

 

[Soundguy]

old fire hose makes great sleeves too.