Skills TestModule 3 · Cargo, Weight and the Law of Physics
Week 14 of 52
Cargo securement: the physics of restraint, working load limit, tiedown math
CFR49 CFR 393 subpt IAAMVAsection 3ELDTA1.5.1ClassA, B and C
The seven videos
- MondayLesson 1 of 5
Why the 50% rule exists: the physics of a hard stop
Covers the required minimum, then goes past it.
- TuesdayLesson 2 of 5
Working load limit vs. breaking strength: the safety factor nobody explains
Covers the required minimum, then goes past it.
- WednesdayLesson 3 of 5
Friction and the deck: why "it's heavy, it's not going anywhere" doesn't hold up
Covers the required minimum, then goes past it.
- ThursdayLesson 4 of 5
Tiedown angle: the trig problem every load has
Covers the required minimum, then goes past it.
- FridayLesson 5 of 5
Putting it together: commodity rules, real violations, and what actually gets you out of service
Covers the required minimum, then goes past it.
- SaturdayTips from the seat
Tips from the seat, on this week’s subject. Not written yet.
- SundayCase law and war stories
Case law: one chain, a 19-ton steel coil, and a train that hit a truck