Palletization & Freight

How packages move as freight and how carriers charge for them: pallet standards, unit load stability, dimensional weight and freight class.

10 references Checked against published standards

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Hazmat Segregation Table: Four Codes, and One With No Distance

The O code sets no distance. It asks only that a leak from one package could not reach the other, which states a result rather than a measurement you can check. The four-foot figure comes from another section. It governs one narrow pairing...

Oct 27, 2026 4 questions answered Read the reference

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Cargo Securement Rules: The Second Set of Numbers That Governs The rule carries two sets of force numbers, credits a tiedown by where its ends land, counts straps by length rather than behavior, and gives friction no credit at all. Oct 25, 2026 Military Shipment Marking: Two Bar Codes, Two Different Payloads A shipping label carries two bar codes that do not hold the same data, the 2D symbol is only recommended, and freight nobody can identify goes to disposal rather than back. Oct 22, 2026 Shrink Wrap vs Stretch Wrap: Process, Standards and Trade-offs One process uses heat and one does not, and that decides the equipment, the risks and the costs. Plus why the two sets of published numbers cannot be compared. Oct 17, 2026 Safe Stacking Load: What a Compression Figure Actually Allows The divisor does most of the work, and three published sources disagree about it by 210 pounds. Oct 8, 2026 Stretch Wrap Containment Force: The Number With No Test Method A performance number with illustrations behind it instead of a method. Oct 2, 2026 ISPM 15 Pallet Marking: How to Read the Stamp Before It Ships Four fields, four treatments, and the placement mistake nobody writes about. Sep 30, 2026 Standard Pallet Sizes: Why the Order of 48 by 40 Changes the Load The stringer runs first, and that decides whether a trailer holds 26 pallets or 30. Sep 22, 2026 Freight Class After the NMFC Rewrite: Density Now Decides It Classification stopped being a lookup in July 2025 and became a measurement. Sep 24, 2026 Dimensional Weight: The Formula Held, but Its Inputs Have Moved Two of the numbers behind the calculation changed, and most guidance still describes the old ones. Sep 24, 2026

The other three hubs

Board & Box Specifications 10 references Package Testing & Certification 11 references Cushioning & Protective Materials 10 references