A way of reading this site uses
The Tension Map: Where a Garment Takes the Strain
Updated
Pattern pieces 4 sections
Everything worn carries load. A skirt hangs from its waistband, lacing pulls on the holes it runs through, and a clasp takes the pull of whatever it closes. The tension map is our name for a diagram of where that load goes.
It is a qualitative diagram. It marks the main seams that bear load, the ties and lacing that take strain, and the fastenings that work hardest, and it gives none of them a number. It can be drawn for a garment or for a piece of jewelry.
What counts as evidence
A path goes on the map only when something supports it: a study of the surviving object, a museum record, a period cutting book, or construction so plain that it can be stated outright, such as a skirt hanging from its waistband. The map does not claim to show every pull in an object, and it never gives values.
Solid lines and dashed lines
A solid line is a path the evidence supports. A path that is inferred rather than documented is drawn dashed and labelled inferred, and the text beside the diagram says what the inference rests on. The same rule holds for the writing around it: a sentence about where strain falls makes clear whether it comes from a source or is inferred.
Each tension map also comes with a text version, so the same paths can be followed without the picture.
The maps so far
The 18th-century clothing entry maps a pair of stays: the lace drawing the back edges together is its one solid path, while the paths for the straps, busk, tabs and the pull round the body are drawn dashed, each labelled inferred. The crinoline entry maps an 1857 cage, with the tapes seen in the museum's photograph drawn solid; the hoops' weight, the buckle's pull and the skirt over the cage are dashed lines, each labelled inferred.
A comparison, not a design intent
This site compares dress to a machine worn on the body: boning works like a frame, lacing like an adjustable valve, a spring clasp like a safety catch. The comparison comes after the construction and material evidence, never in place of it. It describes how a part behaves, not what its maker meant it to do.