Panelisation of the drawn skins: roof faces grouped by panel length and face shape, wall runs grouped by run height, gable-end infill as its own cut-to-rake line, clerestory risers separately, and wainscot separately.
Also called: roof panels · wall steel · panel count · panel length · gable end steel
- 1Sheet count per face is the eave span divided by the roofing product's net coverage, then padded for cut waste — 15% on triangles, 10% on trapezoids, none on rectangles.
- 2Panels longer than the 40ft mill and trucking ceiling are split into segments and the line says so.
- 3Every panel line carries a structured lengthFt, because steel is PRICED BY THE FOOT.
- 4Gable-end steel gets an average sheet run so its per-foot price bills against a real length.
- 5Shingle roofs branch entirely: squares plus an OSB deck line instead of panels.
Two ways of getting steel wrong both reached real money. Reading a panel's length back out of its written description collapsed every different length into one order row nobody could cut. And a panel line carrying no length billed its sheet count against a per-foot rate — which put $137 of steel on an entire endwall, and at catalogue rates priced a 4,000 sq ft roof at $225. Panels now carry their length and their unit as data all the way to the order, and a check fails the build if a panel line ever loses either one.
- Panel orders with no length, which a yard cannot cut to.
- Per-foot steel priced against a sheet count.
- Triangular and trapezoidal faces counted as if rectangular.
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