> ## Documentation Index > Fetch the complete documentation index at: https://offthepace.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Lap Decomposition: the seven-term identity at every scale > Three features that apply the seven-term lap decomposition fuel, compound, rubber, ambient, constructor, dirty air, driver skill at per-lap, full-race, and per-sector resolution. ## What this pillar does The seven-term identity says every lap time is the sum of six physics components plus driver skill. This pillar makes that identity visible at three different scales: * **Per lap** the Waterfall shows a single driver's full breakdown as an additive bar chart. * **Full race** How the Race Was Lost sums the per-lap components across an entire race, turning fractions of a second into total minutes of time lost or gained. * **Per sector** Sector & Corner splits the decomposition by timing sector, allocating each physics component to where in the lap it actually came from. All three features read directly from [`fct_lap_residuals`](/reference/models/fct/fct_lap_residuals), the transform model that closes the identity for every green lap in the dataset. The decomposition maths are documented in the Transform [Residual Decomposition](/transform/families/residual) family page. ## Every feature in this pillar A waterfall chart showing how fuel, compound, rubber, ambient, constructor, dirty air, and driver skill each contribute to a driver's pace delta, with track noise as a diagnostic. The per-lap decomposition summed across an entire race, turning average-per-lap components into total seconds gained or lost to each cause. The lap decomposition applied to each of the three timing sectors separately, so sectors sum correctly to the full lap total.