Architectural Flashing Supply
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Material takeoffs and quantity reconciliation · Lesson 3 of 4

Material takeoffs and quantity reconciliation: methods and worked application

The nine-step method on an example job: runs and units, a stated piece basis, girth and strips per sheet, packing the sheets by width, where the extra metal goes, weights, accessories, the flat allowance, six checks, and who reads, measures and confirms.

You will be able to: Carry an example job from schedule to pieces, strips, sheets, pounds and accessory counts in nine steps, state the assumptions behind each number, and run six reconciliation checks.

13 min · 12 slides · 8 questions

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Slide 1 of 12

The method in nine steps

Nine steps: read the schedule and scope; tag every run; measure each run in one unit; choose a piece basis; count pieces; work out girth and strips; pack the sheets; add weight and accessories; reconcile and sign.

Every step hands one stated number to the next.

Reconciling is comparing a quantity with a second figure that should agree, and writing down any gap and its cause.

The nine steps of a material takeoffA flow of nine boxes in a snake. Row one, left to right: read the schedule and scope, tag every run, measure each run in one unit. Row two, right to left: choose and state the piece basis, count pieces per run, girth and strips per sheet. Row three, left to right: sheets per material and gauge, weight and accessories, reconcile and sign. A dashed arrow loops from the last box back to the first when a check fails.Nine steps, each handing on one numberRead thescheduleand scopeTag everyrunMeasureeach run inone unitChoose andstate thepiece basisCount piecesper runGirth andstrips persheetSheets permaterial andgaugeWeight andaccessoriesReconcileand signsix checksA failed check sends you backFrom the drawingArithmeticRed outline: an AFS register is used

A flow of nine boxes in a snake. Row one, left to right: read the schedule and scope, tag every run, measure each run in one unit. Row two, right to left: choose and state the piece basis, count pieces per run, girth and strips per sheet. Row three, left to right: sheets per material and gauge, weight and accessories, reconcile and sign. A dashed arrow loops from the last box back to the first when a check fails.

Every step names the number it hands to the next. Navy boxes come from the drawing, teal boxes are arithmetic, and a red outline marks a step that uses an AFS register (piece lengths, sheet size, templates, weights).

Sources

Glossary

Piece basis
The piece length a takeoff counts on: AFS's 10 ft standard or its 126 in maximum. The same run gives different piece counts on each, so the takeoff states which it used.
First-fit decreasing
The packing rule in AFS's Material Takeoff tool: strips are sorted widest first and each goes on the first sheet it fits. It is a heuristic, so its sheet count is an upper estimate.
Reconciliation
Comparing a quantity with a second figure that should agree, finding the cause of any gap, and writing it down.
Flat allowance
AFS's flat default of 1.1 times a linear-foot quantity, always rounded up and shown as an estimated allowance, not a measured waste rate.