How much matrix and aggregate a pour needs, and how many mixer batches that is

Three things that hold for the whole job: the volume one batch of your mixer actually holds, the system name exactly as the data sheet writes it, and the ratio off that data sheet as two part figures. Every pour in part B is worked out from this row, which is why it is typed once and not six times.

One card per pour or bay, in the order you place them. A card gives a volume once it has both an area and a finished thickness; without both it prints nothing and counts nowhere. The waste allowance is your own figure from your own past pours.

Poured it already and kept one total for the mix, with no split between matrix and aggregate? Leave both of the recorded boxes empty. They are the two figures you measured off the floor, and a blank there is a pour you have not recorded, not a pour you poured dry; the quantities, the batches and the split are worked out without them.

What each card comes to. A dash is not a figure of nothing: on the first four columns it means the card has no area or no finished thickness yet, and on the last two, full batches and the part-full batch, a dash can also mean this job has no usable mixer volume yet, whatever the card itself holds. Where a dashed card also carries both of the figures you drew off the floor, the note beside the table says so, because those two figures are added nowhere until that card has an area and a thickness. The working for every line is in the list that follows this table, one line per division.

The volume with waste, split in two at the parts from your own data sheet. The matrix is that volume times the matrix parts divided by the two parts added; the aggregate is what is left of the pour once the matrix is taken out, so the two always add back to the pour and the tenth of a gallon that rounding leaves falls on the aggregate.

One numbered row per batch your mixer takes for that pour, each split into matrix and aggregate at the parts you typed. Where that pour does not divide into whole batches the last row is a part-full batch printed at its own fill; where it divides exactly the ledger ends on a whole batch and prints no part-full row at all, and the glance says so in words where its figure would go. The footing carries three readings of that one pour and rounds none of them into another: what the batches add to with each charge rounded to a tenth of a gallon, what that pour's own split works out in part D, and the waste allowance you added, carried as its own named row because the batches carry it too.

Pour 2, Lobby bay 2, 260 sq ft at 0.375 in, in batches of 11.0 gal.

The pours with a volume, added. The recorded columns are the figures you wrote down off the floor, and they are added over the pours where you filled both of them, which is said in the row when that is not every pour. The working, including the difference and what the recorded figures come to as a share, is in the list that follows this table.

This arithmetic again, written out for anything that reads this page instead of looking at it: api.json beside this page carries every input, every output, the formula line by line, this worked example, and a list of what the record deliberately leaves out.