Exam math · 12 concepts

The math, concept by concept

The exam hands you the formulas. These pages make each one something you recognize instead of something you hunt for.

Volumes

How much a tank holds.

Water held in a length of pipe: the cylinder formula lying on its side..

Flow through a pipe or channel is the cross-sectional area times how fast the water moves..

How long water spends in a basin: the volume divided by the flow through it..

Pounds of chemical needed to hit a target concentration in a given flow.

Relating chemical weight to solution weight, and diluting stock solutions to working strength..

How much of a pollutant a process removes, as a percentage of what came in..

Converting between water column height and pressure at the bottom of it..

The power needed to move water against head, and how motor and pump efficiency inflate it..

The handful of conversions nearly every problem passes through..

Daily averages, and pounds-per-day loadings applied over areas or volumes for process control questions..

The drill that makes the provided sheet actually useful: name the formula before touching numbers..