Hardie plank siding is a premium brand of cement board siding (also known as fiber cement board siding) produced by the James Hardie Company.ardie plank can be purchased with a wood-grain look, a plain smooth look or a stucco type finish. Hardie plank also comes in simulated cedar shingle planks.
activity duration. Period (hours, days, weeks) required to complete an activity. Activities with zero duration are called milestones.
The amount of time you spend participating in one session of physical activity is your exercise duration.. Your fitness level and goals determine how you figure what your exercise duration should be for each workout. The intensity at which you work out also factors into duration.