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.
A duration of time is defined as a specific number of ticks over a time unit. One example is a duration such as â3 minutesâ (3 ticks of a âminuteâ). Other examples are â42 millisecondsâ or â86,400 seconds,â which represents the duration of 1 day.