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 Level of Effort activity duration is dependent on its predecessor and/or successor assignments. It basically contracts and expands based on what it is linked to. They can be useful for applying. hours for overhead type of activities to a project or turnaround.