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.
To determine the project activity durations, the PM must consider the amount of effort required and the project resources that are available and will be used. Effort is the number of work units. Duration is the total time required based on the effort and the resources available (minus holidays and non-work days). Elapsed time is the calendar time (includes all dates, such as holidays and non-work days). See all posts in our PMP Concepts Learning Series.