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.
Definition of 'Duration'. Definition: As the term suggests, it is expressed in the form of number of years and measures a bond's sensitivity to change in interest rates. To be specific, it measures the change in market value of security due to 1% change in interest rates. Description: Usually, the higher the duration, the more is the volatility in the prices.