DURATION

 

The duration is used to quantify the time and associate it with a number and unit.

Depending on the type of entities treated within VISUAL PLANNING, the duration units may be:

  • The day,
  • The Half-day,
  • The Hour,
  • The Minute.

The primary duration used by VISUAL PLANNING is that of the event which is based upon the difference between:

  • Event end date/time,
  • and event start date/time.

This duration may be totaled, converted, and used, by a number of functionalities.

The maximum duration of an event is 20000 days.

CONFIGURATION

 

The configuration involves initializing the duration of an event.

 

Creation rules

 

The creation rules are used as the origin of the event duration.

This property is managed by the duration, by default, of the creation rules, which may be:

  • Either undefined,
  • Or based on a heading,
  • Or a fixed value,
  • Or the result of an operation involving two headings,
  • Or, based upon the resource calendar.

The creation rules also determine whether the event is worked or not. This is a critical factor in understanding the date/time of the end of the event, as a function of its duration, or, on the other hand, to understand the duration of an event as a function of its end date/time (case with the Events import).

Calendars

 

The hourly and daily calendars are another parameter for determining the duration of an event, if it is worked.

In fact, the periods marked as not worked in the hourly and daily calendars are not included in the duration of an event said to be worked.

Example:

The event follows a daily calendar, with Saturdays and Sundays not worked.

This event starts on Friday and ends on Monday. Its duration will be:

  • Event worked: 2 Days,
  • Event not worked: 4 Days.

USE

The duration of an event is used by numerous other functionalities in VISUAL PLANNING.

 

Impact on other functionalities

Load

 

The load of an event can be determined as a function of its duration, if the load type is:

  • Automatic,
  • in days, by day,
  • in hours by day,
  • In days by hour,

Example:

An event, with a duration of 2 days, has a load of 2 days per day.

The value of the load is therefore 4 days.

 

Valuation items

 

The valuation variable of an event is determined from its duration, if the time unit for the valuation item is:

  • the day,
  • the hour,
  • the load, in days (if the type of load is variable with the duration),
  • the load, in hours (if the type of load is variable with the duration),
  • Depending on the type of event.

Example 1: The time unit for the valuation item is the day.

An event, with a duration of 2 days, has a valuation variable with a value of 2.

The total value of the valuation item is therefore 4.

Example 2: The time unit for the valuation item is the load in days.

An event, with a duration of 2 days, has a load of 2 days per day.

The value of the load is therefore 4 days.

This event has a valuation variable with a value of 2.

The total value of the valuation item is therefore 8.

 

Calculations for events durations

Control total type heading

A Control Total type heading is used to total the durations of multiple events.

This duration can be:

  • Duration of events (h): The total of the duration for events converted into hours. If the events are in hours, this is simply the total of the durations of these events.
  • Duration of events (d): The total of the duration for events converted into days. If the events are in days, this is simply the total of the durations of these events.
  • Achieved duration (h): The total of the completed duration of events, converted into hours.
  • Achieved duration (d): The total of the completed duration of events, converted into days.
  • Duration of free periods (h): These are the free periods in the planning, converted into hours.
  • Duration of free periods (d): These are the free periods in the planning, converted into days.
  • Occupation duration (h): The period during which the resource is occupied, in hours. This duration is calculated using the coverage, or not, of the free periods, and may not exceed the total of the latter.
  • Occupation duration (d): The period during which the resource is occupied, in days. This duration is calculated using the coverage, or not, of the free periods, and may not exceed the total of the latter.

Example:

A resource with a daily calendar, when only Saturdays and Sundays are not worked. In addition it has an hourly calendar, with 8 hours worked per day.

Within this resource an event exists during the week. It starts on the Monday and ends the next Thursday. This event is completed to a level of 50%.

The duration, in days, of the event is therefore 4 days. The duration, in hours, is 32 hours.

Its completed duration in days is therefore 2 days. Its completed duration in hours is therefore 16 hours.

The duration of the free periods in days during the week, is 1 day. The duration of the free periods in hours, is 8 hours.

 

Workload

A workload is used to total the durations of multiple events over a series of time periods.

Each of these periods is linked to the time scale on a planning view, which is used to visualize the load.

This duration can be:

  • Duration of events (h): The total of the duration for events converted into hours. If the events are in hours, this is simply the total of the durations of these events.
  • Duration of events (d): The total of the duration for events converted into days. If the events are in days, this is simply the total of the durations of these events.
  • Occupation duration (h): The period during which the resource is occupied, in hours. This duration is calculated using the coverage, or not, of the free periods, and may not exceed the total of the latter.
  • Occupation duration (d): The period during which the resource is occupied, in days. This duration is calculated using the coverage, or not, of the free periods, and may not exceed the total of the latter.
  • Duration of free periods (h): These are the free periods in the planning, converted into hours.
  • Duration of free periods (d): These are the free periods in the planning, converted into days.

Example:

An event starts on the Monday and ends the next Tuesday.

A load, calculating the duration in days, is shown on the daily time scale.

The value of the load is equal to 1 day on Monday and 1 day on Tuesday.

Events Report

An Events report is used to establish the total of the durations of multiple events.

This duration can be:

  • Duration of events (h): The total of the duration for events converted into hours. If the events are in hours, this is simply the total of the durations of these events.
  • Duration of events (d): The total of the duration for events converted into days. If the events are in days, this is simply the total of the durations of these events.
  • Achieved duration (h): The total of the completed duration of events, converted into hours.
  • Achieved duration (d): The total of the completed duration of events, converted into days.
  • Duration of free periods (h): These are the free periods in the planning, converted into hours.
  • Duration of free periods (d): These are the free periods in the planning, converted into days.

Events values heading

 

An Events Values type of heading is used to assign the duration of an event to a resource.

This duration can be:

  • Duration in hours: This is the duration of the event, if in an hourly format; or a conversion into hours if it is daily format.
  • Duration in days: This is the duration of the event, if in an daily format; or a conversion into days if it is hourly format.

Operation type heading

 

An Operation type heading, in duration mode, is used to calculate a duration as the difference between two dates, sourced from two headings, of the type:

  • Date/hour,

  • or event value.

Example:

This heading is used to establish a calculated duration as being the difference between the end date of an event and the start date of another.

Conversion of days into hours

 

A duration may be converted into a number of hours or a number of days.

Example:

A daily-counted event lasts 3 days, the calendar for the event indicates that each day lasts 8 hours.

The conversion into days, of the daily duration of this event, returns the value of 24 hours.

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