TILOS Task Calculation Part 1: Linear calculation models (Video blog)

This video blog / tutorial is showing some easy linear calculation models, that TILOS Linear Scheduling system uses to estimate task durations.

This is the start of a series of videos regarding TILOS task calculation.

This time:

  • Determining the Work rate = Quantity / Duration
  • Estimating the Duration = Quantity / Work rate


This video ist hosted by youtube. please change to the best resolution availlable in the bottom settings bar.
(Direct Link to video: http://youtu.be/C8UqKIblCRk)

 TILOS Task Calculation Series:

TILOS Task Calculation Part 1: Linear calculation models (Video blog)


When is the crew arriving at a special location?

Mission: Display the date, that a crew/activity is arriving at a special station

Sample application: A pipeline crew is working along the ROW. When is the crew arriving at the river?


  • Create a milestone task at each station you like to have the arrival date/time
  • Link the line activity start/finish to each milestone
  • Select the link option “Calculate lag by Distance tu Successor with the lag value 0. This will force the milestone nearest to the line
  • Add annotations to the milestones and set up the with tokens:

Station: {Start.Distance.Estimate}m
Arriving: {Start.Date.Estimate}

Result after Reschedule:


  • The symbol of the milestones can be set in the tab display of the task
  • The size of the milestones can be set in the tab  display of the time-distance cell
  • Station List as a Gantt spreadsheet:


How to calculate the meeting point of two lineage tasks

Mission: Calculate and display where and when two tasks will meet, that are working towards each other.

Sample application: Meeting point calculation in Tunnel construction with two driving tasks.

– Both tasks are calculated by duration  (calculation by profile is possible)
– The Quantity is calculated by the task length


– Create a finish-finish link between those two tasks
– Change the link type to “Calculate meeting point”.
– Reschedule the project.



With the “Lag” value can be defined a waiting time:
– The first task has to be arrived at this station (First is defined with the direction of the link)
– then wait the Lag time
– Then the second tasks arrives