Ladder Scheduling with Microsoft Project

Ladder Scheduling with Microsoft Project

Ladder Scheduling with Microsoft Project

Large negative lags are often considered unacceptable and Ladder Scheduling is a technique used to link a set of tasks that have substantial overlap, such as pipe laying operations.

Some contracts do not permit Leads (Negative Lags) in contract schedules and thus creating a program without either open ends or Leads becomes very difficult with Microsoft Project because Microsoft Project does not allow two relationships (links) between two tasks as most other products.

Most other scheduling products allow multiple relationships between two tasks. For example:

  • Oracle Primavera P6 allow four relationships between two activities and thus Ladder Scheduling may be simply achieved using a SS+ Lag and FF + Lag between two activities.
  • On the other hand products like Elecosoft (Asta) Powerproject allows an unlimited number of relationships between tasks because leads and lags are placed on the task and not the relationship which in my opinion is far mor logical.
  • The example below was create in P6, where the tasks are linked using two relationships, a SS+3d and a FF+3d,

Ladder Scheduling with Microsoft Project

Microsoft Project does not allow two relationships between tasks but Ladder Scheduling may be achieved by:

  • Commencing a chain of tasks with a Start Milestone,
  • Connect the Start Milestone to each task with a Start to Start plus the appropriate lag and
  • Connect each task to their successor with a Finish to Finish relationship plus the appropriate lag:

Ladder Scheduling with Microsoft Project

Accelerate your understanding of scheduling software to advance your scheduling career and be able to prepare better schedules with Eastwood Harris books, training courses and online videos on the following software packages:

  • Microsoft Project,
  • Oracle Primavera P6 and
  • Elecosoft (Asta) Powerproject

Online video training is available through Udemy through following these links:

Please follow these links:

  • Eastwood Harris books and training materials are available here https://www.eh.com.au.
  • Eastwood Harris inhouse, one-to-one and public training courses are offered through Primaskills Pty Ltd, more details here>>>>.
  • Resources for Oracle Primavera P6 users such as third party software that works with P6 and technical papers on Primavera P6 at https://primavera.com.au/.

Paul E Harris

Director Eastwood Harris Pty Ltd

 

Identifying Driving Predecessors in Microsoft Project

A task may not be on the Critical Path and may have more than one predecessor.

A Driving Relationship is the predecessor that determines the Early Start of a task.

  • Oracle Primavera P6 and Elecosoft (Asta) Powerproject always display the driving predecessors and successors in the P6 Predecessor and Successors form and the Powerproject Links form.
  • Microsoft Project 2007 introduced a Task Drivers form that indicates which is the driving predecessor and whether the schedule has been Resource Leveled. It also displays the effects of leveling.

In Microsoft Project 2013 the Task Drivers form has been renamed Inspect Task and additional functionality has been added. Select Task, Tasks group, Inspect, Inspect Tasks icon open the Task Inspector pane:

  • The picture below shows Task 10 is the driving predecessor of Task 11.

Identifying Driving Predecessors in Microsoft Project

  • The picture below shows that Task 15 has issues with resource overloading and makes some suggestions for resolving the issues:

Accelerate your understanding of scheduling software to advance your scheduling career and be able to prepare better schedules with Eastwood Harris books, training courses and online videos on the following software packages:

  • Microsoft Project,
  • Oracle Primavera P6 and
  • Elecosoft (Asta) Powerproject

Online video training is available through Udemy through following these links:

Please follow these links:

  • Eastwood Harris books and training materials are available here https://www.eh.com.au.
  • Eastwood Harris inhouse, one-to-one and public training courses are offered through Primaskills Pty Ltd, more details here>>>>.
  • Resources for Oracle Primavera P6 users such as third party software that works with P6 and technical papers on Primavera P6 at https://primavera.com.au/.

 

Paul E Harris

Director Eastwood Harris Pty Ltd

Oracle Primavera P6 – Retained Logic or Progress Override or Actual dates?

I recently reviewed some contractor schedules and I was surprised that the schedulers had changed the Schedule Options, When scheduling progressed activities use option from the default of Retained Logic to Actual Dates and they both ended up with meaningless programs because their circular relationships were no longer being identified.

This paper aims to explain the difference between the way Schedule Options, When scheduling progressed activities use option of Retained Logic, Progress Override and Actual Dates calculate, so when people change the default of Retained Logic they will be aware of the risks they are running.

Click here to download the paper>>>>>

Oracle Primavera P6 - Retained Logic or Progress Override or Actual dates?

Oracle Primavera P6 – Retained Logic or Progress Override or Actual dates?

Accelerate your understanding of scheduling software to advance your scheduling career and be able to prepare better schedules with Eastwood Harris books, training courses and online videos on the following software packages:

  • Microsoft Project,
  • Oracle Primavera P6 and
  • Elecosoft (Asta) Powerproject

Online video training is available through Udemy through following these links:

Please follow these links:

  • Eastwood Harris books and training materials are available here https://www.eh.com.au.
  • Eastwood Harris inhouse, one-to-one and public training courses are offered through Primaskills Pty Ltd, more details here>>>>.
  • Resources for Oracle Primavera P6 users such as third party software that works with P6 and technical papers on Primavera P6 at https://primavera.com.au/.

 

Paul E Harris

Director Eastwood Harris Pty Ltd

5 June 2023

Microsoft Project Blank Project Issues

Introduction

When a user either uses the Project 1 file that is created when Microsoft Project is run or when a user creates a new project using the command File, New, Blank Project then the user ends up with a project file that is far from ideal. There are a number of issues with the file that is created uing the Microsoft Project Global Template which is displayed in Organiser as the Global.MPT and it is recomended that this file is never used.

Aim

The aim of this article is to explain the issues with this template and suggest a solution which wil result in a project template that is far more user friendly than the project file created by selecting the command File, New, Blank Project.

Click here to download a copy of this paper >>>

Eastwood Harris Resources

Accelerate your understanding of scheduling software to advance your scheduling career and be able to prepare better schedules with Eastwood Harris books, training courses and online videos on the following software packages:

  • Microsoft Project,
  • Oracle Primavera P6 and
  • Elecosoft (Asta) Powerproject

Online videos available through Udemy by following these links:

Please follow these links:

  • Eastwood Harris books and training materials are available here https://www.eh.com.au
  • Eastwood Harris inhouse, one-to-one and public training courses are offered through Primaskills Pty Ltd, more details here>>>>.

Paul E Harris
Director Eastwood Harris Pty Ltd
24 May 2023
www.eh.com.au

Oracle Primavera P6 PPM – Isolating the Earliest and Latest Predecessor Start Dates of a Milestone

I recently asked the question about P6: “How does one show a milestone’s date to reflect the earliest start date of the group predecessors’ activities rather than total float driving from the group predecessors’ activities.”

After I little bit of thought I devised the following solution.

Download a pdf of this article by clicking on this link>>>

To show the earliest Start Date and Latest Finish date of multiple predecessors for a Milestone you need to make the Milestone Task a LOE and hook up to all the predecessor tasks with both a FS and a FF link as per the picture below:

If you want to show other LOE activities as a LOE then you will need to create an Activity Code for normal LOE activities and Milestone LOE activities and a bar style for both and apply the filter to the two LOE bar styles in the Bars form.

If you want to show other LOE activities as a LOE then you will need to create an Activity Code for normal LOE activities and Milestone LOE activities and a bar style for both and apply the filter to the two LOE bar styles in the Bars form.

Eastwood Harris Resources

Accelerate your understanding of scheduling software to advance your scheduling career and be able to prepare better schedules with Eastwood Harris books, training courses and online videos on the following software packages:

  • Microsoft Project,
  • Oracle Primavera P6 and
  • Elecosoft (Asta) Powerproject

Online videos available through Udemy by following these links:

Please follow these links:

  • Eastwood Harris books and training materials are available here https://www.eh.com.au
  • Eastwood Harris inhouse, one-to-one and public training courses are offered through Primaskills Pty Ltd, more details here>>>>.

Paul E Harris
Director Eastwood Harris Pty Ltd
16 May 2023
www.eh.com.au