Constraints In Project 2010

Introduction

There are three types of constraints available in Microsoft Project 2010

1. Flexible Constraints

As Soon As Possible

Project will schedule a task to occur as soon as it can occur. This is the default constraint type applied to all new tasks when scheduling from the project start date. There is no constraint date for an ASAP constraint.

As Late As Possible

Project will schedule a task to occur as late as it can occur. This is the default constraint type applied to all new tasks when scheduling from the project finish date. There is no constraint date for an ALAP constraint.

2. Semi-Flexible Constraint

Start No Earlier Than

Project will schedule a task to start on or after the constraint date that you specify. Use this constraint type to ensure that a task will not start before the specific date.

Start No Later Than

Project will schedule a task to start on or before the constraint date that you specify. Use this constraint type to ensure that a task will not start after the specific date.

Finish No Earlier Than

Project will schedule a task to finish on or after the constraint date that you specify. Use this constraint type to ensure that a task will not finish before the specific date.

Finish No Later Than

Project will schedule a task to finish on or before the constraint date that you specify. Use this constraint type to ensure that a task will not finish after a specific date.

3. Inflexible Constraint

Must Start On

Project will schedule a task to start on the constraint date that you specify. Use this constraint type to ensure that a task will finish on an exact date.

Must Finish On

Project will schedule a task to finish on the constraint date that you specify. Use this constraint type to ensure that a task will finish on an exact date.