Who Owns The Float In A Construction Schedule?

Who Owns the Float in a Construction Schedule?

In this blog, we’re diving deep into a critical aspect of construction scheduling: float. If you’ve ever wondered who owns the float in a construction schedule and why it matters, you’re in the right place. By the end of this blog, you’ll have a fresh perspective on float, which can help you manage your projects more effectively and reduce risks.

What Is Float in a Construction Schedule?

Let’s start by breaking down what float actually is. Imagine your construction schedule as a timeline with a start and end date. Along this timeline, we have a series of activities connected by dependencies, which help us determine the critical path. Float, in this context, is the amount of time that an activity or series of activities can be delayed without affecting the project’s end date.

There are two main types of float:

• Free Float: The time an activity can be delayed without delaying the early start of any subsequent activities.
• Total Float (or Project Float):The total time an activity or a sequence of activities can be delayed without delaying the project’s end date.

Float is essential because it allows for some variation in the schedule without pushing back the project completion date. This is crucial for managing unexpected delays or disruptions.

The Critical Path in Project Scheduling

Understanding the critical path is key to managing float. The critical path is the sequence of activities that dictates the project’s minimum duration. If any activity on this path is delayed, the entire project will be delayed. The critical path is determined through a mathematical algorithm that calculates how much float each activity or sequence of activities has.

It’s important to note that a project schedule should always have some float. A schedule with no float is too rigid and doesn’t account for real-world uncertainties. If someone tells you that a critical path should have zero float, be cautious. A critical path without float is a risky proposition, and having float in your schedule is vital.

How to View Construction Schedules: CPM vs. Takt

In construction scheduling, there are different methodologies, like the Critical Path Method (CPM) and Takt scheduling.

• CPM: In a CPM schedule, the focus is on calculating the critical path and managing float. Float is built into the schedule to absorb delays and disruptions.
• Takt Scheduling: In Takt scheduling, projects are divided into phases, each with built-in buffers (similar to float). These buffers are crucial for maintaining a steady flow of work and managing delays. Unlike CPM, Takt relies on a critical flow path that includes these buffers to ensure smooth progress.

Importance of Buffers in Construction Projects

Buffers or float are not just nice-to-have; they are essential. Without buffers, a small delay can snowball into significant project delays. For example, if a project schedule is too tight and lacks buffers, any minor issue can lead to cascading delays, increased overtime, and potential project chaos.

A well-planned schedule with appropriate float or buffers helps prevent such problems. It ensures that the project remains on track even if unexpected issues arise.

Who Owns the Float?

Now, let’s address the question of ownership. Typically, float should be used to manage delays, interruptions, and variations. If your contract specifies that the owner owns the float or that it is shared, you need to be cautious. Float should not be used to cover delays caused by design changes or other non-external issues.

Here’s how to handle float effectively:

• Discuss Float Allocation: Talk with project stakeholders about the amount of float needed and how it will be used.
• Perform Risk Analysis: Identify potential risks and delays during the planning phase. Use this analysis to determine the amount of float or buffers required.

What to Remember About Floats & Buffers

To sum up, here are the key takeaways:

• Float is Essential: Never have a schedule without float or buffers. It’s crucial for managing project risks and uncertainties.
• Avoid No-Float Schedules: A schedule with no float is risky and can lead to project delays and inefficiencies.
• Understand Contract Terms: Ensure your contract clearly outlines how float is managed and used.

Final Thoughts

Float in a construction schedule is a critical element for successful project management. It helps absorb delays and manage risks, ensuring that your project stays on track. Whether you use CPM or Takt scheduling, always include float or buffers in your plans. This approach will help you navigate challenges and keep your projects running smoothly.