Learn construction scheduling by building one.

Short lessons that make you do the math, not watch someone click through P6.

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Free during open beta. No account required to start.

Project finish:Day 15
Critical:Site prep → Foundation → Framing → Inspection

Try it: make Framing longer and watch the finish date move.

Scheduling is usually taught the wrong way.

Most schedulers learn fragments on the job for years. There's a faster path.

The old way
  • Dense theory, no practice
    A 500-page manual teaches you to pass a test, not to build a schedule.
  • Software clicks, not concepts
    Knowing which menu to open doesn't mean you understand what P6 is computing.
  • No clear path to mastery
    Most schedulers piece it together on the job — which works, but takes years.
Chapter 4 — The Critical Path Method
The Tiebar way
  • Hands-on from lesson one
    Every concept comes with a live network. Change a duration, add a dependency — you see the effect immediately.
  • Understand the math, then the software
    You'll get better at P6 by knowing what it's computing, not by memorizing the interface.
  • A structured path to a credential
    Each unit builds on the last. No gaps, no guessing what to learn next.
Unit 2 · Fill in the blank
Activity B has ES = 3 and LS = 7. What is its total float?
4 days
Correct ✓
TF = LS − ES = 7 − 3 = 4. B can slip 4 days without delaying the project.

Who it's for

Students & new grads

Get ahead before your first project. Understand CPM before you have to explain it to a client — or a GC.

Unit 1 · Fill in the blank

Activity A has duration 5 and starts day 0. What is its Early Finish?

5
Correct ✓

Field engineers & supers

Making the move to scheduling? This is the missing piece. Real concepts, not just software-clicking.

Network · Critical path
A · 3d
B · 5d
C · 2d

Working schedulers

Fill the gaps. Finally understand why P6 does what it does when you add a lag. It follows the math.

Daily result
Tiebar Daily #7 · 1:47
🟩🟩🟩🟥🟩
Critical path found ⭐⭐⭐

Studying for a credential

Preparing for the PSP (AACE) or PMP/PMI-SP (PMI)? Tiebar covers the CPM fundamentals tested on scheduling credentials — no exam shortcuts, just solid understanding.

Exam Prep

Exam Prep mode raises the pass threshold and replays cards you struggled with — nothing slips through before exam day.

How Tiebar works

Step 1

Interactive lessons that build on each other

Every concept comes with a live network you can manipulate. Change a duration, add a dependency, find the critical path — you see the effect immediately. No passive reading.

Unit 2, Lesson 3 · Fill in the blank

Activity B has ES = 3 and LS = 7. What is its total float?

4 days
Correct ✓

TF = LS − ES. B can slip 4 days without delaying the project finish. Activities on the critical path have TF = 0.

Step 2

A daily challenge to keep your instincts sharp

One timed forward-pass puzzle every day — the same network for everyone, seeded from the date. Fill in Early Start and Early Finish, earn stars, share your result.

Today's result
Tiebar Daily #4 · 1:23
🟩🟩🟩🟩🟩
Critical path found ⭐⭐⭐
Step 3

A clear path, tracked as you advance

Your home screen shows a Gantt of your own learning path. Each lesson is a bar; the data date moves forward as you complete them. Complete units to climb the tier ladder.

Your learning path
Unit 1 · Foundations
Unit 2 · Network Logic
Unit 3 · Advanced
Field Engineer→ Master Scheduler

The curriculum

Units 1 and 2 are open now. More coming.

What is a schedule?
Activities and durations
Relationships 101
Building a network
Reading a Gantt chart
Unit 1 capstone
Drawing a network
Relationship types
Lags and leads
Forward & backward pass
Total vs. free float
Finding the critical path
Unit 2 capstone
Unit 1Unit 2
Unit 1Available

Foundations

  • ✓What is a schedule?
  • ✓Activities and durations
  • ✓Relationships 101
  • ✓Building a simple network
  • ✓Reading a Gantt chart
Unit 2Available

Network Logic

  • ✓Drawing a network diagram
  • ✓Relationship types
  • ✓Lags and leads
  • ✓Forward & backward pass
  • ✓Total vs. free float
  • ✓Finding the critical path
Unit 3

Advanced Scheduling

Coming soon

Unit 4

Resource Loading

Coming soon

Unit 5

Compression & Recovery

Coming soon

Tier ladder
Field EngineerProject Controls AnalystSchedulerSenior SchedulerMaster Scheduler
Coming soon

A credential worth earning.

We're building a verifiable Tiebar credential that proves you understand construction scheduling at the conceptual level — not just that you passed a software walkthrough. No specific date yet. Build the skills now.

Questions

Is it free?
Yes, during open beta. We haven't decided what paid tiers will look like yet, but early users will get a good deal.
Do I need P6, Asta, or any scheduling software?
No. Tiebar teaches the underlying concepts — CPM, float, critical path, relationship types. The software is just the tool; this is the understanding. You'll get better at P6 by knowing what it's computing.
Is this only for construction?
Tiebar is built around construction projects and uses real construction examples throughout. The CPM concepts apply anywhere, but the vocabulary and context are construction-first.
How long are the lessons?
Most lessons run 5–10 minutes. The daily challenge takes under 3 minutes. There's no time pressure in lessons — go at your own pace.

Ready to start?

The first lesson takes about 8 minutes. No account required.

Start learning