What’s on the Float & Slack poster
The rule, 3 worked examples, and the mistake everyone makes.
- Float is the slack an activity has before it begins to move something else.
- Total float = LS − ES = LF − EF
- Total float = Delay before the end slips
- Free float = Delay before successors slip
- Zero total float = The activity is critical
- Common mistake: Treating float as spare time to spend → Float belongs to the whole path
Educational reference. Who owns float is a contractual question, and different contracts answer it differently.
Questions about the Float & Slack poster
- What’s on the Float & Slack poster?
- The rule, 3 worked examples, and the mistake everyone makes. Float is the slack an activity has before it begins to move something else.; Total float = LS − ES = LF − EF; Total float = Delay before the end slips; Free float = Delay before successors slip; Zero total float = The activity is critical; Common mistake: Treating float as spare time to spend → Float belongs to the whole path. Educational reference. Who owns float is a contractual question, and different contracts answer it differently.
- Who is the Float & Slack poster for?
- Float & Slack belongs to the Civil Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning construction management can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Float & Slack poster?
- Deciding whether a delay to one activity actually matters. A wall chart earns its place by being glanceable from where the work is happening, so Float & Slack belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Float & Slack?
- Cost Estimating, Critical Path Method and Earned Value sit alongside Float & Slack in the Civil Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Cost EstimatingCritical Path MethodEarned Value
- Is the Float & Slack poster free to download and print?
- Yes. Float & Slack downloads as a free PDF with no account, no email and no watermark, like everything else in the Civil Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Float & Slack poster print at?
- Float & Slack is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Float & Slack loses nothing.Printing guide
Related posters
Charts that sit alongside Float & Slack on the same wall.
Browse every Civil Engineering poster, or start from the full catalogue.