What’s on the Horizontal Curves poster
The rule, 3 worked examples, and the mistake everyone makes.
- On a bend, superelevation and side friction together supply the sideways force a vehi…
- Rmin = V²/(127(e + f)) · V in km/h
- V 100, e 0.06, f 0.12 = Rmin ≈ 437 m
- Halve the design speed = Radius falls 4 times
- Flat bend, e = 0 = Friction alone holds it
- Common mistake: Using maximum e with maximum f → Take both from the standard
Educational reference. Curve values are set by the road authority's geometric design standard, not by a bare formula.
Questions about the Horizontal Curves poster
- What’s on the Horizontal Curves poster?
- The rule, 3 worked examples, and the mistake everyone makes. On a bend, superelevation and side friction together supply the sideways force a vehi…; Rmin = V²/(127(e + f)) · V in km/h; V 100, e 0.06, f 0.12 = Rmin ≈ 437 m; Halve the design speed = Radius falls 4 times; Flat bend, e = 0 = Friction alone holds it; Common mistake: Using maximum e with maximum f → Take both from the standard. Educational reference. Curve values are set by the road authority's geometric design standard, not by a bare formula.
- Who is the Horizontal Curves poster for?
- Horizontal Curves belongs to the Civil Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning transportation can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Horizontal Curves poster?
- Setting the tightest bend a design speed will tolerate. A wall chart earns its place by being glanceable from where the work is happening, so Horizontal Curves belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Horizontal Curves?
- CBR & Subgrade, Road Cross Section and Mass Haul sit alongside Horizontal Curves 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.CBR & SubgradeRoad Cross SectionMass Haul
- Is the Horizontal Curves poster free to download and print?
- Yes. Horizontal Curves 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 Horizontal Curves poster print at?
- Horizontal Curves 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 Horizontal Curves loses nothing.Printing guide
Related posters
Charts that sit alongside Horizontal Curves on the same wall.
Browse every Civil Engineering poster, or start from the full catalogue.