Vertical Design: Symmetrical Vertical Curve Formulas and Examples | NCEES Civil Exam [Section 5.3.1]

National Council of Examiners for Engineering and Surveying
Civil Engineering Principles and Practice of Engineering (PE) Exam
2021 v1.0 Reference Handbook
For more information about ITRE NC State Civil Engineering PE Exam Review Courses: itre.ncsu.edu/training/pe-fe/
#DanielFindley #TransportationEngineering #NCEESCivilEngineering

[@johncole5175]

Just what I needed. Broke down, rapid fire! Thanks so much.

[@FindleyDaniel]

Terrific, I'm glad it was helpful for you!

[@dharsahangunarathna4740]

Thanks for explaining it very well.

[@JonColoma]

Much appreciated! This cleared the topic up for me.

[@oleopathic]

very good lesson. thank you much!

[@eagle93616]

so for A ( algebraic difference in grades), and a (parabola constant), g1 and g2 are only numbers (no percent). For example, 4.2% upgrade, and -2.8% downgrade, when we using these grades to calculate A or a, they will be used as 4.2 and 2.8. However, when we are calculating PVC, we need to use4.2% and 2.8%?

[@FindleyDaniel]

As you know, the units are extremely important - it's possible to use feet & decimal percentage OR stations & percent grade. For instance, if you had a grade of +4% for 600 feet, these two alternatives would be:
Feet and Decimal Percentage: 0.04 * 600 = 24 feet of elevation change
OR
Stations and Percent Grade: 4 * 6 = 24 feet of elevation change
For simplicity and also for consistency with other vertical curve calculations, I recommend using stations and percent grade.

[@supermousa9350]

Great job! really informative session.

[@FindleyDaniel]

Thank you for the kind words! I have a set of playlists on related topics that might be helpful if you're looking for other similar videos: sites.google.com/ncsu.edu/daniel-findley/educational-resources

[@oleopathic]

ncees hb 1.1, page 278.