# Example North Abutment, 30 ft · H-pile

Example North Abutment, 30 ft of Federal Highway Administration (2016) solved in Rischio and compared with the source's answers.

SourceManual

Hannigan, Rausche, Likins, Robinson & Becker (2016). Design and Construction of Driven Pile Foundations: Comprehensive Design Example (FHWA-NHI-16-064). Federal Highway Administration. Example North Abutment, 30 ft, p. 28.

ID `fhwa-nhi-16-064-north-abutment-30ft`

[Open in the studio](https://studio.rischio.io/examples/fhwa-nhi-16-064-north-abutment-30ft?utm_source=rischio.io&utm_medium=website&utm_content=docs-example) A copy, in your account [Open the PDF](https://www.fhwa.dot.gov/engineering/geotech/pubs/gec12/nhi16009_v3.pdf)

Rischio isn't affiliated with the source's authors or publishers. If you hold its rights and want this example removed, write to [hello@rischio.io](mailto:hello@rischio.io).

The model as the editor draws it, with what governs its result.

## Source vs Rischio

|  | Source | Rischio | Difference |
| --- | --- | --- | --- |
| Shaft resistance, Rs | 471.1 kN | 476.9 kN | +1.2 % |
| Toe resistance, Rp | 609.0 kN | 599.2 kN | −1.6 % |
| Nominal resistance, Rn | 1 079.6 kN | 1 076.2 kN | −0.3 % |

The manual's values come from the DrivenPiles program. Rischio reads Nordlund's coefficients off AASHTO's charts, so its shaft and toe resistances can differ from them by up to 2 %.

## How it's calculated

-   [Method and assumptions → What the engine does, and what it assumes.](https://rischio.io/docs/deep-foundation/theory/)
-   [Equations → Every step of the calculation, in order.](https://rischio.io/docs/deep-foundation/equations/)
-   [Inputs → Every field of the model, with its units.](https://rischio.io/docs/deep-foundation/inputs/)

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Source: https://rischio.io/docs/examples/fhwa-nhi-16-064-north-abutment-30ft/