ADOT SF-1 (Spread Footing – Bearing Resistance and Settlement)

Document Info

Title: ADOT SF-1 (Spread Footing – Bearing Resistance and Settlement)

Authored By: NCS GeoResources, LLC

Sponsoring Agency: Arizona Department of Transportation (ADOT)



Memorandum SF-1 presents guidance for the bearing and settlement analysis of spread footings. The intent of this policy is to present a general overview of the development of the information needed by the bridge designer to design substructure elements consisting of spread footings. The concept of bearing resistance chart is introduced which permits a combined evaluation of strength and service limit states. The concept is illustrated by an example subsurface profile and a step-by-step solution. Evaluation of the computed settlements in terms of effect of deformations on a bridge structure and staged construciton analysis is also presented.


The information presented in the blogs, downloads, or other locations of our website is for educational purposes only and is not intended to render engineering or other professional services.

Use of this information in whole or in part for design, construction or any other application is at the sole risk of the user. If such engineering or professional services are required, the assistance of an appropriate professional should be sought.

NCS GeoResources, LLC and/or NCS Consultants, LLC, shall not be responsible or liable in any way for any errors, omissions, or damages arising out of the use of the information provided or gathered in our website.