This report provides a simplified method to be used for evaluating the skin friction and tip resistance of axially loaded drilled shafts. A summary of literature and current practice was completed and then a comprehensive set of field and laboratory tests was performed. Several soil samples were collected from different sites from Arizona and surrounding states. Large scale direct shear apparatus was developed and used to determine the friction between soil and concrete. Finite element analyses were conducted on several prototype cases to determine effect of soil parameters such as dilation on the skin friction values. A step-by-step simplified approach was introduced to determine the skin and tip resistance of drilled shaft foundations in gravelly soils. An example application was presented to guide users in utilizing the simplified approach.

This document is intended to help schools identify the strengths and limitations of their instructional practices and organizational conditions. All Arizona schools will use this document to assess their overall performance. The document serves three primary functions: 1) as a blueprint to communicate the high expectations of the Arizona Superintendent of Public Instruction for all Arizona schools; 2) as a self-assessment tool to be used by the educational community at the local level; and 3) as an external assessment tool to be used by ADE School Improvement Teams. This document may also be used in other appropriate external assessment activities. The document is not to be used for staff evaluation. Instead, the focus is placed on assessing the effectiveness of the school for the purpose of sustained improvement.

This instrument is intended to help schools at all levels of performance assess the strengths and limitations of their instructional practices and organizational conditions. It serves three primary functions:
1. as a blueprint to communicate the high expectations of the Superintendent of Public Instruction for all Arizona schools;
2. as an internal self-assessment tool to be used by the educational community at the local level; and
3. as an external assessment tool to be used by ADE Solutions Teams.