Project Information

The following is the project loaction in Flagstaff.

The following is the parcel and retaining wall location on the parcel.

The project is located on the corner of Route 66 and Fourth Street. The retaining wall is being constructed to optimize land use for the construction of a Holiday Inn.The purpose of this project is to create a retaining wall which will allow the land owner, Holiday Inn, to maximize the use of their land. This retaining wall will serve to stabilize the slope that separates the grades of the Trax land and the railroad. The parcel is currently vacant and contains excess soil fill from the 2006 relocation of the railroad tracks.

Client: Stephen Irwin

TA: Thomas Nelson

Close Project

Project Documentation

The documents below are the Proposal Tracks Team and the Final Product of the Project.

• Proposal Document
• Proposal Presentation

Close Project

Wall Designs and Final Report

The team completed three preliminary wall designs and presented to the client, Stephen Irwin. The wall designs were choosen based on two decision matrices, one that narrowed the seven total walls to three and then with the decision of the client to the final wall design. Listed below is the matrices, preliminary wall designs, and the final chosen wall design.

Seven Wall Decision Matrix
Preliminary Wall Decision Matrix

The team took the determinations of the final three wall designs and created three preliminary cross sections and designs. The team used the alignment of the wall to then create plan and profiles of each wall, steping the wall when needed.

Retaining Wall Alignment
Wall 1 (Cantilever)- Cross Section
Wall 2 (MSE)- Cross Section
Wall 3 (CMU)- Cross Section
The team created a plan set of all wall designs and the final design, the concrete masonry unit retaining wall. The team provided details for the handrail proposed on top of the wall and the weepholes used for drainage. The final design shows an alignment, profile and cross section of the wall.
Final Design Construction Plan

Close Project

Team Photo Gallery

The below items make up images of the teams testing and the soil sampling.

Sampling Plan and Soil Sampling Location

Sieve Analysis Testing Photos (Soil Distribution)

Atterburg Limits Testing Photos

Modified Proctor Testing Photos

Consolidation Testing Photos

Hydrometer Testing Photos

Triaxial Testing Photos

Direct Shear Testing Photos

Close Project