<p><p><h2>Commentary</h2>To date, the incorporation of fibers into subgrade and/or subbase materials has been limited to laboratory and small trial projects. Primary cost considerations for this technology should include:<br><ul> <li>Fiber type</li> <li>Volume/dosage of fibers required to strengthen the soil</li> <li>Cost of fiber materials</li> <li>Construction methods and equipment requirements</li></ul><h2>Historical Cost Information</h2>Research efforts did not yield any fiber reinforcement of subgrade/subbase bid tabulation data from state highway agencies.<br><h2>Conceptual Cost Estimating Tool</h2>No cost estimating tool is provided for this technology.</p></p>