<p><p><strong>References:<br></strong><em>Collin and Cowell (1998)<br>Rogbeck et al. (2003)<br>Porterfield, Cotton, and Byrne (1994)<br>Lazarte et al. (2015)<br>Byrne et al. (1998)</em></p><p><strong>Method Summary</strong></p><p>Visual inspection, similar to surveying, can be used to record any wall movements during and after construction of a soil nail wall in addition to any other visible problems which may exist (such as cracking, settlement of adjacent structures, cracks in the shotcrete, heaving, and seepage). Collin and Cowell (1998) describes briefly a “walking inspection” which should be conducted by the foreman and the Engineer to observe any deflections in the wall during construction by noticing cracks, seepage, displacements, heaving, etc.</p><p><strong>Accuracy and Precision</strong></p><p>The quality of visual inspections are dependent on the experience of the inspector.</p><p><strong>Adequacy of Coverage</strong></p><p>An inspector is able to visually inspect a large area relatively easily.</p><p><strong>Implementation Requirements </strong></p><p>Some soil nail wall field experience is necessary to identify problems as they arise.</p><p><strong>General Comments</strong></p><p>Visual inspection does not provide quantifiable results. However, it can identify major concerns of the project based on visible problems such as cracking, seepage, and deformations. Visual inspection can be used for both method and performance approach specifications.</p></p>