<p><p><strong>References:<br></strong><em>Schaefer et al. (2016)<br>Elias et al. (2006)<br>Hussin (1994)<br>Schaefer et al. (1997)<br>Serridge and Synac (2007)</em></p><p><strong>Method Summary</strong></p><p>The installation of each VCC should be monitored during the construction process to ensure that the columns are installed with proper geometry. The column location or identification number, start time, finish time, depth, vibrator amperage, pumping pressure, concrete volume pumped, and remarks of any observations are recorded (Elias et al. 2006). The concrete pumping rate should be maintained to a rate equal to or greater than the rate at which the void is created by the extraction of the vibrator (Schaefer et al. 1997). The pumping pressure should be monitored to ensure that positive pumping pressure is maintained throughout the extraction of the vibrator. This will help prevent the possibility of necking occurring in the shaft of the column. This monitoring can be done manually or it is commonly done using an in-cab display to monitor the construction sequence.</p><p><strong>Accuracy and Precision</strong></p><p>If each VCC is monitored in detail, the geometry of each column should be reliable.</p><p><strong>Adequacy of Coverage</strong></p><p>Each column is monitored individually so this method provides adequate coverage.</p><p><strong>Implementation Requirements </strong></p><p>It is a standard practice for most construction projects to have full time monitoring of the construction procedures. The in-cab displays are fairly common.</p><p><strong>General Comments</strong></p><p>Monitoring is very important for assuring that columns are appropriately constructed and for verifying column geometry.</p></p>