<p><p><figure id='attachment_8065' style='max-width:743px' class='caption aligncenter'><img class=" wp-image-8065" src="https://www.geoinstitute.org/sites/default/files/geotech-tools-uploads/…; alt="Schematic section view of a pavement edge drain made using a prefabricated geocomposite edge drain." width="743" height="573" /><figcaption class='caption-text'> Prefabricated geoco

<p><p><strong>Current FHWA Reference(s):<br></strong><em>Christopher et al. (2006) and Holtz et al. (2008)</em><strong>Supporting Reference(s):<br></strong><em>AASHTO (1993, 2006)<br>Christopher and Zhao (2001)<br>Mallela et al. (2002)</em></p><p>Christopher et al. (2006) considers the hydraulic requirements for the permeable layer to achieve the required time-to-drain for the design of pavement drainage.

<p><p><strong>References:<br></strong><em>Christopher et al. (2010)<br>Elfino et al. (2000)<br>Koerner et al. (1996)</em></p><p><strong>Method Summary</strong></p><p>The verticality of the drain panel (e.eg. geocomposite) in the trench during the backfill operations can be maintained by utilizing a drain panel-positioning wheel or plate.