Standard Practice for Installation of Geocomposite Pavement Drains

Importancia y uso:

5.1 This practice is intended to provide installation guidance for designers, specifiers, installation contractors, regulatory agencies, owners, and inspectors who are involved in the planning and installation of geocomposite pavement edgedrains and underdrains. As with any standard practice, modification may be required for specific project conditions or for special local or regional conditions. Fig. 1 shows the proper horizontal alignment of the drain based on various trench conditions outlined in 9.2, and the vertical depth of placement of the drain needed for a geocomposite edge drain to function most effectively as both a collector and conduit.

FIG. 1 Typical Type and Arrangement of Drain

5.2 Fig. 2 shows the typical type and arrangement of equipment used to install geocomposite highway edgedrains. The combination of these recommended installation conditions, techniques, and equipment are critical to the satisfactory long-term performance of these products.

FIG. 2 Proper Horizontal Alignment

Note 1: Drain positioning gate should be located and adjusted to position, and hold the geocomposite drain against the trench wall, to prevent possible “J”-ing or “C”-ing of the drain during backfilling and compaction.

Subcomité:

D35.03

Referida por:

D7001-20

Volúmen:

04.13

Número ICS:

93.080.20 (Road construction materials)

Palabras clave:

backfill; “C”-ing; collector; conduit; drain positioning gate; edgedrain; geocomposites; geosynthetic; installation/placement boot; “J”-ing; joints; outlet pipe; outlet tees; trench; underdrain; wheel trencher;