U-Drain

Design Specifications
EC U-Drain is designed according to BS 8110 : Part 1 : 1985 with the following design criterias:

Uniform live load of 10KN/m2 Concrete grade = 30N/mm2 Minimum reinforcement cover = 25mm ~ 35mm

Angle of internal friction of earth = 30° Bulk density of compacted earth backfill = 19KN/m3 Granular backfill (see Figure 1) is recommended for drainage layer behind wall

Installation of the U-Drain

The U-Drain/ Box Culvert should be laid on compacted sand bedding to the required level. Area where soil condition is bad, excavate deeper and replace with suitable material beneath the sand bedding, according to the engineer's design requirements for the foundation. Gap at joining area should be filled with cement mortar. Back of weepholes should be filled with suitable filter material.

Handling of the U-Drain

Weepholes are to be utilized as lifting holes for handling and installing the U-Drain/ Box Culvert. A Lifting Beam is to be used for lifting the U-Drain/ Box Culvert to prevent excessive stress to the legs. (see Figure 2) All U-Drains/ Box Culverts are to be placed or stacked on level and firm ground at all times on site.