Compared to open cut direct bury, trench installation of microduct has several outstanding benefits. Any civil works cost much and consume long hours to accomplish. However this method cut narrow width on surface and following reinstatement could be carried out in short time. Working speed is faster and waste generation is decreased.
Applying proper reinforcement like concrete encasement onto buried cable, enough strength and reliability of network can be secured. The depth varies upon each country's regulation or law. Normally around 300 to 400mm depth is allowed and sometimes more shallow installation may be accepted. Cutting hard surfaces like reinforced concrete, the depth should be adjusted for cost and time saving. The trench width is mainly determined by the size of microduct. It covers from 10mm to 150mm in general. When the width is less than 30mm they call it as micro-trench, otherwise it is considered as mini-trench. Both methods can be equally applied on asphalt or concrete surface. With those benefits mentioned above, more operators, cities and countries are switching from open-cut to trenching for microduct installation. Especially in crowed city with heavy traffic or where has congested underground with existing cables, the trenching technology emerges as a unique solution for expanding telecommunication infrastructure.
70-300 mm depth/10-30 mm width
2.8 -12 inch depth/0.4-1.2 inch width
FLAT & LINK DUCT FOR MICRO-TRENCHING
150-400 mm depth/70-150 mm width
6.0 -15.7inch depth/2.8-5.9 inch width
THICK WALLED DUCT FOR MINI-TRENCHING