Trench Cover
Side Trench
A drainage that is constructed generally on the road-side, and the relation between auto-car and the grating : Car passes through load bar at right angle (in parallel with cross bar).
Transverse Trench
A drainage that is constructed generally across the road is call transverse trench and the relation between auto-car and the grating : Car passes through in parallel with the bearing bar.
U-TRENCH
This is simply used as a trench cover by placing it on the U-type concrete trench.
Recommend for walk way only.
