Trench drain systems for loading docks vary based upon the expected water flow. Although drains for loading docks do not have a standard trench width, size is dependent on the water capacity the system can support. Consider installing a 4″ pre-sloped polymer concrete trench drain in truck ramps with limited runoff water.
In areas where there are larger trucks and more surface area, water flow requires a reinforced drain that is at least 8″ wide. Install a HS20 or HS25 load rated trench drain system with Class D or Class E trench grates in loading docks with significant tractor trailer and heavy equipment traffic.
Trench forming systems and cast-in-place trench drains are more common in loading docks with higher flow rates due to material costs and flow requirements.