Matched to Real Operating Conditions
Trench Covers & Drainage
A trench cover must do two jobs at once: pass stormwater fast and carry whatever crosses it — pedestrians, forklifts or trucks. Grating covers keep high open area for flow, with bearing bars sized to the clear span and the traffic, plus frames, hinges and locks to suit the site.
The Challenge
What This Application Demands
Solid covers choke flow during storms and cause ponding
Under-rated covers deform or crack under wheel loads
Debris and sediment mean channels need regular cleaning access
Loose covers rock, rattle and walk out of position under traffic
Requirements
Specification Requirements
Confirm these points before ordering — they define the grating.
Load & traffic
- Define crossing traffic: pedestrian, forklift, truck or mixed
- Wheel loads and tire contact areas matter more than gross vehicle weight
- Clear trench span sets bearing bar size — measure inside support to inside support
- Capacity confirmed against span, load type and support conditions before quotation
Drainage
- Open grid keeps flow area high and sheds debris instead of trapping it
- Bearing bar spacing sets the opening size — closer spacing where small objects or heels are a concern
- Curved and angled runs detailed to layout drawings
Access & security
- Hinged, openable sections for channel cleaning and inspection
- Locks or bolt-down fixing where covers could be lifted
- Lifting lugs for heavy sections
Durability
- Hot-dip galvanized for yard and road drainage
- Stainless 316L for corrosive effluent, food plants or coastal sites
- Full banding on all edges; load banding where traffic runs along the trench
Gratings
Recommended Grating Families
Trench Cover Grating
Drainage trench covers from pedestrian walkways to heavy vehicle crossings, framed and hinged options available.
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Heavy Duty Steel Grating
Heavy bearing bars for forklift, truck and equipment loads — engineered against span and support conditions.
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Galvanized Steel Grating
Hot-dip galvanized after fabrication for long-term corrosion protection on outdoor platforms, walkways and trench covers.
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Stainless Steel Grating
SS304/316L grating for chemical, food-grade, coastal and hygienic environments — passivated or electro-polished.
View productMaterial & finish selection
- Yard and road drainage: galvanized carbon steel — the economical default.
- Truck crossings and loading areas: heavy-duty welded grating, in Q355 high-strength steel where spans demand it.
- Chemical effluent, food plants, coastal sites: SS316L, pickled and passivated.
- All covers fully banded; load-band the edges where traffic runs parallel to the trench.
Inquiry
What to Send Us
These parameters let us confirm the specification and quote within 24 hours.
- Clear trench span — inside support to inside support
- Traffic type and wheel loads: pedestrian, forklift or truck
- Cover length, width and quantity per size
- Frame requirement: new frames with anchors, or covers sized to existing frames
- Hinged, lockable or bolt-down requirements
- Environment: stormwater, chemical effluent, coastal air
- Layout drawing for multi-run or curved channels
Installation
Installation Notes
- Covers are fully banded and tagged to the layout drawing — install in the numbered sequence.
- Angle or channel frames with anchors can be supplied, or covers sized to your existing frames.
- Hinged sections open for cleaning; lockable versions deter lifting in public areas.
- Bearing bars must run across the clear span — never parallel to the trench.
Gallery
On Site
FAQ
Trench Covers & Drainage FAQs
What span can a trench cover handle?
Do covers come with frames?
Can sections be hinged or lockable?
How do I specify a cover for truck traffic?
Which way must the bars run across a trench?
Galvanized or stainless for drainage duty?
Send Your Drawings, Get a Confirmed Specification
Complete inquiries are typically answered within 24 hours during business hours.