GRID COVERS FOR STORM WATER CHANNELS

GRID COVERS FOR STORM WATER CHANNELS

Precast concrete open-ended water channel sections:

  • * All visible surfaces smooth.
  • * Approved by all local authorities and government departments.

Robust Grid Cover

The Ultimate Grid Cover for water taking channels under traffic.
Tough and durable, no chipping or cracking, no exposed reinforcing rusting away
Minimal visible steel and heavy. Does not get stolen.
Suitable for use under maneuvering truck wheels. No scuffing.

Designed to Customer's requirement:

  • Span length,
  • Width along trench and
  • Expected maximum loading.
 

Median Grid for U- Channel

SANRAL specification reinforced concrete Grid. Two per channel
Concrete Strength 40MPa (ave 28d), Reinforcing: hot dipped galvanized
Size: 370mm wide x 85mm deep x 600mm (module) long
Mass: 35kg each
Test load (ultimate) across two ribs 60kN
Prod. no.: P4-8002

Applications: This grid is used by roads authorities in the median (island) between carriageways and also directly adjacent to vertical retaining walls and New Jersey Barriers where big wheels cannot really reach. It is meant only for very occasional or accidental wheel encrouchment.

Contra-indications (Do not use): For the purpose of a vehicle crossing; heavy vehicles; regular vehicles crossing over; vehicles moving other than dead slowly. The peculiar angled shape of the Median Grid with sharp corners and points makes it particularly susceptible to local cracking and chipping.

 

Square Grid for U- Channel

High specification reinforced concrete Grid. Two per channel
Concrete Strength 40MPa (ave 28d), Reinforcing: hot dipped galvanized
Size: 370mm wide x 135mm deep x 600mm (module) long
Mass: 55kg each
Test load (ultimate) across two ribs 150kN
Prod. no.: P4-8003

Applications: For limited vehicle crossing i.e. occasional traffic moving very slowly. If used as such the grid must be firmly bedded on the channel with strong cement mortar. Rocking movememnt must not be possible. It can carry a lot more than the Median Grid and has a much improved shape.

Contra-indications (Do not use): For heavy vehicles other than rarely and at crawl-speed; high frequency traffic; vehicles moving other than very slowly. Heavy vehicles manoeuvring with the possibility of wheel scuffing.

 

U- Channel

SANRAL specification reinforced concrete U-Channel.
Concrete Strength 40MPa (ave 28d)
Size: 370mm wide x 405mm deep x 1200mm long
Mass: 210kg per 1.2m length
Prod. no.: P4-8000

Theoretical Flow Data

 

Services Channel and Lid

Channel for underground services like cables, optic fibre, pipes, communication, gas and more.
Concrete Strength 30MPa, reinforced.
Load capacity: Single wheel load of 2 tons (static)

Channel:
External size: 700mm wide x 475mm high x 500mm long (need 2 per metre).
Internal size: 500mm wide x 400mm deep x 500mm long.
Mass: 146kg each.
Prod. no.: P4-7060/Ch

Lids:
Provided with lifting hole. Open with standard garden pick.
Size: 700mm x 250mm x 100mm thick.

To cover channel 700mm wide.
Length along channel: 250mm (need 4 per metre).
Mass: 42kg each.
Prod. no.: P4-7060/1

 


Click for dimensions and more pictures

Vosloo Light Grid Cover

Size: 900mm x 500mm x 80mm thick
Concrete: 30MPa
Reinforced
Mass: 42kg
Smooth concrete finish on top.

Suitable for Pedestrian and occasional LIGHT vehicles only.

Prod. no.: P4-7029

 

 

See also Down Channels >

 

 

See also Channel and Trench Covers