Trench Grate & Frame
Class F & G : 900 kN test load 
Safe Working Loads:
- Airport
Taxiways.
- Airport aprons,
terminal areas.
| Havestock Class F & G Trench Grate & Frame |
| Code |
Width mm |
Length mm |
Weight kg |
| LG30G |
300 |
610 |
85 |
|
TG30GC (CELLULAR FRAME) |
300 |
610 |
62 |
Only available as :
Cellular Frame with Transverse Bar
Overall Frame Size
| Frame Depth |
120mm |
| Overall Frame
Width |
Clear opening
width + 160mm |
| Overall Frame
Length |
Clear opening
length |
Overall Grate Size
| Grate Depth |
60mm |
| Overall Grate
Width |
Clear opening
width + 70mm |
| Overall Grate
Length |
Clear opening
length |
Installation
Class F & G grates and frames; the product must not be rebated
into position. The product must be cast into the base concrete.
- Care must
be taken to ensure that concrete is vibrated, particularly under the frame and that
concrete both under the frame and inside the cellular frame structure reaches the same Mpa
as the base concrete.
- Clear
opening of the pit must not be larger than the frame opening.
- The
product must be built into the base concrete and the base concrete must include sufficient
reinforcing under and around the frame and in some cases reinforcing must be attached to
the frame (ie cases of high back pressure head).
- As the
manufacturer of the cast iron product, we advise that whilst our product is tested to
AS3996 in terms of design load, the frames are designed to be fully encased in concrete of
sufficient Mpa to hold the loads indicated.
- Havestock
Pty Ltd takes no responsibility for the integrity of the product in service where it has
not been installed as described in this document. Inadequate installation voids the
product warranty.