GF Double Acting Manhole Brace
Individual legs are assembled to produce is a 4-sided telescopic hydraulic bracing frame which is used in conjunction with trench sheeting to support square or rectangular excavations from 1.5m up to 8.3m long. Legs are constructed from high yield steel sections and incorporate a double acting hydraulic ram. This means the legs can be both expanded and retracted hydraulically which aids the installation and removal process. In addition, some legs have a pinned rough adjustment which increases the operating range of the legs.
- Single 50mm diameter corner pin connection for rapid assembly on site.
- Ideal for light to medium duty load applications in 4-sided excavations.
- The legs can to be both expanded and retracted hydraulically by a hand pump to aid installation and removal.
- Double acting legs incorporate a lock-off valve for greater security and allow the pump hoses to be easily released and reconnected without fluid loss.
Specification
| Leg ref. |
External Working Range (m) |
Leg Weight (kg) |
Beam Width (mm) |
Internal Range (m)
|
| Min |
Max |
|
A
|
2.0 - 3.0
|
260
|
180
|
1.64 |
2.64 |
|
B
|
3.0 - 4.0
|
305
|
180
|
2.64 |
3.64 |
|
C
|
4.0 - 5.0
|
390
|
180
|
3.64 |
4.64 |
|
D
|
5.0 - 6.0
|
445
|
180
|
4.64 |
5.64 |
These ranges do not take into account the potential deflection of the waling beam, which will be dependent upon applied load and upon span. As such, the actual clear opening achieved is likely to be smaller than the internal range values quoted below. These figures should be used as a rough guide only and should not be relied upon to provide an accurate assessment of clear opening