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Shoring Equipment
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Groundforce Shorcos equipment portfolio includes a full range of Trenching Equipment and Shoring Equipment including: Trench Boxes, Trench Sheets and Piles, light and heavy duty hydraulic bracing, hydraulic struts and other related products.
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Supplying Piling equipment nationwide, we strive ourselves on customer service and product quality. Our ranges include EMVs, Larssen Sheet Piles and more
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GF Double Acting Manhole Brace

The GF Double Acting Manhole Brace range consists of a series of hydraulically adjustable legs which, when assembled together, form a 4-sided telescopic hydraulic bracing frame which is used in conjunction with trench sheeting to support square or rectangular excavations from 2.0m up to 6.0m long.

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.

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Leg Ref.	External Working Range (m)		Leg Weight (kg)
	Min	Max
A	2.0	3.0	216
B	3.0	4.0	268
C	4.0	5.0	322
D	5.0	6.0	374

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.

FAQs

What is the Groundforce Double Acting Manhole Brace?

The Groundforce Double Acting Manhole Brace is a mid-range, hydraulically adjustable bracing system.

Why Choose a Groundforce Double Acting Manhole Brace?

The Double Acting Manhole Brace is often chosen due to its modular design which offers speed and simplicity of installation.

What size excavations are suitable for the Double Acting Manhole Brace?

The DA manhole Brace is suitable for supporting clear span square or rectangular excavations ranging from 2m to 6m.

How are the hydraulically adjustable legs connected?

The legs are connected using a single corner pin.

How is the hydraulic connection made from the Shoring Pump to the legs / braces?

Two hydraulic hoses are connected from the pump to the hydraulic ram on the brace / leg (one to expand, one to retract). The connection is made using quick release hose connections.

How are the legs expanded or retracted?

The legs can to be both expanded and retracted hydraulically using either a Motorised Shoring pump or Manual Hand Pump.

Can the DA manhole Brace be locked in position once expanded?

Yes, the 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.

What size excavations can DA Manhole Braces be used in?

These Manhole Braces can be used in conjunction with trench sheeting to support square or rectangular excavations from 2.0m up to 6.0m long.

Can more than one DA Manhole Brace be used in an excavation?

Depending on the depth of the excavation, multiple, pre-assembled frames can be added by lowering them through previously installed frames (in accordance with the design).

What other safety features are built into the design?

Restraining Chains are used to link the legs together to safeguard against depressurisation and subsequent movement of the frame(s).

Is there a video available that demonstrates DA Manhole Braces?

Yes, a video showing Double Acting Manhole Brace installation methodology is available to watch now on our YouTube channel.

Should any other safety equipment be used following completion of temporary works?

EdgeSafe and ladder access should be installed as soon as possible to provide a safe working environment in and around the trench.

Do Groundforce offer training courses?

Groundforce Training Services offer industry leading accredited safety training primarily for those working in utilities, construction and civil engineering. From short duration health and safety awareness to more complex or specialist safety consultancy solutions.

Is a user guide available for the Instagrid GO?

Yes, a user guide will be provided with every hire and can be requested from Groundforce or can be downloaded from the Groundforce Shorco section of the Groundforce website. A user guide for the Instagrid GO Mobile Power Supply is also available below to download as a PDF.

Related Files

(1.17 MB)

GF Double Acting Manhole Brace Technical Literature

(1.79 MB)

Groundforce Double Acting Manhole Brace

Related Products

Mechshore Double Acting Series

The Mechshore Double Acting Manhole Brace range consists of a series of non-modular hydraulically adjustable legs which are connected together to form a mid-range load capacity bracing system to support square or rectangular excavation sizes from 1.5m to 8.3m.

Larssen Sheet Piles

Larssen Piles are a type of sheet piling that has an interlocking section which forms a sheet piling retaining wall. Each sheet pile section is connected at 180 degrees from the previous one to form a uniform wall with alternating troughs and peaks. Larssen Sheet Piles are typically used in temporary or permanent cofferdams, retaining walls and foundation construction.

Trench Sheet (Standard)

Groundforce Shorco offer a comprehensive range of cold formed lapped trench sheets and interlocking light pile sections to provide a cost effective solution for most excavation support applications. Many of the sections are produced from high yield steel which provides an exceptional strength-to-weight ratio resulting excellent durability whilst driving and resistance to on-site damage.

Maxi Brace

The Maxi Brace is a mid-range, heavy duty, hydraulically adjustable bracing system suitable for supporting clear span square or rectangular excavations ranging from 3m to 12m in size. Higher load capacity and/or longer spans can be achieved by incorporating either cross strutting or knee bracing. Modular extensions are available to further extend beam lengths, however cross strutting is required with these leg configurations.