Support to the civils and industrial sectors with innovative access at the core of our services
Rigmar provides a broad range of integrated services to both the civils and industrial sectors, with the provision of innovative access at the core of our expertise.
The cost and quality of access is rapidly becoming a key differentiator between successful onward tenders and Rigmar provides collaborative support to our clients’ bids, including feasibility studies, design concepts and accurate pricing models.
Our combination of highly skilled, multi-disciplined technicians, complimented by a range of innovative access solutions and supported by a competent and highly experienced management team, allows Rigmar to deliver cost effective, ‘best-fit’ solutions on a comprehensive range of asset types, including:
- Power Stations
- Port Facilities
- Industrial Roof Space
- Events and Staging
- Piers and Jetties
- Building Maintenance
Your current challenge is our next success story.
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Rigmar offers an extensive range of rigging services from basic, localised lifts for glass installation and cladding, to heavy contract lifts for major construction and maintenance projects, all furnished with full documentation packages including lift plans and RAMS.
Our team of experts will study your requirements, suggest feasible concepts and when an appropriate course of action has been agreed, commence the process of survey, review, design, procurement, fabrication, planning and eventual execution.
Rigmar’s rigging team preparing the load for lifting from a barge on the Firth of Forth.
Rigmar’s rope access rigger abseils down to make Tirak winch connections with the MOOG gantry on the barge deck.
Rigmar’s rope access riggers install 3.2t Tirak winches and prepare to raise the load up to the bridge under deck.
Rigmar’s team raise the 12t load via lifting frames attached to Tirak winches, which are double-sheaved to raise their capacity.
This entire process was undertaken by Rigmar using in-house developed lift plans, approved by the permanent works engineer on site.
A total of 6 MOOG gantries were installed at various locations about the structure.
Once raised and attached to the bridge permanent gantry rails, additional rigging was installed to comply with the man-riding element of BS EN 1808:2015, allowing access to non-rope access, OEM engineers to conduct the final commissioning.
Rigmar has extensive experience in the design and installation of suspended access platforms and offers a range of options depending on our clients’ requirements.
Our in-house systems include Spaceframe, which Rigmar deploys for applications where elevation is a requirement, such as lifting loads, and QuikDeck, our ‘go-to’ solution for underdeck areas and complex structurers with numerous features to negotiate.
Rigmar first introduced QuikDeck to the EU/UK market back in 2012 and has since developed numerous applications as well as integration with other systems to deliver a broad project portfolio of ‘collective access’ solutions.
This QuikDeck platform was designed and engineered to Highways standards, supported by an Approval in Principle (AIP), CAT III certificate and ‘Type P’ temporary works certificate.
The mid-span element has an unsuspended cantilever for access and egress via a drop-down, system-scaffold stair tower. Material supply was facilitated using a mobile crane located on the car deck.
The elements surrounding the piers have been rigged on mechanical lifting devices and can be lowered at low tide to access the columns and conduct concrete repairs and install cathodic protection below the high tide water line.
Working to a strict lift plan developed by the Rigmar team, the platforms were lowered daily to provide access to the bridge columns at the required elevations.
In order to stay within the load limits of the bridge beams during high-tide, storm conditions, the deck was constructed using GRP, allowing wave crests to penetrate the surface, thereby reducing drag.
Both the QuikDeck structure and GRP decking were designed and installed to fit closely (50mm) around the structure detail, providing a supported edge throughout and ensuring that the design load was maintained at all locations.
The layout of the QuikDeck suspension points and inherent rigidity allows for fewer connection points than with scaffold, which is essential on structures where remedial works are required to leave no trace of the project on completion.
Rigmar has completed QuikDeck installations on various offshore-helidecks, reducing installation time by 50% over tube and fitting scaffold, despite the complex structure and multiple intersections though the deck. The system weight is significantly less too, allowing heli-deck operations to continue.
At Rigmar we firmly believe that the ‘quality of access’ on any access project is key to safe and efficient operations and that an amalgamation of access techniques should be considered in order to deliver the optimum solution for our clients. Despite rope access and suspended access platforms being a core competence at Rigmar, integration with tube and fit and system scaffold provides the versatility to adapt to the characteristics of a structure.
For this bridge, the client required a 100% drops-free install and 100% drops free access once installed. The QuikDeck cantilever allowed scaffold to be built up the elevation face and over the parapet wall, facilitating full encapsulation throughout.
In order to allow safe and effective access and egress to the QuikDeck platform, HAKI system stair towers have been installed, with all bridge interface detail and loadings specified in the engineering package for CAT III certification.
On this install, a cantilever was built around the perimeter of the rig, allowing system scaffold to be built and encapsulated to facilitate blasting and painting operations. The cantilever also provided material supply and personnel access to the deck.
Rigmar provide both tactile and visual inspection-at-height services for steel and masonry structures. Photos, measurements and final reports can be provided in line with the client’s specifications.
Rigmar examined and pull-tested in-situ anchors on all four faces of the three primary towers of a major cable stay bridge structure in the UK. A full report was completed that recorded condition observations and mapped anomaly locations. This led to a retro-fit-and-replace programme to close-out the works.
The photo above shows a Rigmar rope access technician carrying out a DEMEC Strain Gauge measurement survey on a concrete tower from an elevation of 147m above the car deck. Readings are taken by placing studs either side of any visible cracks with reference to pre-placed studs. These are recorded, mapped and re-visited later to identify any crack propagation.
Using roller slings combined with a ‘rig-for-rescue’ lowering set-up, Rigmar’s technicians examined the cable stays from the tower interface down to the road deck.
Working at Height Rescue
On larger projects with multiple working-at-height (WAH) activities, it is essential to have the capability to provide rescue and first-response functions that are suitable to the tasks being undertaken. On a recent cable stay bridge project, Rigmar and several other WAH companies deployed up to 100 personnel on site at any one time, working above and below deck in a range of scenarios. Rigmar provided around-the-clock rescue and first-response support for the entire project.
Rigmar’s technicians regularly practiced lowering rescue exercises using a pre-rigged system on the tower and roller slings on the casualty. Continuous site audits were conducted and a T-Card system, cross-referenced to a specific rescue plan, was used to monitor work activities. Where deemed ‘complex’, rescue drills such as that above were conducted on each fortnightly shift rotation, with both teams present.
Another ‘complex rescue’ drill being carried out. This scenario was based on rescuing personnel from inside the towers below car deck level using a stretcher.
Assembly & Fixing
Rigmar offers a broad range of trade skills on the ropes including: welding, fabrication, inspection, electricians, painting, blasting, rigging, assembly and fixing.
Our assembly and fixing capabilities complement our rigging and rope access expertise, providing the ability to conduct complex installations at height, with both intricate and robust components.
In 2017 Rigmar’s specialist access division was contracted to install a combination of tension rings and guide deviators, totalling 288 cable stay interfaces with the three main towers. This required a combination of rope access and suspended access platforms to provide access for rigging and assembly. Bespoke tooling was used to compress the primary strands into the required pattern, prior to installing fixings and weather sealing before locating the outer sleeves. Rigmar accumulated over 55,000 hours on this project, with zero accidents or incidents, contributing to the on-time completion of this work scope in time for the ‘grand opening’.