Hiscs - LMK PT System

29/05/2026

Bridge Maintenance - Urgent Elastomeric Expansion Joint Replacement

Our team completed the emergency replacement of a critically deteriorated elastomeric expansion joint mat, on a heavily trafficked bridge, serving as the primary access corridor to a major industrial and logistics hub with continuous heavy truck circulation.

The existing joint had reached an advanced state of deterioration, posing significant risks to the structural integrity and operational reliability of the bridge. Immediate intervention was essential to prevent water infiltration, progressive deck deterioration, increased dynamic loading impacts, and potential disruptions to a critical transportation route supporting regional industrial activity.

Despite highly demanding traffic conditions and continuous operational constraints, the project was executed safely, efficiently, and within an accelerated timeframe, ensuring uninterrupted traffic flow and minimizing disruption to commercial transport operations and the traveling public.

We continue to deliver reliable, high-quality bridge maintenance solutions that prioritize safety, durability, and operational continuity.

24/04/2026

Fresh Space, Fresh Energy: Welcome to Our New Offices

We’re excited to announce our relocation to a newly renovated office building, designed to support the next chapter of our company’s growth.

Our new facilities cover an area of 750m2 and include:
• Improved workspaces with administration offices and meeting rooms that enhance productivity and collaboration across our teams
• A modern warehouse, fully equipped for efficient storage and heavy-duty handling with pallet racks & stackers
• A workshop fitted with industrial cranes to support equipment maintenance and heavy-duty operations
As we celebrate 12 years since the establishment of HiSCS, we are excited to move into our new space, reaffirming our commitment to excellence and those who have trusted us over the years. This move is a major milestone for us and reflects our continued investment in innovation, efficiency, and people. We’re proud of how far we’ve come — and even more excited about what’s ahead.

07/04/2026

Working at Height – General Applications: Training Course Highlights

Οur team had the opportunity to participate in the specialized training course “Working at Height – General Applications.” The training was conducted by the Hellenic Institute for Occupational Health and Safety (ELINYAE), the main institution in Greece responsible for collecting and disseminating knowledge on Occupational Health and Safety (OHS). With extensive experience in high risk work environments and accredited instructors, the institute provided high quality, up to date guidance based on current legislation, best practices, and real world industry standards. The course was designed with a balanced combination of theoretical and practical learning.

In the theoretical section of the course, participants explored key legislation and safety regulations related to working at height, along with risk assessment procedures and hazard identification. They also learned how to properly select, inspect, and maintain personal protective equipment (PPE), and reviewed best practices for the safe use of ladders, scaffolding, and fall prevention systems.

The hands on portion allowed participants to practice the correct use of safety harnesses and fall arrest systems while performing simulated work at height tasks under instructor supervision. During these exercises, they familiarized themselves with rescue procedures and emergency protocols, building confidence through real life scenarios designed to replicate everyday field conditions.

The “Working at Height – General Applications” training course aimed to strengthen our awareness, knowledge, and hands on skills for performing tasks safely and efficiently when working above ground level. It reflects our company’s ongoing dedication to creating a safe workplace and continuously enhancing the professional skills of our people. By investing in comprehensive training, we ensure that everyone returns home safe at the end of the day—and that we uphold the highest standards in all operations involving elevated work.

19/03/2026

Evaluation of In-service Stressing Force on Existing Temporary Ground Strand Anchors.

In strand ground anchors, once the excess strand length has been cut off after installation, no accessible strand remains to which conventional load measuring devices (jacks) can be attached. As a result, it becomes impossible to directly verify or evaluate the actual force currently carried by the anchorage.

During a project, the need arose to determine the in service (operating) stressing force of several previously installed strand ground anchors. A method was required that could accurately assess the existing load despite the absence of exposed strand length.

HiSCS designed, procured, fabricated, and implemented a customized testing configuration for the assessment of existing temporary ground anchors. Our team installed a system of supplementary stressing plates, connected with high strength strands, and secured using additional barrels and wedges. A single acting, low profile hydraulic jack with a hand pump was positioned between the plates to operate as a proof load indicator. Detailed measurements were recorded throughout the stressing procedure, enabling accurate evaluation of the in service (operational) stressing force. Overall, the applied testing configuration facilitated a precise and comprehensive assessment of the anchors’ operational load bearing behavior.

HiSCS provides high quality, fit for purpose engineering services, built on proven expertise in specialized projects and complex implementations.

03/03/2026

Installation of Elastomeric Expansion Joints on a Newly Constructed Concrete Bridge, Evia Island, Greece

HiSCS has completed the initial placement - installation of elastomeric expansion joints on a new concrete road bridge project.

The installed joints accommodate ±60 mm of longitudinal and transverse movement, ensuring the bridge remains safe, durable, and comfortable for users in full compliance with the structural design requirements. The total installed joint length was 20 meters.

These flexible, durable components may seem small compared to the scale of the bridge, but they play a critical role in long-term safety and performance:
• Accommodating Movement: As the bridge expands and contracts due to temperature changes and traffic loads, the joints ensure controlled, stress-free movement.
• Protecting the Structure: Properly installed elastomeric joints seal out water and debris, preventing corrosion and preserving the bridge’s structural health.
• Enhancing Ride Quality: A smooth, well installed joint means a smoother experience for every vehicle that crosses.
• Extending bridge lifespan. With proper performance and maintenance, these joints help reduce long-term repair costs and improve overall durability.

Our team is proud to deliver high quality workmanship at every stage of construction, and today’s progress brings us one step closer to completing a resilient, long-lasting piece of infrastructure for the community.

11/02/2026

Bridge Jacking & Elastomeric Bearing Replacement, Athens - Greece

Bridge bearings play a critical role in transferring loads and accommodating movements between a bridge’s superstructure and substructure. When bearings deteriorate, timely replacement is essential to maintain structural safety and performance.

HiSCS recently completed the replacement of a damaged elastomeric bearing on a bridge pier supported by four bearings. A comprehensive jacking study was carried out in advance, defining the equipment layout, jack capacities, synchronization strategy, and all required safety measures.

The operation involved ten hydraulic jacks with a total lifting capacity of 1,000 tons. The bridge was carefully lifted under continuous monitoring of loads and displacements. Once the structure was stabilized, the deteriorated bearing was removed and the new bearing installed with precise positioning and alignment.

The works were completed safely and efficiently, restoring the bridge’s structural performance and ensuring long-term reliability. Precision engineering, rigorous safety planning, and expert ex*****on remain at the core of every HiSCS lifting operation.

22/12/2025

Soil & Rock Anchors

HiSCS has been awarded the stressing, testing & grouting works of soil anchors in the project named “PROJECT VORIA”.
It concerns the construction of a complex building for a multi-dynamic mixed-use. These 52 acres complex will include a state-of-the-art casino, a 150-room 5-star hotel, a 1400-seat conference amphitheatre, many dining and entertainment facilities and 836-space parking lot.

HiSCS has undertaken part of the preliminary geotechnical works related with the installation, stressing and grouting of soil anchors.

Soil and rock anchors are geotechnical elements, typically formed by strand tendons grouted into drilled holes. These anchors are used to transfer tensile loads to solid ground, thus preventing movements in slopes, retaining walls and foundations by providing resistance against uplift forces, lateral pressures, or landslides. They are essential for stabilizing excavations without internal bracing. They consist of a bonded section (grouted and bonded to soil), a free stressing length, and the basic stressing elements which are the anchor head with barrels and wedges, where tension is applied to the strands using jacks after grout curing to lock them in place.

The design specifies more than 700 temporary anchors with 3 and 4 seven-wire strands, having nominal diameter of 15.2mm. The anchors are distributed every 2-2.4m, at three different elevations along 247 concrete piles of 0.8m diameter. The piles are drilled using a crawler-mounted rig at a total depth of about 25m.
The soil anchors are inserted manually through the hole having 12m bonded section. The bonded section of the anchor consists of bare strands connected at intervals of about 1m using plastic spacers in the intermediates, so as to develop the needed bonding with the grout. The free part of the anchor (strands covered with a plastic tube which ensures the separation of the strands from the grout), allows the anchor’s elongation, thus application of tensile forces during the stressing process. The installation is completed with the placement against the pile of the anchor plate with barrels and wedges.

HiSCS has been appointed to execute the stressing and grouting works including the needed suitability, acceptance, and pullout tests as well as the placement of load cells in specific locations to monitor the behaviour of the anchors (stressing forces over time). Mono-strand hydraulic jacks connected in parallel with a hydraulic pump have been used to develop the required by the design stressing force (330-380KN/anchor).

03/11/2025

LMK Post Tensioning System

Have you ever considered how contemporary bridges maintain their strength, elegance, and resilience under substantial loads and environmental pressures? The answer lies in post-tensioning— a sophisticated construction technique wherein steel tendons are tensioned after the concrete has been cast. This method offers several key advantages:
• Enhanced load-bearing capacity
• Minimized cracking and structural deflection
• Facilitation of longer spans with reduced material usage

From elegant cable-stayed designs to massive highway overpasses, post-tensioning helps engineers push the boundaries of what's possible.

LMK Post Tensioning system responds proactively to the trends of Int'l markets having successfully accomplished numerous projects involving all types of construction methods, from simply supported beams to slabs, cantilevers, incremental launching and segmental structures, demonstrating solid experience in the PT technology.

LMK Post Tensioning system has successfully passed many efficiency tests proving the quality and adequacy in line with Int'l specifications & standards such as EN - EAD - ETAG, AASHTO LRFD, F.I.B. (Federation Int'l du Beton) & PTI (Post Tensioning Institute), demonstrating the following advantages:
• Wide selection of compact anchorages with improved load distribution surfaces.
• Easy coupling with standard or enlarged steel or plastic sheaths (flat and round).
• Frontal grouting/connection arrangement.
• Light weight configuration, facilitating the handling and installation.
• Recesses of smaller dimensions.
• Lower losses and smaller tendons deviations contributing to the economy of the design & construction.

HiSCS can provide full engineering services and support, including preliminary and final designs, supply of materials, equipment/machinery, installation, training, supervision, stressing, grouting, planning and management services and customized solutions for all types of structures.

HiSCS LMK Post Tensioning Systems

14/10/2025

Bridge Maintenance: Elastomeric Expansion Joints Replacement

Maintaining the integrity and safety of bridge infrastructure is a continuous effort — and one of the most critical components in this process is the elastomeric expansion joint.

HiSCS undertook an extensive maintenance project to selectively replace twenty-eight elastomeric expansion joint mats of different sizes at several locations across the Athens International Airport access bridges.

These joints allow bridges to expand and contract with temperature changes, traffic loads, and structural movement, ensuring long-term durability and smooth driving conditions. Over time, wear and tear can compromise their performance, making timely replacement essential.

Our latest maintenance operation focused on replacing aged elastomeric joints, aiming to restore flexibility, sealing, and load transfer capabilities across the deck.

Benefits of replacement:
• Enhanced ride comfort
• Improved water tightness
• Reduced structural stress
• Extended bridge lifespan

Bridge maintenance isn’t just about repairs — it’s about preserving safety, performance, and reliability for years to come.

30/09/2025

Overhead Movable Scaffolding System (OMSS)

We’re proud to announce the successful first launchings of the Overhead Movable Scaffolding System (OMSS) — a cutting-edge bridge construction method that enables the rapid and safe er****on of spans without the need for ground-based support. This system has now placed the initial segments of what will become Greece’s longest bridge, a 4 km engineering feat forming the backbone of the Thessaloniki Flyover, a new elevated expressway stretching 7.6 km above the existing Eastern Ring Road.

This transformative infrastructure project marks a leap forward for urban mobility in Thessaloniki, replacing a road network originally designed in the 1970s–80s with a modern, high-capacity solution.

During the launchings, teams from NRS (the OMSS manufacturer) and engineers from HiSCS were on-site, working closely with construction crews to ensure precision, safety, and efficiency in deploying the system.

With over 35 years of experience, NRS continues to provide expert support in planning and optimizing OMSS operations, helping meet the demanding technical requirements of this landmark project.

As the official representative of NRS in Greece, HiSCS is honored to contribute to one of the country’s most ambitious and technically advanced infrastructure endeavors.