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Flood Control & Coastal Protection

As engineers, we understand the critical importance of ensuring the safety and security of communities in high-risk areas. The Philippines, being an archipelagic country with 7,641 islands, is no stranger to such vulnerability. We are equipped with extensive local terrain knowledge combined with internationally proven technologies that enable us to create tailored solutions that mitigate environmental threats, providing protection and peace of mind to those who need it most.

ITEM 715 | Geotextile Tubes

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GGeotextile tubes, also referred to as geobags, are container structures containing high-strength woven geotextile fabrics designed to withstand high pressure. These tubes have garnered increasing popularity due to their exceptional efficiency in dewatering, flexibility, and ability to expand and hold form. Geotextile tubes are used for river and coastal protections, dam protections, flood control, ports, mining, and industrial waste dewatering.

High quality and durability to ensure long-term effectiveness of structures

  • High mechanical and filtration performance to enhance usage efficiency

  • Environmentally friendly with less carbon emission

  • Easy handling and installation to reduce construction time and costs

  • Cost-effective

ITEM 515 | Geogrid

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Geogrids are flexible woven geogrids fabricated with high molecular weight and low-creep polyester (PET) yarns, which provide a wide range of tensile strength for different soil reinforcement applications. Geogrids are uniformly coated with protective, non-toxic substances to enhance their overall resistance to abrasion, ultraviolet light, weathering, acid, alkali, biodecomposition, and other possible external conditions that may affect product performance. The geogrids are highly stable and durable against UV light and weathering (proven in both lab and outdoor tests).

Build more efficiently and sustainably than with standard methods.

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ITEM 511 | Gabions

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Introducing our premium quality gabion baskets, engineered to provide robust and eco-friendly solutions for erosion control, landscape beautification, and coastal protection. Crafted from high-tensile galvanized steel wire or PVC-coated wire, our gabions are designed to withstand the toughest environmental conditions, ensuring long-lasting durability and structural integrity.

Road Improvement

Road improvement projects are essential in the Philippines to improve transportation infrastructure and ensure safe, efficient, and sustainable travel for everyone. Among the most significant road improvement projects are the installation of solar studs, guardrails, and solar lights. Our engineering solutions for road improvements are designed to meet the specific needs of the region, providing practical and cost-effective solutions to address the challenges posed by the country's transportation infrastructure. We strive to improve the functionality and safety of roads, ensuring that they keep pace with the needs of the growing population and economic activity.

Solar Lights

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Solar lights are used in national roads, barangay roads, bypass roads, and coastal roads.

Rockfall Netting

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Rockfall netting is wire mesh netting used to prevent rocks from falling onto roads, railways, and other structures. The wire used in the manufacture of rockfall netting is heavily zinc coated.

Case Study Summary:
Flood Control Protection Project Along Bangut River,
Capas, Tarlac

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BEFORE

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AFTER

CAPAS TARLAC – GEOTEXTILE TUBE 

 

Bangut River in Capas, Tarlac, is crucial for local agriculture but poses significant flooding risks during typhoons and heavy rains. The rising water levels frequently lead to flooding of adjacent farmlands, threatening crops and disrupting farming activities. The area features loose, sandy soils on the riverbanks, a tropical climate with intense rains and typhoons, and flat terrain that is prone to overflow.

Solution: Geotextile Tube Flood Control

To mitigate these flooding issues, the project utilizes geotextile tubes—large, cylindrical containers made of durable fabric filled with sand or soil. These tubes are designed to create a robust flood barrier. The solution involves:

  1. Site Assessment: Detailed surveys of hydrology, soil properties, and sediment transport to pinpoint critical areas needing protection.

  2. Design and Planning: Selection of appropriate geotextile tubes and development of a barrier design to manage river overflow. Integration of drainage and erosion control measures.

  3. Installation: Preparation of the riverbank, strategic placement of geotextile tubes, and backfilling for stability. Regular inspections and maintenance to address any issues.

Benefits:

  • Effective Protection: Provides a strong barrier against flooding.

  • Quick Installation: Modular design allows for fast setup.

  • Cost-Effective: Affordable compared to permanent structures.

  • Low Environmental Impact: Minimally invasive installation.

The project demonstrates the effectiveness of geotextile tubes in managing flood risks and protecting agricultural lands from severe weather impacts.

Case Study Summary:
Soil Stabilization Project Along Bais-Kabankalan Road,
Negros Occidental

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BEFORE

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AFTER

BALAYAN BATANGAS – GEOTEXTILE TUBE

 

Bais-Kabankalan Road is a crucial transport route in Negros Occidental, facilitating key economic and connectivity functions. However, certain sections of the road suffer from soil instability, leading to frequent slips and erosion that compromise safety and road functionality. The region's predominantly clayey and silty soils, combined with a tropical climate and hilly terrain, exacerbate these issues.

Solution: Geogrid Reinforcement

To address these stability problems, the project employs geogrid technology. Geogrids are geosynthetic materials with a grid-like structure that reinforce soil by distributing loads and enhancing stability. The solution involves:

  1. Site Assessment: Conducting a thorough investigation of soil conditions and identifying critical areas needing stabilization.

  2. Design and Planning: Selecting appropriate geogrid materials, designing layering configurations, and integrating drainage solutions.

  3. Installation: Preparing the site, placing geogrid layers, backfilling, and compacting to ensure stability.

  4. Monitoring and Quality Assurance: Regular inspections and adjustments to ensure the effectiveness of the geogrid reinforcement.

Benefits:

  • Enhanced Soil Stability: Increased load-bearing capacity and reduced erosion risk.

  • Improved Road Safety: Stabilized foundation reducing accident risks.

  • Cost-Effective: Long-term savings through minimized repairs.

  • Durability: Extended infrastructure lifespan.

Challenges and Mitigations:

  • Material Degradation: Use UV-resistant geogrids and perform routine inspections.

  • Soil Variability: Customize geogrid designs based on specific site conditions.

This project demonstrates the effectiveness of geogrid reinforcement in solving soil stability issues, improving road safety, and providing a sustainable solution for infrastructure challenges.

Case Study Summary:
Coastal Protection Project in Balayan, Batangas

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BEFORE

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AFTER

BALAYAN BATANGAS – GEOTEXTILE TUBE

 

Balayan, a coastal municipality in Batangas, faces severe erosion and flooding issues due to typhoons and heavy rainfall. The shoreline is composed of loose sediments that are easily eroded by high wave action. The area's tropical climate and flat coastal topography exacerbate these problems, making the residential areas highly vulnerable to flood risks and property damage.

Objective:

To prevent flooding and coastal erosion by implementing a combined coastal protection system using geotextile tubes and concrete wave deflectors.

Solution:

  1. Geotextile Tubes:

  • Description: Large cylindrical fabric containers filled with sand or other materials, designed to create a flexible barrier against erosion.

  • Implementation: Installed along the shoreline in a staggered configuration to form a protective barrier. Site preparation included clearing debris and grading, followed by anchoring and covering the tubes to ensure stability.

   2. Concrete Wave Deflectors:

  • Description: Structures designed to redirect and dissipate wave energy, reducing the impact on the shoreline.

  • Implementation: Concrete wave deflectors were constructed at strategic locations to intercept and deflect incoming waves, working in conjunction with the geotextile tubes to enhance shoreline protection.

Additional Measures:

  • Drainage Systems: Implemented to manage water runoff and reduce flood risks.

  • Monitoring and Maintenance: Regular inspections and maintenance were established to ensure the effectiveness of both geotextile tubes and concrete deflectors.

Benefits:

  • Effective Erosion Control: Combines two technologies for robust shoreline protection.

  • Flood Risk Reduction: Safeguards residential areas from flood damage.

  • Enhanced Resilience: Improves the coastal zone's ability to withstand severe weather.

  • Cost-Effective: Offers significant protection at a manageable cost.

  • Low Environmental Impact: Minimizes disruption to local ecosystems.

Case Study Summary:
Rock Fall Netting Project along Sierra Bullones Road,
Jagna, Bohol

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BEFORE

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AFTER

BOHOL - ROCK FALL NETTING PROJECT

 

Sierra Bullones Road is a crucial transportation link in Jagna, Bohol, connecting remote communities to urban areas. The mountainous terrain and heavy monsoon rains have led to frequent landslides and rock falls, posing significant risks to public safety and disrupting local commerce. Recent incidents of falling debris have resulted in road closures and injuries, highlighting the need for a sustainable solution.

Problem Statement:

 

Key challenges included:

  • Geological Instability: Steep slopes and loose rock formations increase the risk of rock falls.

  • Public Safety Risks: Frequent rock falls create hazardous conditions for motorists and pedestrians.

  • Economic Impact: Road closures disrupt transportation and local businesses.

Solution:

A comprehensive rock fall netting project was implemented, consisting of:

  1. Site Assessment: Geological surveys identified high-risk areas, and engineers evaluated soil and rock stability.

  2. Design and Engineering: A tailored design using high-tensile steel mesh was created, along with anchor systems for secure installation.

  3. Installation Process: Debris was cleared, anchors and netting were installed, and monitoring systems were integrated to track rock movement.

  4. Community Engagement: Informational sessions educated residents and established a feedback mechanism for ongoing communication.

Outcomes:

  • Enhanced Safety: A significant reduction in rock fall incidents post-installation.

  • Increased Accessibility: The road remained open during adverse weather, supporting local traffic.

  • Cost Efficiency: Lower maintenance costs for landslide repairs resulted in savings for local government.

  • Community Support: Greater awareness and collaboration with residents fostered ownership of road safety.

Conclusion:

 

The project successfully addressed the risks of landslides and rock falls, improving road safety and contributing to the sustainability of infrastructure.

Recommendations:

  • Implement regular monitoring and inspections.

  • Engage local stakeholders in maintenance and safety updates.

  • Explore advanced materials and technologies for future projects.

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