THE WORKING PLATFORM SOLUTION

Product catalog summary

Introduction
Every year, construction equipment such as cranes and drill rigs become unstable due to poor ground conditions, leading to potential fatalities and equipment damage. Temporary granular platforms are increasingly required on construction sites to address this issue. However, the importance of proper design and maintenance is often overlooked.

Guidelines and Standards
The UK Centre of Building Science (Building Research Establishment Ltd, BRE) has published a guide, BRE BR470, which provides a framework for the design, installation, and maintenance of granular platforms. It covers both unreinforced and reinforced platforms on various subgrades and introduces analytical methods based on classical bearing capacity and punching shear capacity concepts.

Design Methods
BRE BR470 allows for alternative methods, including geosynthetic manufacturers' design methods. These methods may involve increased load distribution angles, enhanced formation bearing capacity, and experimental determination of load distribution improvement factors. Recommendations include ensuring experimental testing and theoretical design are representative of actual conditions and validated by case studies.

Geosynthetic Solutions
NAUE's subsidiary, BBG, offers design services for geosynthetic solutions. NAUE has conducted extensive research on their Secugrid® and Combigrid® products, demonstrating their effectiveness in working platforms through laboratory and full-scale trials.

Secugrid® Features
Secugrid® geogrids are made from high-quality polypropylene or polyester bars, providing high tensile strength at low strains. They offer excellent aperture stability and resistance against twisting stresses, enhancing the bearing capacity of reinforced aggregate layers.

Combigrid® Applications
Combigrid® combines Secugrid® geogrid with a Secutex® nonwoven geotextile, offering reinforcement, separation, filtration, and drainage. It is suitable for subsoils with a CBR value of less than 3%, commonly used in base courses, foundations, and access roads.

Conclusion
Properly designed and maintained granular platforms are crucial for the stability and safety of construction equipment. The use of geosynthetic solutions like Secugrid® and Combigrid® can significantly enhance platform performance, reduce maintenance needs, and extend service life.

Catalog excerpts

THE WORKING PLATFORM SOLUTION

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The Working Platform Solution Every year, cranes, piling rigs and rotary drill rigs fall over or become unstable due to in Every year, cranes, piling rigs and rotarymaintained onsite ground conditions. Theseto inadequately pre- cause pot prepared or drill rigs fall over or become unstable due types of events can pared or maintained onsitefatalities,conditions. These types of events can cause potential fatalities, ground serious injuries and cause extensive damage to equipment. serious injuries and cause extensive damage to equipment. Therefore temporary granular platforms are now becoming a requirement...

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The methods and the assumptions used can include: • Increased angle of load distribution • Enhancement of formation bearing capacity • Experimental determination of load distribution improvement factor (for reinforced vs unreinforced platforms) • Use of bespoke partial factors When using the advice and design methods provided by geosynthetic manufacturers it is also recommended that: • Experimental testing and theoretical design is representative of actual installation and use conditions. • Experimental testing and theoretical design are validated by representative case studies. • Products are...

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Advantages of Secugrid® and Combigrid® • Very high strength at low strains • Immediate interlocking effect • High angles of friction due to textured geogrid surfaces • High aperture stability • High radial stiffness • Uniaxial geogrid strengths up to 500kN/m • Available with bonded Secutex® nonwoven (Combigrid®) • Quick and easy to install • High resistance to installation damage • Made from uniformly extruded solid PET or PP bars • High resistance against biological and chemical attack Secugrid® Soil Reinforcement - Technical Back-up Secugrid® geogrids are manufactured from high-quality polypropylene...

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low elongations reduces deformations in the subgrade and preserves the reinforced surface. The bearing capacity of the reinforced aggregate layer is increased. The maintenance needs are greatly reduced and the service life is extended. Independent testing has shown the beneficial impact of the high radial stiffness of Secugrid® (figure  when compared to similar available 5) products in base course structures. NAUE manufactures Secugrid® in various common and project-specific tensile strengths to meet individual project design and specification requirements. Easy installation on the jobsite and...

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THE WORKING PLATFORM SOLUTION

THE WORKING PLATFORM SOLUTION

Catalog excerpts

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