Secugrid® HS high strength geogrid for soil reinforcement

Secugrid^® HS is a high-strength geogrid for soil reinforcement in embankments, load transfer platforms and void bridging.
High-tenacity PET filaments with PE coating and welded junctions resist tensile forces, limiting soil deformation under load.
Strength range from 500 to 1,200 kN/m (nominal tensile strength, longitudinal and transverse, DIN EN ISO 10319)
CE marking · BBA/HAPAS certificate · ISO 9001 · Deutsche Bahn HPQ (HS 600/800/1200) · TL Geok E-StB

Secugrid^® HS is a high-performance geogrid designed for soil reinforcement in the most demanding geotechnical applications. It is ideally suited for use in embankment foundations (with or without pile support) and in wall or slope systems. Manufactured from high-tenacity polyester (PET) filaments with robust welded junctions, Secugrid^® HS provides exceptional stiffness and long-term resistance to deformation under sustained loads. With nominal tensile strengths ranging from 400 to 1,200 kN/m, it covers the full spectrum of high strength reinforcement requirements.

Standard geogrids can reach their limits in very high embankments, large retaining structures, and safety-critical infrastructure, where insufficient reinforcement may lead to slope instability, excessive deformation, or settlement. Secugrid^® HS addresses these challenges with tensile stiffness at 1% strain up to 20,400 kN/m and ultimate tensile strength of up to 1,200 kN/m, enabling mobilisation of the required design tensile strength at very low elongation. This ensures reliable structural performance while maintaining strict serviceability limits.

Secugrid^® HS enables optimisation of load transfer platforms by reducing both aggregate volume and required pile spacing, lowering material and installation costs. A single, certified product family with five strength grades streamlines procurement and ensures consistent quality control across all reinforced layers.

Secugrid^® HS carries certifications with product-specific reduction factors for 120-year design life, different fill materials (e.g. coarse-gravel), environmental effects like pH-value of the fill for ranges between 4.1 to 9.0. EBGEO long-term design strength R_B,d: 218.4 to 524.1 kN/m (DS-P, 0/32 gravel, pH 4 to 10, 120 years).

Secugrid^® HS geogrid function:

Reinforcement
High-tenacity PET filaments with an extruded polyethylene protective coating and welded junctions resist tensile forces within the reinforced soil structure, mobilising the design tensile strength ensuring stability of embankments on soft soils by mitigating typical failure mechanisms such as deep-seated rotational slip, lateral spreading, and excessive settlement.

Secugrid^® HS geogrid advantages: high stiffness and long-term tensile strength

High robustness
Extensional tensile stiffness up to 20,400 kN/m at 1% strain keeps deformation under service loads well within serviceability (SLS) limits. This is essential for controlling settlement, lateral spreading, and overall deformation.
Long-term minimal creep
Low creep tendency is verified in accordance with polymer-specific reduction factors per EBGEO or BS8006-1. The extruded PE protective coating ensures long-term durability with a design life of at least 100 years.
HPQ approved
Secugrid^® HS 600, 800, and 1200 hold Deutsche Bahn (German Railways) HPQ (manufacturer-specific product qualification) for application 3.8 per DBS 918 039. Directly specifiable on German Railways (DB AG) infrastructure projects.

Application areas

High-strength geogrid for load transfer platforms over piles
Where embankments are supported on piled foundations, Secugrid^® HS forms the reinforced load transfer platform that carries the fill load to the pile caps. By distributing the load within the reinforced base course towards the piles, it relieves stress on the soft soil between them.
The high tensile strength enables larger pile spacings and absorbs lateral thrust, eliminating the need for raking piles. Differential settlements are mitigated and no waiting time for consolidation is required.
High-strength geogrid for embankments on soft soil
Where embankments are supported on piled foundations, Secugrid^® HS forms the reinforced load transfer platform that carries the fill load to the pile caps. By distributing the load within the reinforced base course towards the piles, it relieves stress on the soft soil between them.
The high tensile strength enables larger pile spacings and absorbs lateral thrust, eliminating the need for raking piles. Differential settlements are mitigated and no waiting time for consolidation is required.
Further use cases
- Soft ground construction
  Soft ground construction involves building embankments, roads and structures on weak or compressible soils. Secugrid^® and Combigrid^® distribute loads, control settlement and maintain structural integrity in line with international standards.
  Basal reinforcement beneath road and railway embankments
  Abutments and approach embankments to bridges
  Widening of existing embankments
- Access roads and structures
  Mining haul roads are access routes for heavy transport in open-cast and underground mines. Repeated loading causes rutting and surface deterioration on weak or variable subgrades. Secugrid^® geogrids and Combigrid^® geocomposites stabilise the base course, distribute loads and extend service life.
  Embankments and platforms in subsidence-prone mining areas
  Heavy load platforms and foundations on soft subgrades

Where embankments are supported on piled foundations, Secugrid^® HS forms the reinforced load transfer platform that carries the fill load to the pile caps. By distributing the load within the reinforced base course towards the piles, it relieves stress on the soft soil between them.

The high tensile strength enables larger pile spacings and absorbs lateral thrust, eliminating the need for raking piles. Differential settlements are mitigated and no waiting time for consolidation is required.

Aerial view of a construction site with Secugrid® HS geogrid laid on soft soil for a load transfer platform.

Where embankments are supported on piled foundations, Secugrid^® HS forms the reinforced load transfer platform that carries the fill load to the pile caps. By distributing the load within the reinforced base course towards the piles, it relieves stress on the soft soil between them.

The high tensile strength enables larger pile spacings and absorbs lateral thrust, eliminating the need for raking piles. Differential settlements are mitigated and no waiting time for consolidation is required.

Aerial view of construction workers installing a large white Secugrid® HS geogrid layer on a dyke construction project.

Soft ground construction
Soft ground construction involves building embankments, roads and structures on weak or compressible soils. Secugrid^® and Combigrid^® distribute loads, control settlement and maintain structural integrity in line with international standards.
- Basal reinforcement beneath road and railway embankments
- Abutments and approach embankments to bridges
- Widening of existing embankments
Access roads and structures
Mining haul roads are access routes for heavy transport in open-cast and underground mines. Repeated loading causes rutting and surface deterioration on weak or variable subgrades. Secugrid^® geogrids and Combigrid^® geocomposites stabilise the base course, distribute loads and extend service life.
- Embankments and platforms in subsidence-prone mining areas
- Heavy load platforms and foundations on soft subgrades

Technical properties

Property	Unit	HS 500/100 R6	HS 600/100 R6	HS 800/100 R6	HS 1000/100 R6	HS 1200/100 R6
Product build-up
Raw material	—	Polyester (PET)	Polyester (PET)	Polyester (PET)	Polyester (PET)	Polyester (PET)
Geogrid	—	Laid geogrid of high-tenacity PET filaments with welded junctions	Laid geogrid of high-tenacity PET filaments with welded junctions	Laid geogrid of high-tenacity PET filaments with welded junctions	Laid geogrid of high-tenacity PET filaments with welded junctions	Laid geogrid of high-tenacity PET filaments with welded junctions
Protective coating	—	Extruded polyethylene sheathing	Extruded polyethylene sheathing	Extruded polyethylene sheathing	Extruded polyethylene sheathing	Extruded polyethylene sheathing
Mechanical properties
Nominal tensile strength, md / cmd	kN/m	≥ 500 / ≥ 100	≥ 600 / ≥ 100	≥ 800 / ≥ 100	≥ 1,000 / ≥ 100	≥ 1,200 / ≥ 100
Property	Unit	HS 500/100 R6	HS 600/100 R6	HS 800/100 R6	HS 1000/100 R6	HS 1200/100 R6
Tensile strength at 2 % strain, md	kN/m	120	144	192	240	288
Elongation at nominal tensile strength, md / cmd	%	≤ 10.5 / ≤ 10.5	≤ 10.5 / ≤ 10.5	≤ 10.5 / ≤ 10.5	≤ 10.5 / ≤ 10.5	≤ 10.5 / ≤ 10.5
Tensile stiffness at 1 % strain, md	kN/m	8,500	10,200	13,600	17,000	20,400
Max. creep strain at 45 % degree of utilisation (1 day – 120 years, verified by isochronous curves)	%	≤ 0.50	≤ 0.50	≤ 0.50	≤ 0.50	≤ 0.50
Construction related strain	%	0	0	0	0	0
Design values
Property	Unit	HS 500/100 R6	HS 600/100 R6	HS 800/100 R6	HS 1000/100 R6	HS 1200/100 R6
Design resistance R_B,d in final state (120 years, ballast 0/32, pH 4–10, BS-P acc. to EBGEO)	kN/m	≥ 218.4	≥ 262.0	≥ 349.4	≥ 436.8	≥ 524.1
Long-term design strength T_D, md (120 years, coarse gravel ≤ 35 mm, pH 4.1–9.0, acc. to BBA/HAPAS certificate)	kN/m	—	≥ 342	≥ 452	≥ 565	≥ 685
Durability of the protective coating
Weather resistance	—	High	High	High	High	High
Durability of the protective coating	years	100	100	100	100	100
Durability (Annex B, DoP), natural soils pH 4–9, soil temperature < 25 °C	years	≥ 100	≥ 100	≥ 100	≥ 100	≥ 100
Property	Unit	HS 500/100 R6	HS 600/100 R6	HS 800/100 R6	HS 1000/100 R6	HS 1200/100 R6
Delivery form and certification
Roll dimensions, width x length	m	4.75 x 100	4.75 x 100	4.75 x 100	4.75 x 100	4.75 x 100
Product name printed on product, max. distance	m	5.0	5.0	5.0	5.0	5.0
CE marking	—	Yes	Yes	Yes	Yes	Yes
BBA certificate or equivalent expert report for product-specific reduction factors	—	Required	Required	Required	Required	Required
Deutsche Bahn HPQ approval, application case 3.8 acc. to DBS 918 039	—	—	Yes	Yes	—	Yes
Property	Unit	HS 500/100 R6	HS 600/100 R6	HS 800/100 R6	HS 1000/100 R6	HS 1200/100 R6
Further certification	—	DIN 18200, EN ISO 9001	DIN 18200, EN ISO 9001	DIN 18200, EN ISO 9001	DIN 18200, EN ISO 9001	DIN 18200, EN ISO 9001

Secugrid® HS geogrid installed as a load transfer platform over piles during bridge construction at the Minden Waterway Junction (Weser–Mittelland Canal), Germany. — Installation of Secugrid^® HS as a load transfer platform over piles during bridge construction at the Minden Waterway Junction, where the Weser River crosses the Mittelland Canal, Germany. The high extensional stiffness of Secugrid^® HS enables efficient load transfer from the embankment to the pile-supported foundation.

Why extensional stiffness at low strain matters more than peak tensile strength

Secugrid^® HS is designed for applications, where the reinforcement must mobilise tensile forces at very small strains. This highlights the key difference between peak tensile strength and extensional stiffness.

Peak tensile strength (e.g. 1,200 kN/m for Secugrid^® HS 1200/100 R6) defines failure capacity, but embankment performance is governed by serviceability. Excessive settlement and lateral spreading occur long before ultimate strength is reached. At low strains, a geogrid with low tensile stiffness mobilises insufficient tensile force, allowing deformation and instability to develop.

Secugrid^® HS provides very high extensional stiffness at low strain. At 1% elongation, Secugrid^® HS 1200 mobilises up to 20,400 kN/m, activating tensile resistance early. This effectively controls settlement, limits lateral spreading, and ensures stable, serviceable embankments on soft subgrades.

Secugrid^® HS extensional stiffness at 1% strain (DIN EN ISO 10319): HS 500: 8,500 kN/m | HS 600: 10,200 kN/m | HS 800: 13,600 kN/m | HS 1000: 17,000 kN/m | HS 1200: 20,400 kN/m

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Secugrid^® HS geogrid projects: embankment and MSE wall case studies

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Frequently asked questions

Secugrid^® HS is a high-strength geogrid for reinforcement of embankments over soft soil. HS stands for High Strength. Nominal tensile strengths range from 400 to 1,200 kN/m in longitudinal direction (DIN EN ISO 10319). The HS series uses high-tenacity PET filaments with extruded PE protective coating and welded junctions. It is specified when standard Secugrid^® grades (40 to 400 kN/m) do not provide sufficient reinforcement capacity to meet the required long-term design strength.

Secugrid^® HS pricing depends on project quantity, selected grade, and delivery location. For a project-specific quotation contact Naue at info@naue.com or use the request form below.

Standard Secugrid^® covers nominal tensile strengths from 20/20 (biaxial) to 400/40 kN/m (uniaxial). Secugrid^® HS starts at 400 kN/m and reaches 1,200 kN/m, covering the ultra-high reinforcement range. The standard Secugrid product range is made from extruded monolithic bars, whereas Secugrid HS is made from high-tenacity PET filaments with PE protective coating and welded junctions.

Embankments on soft soils must meet strict SLS deformation limits. On soft soils, strains remain low; geogrids with low tensile stiffness mobilise insufficient tensile resistance force. High stiffness at 1% strain activates reinforcement early, controlling settlement and lateral spreading before peak strength is reached.

All six Secugrid^® HS grades are supplied in roll dimensions of 4.75 m width x 50 m length.