Name: StrataBase Rigid Biaxial Geogrid
Brand: STRATA Geosystems
Availability: InStock

Question 1

What is StrataBase?

Accepted Answer

StrataBase is a STRATA Geosystems extruded polypropylene rigid biaxial geogrid. It functions as structural reinforcement within paved and unpaved road sections, and at the base of embankments on weak soils, through superior junction strength and interlocking aperture stability. Unlike knitted polyester geogrids (StrataGrid family), biaxial geogrids are extruded from polypropylene plate stock with punched apertures, producing rigid junctions that interlock with granular fill. Uniform high tensile strength in two orthogonal directions reinforces the granular layer above and confines the subgrade below.

Question 2

How does StrataBase work?

Accepted Answer

Two principal mechanisms. (1) Aperture interlock with granular base material: aggregate particles partially penetrate the apertures and lock against the rigid ribs, transferring load from the granular layer into the geogrid plane through frictional and mechanical interlock. (2) Membrane reinforcement: high tensile modulus resists tension developed under wheel loading, distributing concentrated loads across a larger footprint and reducing stress on the underlying subgrade. The combined effect allows substantial reduction in granular base thickness (typically 25-50 percent), extends pavement maintenance cycles, and supports trafficking over otherwise unusable weak subgrade. When placed at the base of an embankment, StrataBase sustains catenary tension under embankment self-weight plus loading, allowing construction over weak foundation.

Question 3

Where does StrataBase apply?

Accepted Answer

Eight primary Malaysian applications. (1) Road and railway embankments over weak soils as an option to expensive soil-stabilisation or replacement. (2) Highways with challenging maintenance cycles requiring low operational cost. (3) Airport runways, aprons, taxiways. (4) Parking lots in industrial and commercial facilities including truck and tanker terminals. (5) Construction laydown areas and container terminals, particularly on reclaimed marshland. (6) Haul road stabilisation at mines, oil fields, construction sites. (7) Basal reinforcement for industrial tanks, oil terminals, petrochemical hardstanding. (8) Ballast and sub-ballast stabilisation on railway track bed. The Malaysian buyer profile spans JKR, LLM, KKR, KTMB, Penang Port, Westports, Northport, federal and state authorities, plus private industrial developers.

Question 4

What does StrataBase save on a project?

Accepted Answer

Three documented project savings. (1) Granular base thickness reduction: typically 25-50 percent reduction in thickness of the granular sub-base or base course while maintaining or exceeding equivalent unreinforced design CBR. Cost saving on aggregate, transport, and placement. (2) Subgrade improvement avoidance: where the underlying soil would otherwise require import-replacement, lime stabilisation, or vertical drains plus consolidation period, StrataBase plus reduced granular thickness may eliminate the need entirely for low-criticality projects. Direct construction time and capital cost saving. (3) Extended maintenance cycles: the reinforced base reduces stress on subgrade and extends the structural life of the pavement above, reducing through-life maintenance cost. The combined economic case is strong for projects on weak Malaysian residual soils, marsh and reclaimed land, and remote highway corridors with expensive aggregate haul.

Question 5

How does StrataBase compare with StrataGrid (uniaxial PET)?

Accepted Answer

Different products for different applications. StrataBase is a rigid extruded polypropylene biaxial geogrid for horizontal applications: under road base, under embankment fill, under railway ballast, under industrial hardstanding. Its strength is in the rigid junction and aperture interlock with granular fill. StrataGrid (uniaxial PET, see /stratagrid/) is a flexible knitted polyester geogrid for vertical applications: MSE wall reinforcement layers, reinforced soil slope (RSS) layers, basal reinforcement at MSE wall base. Its strength is in the high-tensile uniaxial fibre and long-term creep performance. Many Malaysian projects use both: StrataBase under the road platform plus StrataGrid in the retaining wall behind. Selection per application; see also StrataGrid Biaxial in the catalog for the knitted biaxial variant.

Question 6

How is StrataBase installed?

Accepted Answer

Standard sequence. (1) Subgrade preparation: clear and level the subgrade to design level, remove unsuitable material in localised soft spots. (2) Roll out StrataBase in the design direction with overlaps per specification (typically 300-500 mm on weak subgrade, lower on competent ground). (3) Anchor at edges as required. (4) Place first granular layer directly over StrataBase, typically by dumping at the back of the advancing fill (not directly on the geogrid) and pushing forward. (5) Compact the granular layer per pavement specification. (6) Continue with subsequent layers per design. The installation is fully compatible with standard road construction plant and crew with brief STRATA installation orientation.

Question 7

How do I get StrataBase for my Malaysian project?

Accepted Answer

Three engagement routes via Starwall Sdn Bhd (sole STRATA Geosystems Asia distributor in Malaysia, same ownership group as Infraconcrete). (1) Material supply only: direct purchase through Starwall with mill certificate and batch traceability. (2) Supply plus design support: STRATA technical desk plus Infraconcrete engineering desk on specification, layout, BoQ. (3) Supply plus install: combined contract with Infraconcrete CIDB G7. WhatsApp +60 16-428 1214 with project location, subgrade CBR if known, granular base specification, target roll quantity for same-day response.

Mechanism	Effect
Aperture interlock with granular fill	Aggregate particles partially penetrate the rigid apertures and lock against the ribs, transferring load from the granular layer into the geogrid plane through frictional and mechanical interlock.
Membrane tension reinforcement	High tensile modulus in two orthogonal directions resists tension under wheel or embankment loading, distributing concentrated load across a larger footprint and reducing stress on the underlying subgrade.
Catenary support at embankment base	When placed at the base of an earth embankment over weak foundation, StrataBase sustains catenary tension under embankment self-weight plus loading, allowing construction without prior subgrade improvement.

Application	Profile
Road and railway embankments over weak soils	Alternative to expensive and time-consuming soil stabilisation or soil replacement. Allows construction over residual soil, marsh, soft clay foundations.
Highway maintenance cycles	Reduces granular base thickness, extends through-life pavement maintenance, reduces operational cost.
Airport runways, aprons, taxiways	Reinforced base supporting heavy aircraft loading.
Parking lots, industrial and commercial	Truck and tanker terminals, container yards, industrial hardstanding.
Construction laydown areas, container terminals	Particularly on reclaimed marsh land where subgrade improvement would be prohibitive.
Haul road stabilisation	Mines, oil fields, construction sites. Tolerates heavy mining and construction traffic.
Industrial tank basal reinforcement	Petrochemical oil terminals, marsh tanks, water reservoirs.
Railway ballast and sub-ballast stabilisation	Track bed reinforcement reducing ballast attrition and extending track maintenance cycle.

Property	StrataBase	StrataGrid (uniaxial PET)
Manufacturing	Extruded polypropylene plate with punched apertures	Knitted polyester yarn with proprietary coating
Junction	Rigid integral junction (single-piece extrusion)	Knitted intersection (flexible)
Direction	Biaxial (two orthogonal directions, equal strength)	Uniaxial (single direction primary strength)
Application orientation	Horizontal (under roads, under embankments, under hardstanding)	Vertical (in MSE walls, in reinforced soil slopes)
Reinforcement mechanism	Aperture interlock + membrane tension	Membrane tension along reinforcement length
Design life	Per project specification under granular cover	Over 100 years per STRATA technical data

StrataBase biaxial geogrid in Malaysia.

Two reinforcement mechanisms.

Where StrataBase is the right answer.

What it saves.

Different products. Different applications.

Related references.

StrataBase brochure (PDF)

STRATA products catalog

StrataGrid (uniaxial PET)

SGA-C asphalt reinforcement

StrataDrain PVD

StrataTex ST non-woven

CIDB G7 + STRATA distributor

Geogrid hub

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