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Tensar BX1100 Geogrid

Tensar BX1100 Biaxial Geogrid - 12.5' x 328' Roll

$1,147.64


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SKU TENSAR-BX1100


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This product: 4100 sq ft / roll
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Base Stabilization Geogrid

Tensar BX1100 is a punched-and-drawn biaxial geogrid built to stabilize weak subgrades and strengthen aggregate bases.

Its stiff ribs and junctions interlock with crushed stone in both directions, confining the aggregate so it resists spreading under load. Placed at the subgrade-base interface, it raises the stiffness of the base layer, reduces rutting, and improves constructability over soft or variable soils.

Used on unpaved and temporary roads, permanent road bases, working platforms, and foundations, BX1100 is commonly specified where a Type 1 biaxial geogrid is called for. On many projects the added stiffness allows a thinner aggregate section while still meeting performance targets.

Square Feet / Roll: 4,100
Spec Sheet: BX1100 Specification Sheet
Installation Guide: Download Installation Guide

Frequently Asked Questions


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PRODUCT INFO:

  • Tensar BX Geogrids are created using precise blends of polypropylene, copolymers and additives to resist high, short-term dynamic loads or moderate loads over longer time periods.
  • BX Geogrids have been used for mechanical ground stabilization in over half a million projects worldwide, including roads, reinforced foundations and working platforms.

DOWNLOADS:

  • BX1100 Specification Sheet
  • BX1200 Specification Sheet
  • BX1300 Specification Sheet
  • BX1500 Specification Sheet
  • Download Installation Guide

TENSAR BIAXIAL GEOGRID SHIPPING TIME

Tensar geogrid orders by default ship next day (from GA) (M-F) if order is placed before 12:00 noon eastern time zone. Tensar Biaxial geogrid also ship from other regional warehouses depending on purchase location.

Transit times displayed in the map are listed in business days, are approximate and are specific to the Tensar line. The day that the order is shipped is not counted as a transit day.

Geogrid rolls ship via LTL freight. For expedited shipping rates please call:
(800) 748-5647


The transit times displayed on the map is for our free shipping option.

Tensar BX1100 Biaxial Geogrid: Professional Guide to Subgrade Improvement & Base Stabilization

Subgrade Improvement • Base Stabilization • Pavement Performance

Tensar BX1100 Biaxial Geogrid: A Professional Guide

Understand when to use BX1100, how biaxial geogrids work, and how to install them correctly—plus a real-world case study and clear answers to common specification questions.

  • Biaxial interlock & confinement improves layer stiffness
  • Helps reduce rutting and differential settlement
  • Enhances constructability on weak subgrades
  • Can enable aggregate/base savings (project-dependent)
Close-up of biaxial geogrid interlocked with crushed stone aggregate
Biaxial geogrid interlock: aggregate bears on ribs and seats into apertures.

BX1100: What It Is and When It Fits

Tensar BX1100 is a punched-and-drawn biaxial geogrid designed for soil/aggregate stabilization. Its ribs and junctions provide stiffness in two principal directions—improving bearing capacity, limiting lateral spread, and increasing the composite layer’s modulus under traffic.

  • Typical applications: unpaved temporary roads, permanent paved road bases, laydown/working platforms, foundations & slabs-on-grade.
  • Why it helps: interlock + confinement reduce rutting and soft spots, improving constructability and serviceability on weak or variable subgrades.

How Biaxial Geogrids Work

As stone is placed and compacted, particles seat into the geogrid apertures. Under load, the ribs and junctions mobilize tensile resistance that restrains particle movement. This boosts the layer’s resilient modulus and limits permanent deformation—observable in the field as reduced rutting and more uniform support.

Design cues
  • Place at subgrade–base interface
  • Match aperture size to aggregate gradation
  • Size lift thickness via CBR/Resilient Modulus & traffic
  • Use single or multiple layers as required
Expected outcomes*
  • Lower rut depths vs. unreinforced sections
  • Improved haulability after wet weather
  • Potential base savings for target performance
  • Faster, more reliable production on weak soils

*Actual results depend on soils, traffic, section design, and quality control.

BX1100 geogrid being rolled out and installed over prepared subgrade
Typical placement over prepared subgrade prior to aggregate base installation.
Roll of Tensar BX biaxial geogrid staged for installation
Stage rolls to minimize handling; keep sheets aligned and tension-free.

Selection & Spec Tips

  • Aggregate: well-graded, crushed stone that can seat into apertures; rounded, single-size gravels limit interlock.
  • Overlaps: commonly 1–3 ft depending on subgrade strength and seam orientation to traffic (follow the project specs/manufacturer guidance).
  • Placement: typically at the subgrade–base interface; very weak soils or heavy loads may warrant multiple layers within the base.
  • QC checks: alignment, overlap, wrinkle removal, and ensuring aggregate is fully seated into the grid before trafficking.

For current nominal properties, roll sizes, and submittal data, consult the latest Tensar BX1100 product literature.

Installation Best Practices (Step-by-Step)

  1. Prepare subgrade: strip organics, proof-roll, correct pumping zones, plane to grade with positive drainage.
  2. Lay geogrid: unroll square to alignment, remove wrinkles; secure as needed (pins/sandbags) to prevent wind uplift/bridging.
  3. Overlaps: follow plans; increase overlap where CBR is very low or where trafficking crosses seams.
  4. Place aggregate: cascade from the bucket; avoid driving directly on exposed grid.
  5. First lift & compaction: spread evenly (often 6–12" per design) and compact to specified density before opening to construction traffic.
  6. Verify: ensure stone is seated into apertures and surface is uniform before subsequent lifts.

Case Study: Stabilizing a Gravel Access Road on Low-CBR Silt

Setting: 0.6-mile gravel access road serving a light-industrial site; subgrade CBR ≈ 2–3; frequent rainfall.

Challenge: Early trafficking caused ruts >2" and pumping after storms. The initial design (12" base over separator) under-performed.

Solution: Install one layer of BX1100 at the subgrade–base interface with 2–3 ft overlaps; revise base to 8"; enforce bucket-cascade placement and lift-by-lift compaction.

Outcome: Rut depths reduced to <0.5" through multiple rain events; road opened to hauling without lane closures. The team reported improved production from a stiffer working platform and reduced aggregate vs. the original concept while meeting serviceability targets.

Results vary. Always verify with current geotechnical data, traffic projections, and manufacturer guidance.