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Alliance  |  SKU: NGG3030-04050
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Alliance Gator Grid 30-30 Biaxial Geogrid

$101.99
Size

Ships same day on weekday orders placed before the 14:00 ET cut-off.

Typically 1 to 5 business days by UPS, FedEx Ground or USPS. Enter your ZIP for your dates.

Request a pallet quoteHow much do I need?Call (856) 418-4895

Ships fromWilliamstown, NJ (our warehouse)Sold byPolymeric Sand StorePaymentSecure checkout by ShopifyReturnsSee our return policy
Type
Geogrid
Sizes
4 ft x 50 ft, 6 ft x 50 ft, 6 ft x 150 ft, 12 ft x 150 ft

About this item

  • 2,052 lbf per ft (30 kN/m) ultimate tensile, ASTM D6637, in both directions. Biaxial means the number applies whichever way you run it.
  • High-molecular-weight, high-tenacity polyester yarns woven in tension and PVC coated.
  • No memory. Alliance rates it to lie 100 percent flat when unrolled, so it does not curl back while you are placing aggregate.
  • Medium-height retaining walls, raised patio and staircase internal structure.
  • Also for subgrade stabilization and erosion control.
  • Four roll sizes from a 4x50 handroll to a 12x150 contractor roll.
See the full description and data sheets

Shipping, pick-up and returns

Orders ship from Williamstown, New Jersey by UPS, FedEx Ground or USPS; weekday orders placed before 2 PM Eastern go out the same day. Warehouse pick-ups (call first so we can pull your order) and drop-off returns Monday to Friday 8 to 5, Saturday 8 to noon.

Return and refund policy · Shipping policy

Alliance Gator Grid 30-30 Biaxial Geogrid Add to cart
  • Ships Same DayFrom our NJ warehouse
  • 30 kN/m Both Ways2,052 lbf per ft, ASTM D6637
  • No MemoryLies 100% flat when unrolled
  • Real Humans(856) 418-4895

Why Gator Grid 30-30?

Biaxial Geogrid, 2,052 lbf per ft in Both Directions

A block wall over about three feet is not held up by the blocks, it is held up by the reinforced soil behind them. Geogrid is what turns backfill into a structural mass.

Full description and specs
  • 2,052 lbf per ft (30 kN/m) ultimate tensile - Alliance Gator Grid 30-30 Biaxial Geogrid

    2,052 lbf per ft (30 kN/m) ultimate tensile

    ASTM D6637, in both directions. Biaxial means the number applies whichever way you run it.

  • High-molecular-weight, high-tenacity polyester yarns - Alliance Gator Grid 30-30 Biaxial Geogrid

    High-molecular-weight, high-tenacity polyester yarns

    Woven in tension and PVC coated.

  • No memory - Alliance Gator Grid 30-30 Biaxial Geogrid

    No memory

    Alliance rates it to lie 100 percent flat when unrolled, so it does not curl back while you are placing aggregate.

  • Medium-height retaining walls - Alliance Gator Grid 30-30 Biaxial Geogrid

    Medium-height retaining walls

    Raised patio and staircase internal structure.

How to Install Gator Grid 30-30

The short version. Always follow the Alliance data sheet.

  1. Step 1: Build to the engineered plan - Alliance Gator Grid 30-30 Biaxial Geogrid

    Build to the engineered plan

    Not to a rule of thumb. Grid spacing and embedment length come from the stamped design.

  2. Step 2: Lay the grid - Alliance Gator Grid 30-30 Biaxial Geogrid

    Lay the grid

    On the compacted layer at the elevation the plan calls for, running back into the fill.

  3. Step 3: Anchor and stretch it - Alliance Gator Grid 30-30 Biaxial Geogrid

    Anchor and stretch it

    So it is taut with no slack or waves before anything goes on top.

  4. Step 4: Place and compact the next aggregate layer - Alliance Gator Grid 30-30 Biaxial Geogrid

    Place and compact the next aggregate layer

    Then set the next course of block and repeat.

Watch installation videosTechnical data sheet (PDF)Alliance PDF, opens in a new tab

Test a small area first.

Description

Biaxial Geogrid, 2,052 lbf per ft in Both Directions

Gator Grid 30-30 is 30 kN/m ultimate tensile in both directions, woven high-tenacity polyester yarns, PVC coated, with no memory so it lies flat the moment you unroll it. For medium-height retaining walls, raised patios, staircases and subgrade stabilization.

Ships Same Day
From our NJ warehouse		 30 kN/m Both Ways
2,052 lbf per ft, ASTM D6637
No Memory
Lies 100% flat when unrolled		 Real Humans
(856) 418-4895

Why Contractors Ask for Gator Grid 30-30 by Name

A block wall over about three feet is not held up by the blocks, it is held up by the reinforced soil behind them. Geogrid is what turns backfill into a structural mass.

  • 2,052 lbf per ft (30 kN/m) ultimate tensile, ASTM D6637, in both directions. Biaxial means the number applies whichever way you run it.
  • High-molecular-weight, high-tenacity polyester yarns woven in tension and PVC coated.
  • No memory. Alliance rates it to lie 100 percent flat when unrolled, so it does not curl back while you are placing aggregate.
  • Medium-height retaining walls, raised patio and staircase internal structure.
  • Also for subgrade stabilization and erosion control.
  • Four roll sizes from a 4x50 handroll to a 12x150 contractor roll.

Gator Grid 30-30 Specifications

Ultimate tensile 2,052 lbf per ft (30 kN/m), both directions, ASTM D6637
Type Woven high-tenacity polyester yarn, PVC coated, biaxial
Roll sizes 4x50 (11.5 lb), 6x50 (17 lb), 6x150 (42.5 lb), 12x150 (90.5 lb)
Install Anchor and stretch before placing the next layer of aggregate and block

Where Gator Grid 30-30 Works

Alliance rates Gator Grid 30-30 for:

  • Medium-height retaining wall structure
  • Raised patio internal structure
  • Staircase internal structure
  • Subgrade stabilization
  • Erosion control and general landscape

Read This Before You Buy Geogrid (Straight From the Manufacturer)

Get an engineer. Alliance states plainly that soil composition varies by location, that global soil stability is not considered in their placement tables, and that a soil analysis must be done before starting any wall project.

Consult a qualified local engineer and obtain a stamped plan before construction and before establishing grid placement.

The label placement tables must not be used on multi-tiered walls, or where there is excess water runoff, seepage or springs, unless a qualified local engineer confirms it.

More grid than the label shows may be required. Alliance states their data sheet should not be construed as engineering advice, and neither should this page.

Not sure if your project qualifies? Call us at (856) 418-4895 before you order. We will give you a straight answer, even if the answer is that this is not the right product for your job.

How to Install Gator Grid 30-30

The full step by step guide is in the official documentation below. Here is the shape of the job:

  1. Build to the engineered plan, not to a rule of thumb. Grid spacing and embedment length come from the stamped design.
  2. Lay the grid on the compacted layer at the elevation the plan calls for, running back into the fill.
  3. Anchor and stretch it so it is taut with no slack or waves before anything goes on top.
  4. Place and compact the next aggregate layer, then set the next course of block and repeat.

30-30 or 50-50? Which Geogrid Grade

Both are biaxial polyester grids from the same family. The difference is strength and therefore what they are approved for:

  • Gator Grid 30-30, 30 kN/m each way. Medium-height walls, raised patios, staircases, subgrade stabilization. Available in a 4x50 handroll.
  • Gator Grid 50-50, 50 kN/m each way. High, single and multi-level engineered walls, steep-slope erosion control, roadway and parking structure. No small roll.
  • The honest answer is that your engineer picks this, not a website. If nobody has run the numbers on your wall, that is the thing to fix first.

Data sheets

The manufacturer's technical data sheet (coverage, joint width, cure and rain-safe times) and safety data sheet are collected in the TDS and SDS library. Every figure on this page comes from those sheets.

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Questions about this product

Ask a question ›
What sizes are available?
Size: 4 ft x 50 ft, 6 ft x 50 ft, 6 ft x 150 ft, 12 ft x 150 ft. The price shown is per 4 ft x 50 ft unless you pick another option.
When will it ship?
In-stock orders placed before 2:00 PM Eastern on a weekday ship the same day from our Williamstown, New Jersey warehouse by UPS or FedEx Ground. The cut-off is when the carriers start arriving; order after it, or on a weekend, and it ships the next business day. Just missed it? Call (856) 418-4895: if the carrier has not picked up yet we do our best to get it out the same day. The box above the Add to cart button shows the live countdown and an arrival estimate for your ZIP. Phones are answered 24/7; the warehouse itself is open for pick-ups and returns Monday to Friday 8 to 5 and Saturday 8 to noon, Eastern. For a pick-up, call first so we can pull your order.
Can I buy by the pallet?
Yes. Full pallets ship by freight truck, so we price the delivery for your address instead of guessing. Request a pallet quote or call (856) 418-4895 and we will call you back with a delivered price.
Where are the technical and safety data sheets?
The manufacturers' technical and safety data sheets are collected in the TDS and SDS library. Coverage, cure time and application temperatures on this page come from those sheets.
Is contractor or bulk pricing available?
No. One price for everyone: the price on the page is what contractors, landscapers and homeowners all pay. For full pallets, request a pallet quote and we will price the freight to your address.

Wall drainage and geogrid

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