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Read a Great Article From The Frontiersman Palmer AK

Volunteers install 400 ft. of Geoblock to help preserve the trail and protect ...
 

Read a Great Article From Kodiak Daily Mirror - Kodiak AK

Volunteers, locals make headway on maintenance of historic Native ...
 

Read a Great Article From Land & Water

Hard Trails in Alaska ... Responding to ATV Impacts on the Last Frontier
 

Read a Great Article From Kodiak Daily Mirror - Kodiak AK

Volunteer team plugs away at enhancement of popular trail from ...
 

Alaska Quartz Creek Trail Hardening Project

Quartz Creek Trail, White Mountains National Recreation Area, Alaska (WMNRA)

Read a Great Case Study by Presto Products Company

Alaska Dept. of Fish and Game Employs Geoblock® Trail Hardening System For Degraded Trails Palmer Hay Flats State Game Refuge, Alaska
 

Read a Great Article In The Anchorage Daily News About

Managing ATVs High-tech trail mats may help reduce conflicts
 

Read a Great Article In The Anchorage Daily News About

Mountain Bikers Mend Trail With Geoblock
 

Read a Great Article In GFR - Engineering Solutions March 2003 Issue

Hardening A Recreational Trail Without Sacrificing Vegetation

Geoblock® Porous Pavement System

GEOBLOCK WAREHOUSE INVENTORY SALE!

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CUSTOMER LITERATURE REQUESTS

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Geooblock: A System with Integrity
Geoblock® Standard 5150 (GB 5150) and the Geoblock® Porous Pavement Systems are a series of interlocking, polyethylene paving units designed to provide superior load support and turf protection for emergency and utility access lanes, auxiliary parking, golf cart pathways, trails, and other high-use application areas. The Geoblock® system provides vehicular and pedestrian load support while protecting the grass from the harmful effects of traffic. The Geoblock system covers a larger surface area per unit .5m x 1.0m x 50mm (20" x 40" x 2 inch Nominal), reducing costs and increasing ease of installation. The system's four-sided tabular, interlocking joint design aids in pattern layout and transfers shear loads from block to block. 

While some talk about strength per square foot, the structural integrity of the Geoblock® system is built in. The system features a four-sided tabular, interlocking block design that provides superior load-bearing performance and performance and layout design and construction flexibility. The recommended staggered placement (bricklayer’s pattern) of the individual Geoblock units further increases the system’s load distribution capabilities and maximizes the number of adjacent units used to effectively spread concentrated wheel loads over the largest possible area.

Geoblock & Geoblock5150  vs.  Rolled Ring Competitors Product



 

Click here for GeoBlock component specifications and configuration examples.

See how Geoblock® can help you reach your US Green Building Council (USGBC) LEED Credits confirmation goals.

Geoblock Applications
From fire access lanes to hiking trails to ATV trails, parking areas, to golf cart paths, the Geoblock® system improves both the usefulness and aesthetics of an outdoor environment:

 

 

 

 

Emergency and utility access lanes, Auxiliary parking areas, Pedestrian walkways, ATV trails and wheelchair access ways, Approaches to monuments, statues and fountains Golf cart path shoulders and aprons, Driveways, driveway shoulders and medians. Geoblock® Porous Pavement Fire Access Lane System Put to the Test [1994].

See Fire Access Lane Case Studies The City of Kentwood, Michigan & AT&T Corporate Center, Basking Ridge, New Jersey.

Additional Case Histories Project-specific design, construction and performance case histories for the Geoblock® system.


Managing Degraded Off-Highway Vehicle Trails in Wet, Unstable, and Sensitive Environments:
 
Trail hardening should be considered under the following conditions:

Existing trail impacts are causing or are projected to cause unacceptable onsite or offsite impacts, and More suitable alternative trail locations are not available, or Alternative trail locations are not environmentally acceptable or economically feasible.

Trail hardening provides the following benefits:

Defines a single trail alignment for vehicle travel.
Stabilizes surface soil conditions along the hardened trail section.
Provides a stable, durable trail surface for OHV traffic.
Halts trail widening and the development of braided trail sections.
Allows formerly used trail alignments to naturally stabilize and re-vegetate.
May provide for vegetation growth (or re-growth) within the hardened trail surface that helps to reduce visual impacts, maximize site stability and increase site productivity.

Trail hardening seeks to improve trail surfaces by one of three methods:

Replacing or capping unsuitable surface soils.
Reinforcing or augmenting existing soil structure.
Providing a 'wear and carry' surface over unsuitable soils."


 

Palmer Hayflats Geoblock Porous Pavement System Application

The Geoblock® product was one of a variety of materials tested by the NPS and analyzed at a trail segment during the summer of 1999. Based on test results, 800 ft of Geoblock hardening trail was installed in 2000. Palmer AK Hay Flats Project

 

 

Cottonwood Creek Trail Head Geoblock Installation  Palmer Hay Flats State Game Refuge 400 foot extension. Installed in 2013. Read full article here.

Online copy of "Managing Degraded Off-Highway Vehicle Trails in Wet, Unstable, and Sensitive Environments:" here.



Wrangell-St. Elias National Park and Preserve Releases Plan To Repair ORV Trails

“This is totally awesome news with a big thank you to the Park Service. Finally, these ORV trails will be improved for local folks who use these trails for hunting, fishing, berry-picking, and access to their remote cabins,” said NPCA Alaska Sr. Regional Director Jim Stratton. “Another benefit of this plan is that the Wrangell-St. Elias hiking trail system will be expanded for all park visitors, creating new places to explore on foot while enjoying our country’s largest national park.”

Read The Full Article Here (PDF)


 
   Tales from the tundra (Kwigillinook, Alaska)

 

The Feb/March issue of Geosynthetics magazine features the article, Tales from the tundra

The article highlights advantages of the GEOTERRA system that allowed it to meet the project criteria:
 
  1. Can support all-terrain vehicles over soft & uneven ground
  2. Allows vegetative growth through the open design
  3. Provides support even when unfilled

     

Read the Full Article Here (or in PDF Format Here)

 
 
 

PDF Format Here


The Denali Commission met Dec 12, 2007 to review the Rural Road project nominations, including the Hooper Bay nomination. 
The Hooper Bay project was selected. The Denali Commission will work with Federal Highway and NRCS engineers to try to develop a
TRoad cook-book with ATV mini road (Troad) standards accepted for construction projects and access to federal highway funding to do so. 

The Alaska NPS Rivers, Trails and Conservation Assistance Program helped to coordinate an ATV Trail Hardening Project with Sea Lion Corp in Hooper Bay Alaska.  The NPS does not endorse other agencies or organizations, their views, products or services - Video, Picture & Links with Permission from NPS.


Trail helps heal Alaska Native hunting grounds

Read the Full Article: Trails helps heal Alaska Native Hunting Grounds
PDF Format: http://www.geocheminc.com/pdf/Trail_Helps_Alaska.pdf

Hooper Bay ATV Trail Hardening Video of Installed Geoblock Porous Pavement System
 
 


 


Bethel Geoblock Porous Pavement System Demo Application

 

The Alaska NPS Rivers, Trails and Conservation Assistance Program helped to coordinate an ATV Trail Hardening Demonstration Project in Bethel.  The NPS does not endorse other agencies or organizations, their views, products or services - Pictures with Permission from NPS.

Nome Alaska Geoblock Porous Pavement System Application Slideshow Presentation

White Mountains Geoblock Porous Pavement System Application

  • White Mountains National Recreation Area, Alaska: Quartz Creek Trail, White Mountains National Recreation Area, Alaska (WMNRA)


     

Flexible Structural Bridge
The Geoblock® system creates a flexible structural bridge within the topsoil layer, promoting the vigorous growth of turf grass while protecting turf from the harmful effects of vehicular and pedestrian traffic. The Geoblock® Porous Pavement System is a series of interlocking blocks designed to offer turf protection and load support in areas used by heavy vehicles.  The blocks create a flexible structural bridge system within the topsoil layer to support and distribute concentrated loads.


   

Geoblock® Porous Pavement System

The Geoblock® system is comprised of four major components:
1) The Geoblock® unit, 2) the engineered base for support, 3) the selected topsoil infill, and 4) the selected vegetation.

Both the Geoblock® unit and the base support soil work together to support the imposed loading, while the Geoblock® unit and the topsoil contribute to the vegetative support. Other components may include a geosynthetic separation / reinforcement layer, sub-drain components, and topsoil additives, which enhance vegetative growth.

Click here for GeoBlock component specifications and configuration examples.

Geoblock® & GeoPave System Usage Guideline

                                                   DESIGN GUIDELINE

Depth of Engineered Base Recommendation: (Imperial)

GEOBLOCK®5150

GEOBLOCK®

GEOPAVE   

GEOPAVE

LOAD DESCRIPTION

TYPICAL MAXIMUM TIRE
PRESSURE

GROSS VEHICLE LOADS

VEGETATED SURFACES

Topsoil In fill &
Topsoil/Aggregate Base

VEGETATED SURFACES

Topsoil Infill &
Topsoil/Aggregate Base

AGGREGATE SURFACES
Aggregate Infill & Base

VEGETATED SURFACES

Topsoil/Aggregate Infill &
Topsoil/Aggregate Base

CBR1,2 2 – 4

CBR1 > 4

CBR1,2 2 – 4

CBR1 > 4

CBR1,2 2 – 4

CBR1 > 4

CBR1,2 2 – 4

CBR1 > 4

HEAVY FIRE TRUCK & H-20 LOADING

Typical 110 psi 80,000 lb

6 in

4 in

14 in

10 in

6 in

6 in

Not
Recommended

Not
Recommended

Infrequent Passes

Infrequent Passes

Normal Traffic

Single axle loadings of 145 kN, tandem axle loadings of 220 kN.

LIGHT FIRE TRUCK & H-15 LOADING

Typical 85 psi 60,000 lb

4 in

2 in

10 in

6-10 in

6 in

4 in

Not
Recommended

Not
Recommended

Infrequent Passes

Infrequent Passes

Normal Traffic

Single axle loadings of 110 kN.

UTILITY & DELIVERY TRUCK & H-10 LOADING

Typical 60 psi 40,000 lb

2 in

2 in

6-10 in

4-8 in

4 in

2 in

4 in

2 in

Infrequent Passes

Infrequent Passes

Normal Traffic

Infrequent Passes

Single axle loadings of 75 kN.

CARS & PICK-UP TRUCK ACCESS

Typical 45 psi 8,000 lb

None

None

4-8 in

2-4 in

2 in

None3

2 in

None3

Occasional Passes

Occasional Passes

Normal Traffic

Occasional Passes

Single axle loadings of 18 kN.

TRAIL USE: SURFACE STABLIZATION

<1,000 lb

None

None

2-4 in

0-2 in

None

None

None

None

Loading for ATVs, golf carts, campers, boats, equestrian, motorcycle, bicycle, pedestrian, wheelchairs.

1 CBR is the abbreviation for California Bearing Ratio. Methods for determining CBR vary from more sophisticated laboratory methods to simple field identification methods that use hand manipulation of the soil. If other-than-CBR soil strength values exist, use available correlation charts to relate the value to CBR.

2 For CBR <2, contact Presto Products Company for recommendations.

3 A minimum of 2 inches of aggregate base should be placed below the GeoPave units as a drainage layer and an infiltration storage area. Greater depth may be required depending upon design rainfall requirements and subbase permeability.

ALL DESIGNS SHOULD BE CHECKED BY A CERTIFIED ENGINEER.

 

 


Recommended Topsoil:
Suitable topsoil should be pulverized prior to filling the Geoblock® cells and contain sufficient organic content to support vegetative growth. Topsoil such as sandy loam is recommended. Clay and clay loam materials are considered unacceptable.

Recommended Engineered Base: Vegetated Systems
A recommended ‘engineered base’ consisting of clear-stone / crushed rock having an AASHTO #5 designation blended with topsoil will promote vegetative growth and provide required structural support. The aggregate portion shall have particles ranging in size from 9.5 to 25 mm (0.375 to 1.0 in) with a D50 of 13 mm (0.5 in). The percentage void-space when compacted shall be at least 30%. Topsoil, equal to but not greater than the aggregate void percentage, shall be added and blended prior to placement. The mixture shall be compacted to a density that will provide a minimum California Bearing Ratio of 7%. Under some conditions, a geotextile separation layer may be required between the natural ground and the ‘engineered base’.

Recommended Engineered Base: Non-Vegetated Systems
A recommended ‘engineered base’ for non-vegetated porous pavement systems shall be a well-graded aggregate with a fines content less than 10%. The aggregate shall be compacted to a density that will produce a California Bearing Ratio (CBR) of 7% minimum. After compaction, the surface shall be uniform with no protrusions from larger aggregate particles.

[Contact Us!] for design assistance, specifications and/or technical field support and representation.

GeoCHEM offers assistance to anyone interested in evaluating, designing, building or purchasing a Geoblock® porous pavement system.  You may access these services by [contacting us].  GeoCHEM reserves the right to withhold any information from any individual or company.

THE LINKS BELOW MAY REQUIRE ADOBE READER TO VIEW THEM.  CLICK ON THE "GET ADOBE READER" BUTTON BELOW TO DOWNLOAD A FREE COPY IF NEEDED

Working with the Environment
In many cities, current storm water management systems are pushed beyond their capacities by run-off from traditional hard surfaces. With over 87% open area at the surface, the Geoblock® system offers a permeable solution. The Geoblock® design allows water to percolate into the ground through drain holes in the bottom of the units, decreasing storm water run-off and allowing natural groundwater replenishment. Under rainfall simulation of 64 mm/hour (2.5 inches), the run-off coefficient for the Geoblock® system is 1.5%.  The Geoblock® units are manufactured from up to 100% recycled polyethylene and are inert to common chemicals, will not absorb moisture and are unaffected by freeze-thaw cycles.

 

Geoblock Technical Specifications 

Geoblock® General Brochures/Case Histories

Geoblock® General Overview An illustrative overview of the Geoblock porous pavement system.
Case Histories Project-specific design, construction and performance case histories for the Geoblock system.
Geoblock® Design and Construction Tools
Geoblock®5150 Design and Construction Overview

Geoblock® Design and Installation Overview

A document tool containing the following design and construction information for the Geoblock system:

  • Load Information, Base Recommendations and Design Details 
  • Material Specification
  • AutoCAD® Drawings
  • Illustrated Set of Installation Guidelines
  • Time/Cost Worksheet to Calculate Installed Costs
  • Installation Performance Specification
Geoblock®5150 CSI-format Product Specification

Geoblock CSI-format Product Specification

A comprehensive product specification in CSI-format based on the Presto Geoblock material specification.
   

Presto Geosystems SPECMaker®
Specification Development Tool

ARCAT's SpecWizard Program Customized Geoblock® Specifications

 

 

1 SPECMaker®
Presto's SPECMaker®
Specification Development Tool

The SPECMaker® Specification Development Tool lets you develop complete material and construction specifications specific to the application and project details. Create Customized Geoblock® Specifications

2   ARCAT's SpecWizard™ Program


ARCAT's SpecWizard Program Customized Geoblock® Specifications
 

Submit Geoblock and/or Geoweb Project Information
The project information will be placed in Presto's Project Library as reference and will be considered for case studies and/or magazine editorials.  Submit Project Information

Presto Geosystems Video Case Studies

Geoblock Porous Pavement System Case Studies

Geoblock®Fire Access Lanes

ATV/OHM Trail-Hardening

Grass Steps

Submit Geoblock and/or Geoweb Project Information
The project information will be placed in our Project Library as reference and will be considered for case studies and/or magazine editorials.  Submit Project Information



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Main Phone: 907-562-5755 ~ Toll Free: 800-490-5320
Washington State Sales: 206-774-8777 ~ Fax: 206-219-3740

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