multi-layer geogrid Articles

  • Bearing Capacity of Strip Foundation on Geogrid-Reinforced Clay

    Laboratory model test results are presented for the ultimate bearing capacity of a strip foundation supported by a saturated clay layer reinforced by layers of geogrid. The tests were conducted in one type of clay. The average moisture content of the clay was varied, yielding varying undrained shear strengths. Laboratory tests were conducted to determine the critical nondimensional values for the ...


    By ASTM International

  • Ultimate Bearing Capacity of Rectangular Foundations on Geogrid-Reinforced Sand

    Model test results for the ultimate bearing capacity of rectangular surface foundations supported by geogrid-reinforced sand are presented. The tests were conducted using one type of sand at one relative density of compaction with only one type of geogrid. The length-to-width ratios of the model foundations were varied as 1, 2, 3, and 8. Based on the model test results, the maximum required ...


    By ASTM International

  • Construction of a beltway in Bremen progresses case study

    Geogrids secure embankment reinforcements The western bypass around Bremen is not scheduled for completion until about 2011. Section 1 of the second construction phase has been under construction since 2002. The 3.3 km long core stretch of A281 is construction section 2/1. Its most prominent structure will be a 127 m long cable-stayed bridge supported by 50 m high pylons to be built over the ...


    By NAUE GmbH & Co.KG

  • A grid for subgrade stability

    With research to back up quantifiable benefits and recognized design standards, the use of geogrids may be ready for wider acceptance among North American railroads. A product with a 20-year plus track record is rarely referred to as "new." However, this is a label those involved with geogrids find themselves tagged with when it comes to the prod¬uct's use on North American railroads. While ...


    By Tensar International

  • Commerce Park Giesen-Harsum-Hildesheim case study

    Building on an old dump The communities Giesen and Harsum along with the City of Hildesheim, Germany jointly planned the construction of a commerce park covering an area of 240ha. The section of the premises on which buildings were to be erected encompassed an area of 50ha. The only access road passed over a former garbage and building-trash landfill. Dumping in this area was ...


    By NAUE GmbH & Co.KG

  • Ämmässuo landfill, Finland case study

    Opened in 1987, the municipal landfill Ämmässuo in Finland extends over 50 ha, making it one of the largest in all of Scandinavia. Two test fields were set up to find a suitable solution for the surface sealing system and future slope reinforcement The structure of these fields consists of a mineral gas-drain layer, a mineral sealing layer, a geosynthetic clay liner, a protection ...


    By NAUE GmbH & Co.KG

  • Clemson road bridge case study

    Background The South Carolina Department of Transportation (SCDOT) needed to provide a right-of-way for an access road adjacent to a CSX Railroad line. The proposed Clemson Road Bridge overpass was a challenging project and SCDOT had three choices: Option 1: Construct a 1H:1V Reinforced Soil Slope (RSS) at the northern bridge abutment. Option 2: Lengthen the northern ...


    By Strata Systems, Inc.

  • Federal motorway A6 Mannheim-Heilbronn case study

    Stable RiStWag -construction guidelines for roadways in water preservation areas Included in the A6 federal motorway construction project lot Mannheim – Heilbronn/Weinsberg, AS Bad Rappenau – AS Neckarsulm is the widening of km 631+640 and km 641+060 to six lanes. This section is runs through a water preservation zone, type IIIa, protected under RiStWag. Because of this, a ...


    By NAUE GmbH & Co.KG

  • Pace properties case study

    Background Available property for development within the Interstate 285 perimeter in Atlanta is becoming increasingly scarce. A northwest portion of metropolitan Atlanta was becoming progressively more congested and sites previously considered too expensive or difficult to build upon were being targeted for development. The owners wanted to develop this site for a motel/suites ...


    By Strata Systems, Inc.

  • How Strata’s Microgrid reinforced a roadside slope and saved 30-percent in costs

    Challenge The City of Fairfield in Solano County, CA has many beautiful parks and trails enjoyed by residents year round. One of roadways stretching alongside one of these natural areas was threatened due to unstable soils and a failing slope. This posed safety concerns for the area. The roadway had a right of way to a state highway and the county and city were in need of a cost effective ...


    By Strata Systems, Inc.

  • Former MGP site required a sediment treatment & erosion protection solution case study

    Project: Collins Cove Shoreline Revetment & Sediment Cap Location: Beverly, MA Products: Organoclay Reactive Core Mat Triton Marine Mattresses by Tensar Background: The project is situated on a former manufactured gas plant (MGP) site located along the Collins Cove coast of Beverly, MA. ...


    By CETCO

  • Case study - Log storage handling yard

    The logging yard at Canfor’s Fort St. John mill is subject to the heaviest loading operations in the worst soil conditions. Saturated peat with a CBR Cat 988H loaders weighing more than 43,000 kg, heavy hauling trucks, and other mechanical equipment created heavy rutting in the soft soil. The logs, stockpiled in huge, 6-metre high stacks, suffered from large settlement, which further ...


    By PRS Geo-Technologies

  • Millstone Manor Parking Lot Stabilization - Case Study

    Shallow utilities won’t get in the way of our high strength woven geotextile’s ability to stabilize this parking lot. Millstone Manor, an apartment complex located right next to the Ogden River at the base of the Wasatch Mountains, had been having difficulty stabilizing their parking areas for years. Due to its proximity to a water source and resulting soil types, the CBR ...


    By Nilex

  • Donzi landfill expansion using stratagrid case study

    Background The Donzi Lane Landfill in Atlanta, GA had been in use since the 1970's for construction and demolition waste disposal. The site was nearing its capacity and additional landfill space was urgently needed due to the accelerating population growth and waste stream generated by development. Due to the high cost and long lead times for designing, permitting and constructing new ...


    By Strata Systems, Inc.

  • Road Over Sensitive Groundwater Areas - Case Study

    When constructing or extending new roads, the responsible designers and contractors are increasingly faced with the task of preventing soil contamination. Therefore, measures for the protection of the groundwater are necessary in more and more cases. The corresponding requirements and specifications for such measurements are regulated in the "guide-line for constructional measurements of roads in ...


    By NAUE GmbH & Co.KG

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