Design of Soft Soil Stabilization with Maccaferri EB Geogrid Serie

GO INPUT DATA AMERICAN SYSTEM

GO INPUT DATA SI SYSTEM

Welcome to SoilStable a simplified Excel® worksheet for the design of soil stabilization with and without Maccaferri GEOGRID.

For additional information, please refer to Maccaferri technical note on Soil Stabilization

Maccaferri Inc.10303 Governor Lane BoulevardWilliamsport, MD 21795-3116Tel: (301) 223-6910Fax: (301) 223-6134www.maccaferri-usa.com

AMERICAN SYSTEM INPUT DATA

SINGLE AXLE (single or dual wheel)

Input data assigned CBR OR Input data assigned Cu

Subgrade CBR = 3 psi

370,000 lb lb

Tire Inflation Pressure p = 200 Psi Tire Inflation Pressure p = Psi

TANDEM AXLE

Input data assigned CBR OR Input data assigned Cu

Subgrade CBR = a= in psi a= in

lb b= in lb b= in

Subgrade Cu =

Axle Load Paxis = Axle Load Paxis =

Subgrade Cu =

Axle Load Paxis = Axle Load Paxis =

CALCULATEGO TO START

AMERICAN SYSTEM OUTPUT DATA Hu = thickness of aggregate without geogridHr = thickness of aggregate with Maccaferri geogrid

SINGLE AXLE (single or dual wheel)

OUTPUT data assigned CBR OUTPUT data assigned Cu

Hu = 42.21 in Hu = in

Hr = 26.70 in Hr = in

15.51 in in

TANDEM AXLE

OUTPUT data assigned CBR OUTPUT data assigned Cu

Hu = in Hu = in

Hr = in Hr = in

in in

DH = Hu-Hr

DH = DH =

DH = DH =

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SI SYSTEM INPUT DATA

SINGLE AXLE (single or dual wheel)

Input data assigned CBR OR Input data assigned Cu

Subgrade CBR = 0.5 Cu = 15 kPa

89 kN Paxis = 89 kN

Tire Inflation Pressure p = 689.6 kPa p = 689.6 kPa

TANDEM AXLE

Input data assigned CBR OR Input data assigned Cu

Subgrade CBR = 0.5 a= 25.4 cm 15 kPa a= 25.4 cm

89 kN b= 25.4 cm 89 kN b= 25.4 cm

Axle Load Paxis =

Subgrade Cu =

Axle Load Paxis = Axle Load Paxis =

CALCULATEGO TO START

SI SYSTEM SI OUTPUT DATA Hu = thickness of aggregate whitout geogridHr = thickness of aggregate with Maccaferri geogrid

SINGL AXLE (single or dual wheel)

OUTPUT data assigned CBR OUTPUT data assigned Cu

Hu = 65.20 cm Hu = 65.20 cm

Hr = 45.01 cm Hr = 45.01 cm

20.19 cm 20.19 cm

TANDEM AXLE

OUTPUT data assigned CBR OUTPUT data assigned Cu

Hu = 65.20 cm Hu = 65.20 cm

Hr = 45.01 cm Hr = 45.01 cm

20.19 cm 20.19 cm

DH = Hu-Hr

DH = DH =

DH = DH =

GO BACK GEOGRIDS SPECIFICATIONS

Maccaferri Geogrids series is multilayer Geogrids consist of high strength extruded biaxially oriented polypropylene geogrids. The layers are rolled and stitched together without superimposing the meshes creating a Geogrid with random sized apertures designed to accommodate a variety of fill materials. The random aperture geometry, many tensile elements and multiple layers of the Geogrid enhance soil/Geogrid interaction.Maccaferri Geogrids greatly improve the geogrid interlocking capacity, distribute applied loads, and prevent localized shear failure.

Typical applications:- Soft soil stabilization - Base reinforcement - Embankments over weak soils - Working platforms - Haul roads

Maccaferri Geogrids Series

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EB2 Geogrid

EB3 Geogrid

Maccaferri Geogrids series is multilayer Geogrids consist of high strength extruded biaxially oriented polypropylene geogrids. The layers are rolled and stitched together without superimposing the meshes creating a Geogrid with random sized apertures designed to accommodate a variety of fill materials. The random aperture geometry, many tensile elements and multiple layers of the Geogrid enhance soil/Geogrid interaction.Maccaferri Geogrids greatly improve the geogrid interlocking capacity, distribute applied loads, and prevent localized shear failure.

Typical applications:- Soft soil stabilization - Base reinforcement - Embankments over weak soils - Working platforms - Haul roads

Maccaferri EB2MULTILAYER BI-ORIENTED GEOGRIDS

Maccaferri geogrid is composed of two layers of high strength extruded biaxially oriented polypropylenegeogrids. The layers are rolled and stitched together without superimposing the meshes creating a geogrid withrandom sized apertures designed to accommodate a variety of fill materials. The random aperture geometry,many tensile elements and multiple layers of the geogrid enhance soil/geogrid interaction.Maccaferri geogrid greatly improves the geogrid interlocking capacity, distributes applied loads, and prevents localized shear failure.Typical applications:- soft soil stabilization - base reinforcement - embankments over weak soils - working platforms - haul roads

MATERIAL TEST METHOD DATACHARACTERISTICS

STRUCTURE LAYERS OF BI-ORIENTED GEOGRIDSSEWN TOGETHER

POLYMER TYPE POLYPROPYLENECARBON BLACK CONTENT ASTM D4218 0.50%

TECHNICAL CHARACTERISTICS TEST METHOD UNIT EB2

TEST DIRECTION MD TDPEAK TENSILE STRENGTH GRI-GG1 lb/ft (kN/m) 925 (13.5) 1400 (20.5)TTURE INITIAL MODULUS IN USE GRI-GG1 lb/ft (kN/m) 15,508 (226.4) 24,667 (360.1)TRUE TENSILE STRENGTH at 2% STRAIN GRI-GG1 lb/ft (kN/m) 301 (4.4) 450 (6.57)TRUE TENSILE MODULUS at 2% STRAIN GRI-GG1 lb/ft (kN/m) 15,050 (220) 22,500 (328)TRUE TENSILE STRENGTH at 5% STRAIN GRI-GG1 lb/ft (kN/m) 616 (9.0) 920 (13.42)TENSILE MODULUS at 5% STRAIN GRI-GG1 lb/ft (kN/m) 12,320 (180) 18,400 (269)YIELD POINT ELONGATION GRI-GG1 % 12.0 11.0JUNCTION STRENGTH GRI-GG2 lb/ft (kN/m) 835 (12.2) 1315 (19.2)

DIMENSIONAL CHARACTERISTICS TEST METHOD UNIT EB2

NUMBER OF LAYERS - 2APERTURE SIZE - MD, TD in. (mm), in. (mm) 1.65 (42), 1.96 (50)OPEN AREA % 75

UNIT WEIGHT ASTM D 5261 6.4 (220)ROLL DIMENSIONS (WIDTH x LENGTH) ftxft (mxm) 12.5x328 (3.8x100)

ROLL AREA 455 (380)GROSS ROLL WEIGHT lb (kg) 217 (98.5)

NOTES:a) 95% lower confidence limit values, ISO 2602 d) Single layer dimension b) Typical value e) MD : machine direction (longitudinal to the roll)c) Tests performed using extensometers TD : transversal direction (across roll width)

Maccaferri Inc.10303 Governor Lane BoulevardWilliamsport, MD 21795-3116tel (301) 223-6910

oz/yd2 (g/m2)

yd2 (m2)

fax (301) 223-6134

geogrids. The layers are rolled and stitched together without superimposing the meshes creating a geogrid with

DATA

LAYERS OF BI-ORIENTED GEOGRIDSSEWN TOGETHERPOLYPROPYLENE

0.50%

EB2 Notes

TD1400 (20.5) a,c,e

24,667 (360.1) a,c,e450 (6.57) a,c,e

22,500 (328) a,c,e920 (13.42) a,c,e

18,400 (269) a,c,e11.0 b,c,e

1315 (19.2) a,e

EB2 Notes

21.65 (42), 1.96 (50) b,d,e

75 a

6.4 (220) b12.5x328 (3.8x100) b

455 (380) b217 (98.5) b

d) Single layer dimension e) MD : machine direction (longitudinal to the roll) TD : transversal direction (across roll width)

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Maccaferri EB3MULTILAYER BI-ORIENTED GEOGRIDS

Maccaferri EB3 geogrid is composed of three layers of high strength extruded biaxially oriented polypropylenemesh. The layers are rolled and stitched together without superimposing the meshes creating a geogrid withrandom sized apertures designed to accommodate a variety of fill materials. The random aperture geometry,many tensile elements and multiple layers of the geogrid enhance soil/geogrid interaction.Maccaferri EB3 geogrid greatly improves geogrid interlocking capacity, distributes applied loads, and prevents localized shear failure.Typical applications:- soft soil stabilization - base reinforcement - embankments over weak soils - working platforms - haul roads

MATERIAL TEST METHOD DATACHARACTERISTICS

STRUCTURE LAYERS OF BI-ORIENTED GEOGRIDSSEWN TOGETHER

POLYMER TYPE POLYPROPYLENECARBON BLACK CONTENT ASTM D4218 0.50%

TECHNICAL CHARACTERISTICS TEST METHOD UNIT EB3 TEST DIRECTION MD TD

PEAK TENSILE STRENGTH GRI-GG1 lb/ft (kN/m) 1370 (20.0) 2100 (30.7)TTURE INITIAL MODULUS IN USE GRI-GG1 lb/ft (kN/m) 32,962 (481.2) 44,700 (652.5)TENSILE STRENGTH at 2% STRAIN GRI-GG1 lb/ft (kN/m) 418 (6.1) 616 (9.0)TENSILE MODULUS at 2% STRAIN GRI-GG1 lb/ft (kN/m) 20,900 (305) 30,800 (450)TENSILE STRENGTH at 5% STRAIN GRI-GG1 lb/ft (kN/m) 925 (13.5) 1340 (19.6)TENSILE MODULUS at 5% STRAIN GRI-GG1 lb/ft (kN/m) 18,500 (270) 26,850 (392)YIELD POINT ELONGATION GRI-GG1 % 12.0 11.0JUNCTION STRENGTH GRI-GG2 lb/ft (kN/m) 1230 (18) 1970 (28.8)

DIMENSIONAL CHARACTERISTICS TEST METHOD UNIT EB3NUMBER OF LAYERS - 3APERTURE SIZE - MD, TD in. (mm), in. (mm) 1.65 (42), 1.96 (50)OPEN AREA % 70

UNIT WEIGHT ASTM D 5261 9.6 (330)ROLL DIMENSIONS (WIDTH x LENGTH) ftxft (mxm) 12.5x164 (3.8x50)

ROLL AREA 227 (190)GROSS ROLL WEIGHT lb (kg) 165.0 (75.0)

NOTES:a) 95% lower confidence limit values, ISO 2602 d) Single layer dimension b) Typical value e) MD : machine direction (longitudinal to the roll)c) Tests performed using extensometers TD : transversal direction (across roll width)

Maccaferri Inc.10303 Governor Lane BoulevardWilliamsport, MD 21795-3116tel (301) 223-6910

oz/yd2 (g/m2)

yd2 (m2)

fax (301) 223-6134

Maccaferri EB3 geogrid is composed of three layers of high strength extruded biaxially oriented polypropylenemesh. The layers are rolled and stitched together without superimposing the meshes creating a geogrid withrandom sized apertures designed to accommodate a variety of fill materials. The random aperture geometry,

Maccaferri EB3 geogrid greatly improves geogrid interlocking capacity, distributes applied loads, and prevents

DATA

LAYERS OF BI-ORIENTED GEOGRIDSSEWN TOGETHERPOLYPROPYLENE

0.50%

EB3 NotesTD

2100 (30.7) a,c,e44,700 (652.5) a,c,e

616 (9.0) a,c,e30,800 (450) a,c,e1340 (19.6) a,c,e

26,850 (392) a,c,e11.0 b,c,e

1970 (28.8) a,e

EB3 Notes3

1.65 (42), 1.96 (50) b,d,e70 a

9.6 (330) b12.5x164 (3.8x50) b

227 (190) b165.0 (75.0) b

e) MD : machine direction (longitudinal to the roll)

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