Harland Geo
RUEN

Reinforced Soil Structures

MODULAR RETAINING WALL

Modular facing units, interlocked geogrid, compacted fill and drainage work as one structure.

DISCUSS YOUR PROJECTSYSTEM BUILD-UP
Completed modular block retaining wall on a client project, running alongside a grassed embankment.
SYSTEM BUILD-UP

TYPICAL SECTION · MODULAR REINFORCED SOIL WALL

Retaining wall of precast modular units with geogrid cast into the unit, backed by a reinforced soil mass.

PRECAST MODULAR FACING

face batter 1 : 0.05

PRIMARY REINFORCEMENT

L = 4.0 m · spacing 0.5 m

2 LAYERS HG-T GEOGRID

full width under pavement

DRAINAGE LAYER

500 mm crushed stone

STONE CUSHION

0.6 m · 2 HG-T layers

HLG-F-03 · TYPICAL SECTION · MODULAR REINFORCED SOIL WALL FOUNDATION BEARING CAPACITY ≥ 180 kPa AXIS H = 9.0 m ≥ 1.0 m 4.0 m A 1 2 3 4 5 6 7 8 1PRECAST MODULAR FACINGface batter 1 : 0.05 2PRIMARY REINFORCEMENTL = 4.0 m · spacing 0.5 m 3SECONDARY REINFORCEMENTL = 2.0 m 42 LAYERS HG-T GEOGRIDfull width under pavement 5PAVEMENT STRUCTUREcrossfall 2.0 % 6EMBANKMENT SLOPE1 : 1.50 7DRAINAGE LAYER500 mm crushed stone 8STONE CUSHION0.6 m · 2 HG-T layers A · MODULE-TO-GEOGRID CONNECTION 66 cm 25 cm A1CAST-IN-PLACE CAP BEAM A2GEOGRID PRE-EMBEDDEDin the module (= ②) A3CONNECTOR BAR A4C30 MODULE66 × 25 cm (= ①) A5STRIP FOOTINGC30 concrete Type B modules carry the pre-embedded geogrid; type A do not. TYPICAL SECTION · MODULAR REINFORCED SOIL WALLHalf of a symmetrical section · wall height H = 9.0 m · chainage and borehole numbers removedHLG · F-03 LEGEND Primary reinforcement Secondary reinforcement Reinforced fill Crushed stone · drainage and cushion Foundation soil C30 concrete Section redrawn from the construction drawing of a completed project; chainage, borehole numbers and third-party product designations removed. Wall height, reinforcement length and spacing, drainage detailing and foundation requirements are determined by project-specific design. A1 A2 A3 A4 A5

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HLG-F-03 · TYPICAL SECTION · MODULAR REINFORCED SOIL WALL MODULAR REINFORCED SOIL WALL · H = 9.0 m HLG · F-03 FOUNDATION BEARING CAPACITY ≥ 180 kPa AXIS H = 9.0 m ≥ 1.0 m 4.0 m A 1 2 3 4 5 1 PRECAST MODULAR FACING face batter 1 : 0.05 2 PRIMARY REINFORCEMENT L = 4.0 m · spacing 0.5 m 3 2 LAYERS HG-T GEOGRID full width under pavement 4 DRAINAGE LAYER 500 mm crushed stone 5 STONE CUSHION 0.6 m · 2 HG-T layers DETAIL A — SEE SHEET HLG · F-03a Redrawn from the project construction drawing; chainage, borehole numbers and third-party designations removed.
HLG-F-03a · A · MODULE-TO-GEOGRID CONNECTION MODULE-TO-GEOGRID CONNECTION DETAIL HLG · F-03a 66 cm 25 cm A1 A2 A3 A4 A5 A1 CAST-IN-PLACE CAP BEAM A2 GEOGRID PRE-EMBEDDED in the module (= ②) A3 CONNECTOR BAR A4 C30 MODULE 66 × 25 cm (= ①) A5 STRIP FOOTING C30 concrete Type B modules carry the pre-embedded geogrid; type A do not. Module and connection dimensions are set by project design.
HLG · F-03Half of a symmetrical section · wall height H = 9.0 m · chainage and borehole numbers removed

SYSTEM CAPABILITY

The table below sets out the typical capability of the system and the corresponding values recorded on a completed project.

PARAMETERSYSTEM CAPABILITYCOMPLETED PROJECT
DESIGN FLEXIBILITYSYSTEM CAPABILITYup to 1V:0.02Hfacing batterCOMPLETED PROJECT1 : 0.05
WALL HEIGHTSYSTEM CAPABILITYby designset by loads, geometry and soil characteristicsCOMPLETED PROJECTH = 9.0 membedment ≥ 1.0 m
REINFORCEMENTSYSTEM CAPABILITYHG-U geogridcast into the facing unitCOMPLETED PROJECTL = 4.0 m0.5 m spacing

Maximum wall batter (vertical to horizontal) is site specific and subject to design conditions including loads, geometry, soil characteristics, reinforcement selection, and governing codes. Engineering evaluation required.

Wall height, reinforcement length and spacing, drainage detailing and foundation requirements are determined by project-specific design.

Completed modular block retaining wall on a client project, running alongside a grassed embankment.
Client project

Reinforced Soil Structures

Reinforced soil walls and slopes: reinforcement design, facing systems and construction technical support.

Vegetated Reinforced Slope

Reinforced soil slope with a vegetated face: layered reinforcement, drainage and protective mesh.

Steel Mesh Faced Reinforced Soil

Reinforced soil structure with steel mesh facing panels and rock fill.

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