GEOTECHNICS

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GEOTECHNICS

• TITLE SPECIFICATION FOR
• REINFORCED SOIL
• STRUCTURES.

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GROUP MEMBERS

• Mohd. Ayub Bin Abdul Ghani.
• Nik Suhaila Binti Nik Mohamad Ravi.
• Isabella Boy Setanis.

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SCOPE

• INTRODUCTION
• DESIGN
• DEFINITIONS
• MATERIAL REQUIREMENTS
• CONSTRUCTION REQUIREMENTS
• METHOD OF MEASUREMENT

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1.0 INTRODUCTION

• Specification for reinforced soil structures is
  also known as the specification of Geotechnical
  Work.
• Geotechnical work is a work relating to soil
  mechanics,

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• foundation engineering, rock mechanics,
  engineering geology, hydrogeology and material
  testing.

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2.0 DESIGN

• Subsoil Investigation
• Design Standard
• Design Calculation
• ISO Certification

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Subsoil Investigation

• Shall be carried out based on the initial design
  and construction works as to determine the
  adequacy and stiffness of the subsoil.
• Performed by qualified P.Eng.

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Design Standard

• Reinforced soil structures design based on the
  British Standard,BS 80061995 Code of Practice
  for Strengthened/Reinforced Soils and other fills.

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Design Calculation

• Design Report including design calculations will
  be submitted by the specialist contractor and
  reviewed by geotechnical or checked by the
  consultant.
• Approved by a Professional Engineer.

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ISO Certification

• Is an official document that states a specialist
  contractor for the construction of Reinforced
  Soil Structures are true and have reached the
  certification of ISO 9001.
• Example

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3.0 DEFINITIONS

• Consists of
• Anchored Earth
• Backfill material
• Cohesive frictional fill
• Frictional Fill
• Reinforced Earth

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Anchored Earth

• Means a form of reinforced soil which uses
  anchors embedded within the backfill soil mass to
  provide stability.
• Example of anchored earth application Retaining
  wall.

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Backfill Material

• Meaning Fill material in the reinforced soil
  structure in contact with the reinforcing
  elements, connections and facings.

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Cohesive Frictional Fill

• Meaning A fill containing gt 15 material passing
  a 63µm sieve in accordance with BS 410.
• Frictional Fill
• Meaning A fill containing lt 15 material passing
  a 63µm test sieve in accordance with BS 410.

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Reinforced Earth

• Meaning A form of reinforced soil which uses
  reinforcing elements embedded within the backfill
  soil mass to provide stability.

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6.0 METHOD OF MEASUREMENT

• Consists of
• Supply of System Components Materials
• -Unit of measurement for the
• supply of all system components
• materials for the wall including

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• the facing panels, reinforcing
• elements, anchor blocks, joint
• materials, fasteners and other accessories
  shall be in square
• metres of the wall surface area.
• Excavation

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• -Excavation is a trench or
• depression in an earth surface,
• formed by earth removal.
• -Unit m³
• Wall Erection
• -Unit m² of wall surface area
• erected.

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• -The embedded portion of the
• wall, joint gaps and drainage or
• service holes in the wall shall be
• included in measurement of the
• wall surface area.
• Concrete Levelling Pad
• -Length in linear metre completed

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• in place and accepted, measured
• along the line and grade of the
• pad.
• Backfill
• -Compacted volume in m³.

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Excavation process