Link points to Internet Archive / others. Not hosted by InfraLens. Details
IS 14065:1994 is the Indian Standard (BIS) for gabions - code of practice for design and construction. This code provides guidelines for the design and construction of gabion structures used for retaining walls, channel linings, and erosion protection. It covers material specifications for wire mesh and stone fill, design principles for stability analysis, and construction procedures for assembly and placement.
Provides guidelines for the design and construction of gabions for retaining structures, erosion control, and other civil engineering applications.
Overview
Status
Current
Usage level
Specialized
Domain
Geotechnical — Geosynthetics and Ground Improvement
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
Practical Notes
! Ensure a filter (geotextile or graded granular material) is used behind/beneath the gabion structure to prevent loss of fine soil particles from the backfill, which can cause settlement and loss of support.
! Internal connecting wires (diaphragms and tie wires) are critical for maintaining the rectangular shape and preventing bulging under load. Their correct placement is not optional.
! Stones should be tightly hand-packed at the exposed faces for a neat appearance and machine-filled in the core, ensuring minimum voids to achieve the design density and prevent future settlement.
Standard Specification for Double-Twisted Hexagonal Mesh Gabions and Revet Mattresses (Metallic-Coated Steel Wire or Metallic-Coated Steel Wire With PVC Coating)
Focuses on the material, manufacturing, and properties of the gabion product itself.
BS 8002:2015+A1:2017BSI, United Kingdom
MediumCurrent
Code of practice for earth retaining structures
Covers the geotechnical design principles for retaining walls, including gabion structures, but not the product spec.
EN 10223-3:2013CEN, European Union
MediumCurrent
Steel wire and wire products for fencing and netting - Part 3: Hexagonal steel wire netting for engineering purposes
Specifies the hexagonal wire mesh component, aligning with the material aspects of IS 14065.
FHWA-NHI-10-024Federal Highway Administration, USA
HighCurrent
Design and Construction of Mechanically Stabilized Earth Walls and Reinforced Soil Slopes - Vol I & II
Provides comprehensive design and construction guidance for various retaining systems, including gabions.
Key Differences
≠IS 14065 primarily uses a traditional Factor of Safety (FoS) approach for stability design, whereas modern international codes like BS 8002 (based on Eurocode 7) and FHWA guides use Limit State Design (LSD) or Load and Resistance Factor Design (LRFD), which apply partial factors to loads and material properties.
≠International standards like ASTM A975 offer a more detailed classification of corrosion protection, including various classes of Zinc-Aluminum (Galfan) coatings and polymer coatings, which are more advanced than the standard galvanization primarily detailed in the IS code.
≠The Indian standard is a single, concise code of practice covering both design and construction. The international landscape is often fragmented, with separate standards for the product (e.g., ASTM A975), the wire mesh (EN 10223-3), and the geotechnical design (BS 8002).
≠Seismic design in IS 14065 is based on a simplified pseudo-static approach using seismic coefficients from IS 1893. Modern international design manuals (e.g., FHWA) provide more detailed guidance on internal and external stability under seismic conditions.
Key Similarities
≈All standards are based on the same fundamental principles of gravity retaining wall design, requiring stability checks for sliding, overturning, and bearing capacity failure.
≈The requirements for the stone fill material are universally similar, specifying hard, durable, non-frost-susceptible rock with a size range appropriate to the mesh opening to ensure interlock and prevent loss through the mesh.
≈Core construction practices are consistent across all standards, including foundation preparation, box assembly, staggered vertical joints, use of internal connecting wires (bracing), and controlled placement of stone fill.
≈The mandatory use of internal diaphragms at approximately 1-meter intervals for gabion units longer than 1.5 meters is a standard requirement in both IS 14065 and international practices to provide stiffness and maintain the structure's shape.
Parameter Comparison
Parameter
IS Value
International
Source
Design Safety Factor (Sliding)
Minimum 1.5 (global factor of safety)
Uses partial factors on actions and soil parameters (e.g., γM for tan φ' = 1.25), resulting in a comparable overall safety level.
BS 8002:2015
Wire Tensile Strength
350 to 550 N/mm² (as per IS 280)
380 to 550 N/mm² (for soft temper wire)
ASTM A975
Minimum Zinc Coating (2.7 mm wire)
260 g/m² (for 'heavily coated' wire as per IS 4826)
245 g/m² (Class A coating as per ASTM A641)
ASTM A975
Nominal PVC Coating Thickness
0.5 mm (as per IS 16014)
0.55 mm (nominal average thickness)
ASTM A975
Stone Fill Size vs Mesh Opening
1.25 to 1.5 times the mesh opening 'D' (e.g., 100-120mm for 80x100 mesh)
Generally between 100mm to 200mm for standard 8x10 mesh.
ASTM A975
Mesh Type
Double-twisted hexagonal woven steel wire mesh
Double-twisted hexagonal woven steel wire mesh
ASTM A975
Mesh Opening Tolerance
±10% on the 'D' dimension of the mesh opening (as per IS 4826)
±10% on the 'D' dimension of the mesh opening
EN 10223-3:2013
⚠ Verify details from original standards before use
Key Values6
Quick Reference Values
Minimum Factor of Safety against Sliding1.5
Minimum Factor of Safety against Overturning1.5
Typical bulk unit weight of filled gabion18 kN/m³
Design Porosity of Gabion Fill30%
Coefficient of friction (gabion on coarse sand/gravel)0.6
Minimum zinc coating on wireAs per IS 4826, varies by wire diameter
Key Formulas
FS_sliding = (ΣV * tan(δ)) / ΣH ≥ 1.5 — Factor of Safety against Sliding
FS_overturning = ΣM_resisting / ΣM_overturning ≥ 1.5 — Factor of Safety against Overturning
What is the minimum factor of safety against sliding for a gabion wall?+
A minimum factor of safety of 1.5 is required (Clause 5.3.3.1).
What kind of stone should be used in gabions?+
Hard, durable, dense, and non-weathering stone. The smallest dimension of any stone should be at least twice the larger dimension of the mesh opening (Clause 3.2).
Is a foundation required for a gabion wall?+
Yes, the wall must be built on a firm, level foundation prepared by removing topsoil and loose material. A concrete base is sometimes used for major structures (Clause 6.2).
How is drainage handled behind a gabion wall?+
Gabions are free-draining, but a filter of geotextile or graded aggregate must be placed behind the wall to allow water to pass without washing out the retained soil (Clause 5.5).