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IS 10589:1983 is the Indian Standard (BIS) for equipment for subsurface sounding of soils. This standard specifies the requirements for the equipment used in subsurface sounding of soils, specifically for the Static Cone Penetration Test (SCPT). It covers the material, dimensions, and manufacturing tolerances for components like the sounding cone, sounding rods, and friction jacket to ensure consistent and reliable geotechnical data collection.
! This standard specifies the equipment itself ('the what'), while IS 4968 (Part 3) details the testing procedure ('the how'). They must be used together.
! The cone dimensions (10 cm² base area, 60° apex angle) are critical for obtaining results comparable to international data and must be checked for wear.
! Though this standard is old, its core specifications for the mechanical cone penetrometer are fundamental and still referenced.
Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils
Defines the equipment and procedure for the Standard Penetration Test (SPT), directly aligning with the IS code's focus.
ISO 22476-3:2005/Amd 1:2011International Organization for Standardization (ISO), International
HighCurrent
Geotechnical investigation and testing — Field testing — Part 3: Standard penetration test
Provides international specifications for SPT equipment, procedure, and reporting, covering the same subject matter.
BS EN ISO 22476-3:2005+A1:2011British Standards Institution (BSI), UK / European Committee for Standardization (CEN), Europe
HighCurrent
Geotechnical investigation and testing. Field testing. Standard penetration test
The European and British adoption of the ISO standard, making it the effective equivalent in those regions.
AS 1289.6.3.1-2020Standards Australia, Australia
HighCurrent
Methods of testing soils for engineering purposes - Soil strength and consolidation tests - Determination of the penetration resistance of a soil - Standard penetration test (SPT)
Australian national standard specifying SPT equipment and methodology, functionally equivalent to the IS code.
Key Differences
≠IS 10589:1983 does not mandate the measurement or correction of hammer energy transfer. Modern international standards (ASTM D1586, ISO 22476-3) strongly emphasize measuring the delivered energy and normalizing the N-value to a reference 60% energy (N60).
≠The Indian standard is prescriptive about using older hammer types (donut, safety), whereas international standards are more performance-based, focusing on the delivered energy regardless of the specific hammer mechanism (e.g., automatic trip hammers).
≠IS 10589 allows for samplers with or without liners without specifying different internal diameters. ASTM D1586 provides distinct inside diameter requirements for lined and unlined samplers to maintain a consistent sample volume.
≠IS 10589 mentions an optional 60° cone point for use in very dense or gravelly soils, replacing the standard shoe. This is a significant deviation from the 'standard' test as defined by ASTM or ISO, which focus on results from the standard split-barrel shoe.
Key Similarities
≈All standards specify the same fundamental hammer mass of 63.5 kg (140 lbs) for driving the sampler.
≈The core test procedure is identical: recording the number of blows required for three successive 150 mm (6 in) penetrations, with the SPT N-value being the sum of blows for the last two increments.
≈The basic design of the split-barrel (split-spoon) sampler, including its ability to be opened longitudinally to retrieve a soil sample, is consistent across all standards.
≈The specified hammer drop height is fundamentally the same, centered around 750-760 mm (30 inches), ensuring a consistent theoretical input energy.