The standard IS 10074:1982 outlines specifications for compaction mould assemblies utilized in light and heavy soil compaction tests to assess properties like moisture content and dry density. It details the types, dimensions, materials, and fabrication methods to guarantee uniform and dependable soil compaction assessments in geotechnical and foundation engineering.
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The standard IS 10074:1982 outlines specifications for compaction mould assemblies utilized in light and heavy soil compaction tests to assess properties like moisture content and dry density. It details the types, dimensions, materials, and fabrication methods to guarantee uniform and dependable soil compaction assessments in geotechnical and foundation engineering.
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As per IS 10074 Clause 2.1 and Table 1, the compaction mould assembly components are made from specific materials: the mould is fabricated from copper alloy, the collar from brass, base plates from cadmium-plated mild steel, stay rods from chromium-plated mild steel, and wing nuts from cadmium-plated cast or forged steel. These material choices ensure durability, corrosion resistance, and reliable performance during soil compaction testing.
IS 10074:1982 specifies two mould types with nominal dimensions. The critical dimension 'A' has a tolerance of ±0.4 mm, while other dimensions conform to nominal values with tolerances as per IS 2102-1969. Holes and tapped hole sizes are fixed, for instance, holes are Ø 8.5 mm and tapped holes are M8. This ensures precise manufacturing and consistency in testing.
IS 10074 provides standardized dimensions and assembly details for compaction moulds that align with the requirements of IS 2720 soil testing methods. By specifying mould volume, shape, and material standards, it ensures uniform sample preparation for both light and heavy compaction tests under IS 2720, facilitating reproducible and comparable soil compaction results across different laboratories.
Although IS 10074 does not explicitly detail marking, common practice following related standards includes marking the mould type (Type 1 or 2), nominal internal diameter, mould height, manufacturer's name or trademark, serial or batch number, and the IS standard reference number. This labeling ensures traceability, identification, and compliance during soil compaction testing.
The base plate, made from cadmium-plated mild steel, can be square or circular with dimensions specified according to mould type. It includes two tapped M8 holes for stay rods and two Ø 8.5 mm clearance holes for fixing. Stay rods are chromium-plated mild steel rods attached through the base plate's tapped holes, passing through the mould and collar eyes, secured by cadmium-plated cast or forged steel wing nuts. This ensures secure assembly and alignment during compaction testing.
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