mild steel thin-walled sampling tubes and sampler heads

IS 11594: Scope - Key Specifications & Tables

1. Scope Summary

• Covers soil testing instruments and equipment.
• Ensures products comply with IS standards and quality control under ISI certification.
• ISI mark indicates conformity and continuous quality surveillance.

2. Units & Symbols (SI Units)

3. Sampling Tube Dimensions (Clause 5.1, Fig. 1)

• Cutting shoes designed for area ratio within ±10% and inside clearance 1-3%.

4. Rounding Off (Clause 0.4)

• Final test values should be rounded per IS 2-1960.
• Retain the same number of significant figures

IS 11594 Key References Summary

1. Marking & Certification (Clause 6.1.1)

• Equipment parts may carry the ISI Certification Mark.
• ISI Mark ensures compliance with the standard, backed by inspection, testing, and quality control.
• Licensing details for ISI Mark use are governed by the Indian Standards Institution.

2. International System of Units (SI Units)

Supplementary Units:

Derived Units:

3. Rounding Off (Clause 0.4)

• Final test or analysis values must be rounded as per IS : 2-1960.
• Number

IS 11594: Materials for Sampling Tubes

Key Materials & Specifications (Clause 3.1, Table 1)

* IS 1239 (Part 1) covers mild steel tubes, tubulars, and fittings.

Additional Notes

• Hardness for cutting shoes: 45-50 HRC ensures wear resistance.
• Surface finish: Smooth surfaces reduce soil disturbance.
• ISI Marking (Clause 6.1.1): Equipment parts may carry ISI certification ensuring quality compliance.

Dimensions Summary (from Fig. 1 & Clause 5.1)

Summary Diagram of Sampling Tube Parts

graph LR
A[Sampling Head] --> B[Tubular Tube]
B --> C[Cutting Shoe]
C --> D[Soil Sample]

This concise summary covers the material types, specifications, hardness, and dimensional details essential for sampling tubes per IS 11594.

IS 11594: Dimensions and Tolerances Summary

• Tube Sizes (Internal Diameter): 40, 65, 80, 100 mm
• Tolerance on all dimensions: ±0.5 mm (Clause 4.1)
• Length: As desired (Clause 5.1)

Key Dimensions (mm) for Sampling Tubes, Shoes & Heads

• Thread sizes correspond to tube sizes for coupling compatibility.
• Cutting shoes designed for area ratio within ±10% and inside clearance of 1-3%.

Rounding Off

• Follow IS 2-1960 for rounding test/analysis results to the same significant figures as specified values.

Illustration of Sampling Tube Components

graph LR
A[Sampling Tube] --> B[Driving Head]
B --> C[Cutting Shoe]
C --> D[Steel Ball (Ø25)]
C --> E[Vent Holes (4)]

This ensures dimensional accuracy and interchangeability as per IS 11594.

IS 11594: Construction of Sampling Tubes - Key Specifications & Tables

1. Materials (Clause 3.1, Table 1)

2. Sizes & Dimensions (Clause 4.1 & 5.1, Fig. 1)

• Sizes (Internal Diameter, mm): 40, 65, 80, 100
• Tolerance: ±0.5 mm on all dimensions

• Cutting shoes: Designed for area ratio within ±10%, inside clearance 1-3%.

3. Additional Notes

• Sampling tubes, cutting shoes, and heads follow Fig. 1 details.
• Thread sizes correspond to the sampler size.
• ISI Certification Mark may be applied per Clause 6.1.1.

Summary Diagram: Sampling Tube Components

graph LR
A[Sampling Head] --> B[Cutting Shoe]
B --> C[Sampling Tube]
C --> D[Coupling with Threads]

This concise guide covers key construction

IS 11594 - Marking Specifications (Clause 6.1 & 6.1.1)

• Marking Requirements on Each Equipment Part:

  • Manufacturer's name or registered trademark (or both).
  • Size and length of the component.
  • Optional: ISI Certification Mark (subject to ISI Act and licensing).

• ISI Certification Mark:

  • Indicates compliance with IS standards.
  • Ensures production under ISI-supervised quality control.
  • Continuous ISI conformity checks.
  • Licensing details available from Indian Standards Institution.

Summary Table: Marking Information

Additional Notes:

• Markings must be clear and indelible.
• Rounding of test values per IS 2:1960.
• Use SI units as per IS 11594 for all markings (e.g., length in meters).

flowchart TD
    A[Equipment Part] --> B[Mark Manufacturer Name/Trademark]
    A --> C[Mark Size & Length]
    A --> D{ISI Certification Mark?}
    D -->|Yes| E[Apply ISI Mark]
    D -->|No| F[No ISI Mark]

For detailed licensing and marking guidelines, consult the Indian Standards Institution.

Quality Assurance as per IS 11594

Key Points:

• ISI Certification Mark (Clause 6.1.1):

  • Equipment parts may be marked with the ISI mark.
  • This mark ensures compliance with the standard through a system of inspection, testing, and quality control supervised by ISI.
  • Continuous ISI checks ensure conformity.

• Material Specifications (Clause 3.1, Table 1):

  Part	Material	Special Requirement	IS Standard Reference
  Tube	Mild steel	Smooth surface	IS: 1239 (Part 1) - 1979
  Cutting shoes	Mild steel case hardened	45-50 HRC, smooth surface	IS: 4432 - 1967
  Sampling head	Mild steel		IS: 226 - 1975

• Rounding Off (Clause 0.4):

  • Test results must be rounded off per IS: 2-1960.
  • Number of significant digits retained should match the standard's specified value.

• Marking and Traceability:

  • Marking ensures traceability and quality control adherence.

Summary Diagram of Quality Assurance Flow

flowchart TD
    A[Manufacture Equipment] --> B[Inspection & Testing]
    B --> C{Comply with IS 11594?}
    C -- Yes --> D[Apply ISI Certification Mark]
    C -- No --> E[Rectify/Reject]
    D --> F[Continuous ISI Surveillance]
    F --> G[Maintain Quality Assurance]

Note: For detailed procedures on inspection, testing, and certification, refer to the Indian Standards Institution guidelines under the Certification Marks Act.

IS 11594: Definitions & Key Specifications Summary

1. Definitions

• Refer to IS 2809:1972 for all soil engineering terms and symbols.
• Glossary covers standard soil testing terminology.

2. Units and Symbols (SI Units)

3. Marking (Clause 6.1.1)

• Equipment parts may bear ISI Certification Mark, ensuring compliance with IS standards under ISI supervision.

4. Sampling Tube Dimensions (Clause 5.1 & Fig.1)

• Cutting shoes designed for area ratio ±10% and inside clearance 1-3%.

flowchart TD
    A[IS 11594 Definitions] --> B[Refer IS 2809:1972]