equipment for determination of liquid limit of soils cone penetration method

IS 11196: Introduction - Key Specifications & Tables

1. Materials of Construction (Table 1)

IS 11196 - Scope: Key Specifications & Tables

1. Dimensions & Tolerances (Clause 2.1)

• Dimensions of equipment parts per Figures 1 to 9.
• Unless otherwise specified, medium class tolerances as per IS 2102 (Part 1)-1980 apply.
• All dimensions in millimeters.
• Example: Base body, levelling screws, dial gauge parts, etc., detailed with nominal sizes and tolerances.

2. Materials of Construction (Clause 3.1, Table 1)

IS 11196: Dimensions and Tolerances Summary

1. Dimensions & Tolerances:

• Dimensions of all component parts are per Figures 1 to 9 (all in mm).
• Unless otherwise specified, medium class tolerances from IS 2102 (Part 1) - 1980 apply.
• Dimensions are nominal unless special tolerances are mentioned.

2. Key Components & Dimensions:

• Examples include:
  • Levelling Screw (Fig. 2B)
  • Fixed Level Screw (Fig. 2C)
  • Push Button Pin (Total length 28 mm)
  • Spur Rack Gear: 50 teeth, DP 36 (Fig. 8)

3. Tolerances Reference:

• IS 2102 (Part 1) defines general linear/angular tolerances for medium class:

4. Material Specifications (Clause 3.1, Table 1):

Conceptual Diagram of Dimensional Tolerance Application

flowchart LR
    A[Nominal Dimension] --> B{Tolerance Class?}
    B -->|Medium Class| C[Apply IS 2102 (Part 1) Tolerances]
    B -->|Special Tolerance| D[Apply Specified

IS 11196 - Materials of Construction (Clause 3.1 & Table 1)

IS 11196: Construction Details - Key Specifications & Materials

1. Materials of Construction (Table 1)

IS 11196: Marking and Identification - Key Points

1. Marking Requirements (Clause 5.1)

Each part shall be clearly and indelibly marked with:

• Name of manufacturer
• Date of manufacture

2. Optional Marking (Clause 5.1.1)

• Equipment may bear the ISI Certification Mark, indicating compliance with IS standards and quality control.

3. Materials of Construction (Clause 3.1, Table 1)

IS 11196: Assembly and Mass Requirements Summary

Key Specifications:

• Dimensions & Tolerances

  • Follow Figures 1 to 9 for component dimensions.
  • Use medium class tolerances as per IS 2102 (Part 1)-1980 unless otherwise specified.
  • Dimensions are nominal unless special tolerances are mentioned.

• Mass Requirements (Clause 4.1)

  • Plunger assembly + cone mass = 80 ± 0.5 g
  • Adjust thickness of weight (Fig. 5E) to achieve this mass.
  • Pin at bottom of rack must be in line and concentric with plunger assembly.

• Materials (Clause 3.1)

  • Refer to Table 1 for materials of construction for each component.

Important Components (from Figures):

General Notes:

• All dimensions in millimeters (mm).
• Assembly must ensure alignment and concentricity for proper function.
• Use 3 tapped holes M12 × 12.5 pitch as per Fig. 1 for fixing base.

Reference for Tolerances (IS 2102 Part 1):

flowchart TD
    A[Base Body] --> B[Bracket]
    B --> C[Plunger Assembly]
    C --> D[Release Mechanism]
    D --> E[Dial Rack & Cone]
   

Use of ISI Certification Mark (IS 11196:1985)

Clause 5.1.1 Summary:

• The ISI Certification Mark may be applied on equipment covered by this standard.
• The ISI Mark assures compliance with the Indian Standard through:
  • A defined system of inspection, testing, and quality control supervised by ISI.
  • Continuous conformity checks by ISI as a safeguard.
• Use of the ISI Mark is governed by the Indian Standards Institution (Certification Marks) Act.
• Manufacturers must obtain a license from ISI to use the mark.

Key Points on ISI Mark Use:

Additional Relevant Table: Materials of Construction (Clause 3.1)

Summary Diagram of ISI Mark Process

flowchart TD
    A[Manufacturer] --> B[Apply ISI Mark License]
    B --> C[Inspection & Testing by ISI]
    C --> D[Product Marked with ISI Certification Mark]
    D --> E[Continuous Surveillance by ISI]
    E --> F[Assurance of Quality & Compliance]

For detailed licensing conditions, contact the Indian Standards Institution.

Reporting and Rounding Off Results as per IS 11196

• Rounding Off Rule:
  All final test or analysis results must be rounded off according to IS 2:1960 — Rules for rounding off numerical values (revised).

• Key Points from IS 2:1960:

  • If the digit to be dropped is less than 5, the preceding digit remains unchanged.
  • If the digit to be dropped is greater than 5, the preceding digit is increased by one.
  • If the digit to be dropped is exactly 5, round off to the nearest even digit (to avoid bias).

• Dimensions and Tolerances:

  • Use nominal dimensions unless otherwise specified.
  • Apply medium class tolerances as per IS 2102 (Part 1):1980 for linear/angular dimensions.
  • Refer to figures (Fig. 1 to 9) in IS 11196 for detailed component dimensions.

Summary Table: Rounding Off (IS 2:1960)

Visual Concept: Rounding Off Flow

flowchart TD
    A[Digit to Drop] --> B{Less than 5?}
    B -- Yes --> C[Keep preceding digit]
    B -- No --> D{Greater than 5?}
    D -- Yes --> E[Increase preceding digit by 1]
    D -- No --> F[Digit = 5]
    F --> G{Preceding digit even?}
    G -- Yes --> C
    G -- No --> E

Note: Always adhere strictly to IS 2:1960 for uniformity and accuracy in reporting test results under IS 11196.

IS 11196 references several related standards crucial for dimensional tolerances, rounding off, and testing methods:

Key References:

• IS 2:1960 — Rules for rounding off numerical values.
• IS 2102 (Part 1):1980 — General tolerances for linear and angular dimensions (medium class).
• Methods of Test for Soils: Part 5 — Determination of liquid and plastic limits (second revision).

Important Specifications:

• Dimensions & Tolerances: As per Figures 1 to 9 in IS 11196, with medium class tolerances from IS 2102 (Part 1).
• Rounding Off: Final test or calculated values must be rounded according to IS 2:1960.
• Materials: Specified in Table 1 of IS 11196 for various equipment parts.

Example: Tapped Holes

• 3 tapped holes M12 × 1.25p (pitch)

Summary Table: Tolerances (from IS 2102 Part 1)

flowchart LR
    A[IS 11196 Equipment] --> B[Dimensions & Tolerances]
    B --> C[IS 2102 (Part 1) - Medium Class]
    A --> D[Rounding Off]
    D --> E[IS 2:1960]
    A --> F[Materials]
    F --> G[Table 1 - IS 11196]

This ensures dimensional accuracy, material compliance, and consistent reporting in tests.