consolidometer for determination of consolidation properties

IS 12287: Scope & Key Specifications for Consolidometer Equipment

1. Scope (Clause 1)

• Covers details of consolidometer used for one-dimensional consolidation tests.
• Applicable for 50 mm and 60 mm size consolidometers.
• Used to determine consolidation characteristics of soils.

2. Materials (Table 1)

3. Dimensions & Tolerances

• Detailed in Figures 1 to 11 for both 50 mm and 60 mm sizes.
• Tolerances as per IS 2102 (Part 1)-1980 (medium class).
• Nominal dimensions unless otherwise specified.

Summary Diagram of Equipment Components

graph TD
    A[Base] --> B[Water Jacket]
    B --> C[Water Inlet]
    A --> D[Ring]
    D --> E[Collar]
    E --> F[Loading Pad]
    F --> G[Rubber Gasket]
    G --> H[Porous Disc A]
    G --> I[Porous Disc B]

For detailed dimensions, refer to Figures 1-11 in IS 12287. This standard ensures uniformity

IS 12287: Key Dimensions & Specifications Summary

• Dimensions & Tolerances:

  • Refer to Figures 1 to 11 for detailed nominal dimensions of equipment parts.
  • Unless otherwise specified, tolerances follow IS 2102 (Part 1)-1980, medium class for linear/angular dimensions.
  • Example: Grooves are 1.5 x 1.5 mm (Clause 1.5).

• Typical Dimensions (mm):

  • Bases, water jackets, rings, collars, loading pads, gaskets, porous discs are detailed separately for 50 mm and 60 mm sizes.
  • All dimensions are in millimetres (mm).

• Material Specifications (Table 1):

Important Notes:

• Use IS 2102 Part 1 for tolerance values unless otherwise specified.
• Refer to Figures 2A, 2B, 3A, 3B, etc., for exact dimensional drawings.
• Materials ensure durability and corrosion resistance, critical for soil testing equipment performance.

flowchart LR
    A[Base] --> B[Water Jacket]
    B --> C[Screws]
    C --> D[Water Inlet]
    D --> E[Ring]
    E --> F[Collar]
    F --> G[Loading Pad]
    G --> H[Gasket]
    H --> I[Porous Disc A & B]

For exact dimensions, consult the respective figures in IS 12287.

IS 12287 - Material Specifications for Consolidometer Equipment

Table 1: Materials for Construction

Notes:

• IS 292-1983 covers leaded brass ingots and castings.
• IS 3622-1977 covers sandstone slabs and tiles.
• All metallic parts are chrome or rhodium plated for corrosion resistance.
• Rubber gasket ensures proper sealing.

Summary

• Use leaded brass (chrome/rhodium plated) for all metallic parts.
• Use rubber for gaskets.
• Use stone (sandstone) for porous discs.
• Follow IS standards for material quality and plating.

This ensures durability, corrosion resistance, and proper functioning of consolidometer equipment.

IS 12287: Construction Specifications for Consolidometer Equipment

Key Materials (Table 1)

Construction & Dimensions

• Dimensions for 50 mm and 60 mm sizes are detailed in Figures 1 to 11.
• Tolerances follow IS: 2102 (Part 1) - 1980 for medium class.
• Features include 1.5 x 1.5 mm grooves, straight knurling on components.
• Loading pads and porous discs have specific dimensional drawings (Figs. 8A/B, 9A/B, 10A/B, 11A/B).

Summary

• Use leaded brass with chrome/rhodium plating for metallic parts for corrosion resistance.
• Rubber gaskets ensure sealing.
• Stone porous discs (A & B) conform to IS: 3622.
• Follow dimensional tolerances per IS: 2102 for accuracy.

flowchart TD
    A[Base] -->|Leaded brass| B[Water Jacket]
    B --> C[Screws]
    C --> D[

IS 12287 - Marking Specifications (Clause 5.1)

Each consolidometer equipment shall be clearly and indelibly marked with:

• a) Manufacturer's name and/or registered trade-mark
• b) Date of manufacture
• c) Type of material

Additional Relevant Details:

• Materials (Table 1) specify parts and their materials, e.g.:

  • Base, water jacket, screws, loading pad, ring, collar: Leaded brass (Chrome/Rhodinium plated) per IS: 292-1983
  • Gasket: Rubber
  • Porous discs A & B: Stone per IS: 3622-1977

• Marking ensures traceability and material identification for quality control.

Summary Table for Marking Data:

flowchart TD
    A[Equipment] --> B[Marking]
    B --> C[Manufacturer Name/Trademark]
    B --> D[Date of Manufacture]
    B --> E[Material Type]

Note: For detailed marking style and placement, refer to Bureau of Indian Standards, New Delhi.

IS 12287 - Assembly and Leakproof Requirements

1. Leakproof Assembly (Clause 4.2)

• The assembly shall be leakproof when the water jacket is filled with water and screws are tightened by hand tightening only.
• No additional torque or sealing compound is required beyond hand tightening.

2. Materials (Table 1 Summary)

3. Dimensional & Construction Details

• Follow figures 1 to 11 for detailed dimensions and tolerances.
• Tolerances as per IS 2102 (Part 1)-1980 (medium class).
• Key features include 1.5 x 1.5 mm grooves, knurling on water jacket, and specified PCDs for screw holes (e.g., 28.5 mm & 43.5 mm PCD).

4. Key Specifications for Leakproof Assembly

• Use rubber gasket as per Fig. 9A/B for sealing.
• Ensure all mating surfaces are clean and undamaged.
• Hand-tighten screws evenly to avoid distortion.

flowchart TD
    A[Assemble Base & Water Jacket] --> B[Insert Rubber Gasket]
    B --> C[Place Porous Disc]
    C --> D[Hand Tighten Screws on PCD]
    D --> E{Water Filled in Jacket}
    E -->|No Leak| F[Assembly Approved]
    E -->|Leak| G[Check Gasket & Tighten Screws]

Summary:
Hand-tightening screws with rubber gasket ensures leakproof assembly in water jacket as per IS 12287. Use specified materials and dimensions for reliable sealing.