CBR moulds and their accessories

IS 9669 Scope: Key Specifications & Materials

• Scope: Specifies materials, dimensions, and construction for CBR moulds and accessories used in soil testing.

Key Materials (Table 1 Highlights)

Dimensions & Tolerances

• Dimensions as per Figures 1 to 9 (IS 9669).
• Tolerances per IS 2102-1969 unless otherwise specified.
• All dimensions in millimeters.

Units (SI System)

• Length: metre (m)
• Mass: kilogram (kg)
• Force: newton (N) = 1 kg·m/s²
• Pressure/stress: pascal (Pa) = 1 N/m²

Summary Diagram of Equipment and Materials

graph TD
  A[CBR Equipment] --> B[Mould: Copper alloy]
  A --> C[Cutting collar: Brass]
  A --> D[Base plate: Phosphor bronze / Mild steel (chrome-plated)]
  A --> E[Spacer disc & handle: Mild steel]
  A --> F[Weights: Cast iron]
  A --> G[Adjustable stem & perforated plate: Brass]
  A --> H[Penetration plunger: Mild steel (

IS 9669: Dimensions and Tolerances Key Points

• Dimensions & Tolerances:

  • As per Clause 2.1, all equipment dimensions follow Figures 1 to 9.
  • Unless otherwise specified, tolerances conform to IS 2102-1969.
  • All dimensions are in millimetres (mm).

• Examples of Dimensions:

  • Clause 1.5: Maximum Ø 1.5 mm, 42 holes equally spaced (Fig. 6).
  • Figures 1 to 9 provide detailed dimensions for:
    • Mould, Cutting collar, Base plate, Spacer disc, Weights, Adjustable stem, Penetration plunger, Stay rod, Wing nut & washer.

• Material Specifications (Table 1):

  Equipment	Material	Special Requirements	Relevant IS Standard
  Mould	Copper alloy	-	IS 318-1962
  Cutting collar	Brass	-	IS 292-1961
  Base plate	Phosphor bronze / Mild steel	Chrome-plated (for steel)	IS 28-1975 / IS 513-1973
  Spacer disc & handle	Mild steel	-	IS 513-1973
  Weights	Cast iron	-	IS 210-1978
  Adjustable stem & plate	Brass	-	IS 410-1977
  Penetration plunger	Mild steel	Plated	IS 513-1973
  Stay rod	Mild steel	-	IS 513-1973
  Wing nut & washer	Forged/Cast steel	Cadmium/chrome plated	-

• General Construction Notes (Clause 4.1):

  • Moulds must be smooth internally with two ears for collar/base plate positioning.

Summary Table for Dimensions & Tolerances Reference

IS 9669 - Materials for Construction: Key Specifications & Table Summary

Clause 3.1 & Table 1: Materials for Equipment Construction

Additional Notes:

• Tolerances: Dimensions and tolerances follow IS 2102-1969 unless specifically mentioned.
• Plating: Chrome or cadmium plating for corrosion resistance on mild and forged steels.
• ISI Marking: Equipment may carry ISI mark ensuring compliance and quality control.

Summary of Relevant IS Standards (for reference):

• IS 318-1962: Leaded tin bronze ingots and castings
• IS 292-1961: Brass ingots and castings
• IS 28-1975: Phosphor bronze ingots and castings
• IS 513-1973: Cold rolled carbon steel sheets
• IS 210-1978: Grey iron castings
• IS 410-1977: Rolled brass sheet, strip, and foil

IS 9669: Construction Details for CBR Moulds and Accessories

Key Materials (Table 1 Summary)

Construction & Dimensions

• Dimensions and tolerances follow Figures 1 to 9 in IS 9669.
• Unless specified, tolerances are per IS 2102-1969.
• Example: Adjustable stem perforated plate has 1.5 mm Ø holes, 42 equally spaced.

Notes

• All dimensions are in millimeters.
• Surface plating (chrome/cadmium) enhances corrosion resistance.
• Refer to the respective IS codes for material specifications.

flowchart LR
  A[CBR Mould] --> B[Cutting Collar]
  B --> C[Base Plate]
  C --> D[Spacer Disc & Handle]
  D --> E[Weights]
  E --> F[Adjustable Stem & Perforated Plate]
  F --> G[Penetration Plunger]
  G --> H[Stay Rod]
  H --> I[Wing Nut & Washer]

This layout ensures proper assembly and material use per IS 9669 for reliable CBR testing equipment.

IS 9669 - Marking Specifications (Clause 5.1)

Each equipment must be clearly and indelibly marked with:

• Manufacturer's name or registered trademark (or both)
• Type of material used
• Date of manufacture

Additional Notes:

• Equipment may bear the ISI Certification Mark as per Clause 5.1.1, indicating compliance with Indian Standards under ISI supervision.
• Marking assures quality and conformity under the Indian Standards Institution (Certification Marks) Act.

Related Dimensions & Tolerances:

• Dimensions and tolerances for equipment are specified in Figures 1 to 9 and IS: 2102-1969.
• Unless otherwise stated, dimensions are nominal with tolerances as per IS: 2102-1969.

Summary Table for Marking Information

This marking ensures traceability, quality assurance, and compliance with IS standards for CBR moulds and accessories.

IS 9669 - Accessories Specifications Summary

Key Accessories & Their Specs (Clause 4.4 & Figures 4-9)

• Spacer Disc & Handle (Fig. 4):
  • 16 holes, Ø 1.5 mm, equally spaced
  • Diameter: 210 ± 0.5 mm or 235 ± 0.5 mm
• Adjustable Stem with Perforated Plates (Fig. 6):
  • 42 holes, Ø 1.5 mm, equally spaced
• Penetration Plunger (Fig. 7):
  • Dimensions per Fig. 7 (all in mm)
• Stay Rod (Fig. 8):
  • Dimensions per Fig. 8 (all in mm)
• Wing Nut and Washer (Fig. 9):
  • Dimensions per Fig. 9 (all in mm)

General Notes

• All dimensions are in millimeters (mm).
• Accessories conform to dimensional tolerances ±0.5 mm.
• Accessories ensure proper assembly and function of CBR moulds.

ISI Marking (Clause 5.1.1)

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

Typical Dimensional Table (Example for Spacer Disc)

Conceptual Diagram of Spacer Disc with Holes

circleDiagram
    title Spacer Disc (Top View)
    circle
    hole1: Hole 1
    hole2: Hole 2
    hole3: Hole 3
    hole4: Hole 4
    hole5: Hole 5
    hole6: Hole 6
    hole7: Hole 7
    hole8: Hole 8
    hole9: Hole 9
    hole10: Hole 10
    hole11: Hole 11
    hole12: Hole 12
    hole13: Hole 13
    hole14: Hole 14
    hole15: Hole 15
    hole16: Hole 16

IS 9669: Quality and Surface Finish - Key Specifications

Materials (Clause 3.1, Table 1)

• Mould: Copper alloy (IS 318-1962)
• Cutting Collar: Brass (IS 292-1961)
• Base Plate: Phosphor bronze or mild steel, chrome-plated (IS 28-1975, IS 513-1973)
• Spacer Disc & Handle: Mild steel (IS 513-1973)
• Weights: Cast iron (IS 210-1978)
• Adjustable Stem & Perforated Plate: Brass (IS 410-1977)
• Penetration Plunger: Mild steel, plated (IS 513-1973)
• Stay Rod: Mild steel (IS 513-1973)
• Wing Nut & Washer: Forged or cast steel, cadmium/chrome-plated

Surface Finish & Tolerances (Clause 2.1)

• Dimensions and tolerances follow IS 2102-1969.
• Surface plating (chrome/cadmium) is specified for corrosion resistance and smooth finish.
• Plunger and base plates require plating for durability and smooth penetration.

Dimensional Control

• Maximum hole diameter in perforated plates: 1.5 mm Ø, 42 holes equally spaced.
• All dimensions in millimeters (mm).

Quality Assurance

• Equipment may carry the ISI Certification Mark ensuring compliance with IS standards and continuous quality control.

Summary Table: Material & Surface Finish

Use of ISI Certification Mark (IS 9669: Clause 5.1.1)

• Permissible Marking: Equipment covered by IS 9669 may bear the ISI Certification Mark.
• Legal Framework: Usage is governed by the Indian Standards Institution (Certification Marks) Act and related rules.
• Assurance: ISI Mark indicates compliance with the standard through:
  • Manufacturer's inspection, testing, and quality control.
  • Supervision by ISI.
  • Continuous conformity checks by ISI.
• Licensing: Manufacturers/processors must obtain a license from ISI to use the ISI Mark.
• Reference: Details on licensing conditions are available from the Indian Standards Institution.

Summary Table: ISI Mark Usage

Additional Notes:

• ISI Marked products ensure reliability and standard compliance.
• Use of ISI mark without license is prohibited.

flowchart TD
    A[Manufacturer] --> B[Inspection & Testing]
    B --> C[Quality Control System]
    C --> D[ISI Supervision]
    D --> E[Grant License for ISI Mark]
    E --> F[ISI Mark on Product]
    F --> G[Continuous ISI Checking]

This diagram shows the process flow for ISI marking under IS 9669.

IS 9669 Amendments & Revisions Key Points

• Amendments update materials, dimensions, and references to other IS codes.
• Example: Amendment No. 2 (Sept 1984) revises tripod details (Fig. 10), updates materials standards (e.g., IS:318-1981 replaces IS:318-1962), and modifies dimensional tolerances referencing IS:2102(Part 1)-1980.
• Materials Table (Clause 3.1, Table 1) specifies construction materials with relevant IS standards:

• Dimension Tolerances: As per IS:2102(Part 1)-1980 unless otherwise specified.
• Marking (Clause 5.1.1): Equipment may bear ISI Certification Mark ensuring compliance and quality control.

Summary of Amendments Format

flowchart TD
    A[Original IS 9669-1980] --> B[Amendment No.1 - March 1983]
    B --> C[Updated Table 1 Materials]
    A --> D[Amendment No.2 - Sept 1984]
    D --> E[Tripod details added (Fig.10)]
    D --> F[Material standards updated]
    D --> G[Dimension tolerances revised]

Note: For exact dimensions and tolerances, refer to respective figures (Fig.1 to Fig.10) and IS:2102 standards.

IS 9669: Key Specifications for Equipment Figures & Materials

Materials for Equipment (Table 1 Summary)

Dimensional Specifications

• All dimensions are in millimeters (mm).
• Tolerances follow IS 2102-1969 unless otherwise specified.
• Example: Adjustable stem perforated plate (Fig. 6) has 1.5 mm Ø max holes, 42 holes equally spaced.

Marking

• Equipment can bear the ISI Certification Mark per Clause 5.1.1, ensuring compliance and quality control.

Summary Diagram of Equipment & Materials

graph LR
A[Mould (Copper alloy)] --> B[Cutting collar (Brass)]
B --> C[Base plate (Phosphor bronze / Mild steel)]
C --> D[Spacer disc & handle (Mild steel)]
D --> E[Weights (Cast iron)]
E --> F[Adjustable stem & perforated plate (Brass)]
F --> G[Penetration plunger (Mild steel)]
G