mason's mallets
1986 Edition

Overview of Scope for Mason's Mallets

• Objective: Defines essential requirements for wooden mallet heads utilized by masons.

• Approved Timber Species: Clause 3.1(a) specifies suitable woods such as:

  Botanical Name	Common Name
  Acacia nilotica	Babul
  Albizia lebbeck	Kokko
  Chloroxylon swietenia	Satinwood
  Dalbergia sissoo	Sissoo
  Shorea robusta	Sal
  Tectona grandis	Teak
  Xylia xylocarpa	Irul

• Measurement Units: SI units (meter, kilogram, second, etc.) are used throughout.

• Sampling and Conformance: Procedures align with Appendix G of IS 620-1985.

• Terminology: Timber-related definitions refer to IS 707-1968.

Important Highlights:

• Employ durable hardwood species as listed for mallet heads.
• Strictly adhere to SI units for all dimensional measurements.
• Sampling and quality verification conducted per IS 620-1985 Appendix G.

flowchart LR
    A[Scope of Mason's Mallets] --> B[Approved Timber Species]
    A --> C[Use of SI Units]
    A --> D[Sampling & Conformity (IS 620-1985)]
    A --> E[Timber Definitions (IS 707-1968)]

Ensures production of mallets that meet endurance and quality criteria for masonry.

Key References for Mason's Mallets Production

1. Timber Species for Heads (Clause 3.1(a))

• Common species include:
  • Acacia nilotica (Babul)
  • Albizia lebbeck (Kokko)
  • Dalbergia sissoo (Sissoo)
  • Tectona grandis (Teak)
  • Shorea robusta (Sal)
  • Plus 28 other species recognized for durability.

2. Units and Symbols (SI System)

• Conversions:
  • 1 N = 1 kg·m/s²
  • 1 Pa = 1 N/m²

3. Related Indian Standards

• IS 707-1968: Timber and timber products terminology.
• IS 620-1985 (Appendix G): Sampling and compliance rules for mallets.
• IS 6642: General requirements for wooden tool handles.

Timber Selection Workflow

flowchart TD
    A[Choose Timber Species] --> B{Is it listed in IS 6642?}
    B -->|Yes| C[Proceed with Recommended Species]
    B -->|No| D[Reject or Validate Properties]
    C --> E[Check Dimensions & Quality]
    E --> F[Produce Mallet Head]

Refer to IS 6642 for detailed specifications on size, quality, and sampling.

Definitions and Terminology in Mason's Mallets Standard

1. Definitions:

• Timber and product terms are defined in IS 707:1968.
• Rounding conventions follow IS 2:1960.
• Updated timber species list reflects latest research.

2. Timber Species for Mallet Heads (Clause 3.1(a))

(Complete list includes 28 species recommended for mallet heads.)

3. SI Units and Symbols:

Important Notes:

• Use IS 707 for comprehensive timber definitions.
• Apply IS 2:1960 for numerical rounding.
• Timber species listed are chosen for strength and durability in mallet heads.

flowchart TD
    A[Definitions in IS 6642] --> B[Refer IS 707:1968]

Materials and Production Guidelines in IS 6642

1. Approved Timber Species for Mallet Heads (Clause 3.1(a))

Recommended species include:

Selected for their hardness, durability, and shock resistance.

2. Manufacturing Tolerances (Clause 5.2)

• Fit between head and handle: ±3 mm
• Other dimensions: Normal manufacturing tolerances apply.

3. Craftsmanship and Finishing (Clause 6)

• Mallet components must have smooth finishes without defects such as knots or cracks.
• Joints should be secure and durable.

4. Units and Definitions

• Force: 1 N = 1 kg·m/s²
• Pressure/Stress: 1 Pa = 1 N/m²

Typical Timber Properties Table

graph LR
A[Selected Timber Species] --> B[Manufacturing Process]
B --> C[Tolerances: ±3 mm at head fit]
B --> D[Workmanship & Finish]
D --> E[Smooth, defect-free surface]

Refer to IS 620 for additional manufacturing guidelines.

Specifications for Dimensions and Tolerances of Wooden Mason's Mallets

Core Requirements:

• Dimensions: Defined in Figure 1 of IS 6642 (refer to the standard for exact measurements).
• Tolerances:
  • At handle-head joint: +3 mm
  • Other areas: Typical manufacturing tolerances of ±1 to 3 mm depending on the component.
• Workmanship: The handle must fit firmly and securely into the head (Clause 4.3).

Approved Timber Species (Clause 3.1a):

Hardwoods such as:

• Acacia nilotica (Babul)
• Albizia species (Kokko, Kala Siris, Safed Siris)
• Dalbergia sissoo (Sissoo)
• Shorea robusta (Sal)
• Tectona grandis (Teak)
• Additional species listed in the clause.

Measurement Units:

• Length in millimeters (mm) or meters (m)
• Force in newtons (N)
• Stress in pascals (Pa)

Tolerance Summary Table

Practical Guidance:

• Ensure a snug, secure fit between handle and head to prevent loosening.
• Use specified hardwood species for long-lasting durability.
• Follow dimensional details in IS 6642 Figure 1.

flowchart LR
    A[Mallet Head] -->|Fits onto| B[Handle]
    B -->|Snug fit| A
    A & B --> C[Overall Dimensions]
    C --> D[Tolerance: +3 mm at joint]
    C --> E[Standard tolerances elsewhere]

Consult IS 6642 Figure 1 and Clause 5.1 for detailed dimensions.

Workmanship and Finishing Standards for Mason's Mallets

Specifications (Clause 6)

• Surface Quality: Mallet surfaces must be uniformly smooth and properly shaped.
• Joints: Metal bands (if used) should have clean, well-executed brazing or welding.
• Tolerances (Clause 5.2):
  • Head-to-handle fit tolerance: ±3 mm
  • Other parts: Standard manufacturing tolerances.

Timber Species for Heads (Clause 3.1)

(Refer to Clause 3.1 for complete list)

Tolerance Summary

Additional Considerations

• High finish quality supports durability and user comfort.
• Proper jointing prevents loosening of metal bands.
• Sampling and quality compliance per IS 620:1985 Appendix G.

flowchart TD
    A[Mallet Head] -->|Fit Tolerance ±3 mm| B[Metal Band]
    B --> C{Joint Quality}
    C -->|Good| D[Accept]
    C -->|Poor| E[Reject]

Refer to IS 6642 and IS 620-1985 for detailed workmanship standards.

Testing Methods for Mason's Mallets per IS 6642

• Sampling: Follow Appendix G of IS 620:1985 to select representative mallet samples for testing.

• Rounding Off: Apply rounding rules as per IS 2:1960 to test results for consistency.

• Approved Timber: Use species listed in Clause 3.1(a) like Acacia nilotica, Tectona grandis, Dalbergia sissoo, etc.

• Measurement Units: Use SI units, such as meters for length, newtons for force, and pascals for stress.

Summary Table of Testing References

Notes:

• Testing includes impact durability, dimensional accuracy, and material quality.
• Use only recommended hardwoods for mallet heads to ensure toughness.
• Maintain consistent testing protocols for reliable results.

flowchart LR
    A[Select Timber] --> B[Sample Drawing (IS 620:1985)]
    B --> C[Conduct Testing]
    C --> D[Calculate Results]
    D --> E[Apply Rounding (IS 2:1960)]
    E --> F[Decide Conformity]

This framework guarantees compliance with IS 6642 testing standards.

Guidelines on Preservation and Treatment of Timber in Mason's Mallets

Though specific formulas are not detailed in IS 6642, general preservation practices consistent with related IS codes are recommended:

Timber Selection (Clause 3.1(a)):

• Durable species such as Acacia nilotica, Albizia lebbeck, Dalbergia sissoo, Tectona grandis (teak), Shorea robusta (sal), among others.

Preservation Techniques:

• Pressure Treatment: Application of preservatives like Chromated Copper Arsenate (CCA) or creosote under pressure to ensure deep penetration.
• Surface Treatment: Applying preservatives via brushing, dipping, or spraying.
• Seasoning: Proper drying to moisture content around 12–15% before treatment.

Calculation Formulas (General):

• Preservative Retention (kg/m³): [ \text{Retention} = \frac{\text{Weight of preservative absorbed (kg)}}{\text{Volume of timber (m}^3)} ]

• Volume of Timber (m³): [ V = L \times B \times H ] where L = length, B = breadth, H = height (in meters).

Units (as per IS 6642):

Process Flow for Preservation

flowchart LR
    A[Select Timber Species] --> B[Seasoning to Reduce Moisture]
    B --> C[Application of Preservatives]
    C --> D{Treatment Method}
    D -->|Pressure| E[Deep Penetration]
    D -->|Surface| F[Brushing/Dipping/Spraying]
    E --> G[Drying and Storage]
    F --> G

For detailed preservative retention and treatment guidelines, refer to IS 401.

Packaging Standards for Mason's Mallets under IS 6642

Clause 9.1 Highlights

• Packaging Material: Use gunny cloth to securely wrap mallets.
• Packing Method: Mallets should be tied firmly and grouped into manageable lots for ease of transport.

Approved Timber Species for Heads (Clause 3.1(a))

Includes:

• Acacia nilotica (Babul)
• Albizia lebbeck (Kokko)
• Chloroxylon swietenia (Satinwood)
• Dalbergia sissoo (Sissoo)
• Tectona grandis (Teak)
• Additional species as listed.

Additional Notes

• Utilize well-seasoned, durable hardwoods for mallet heads.
• Handles must comply with IS standards for wooden tool handles.
• Sampling and quality checks as per IS 620:1985 Appendix G.

Packaging Summary Table

flowchart LR
    A[Mallets] --> B[Securely Tied]
    B --> C[Wrapped in Gunny Cloth]
    C --> D[Grouped into Convenient Lots]
    D --> E[Facilitates Safe Transport]

Refer to IS 620:1985 Appendix G for sampling and conformity.

Sampling Methods and Compliance Requirements for Mason's Mallets

• Sampling Protocol: According to Clause 10.1, sampling must follow Appendix G of IS 620-1985, ensuring random and representative selection.

• Compliance Criteria: Samples must conform to dimensional, material, and workmanship standards as outlined in IS 6642 and IS 620-1985.

• Timber Species (Clause 3.1(a)) Include:

  • Acacia nilotica (Babul)
  • Albizia lebbeck (Kokko)
  • Chloroxylon swietenia (Satinwood)
  • Dalbergia sissoo (Sissoo)
  • Shorea robusta (Sal)
  • Tectona grandis (Teak)
  • Xylia xylocarpa (Irul)

Sampling Table (Based on IS 620-1985 Appendix G)

• Acceptance Number (c): Maximum defective items allowed for lot acceptance.

Key Points:

• Sampling allows efficient quality control without testing every item.
• Compliance covers dimensions, material species, and workmanship.
• Measurements use SI units (meters, kilograms, etc.).

flowchart TD
    A[Batch of Mason's Mallets] --> B[Random Sample (IS 620:1985 Appendix G)]
    B --> C{Meets Criteria?}
    C -->|Yes| D[Accept Batch]
    C -->|No| E[Reject Batch]

Refer to IS 6642 and IS 620-1985 for detailed sampling and acceptance standards.

Marking Requirements for Mason's Mallets per IS 6642

Clause 11.1.1 allows mallets to bear the ISI Certification Mark, confirming adherence to Indian Standards under ISI supervision.

Key Marking Details:

• ISI Certification Mark: Symbolizes conformity with IS 6642.
• Regulatory Framework: Governed by Indian Standards Institution (Certification Marks) Act.
• Assurance: Guarantees compliance and ongoing quality monitoring by ISI.
• Manufacturer Requirements: Valid ISI licensing is mandatory to use the mark.

Additional Information:

• Sampling and quality assurance follow IS 620:1985 Appendix G.
• Approved timber species include Acacia nilotica (Babul), Dalbergia sissoo (Sissoo), Tectona grandis (Teak), Chloroxylon swietenia (Satinwood), among others.

Marking Summary Table

This marking ensures traceability and quality adherence for mason's mallets in line with IS 6642.