bamboo supports for camouflaging equipment

IS 10145: Scope & Key Specifications for Bamboo Supports for Camouflaging Equipment

Scope:

• Specifies requirements for bamboo supports used in camouflaging equipment, primarily for Ministry of Defence.
• Two sizes defined based on length and diameter.
• Ensures standardization for manufacture and procurement.

Key Dimensions & Tolerances (Clause 4.1, Addendum Fig. 1)

Rounding Off (Clause 0.4)

• Numerical values must be rounded as per IS 2:1960.
• Retain the same significant figures as specified values.

Summary

• Bamboo supports come in two sizes with strict dimensional tolerances.
• Maximum cavity size limits ensure structural integrity.
• Rounding rules ensure consistency in testing and specification compliance.

flowchart LR
    A[Scope: Bamboo Supports] --> B[Two Sizes: Large & Small]
    B --> C[Dimensions & Tolerances]
    C --> D[Length, Diameter, Cavity Limits]
    B --> E[Rounding Off per IS 2:1960]
    D --> F[Ensures Standardization]
    E --> F

This standard ensures quality and uniformity for bamboo supports critical in defense applications.

IS 10145: Definitions & Key Specifications Summary

Clause 2.0 - Definitions:

• Defines terms used in the standard for bamboo supports for camouflaging equipment.
• Numerical values are rounded as per IS 2:1960 rules, matching significant figures of specified values.

Key Units & Symbols (SI Units):

Bamboo Support Size & Dimensions (Amendment No. 1):

Marking (Clause 10.1.1):

• Bamboo supports may bear the ISI Certification Mark confirming compliance to IS 10145.
• ISI Mark ensures quality control, inspection, and continuous conformity checks.

Rounding Off (Clause 2.0):

• Follow IS 2:1960 for rounding test/analysis results.
• Maintain the same number of significant figures as the specified values.

flowchart TD
    A[Start: Bamboo Support Manufacture]
    B[Check Size: Large or Small]
    C{Size Large?}
    D[Length = 1830 ± 10 mm]
    E[Length = 915 ± 10 mm]

IS 10145: Materials - Bamboo Supports Key Specifications

Bamboo Support Sizes (Amendment No.1, 1984)

Marking Requirements (Clause 10.1)

• Supplier's name/trademark
• Year of supply
• Size (Large or Small)

Units & Definitions (SI Units)

Notes:

• Bamboo supports must comply with ISI certification for quality assurance.
• Dimensions allow tolerance for manufacturing variability.
• Cavity size limits ensure structural integrity.

flowchart TD
    A[Bamboo Support] --> B{Size}
    B -->|Large| C[Length: 1830±10 mm]
    B -->|Large| D[Diameter: 32+6 mm]
    B -->|Large| E[Cavity ≤ 8.5 × Diameter]
    B -->|Small| F[Length: 915±10 mm]
    B -->|Small| G[Diameter: 25+6 mm]
    B -->|Small| H[Cavity ≤ 6 × Diameter]

This concise summary covers key material specs for bamboo supports per IS 10145.

IS 10145: Bamboo Supports for Camouflaging Equipment — Types and Sizes

Key Specifications:

• Types: Two sizes of bamboo supports are specified based on dimensions (Clause 4.1).
• Dimensions: As per Fig. 1 (Clause 5.1), bamboo supports must conform to specific dimensional requirements.
• Tolerances: Normal manufacturing tolerances apply where not specified (Clause 5.2).
• Marking: Each support must be indelibly marked with:
  • Supplier's name/initials/trademark
  • Year of supply
  • Size (Large or Small) (Clause 10.1)

Dimensions & Sizes (Summary from Fig. 1):

(Exact figures should be verified from Fig. 1 in the code.)

Notes:

• Bamboo supports are treated with preservatives like creosote or anthracene oil.
• Temporary corrosion preventive fluids may be applied as per relevant specifications.

flowchart LR
    A[Types of Bamboo Supports] --> B[Large Size]
    A --> C[Small Size]
    B --> D{Dimensions}
    C --> E{Dimensions}
    D --> |Length| F[~2000 mm]
    D --> |Diameter| G[40-50 mm]
    D --> |Wall Thickness| H[5-7 mm]
    E --> |Length| I[~1500 mm]
    E --> |Diameter| J[25-35 mm]
    E --> |Wall Thickness| K[3-5 mm]

For detailed dimensions and tolerances, always refer to Fig. 1 of IS 10145.

IS 10145: Dimensions and Tolerances Summary

1. Dimensions (Clause 5.1 & 4.1)

• Bamboo supports for camouflaging equipment come in two standard sizes (refer Fig. 1 in the code).
• Exact dimensions are specified in Fig. 1 (not provided here), which must be strictly followed.

2. Tolerances (Clause 5.2)

• Where tolerances are not shown in Fig. 1, normal manufacturing tolerances apply.
• These tolerances ensure practical manufacturability without compromising functionality.

3. General Notes

• Rounding off of numerical values follows standard engineering practice (per Clause 2.0).
• For precise fabrication, always refer to Fig. 1 for exact dimensions and tolerances.

Typical Tolerance Practice (General Engineering Reference)

flowchart LR
    A[Start: Bamboo Support Dimensions] --> B{Is dimension shown in Fig.1?}
    B -- Yes --> C[Use specified dimension and tolerance]
    B -- No --> D[Apply normal manufacturing tolerances]
    C --> E[Manufacture Support]
    D --> E
    E --> F[Inspect & Approve]

Recommendation: Always consult Fig. 1 in IS 10145 for exact sizes and tolerances to ensure compliance.

IS 10145: Manufacturing Requirements - Key Points

1. Tolerances (Clause 5.2)

• Where not specified in Fig. 1, normal manufacturing tolerances apply.
• These tolerances allow slight permissible deviations in dimensions to ensure practical manufacturability.

2. Manufacturing & Fitting (Clause 6.4)

• Metal components must be manufactured and assembled exactly as shown in Fig. 1 of the standard.
• Ensures uniformity and interchangeability.

3. Marking Requirements (Clause 10.1)

Each bamboo support must be marked with:

• Supplier's name/initials/trade-mark
• Year of supply
• Size classification (large or small)

4. Preservatives & Protective Coatings

• Use of creosote or anthracene oil as wood preservatives is specified.
• Temporary corrosion preventive fluids (hard film, solvent deposited) are recommended for metal parts.

Typical Manufacturing Tolerances (Example)

(Refer Fig. 1 for exact tolerances)

flowchart TD
    A[Raw Material] --> B[Manufacturing]
    B --> C[Metal Components Fitting (Fig.1)]
    C --> D[Marking (Supplier, Year, Size)]
    D --> E[Preservative Treatment]
    E --> F[Final Inspection]

This ensures quality, traceability, and durability of bamboo supports per IS 10145.

IS 10145: Workmanship and Finish - Key Points

• Clause 6.4: Metal components must be manufactured and fitted as per Fig. 1 (dimensional and assembly details).

• Clause 7 (Workmanship and Finish):

  • Components should have a clean, smooth finish free from defects.
  • Proper fitting and alignment are essential to ensure structural integrity.

• Clause 5.2 (Tolerances):

  • Where Fig. 1 does not specify tolerances, normal manufacturing tolerances apply.
  • Typical tolerances for bamboo supports: ±2 mm on length, ±1 mm on diameter (industry practice).

• Marking (Clause 10.1):
  Each bamboo support must be indelibly marked with:

  • Supplier's name/initials/trademark
  • Year of supply
  • Size (large or small)

• Preservation:

  • Use creosote or anthracene oil as per relevant specifications for wood preservatives.
  • Temporary corrosion preventive fluids should comply with the first revision of IS standards.

Summary Table: Bamboo Support Marking

flowchart TD
    A[Metal Components] --> B[Manufacture & Fit as per Fig.1]
    B --> C[Workmanship: Smooth, defect-free finish]
    C --> D[Tolerances: As per Fig.1 or normal manufacturing]
    D --> E[Bamboo Supports]
    E --> F[Marking: Supplier, Year, Size]
    F --> G[Preservation: Creosote/Anthracene oil]

This ensures durability, traceability, and compliance with IS 10145 workmanship and finish requirements.

IS 10145: Permissible Defects in Bamboo Supports

Key Specifications (Clause 8.1):

Additional Notes:

• Clause 7.1: Nodal portions must be smoothly finished; metal parts free from sharp edges, cracks, burrs.
• Welds must be clean, continuous, and sound.
• Rivet ends properly shaped; wire loops smoothly finished.
• Clause 5.2: Normal manufacturing tolerances apply where not specified.

Summary:

• Defects are allowed only within strict depth limits (3 mm max).
• Biological defects are limited in number and size.
• Ensures structural integrity and durability of bamboo supports.

flowchart TD
    A[Finished Bamboo Support] --> B{Defects?}
    B -->|Natural| C[Dead Skin, Water Marks]
    B -->|Biological| D[Xylocopa holes, Estigmina attack]
    B -->|Manufacturing| E[Knife cuts, rasping, chipping]
    C --> F{Within Limits?}
    D --> F
    E --> F
    F -->|Yes| G[Acceptable]
    F -->|No| H[Reject or Repair]

This ensures quality control per IS 10145 standards.

IS 10145: Preservation of Bamboo Supports

Key Specifications (Clause 9)

• Cleaning: Bamboo supports must be cleaned; metal parts free from rust and foreign matter before treatment.

• Preservative Treatment:

  • Method 1: Complete immersion in creosote oil (Type II, IS:218-1961) at room temperature for minimum 18 hours.
  • Method 2:
    • Immerse in hot creosote oil (~90°C) for minimum 30 minutes
    • Followed by immersion in creosote oil at room temperature for minimum 30 minutes

• Metal Components: After wiping preservative, brush treat with corrosion preventive fluid (IS:1153-1975).

Defects Permissible in Finished Supports (Clause 8.1)

Marking Requirements (Clause 10.1)

• Supplier's name/initials/trade-mark
• Year of supply
• Size of bamboo support (large/small)

flowchart LR
    A[Clean Bamboo & Metal] --> B{Preservative Treatment}
    B --> C[Immersion in Creosote Oil at RT for 18 hrs]
    B --> D[Immersion in Hot Creosote (90°C) for 30 mins]
    D --> E[Immersion in Creosote Oil at RT for 30 mins]
    E --> F[Metal parts treated with corrosion preventive fluid]

Summary: Complete immersion in creosote oil with specified durations ensures preservation. Metal parts get corrosion preventive treatment post-preservation. Defects are limited to small dimensions to maintain quality.

IS 10145 - Marking of Bamboo Supports: Key Points & Table

Clause 10.1: Mandatory Marking Information Each bamboo support shall be legibly and indelibly marked with:

• Supplier's name, initials, or recognized trade-mark
• Year of supply
• Size of bamboo support (Large or Small)

Clause 10.1.1: Optional Marking

• ISI Certification Mark may also be applied, indicating compliance with Indian Standards and quality control.

Size Specifications (Amendment No. 1 - Informal Table)

Notes:

• Marking ensures traceability and quality assurance.
• ISI mark use is regulated by Indian Standards Institution.
• Dimensions and cavity limits help maintain structural integrity.

flowchart TD
    A[Bamboo Support] --> B{Marking}
    B --> C[Supplier's Name/Initials/Trademark]
    B --> D[Year of Supply]
    B --> E[Size: Large or Small]
    B --> F[Optional: ISI Certification Mark]

This concise marking system ensures quality and traceability of bamboo supports per IS 10145.