wooden tent pins

IS 2133 - Scope & Key Specifications Summary

• Scope: Covers dimensions, tolerances, and manufacturing details for wooden tent pins with octagonal shapes.

Key Dimensions & Tolerances (Clause 6.2.1, Fig.1 & 2)

• Manufacturing Tolerances: If not specified, normal manufacturing tolerances apply.
• Material Details: MS pins (Ø3 mm), ends riveted flush; MS conical shoes welded and ground to shape.
• Rounding Off: Final test or calculated values rounded as per IS 2-1960 with significant figures matching specified values.

References:

• Definitions per IS 707-1976.
• Dimensional tolerances per Fig. 1 & 2 in Clause 6.2.

This ensures uniformity and interchangeability in wooden tent pin manufacturing.

IS 2133 - Definitions & Key Specifications

1. Definitions

   • Refer to IS 707:1976 for all timber-related definitions used in IS 2133 (Clause 2.0).
   • IS 707 covers timber terminology such as "knot," "grain," "moisture content," etc.

2. Dimensions & Tolerances (Clause 6.1 & 6.2)

   • Pins must conform to dimensions in Fig. 1 & 2 with permissible tolerances.
   • If not specified, normal manufacturing tolerances apply (Clause 6.2.1).

3. Key Dimensional Tables for Octagonal Wooden Tent Pins

• Dimensions in millimeters (mm).
• Thickness applies to shoe and band sheets.

Summary Diagram: Octagonal Pin Dimensions

graph TD
    A[Pin Size A] --> B[Dimension B]
    B --> C[Dimension C]
    C --> D[Dimension D]
    D --> E[Dimension E]
    E --> F[Dimension F]
    F --> Thickness[Sheet Thickness]

Use IS 707 for definitions and IS 2133 Tables/Figures 1 & 2 for detailed dimensional specs and tolerances.

IS 2133 - Wooden Tent Pins: Types, Sizes & Specifications

Types of Wooden Tent Pins (Clause 3.1)

• Type I: Without metallic band and shoe
  • Shape/design as per Fig. 1 (typically octagonal or round)
• Type II: With metallic band and shoe
  • Shape/design as per Fig. 2

Sizes (Clause 1.1)

• Three standard sizes are specified (exact dimensions found in IS 2133 figures/tables):
  • Typically small, medium, and large sizes for different tent types.

Key Points:

• Octagonal and round shapes are allowed.
• Metallic shoe and band (Type II) improve durability.
• Economy in timber use is emphasized due to scarcity.
• Standardization helps in quality control and ease of manufacture.

Typical Dimensions (Example from IS 2133):

Design Notes:

• Metallic shoe prevents splitting and wear.
• Metallic band reinforces the pin head.

flowchart LR
    A[Wooden Tent Pins] --> B[Type I: No Metal]
    A --> C[Type II: With Metallic Band & Shoe]
    B --> D[Octagonal or Round Shape]
    C --> E[Metal Shoe for Durability]
    C --> F[Metal Band for Reinforcement]

For exact shapes and dimensions, refer to IS 2133 Fig. 1 & Fig. 2.

IS 2133 - Materials: Key Formulas, Tables, and Specifications

1. Dimensions & Tolerances (Clause 6.2.1)

• All dimensions in millimeters.
• Tolerances apply as per Fig. 1 & 2 for wooden tent pins.

2. Thickness of Mild Steel Sheet (Clause 1.6)

• 1.6 mm thickness for shoe and band.

3. Suitable Timber Species (Appendix Clause 4.1)

Examples include:

• Hardwickia binata (Anjan)
• Terminalia arjuna (Arjun)
• Acacia nilotica (Babul)
• Dalbergia sissoo (Sissoo)
• Shorea robusta (Sal)
• Tamarindus indica (Imli)

(Full list available in the standard)

Summary Diagram for Dimensions (Octagonal Shape):

graph LR
A[Size A] -->|Length| B[Size B]
B --> C[Size C]
C --> D[Size D]
D --> E[Size E]
E --> F[Size F]

Note: Use normal manufacturing tolerances if not specified. Refer to IS 2133 for detailed workmanship and finish requirements.

IS 2133 - Manufacture Key Points

1. Dimensions & Tolerances (Clause 6.2.1)

• Octagonal Wooden Tent Pins have specified sizes: Large, Medium, Small.
• Dimensions A to F (and G, H for Type II) with permissible tolerances are tabulated.

• Thickness of mild steel sheet for shoe and band: 1.6 mm (Clause 1.6).

2. Material Specifications (Clause 4.2)

• Timber moisture content ≤ 20%.
• Grain inclination ≤ 1 in 15.
• Free from pith, decay, shakes, insect attack, knots (except live pin knots), splits (except hair cracks), warp.

3. Workmanship (Clause 7)

• Weld and grind MS pins and conical shoes to shape.
• MS pins Ø3 mm, ends riveted flush.

Summary Diagram of Octagonal Pin Dimensions

graph LR
  A[Dimension A: Length]
  B[Dimension B: Width]
  C[Dimension C: Height]
  D[Dimension D: Thickness]
  E[Dimension E: Base Length]
  F[Dimension F: Base Width]
  A --> B
  B --> C
  C --> D
  D --> E

IS 2133 - Dimensions and Tolerances for Wooden Tent Pins

Key Points from Clause 6.2 and 6.2.1:

• Tolerances are specified in Figures 1 & 2 and Table 6.2.1.
• Where not specified, normal manufacturing tolerances apply.
• Dimensions are in millimeters (mm).

Octagonal Wooden Tent Pins Dimensions & Tolerances

• Note: Dimensions A to F correspond to specific pin parts shown in Fig.1 and Fig.2.
• Pin ends: MS pins riveted flush.
• Shoe: MS conical shoe welded and ground to shape.

Summary:

• Maintain accurate notch cutting (Clause 5.2).
• Follow dimensional tolerances strictly to ensure fit and performance.
• Use 1.6 mm thick MS sheet for shoe and band components.

graph LR
A[Pin Length (A)] --> B[Width (B)]
B --> C[Height (C)]
C --> D[Notch Depth (D)]
D --> E[Shoe Length (E)]
E --> F[Band

IS 2133: Workmanship and Finish - Key Specifications

1. Material Thickness

• Mild steel sheet for shoe and band: 1.6 mm (Clause 1.6)

2. Timber Quality (Clause 4.2)

• Moisture content ≤ 20%
• Grain inclination ≤ 1 in 15
• Free from:
  • Centre-heart (pith)
  • Decay, shakes, insect attack
  • Knots (except live pin knots)
  • Splits (except hair cracks)
  • Warp

3. Dimensional Tolerances (Clause 6.2 & Table 6.2.1)

• Normal manufacturing tolerances apply where not specified.

4. Manufacturing Notes

• Weld and grind MS pins and shoes to shape.
• MS pin ends to be riveted flush.
• Maintain specified octagonal shapes (Type I & II wooden tent pins).

flowchart LR
    A[Timber Selection] --> B[Seasoned, Moisture ≤ 20%]
    B --> C[Check Grain Inclination ≤ 1:15]
    C --> D[Free from Defects]
    D --> E[Manufacture]
    E --> F[Weld & Grind MS Parts]
    F --> G

IS 2133: Preservation of Pins – Key Specifications

• Preservation Method (Clause 8.1):
  Pins must be preserved by complete immersion in a 50% (v/v) mixture of Creosote Type 1 and Fuel Oil (Grade L.V.). Two options:

  1. Immerse in 95 ± 5°C mixture for ≥15 minutes, then immediately immerse at room temperature for ≥30 minutes.
  2. Alternatively, immerse at room temperature for ≥8 hours continuously.

• Materials:

  • Creosote Type 1: IS 218-1961
  • Fuel Oil Grade L.V.: IS 1593-1971

• Additional Requirements:

  • Pins must be reasonably smooth (Clause 7.1)
  • Moisture content of timber ≤ 20% (Clause 4.2)
  • Grain inclination ≤ 1 in 15
  • Free from defects like rot, shakes, knots (except live pin knots), splits (except hair cracks), and warp.

• Marking (Clause 9.1.1):
  Pins may bear the ISI Certification Mark ensuring compliance and quality control.

Summary Table for Preservation Immersion

flowchart TD
    A[Start: Pins] --> B{Preservation Method}
    B -->|Hot + Cold| C[Immersion at 95±5°C for ≥15 min]
    C --> D[Immediate immersion at room temp for ≥30 min]
    B -->|Cold only| E[Immersion at room temp for ≥8 hours]
    D --> F[Preserved Pins]
    E --> F

This ensures effective penetration of preservative oils, enhancing durability and resistance to decay.

IS 2133 - Marking of Wooden Tent Pins

Key Specifications from IS 2133:

• Marking Requirements (Clause 9.1.1):

  • Each wooden tent pin may be marked with the ISI Certification Mark.
  • ISI Mark ensures compliance with IS standards, quality control, and continuous inspection by BIS.

• Marking Details:

  • Marking should be clear and durable.
  • It indicates the product meets the standard and quality assurance.

• Material Specification (Appendix Clause 4.1):

  • Suitable timber species include:
    • Hardwickia binata (Anjan)
    • Terminalia arjuna (Arjun)
    • Acacia nilotica (Babul)
    • Dalbergia sissoo (Sissoo)
    • Shorea robusta (Sal), etc.
  • Use timber listed in the species table for durability and strength.

• Dimensional Tolerances (Clause 6.2.1, Tables 6 & 2B):

  • Octagonal wooden tent pins have size categories: Large, Medium, Small.
  • Example for Large Size (Type I):
    • A = 600 ± 15 mm
    • B = 55 ± 3 mm
    • Thickness of shoe & band = 1.6 mm (mild steel sheet)

Summary Table: Typical Dimensions for Large Octagonal Pins (Type I)

Visual Concept: Marking Flow

flowchart LR
    A[Manufacture Wooden Tent Pin] --> B{Apply Marking}
    B -->|ISI Mark| C[ISI Certification Mark]
    B -->|Other Markings| D[Manufacturer ID, Size]
    C --> E[Quality Assurance]
    D --> E
    E --> F[Distribution]

**Note

IS 2133 - Wooden Tent Pins: Species of Timber

Key Points from Clause 4.1 & Appendix A:

• Tent pins shall be made from species listed in Appendix A (IS 2133).
• Appendix A typically includes hard, durable, and readily available timbers suitable for outdoor use.
• Common species recommended (from typical Indian timber standards) include:
  • Teak (Tectona grandis)
  • Sal (Shorea robusta)
  • Deodar (Cedrus deodara)
  • Eucalyptus
  • Shisham (Dalbergia sissoo)

Important Considerations:

• Species chosen must have good strength, durability, and resistance to splitting.
• Economy and availability are critical due to the large quantities required.
• The timber should be seasoned properly to avoid warping and splitting.

Standard Sizes (from IS 2133):

Summary:

• Use durable hardwood species listed in Appendix A.
• Follow standardized sizes for economy and efficiency.
• Ensure proper seasoning to maintain strength and durability.

flowchart TD
    A[Select Timber Species] --> B{Is species in Appendix A?}
    B -- Yes --> C[Use for Tent Pins]
    B -- No --> D[Reject Species]
    C --> E[Season Timber Properly]
    E --> F[Manufacture Pins in Standard Sizes]

For exact species list and detailed specs, refer to Appendix A of IS 2133:1983.