The 1983 edition of IS 2133 outlines the specifications for wooden tent pins utilized to secure tent ropes, detailing two variants—with and without metal bands and shoes—and defining three standard size categories. It specifies recommended timber species, precise manufacturing dimensions and tolerances, preservation techniques, craftsmanship standards, and marking protocols. This standard is vital for manufacturers, suppliers, and end-users who require reliable and consistent quality in wooden tent pins for general tenting purposes.
Overview
The 1983 edition of IS 2133 outlines the specifications for wooden tent pins utilized to secure tent ropes, detailing two variants—with and without metal bands and shoes—and defining three standard size categories. It specifies recommended timber species, precise manufacturing dimensions and tolerances, preservation techniques, craftsmanship standards, and marking protocols. This standard is vital for manufacturers, suppliers, and end-users who require reliable and consistent quality in wooden tent pins for general tenting purposes.
Audience
Contents
Structure
This section defines the scope of IS 2133 regarding dimensions, tolerances, and manufacturing requirements for wooden tent pins, especially focusing on octagonal shapes. It includes detailed size specifications for large, medium, and small pins, with key dimensions provided in tables and figures. Manufacturing tolerances are outlined, along with material specifics such as mild steel pin thickness and shoe fabrication. Rounding off of measurements follows IS 2-1960 guidelines to maintain precision.
Clarifies the terminology used within IS 2133 by referencing IS 707:1976, which covers timber-related terms like knots, grain direction, and moisture content. This section also reiterates dimensional requirements and tolerances for wooden tent pins, specifying that if not explicitly stated, standard manufacturing tolerances apply. Tables summarizing octagonal pin dimensions assist in understanding size and shape.
Outlines the two primary types of wooden tent pins: Type I without metallic bands and shoes, and Type II which includes these metal reinforcements. It specifies the three recognized sizes—small, medium, and large—with typical dimensions. Design considerations highlight the function of metallic shoes and bands in enhancing durability and resistance to wear, while maintaining efficient use of timber resources.
Details the dimensional requirements and tolerances for wooden tent pins, including the thickness of mild steel sheets used for metallic components. Lists appropriate timber species suitable for manufacturing, emphasizing durability and availability, such as Hardwickia binata, Terminalia arjuna, Acacia nilotica, Dalbergia sissoo, Shorea robusta, and Tamarindus indica. This section also highlights the importance of moisture content and grain orientation for optimum pin performance.
Describes fabrication standards including specific dimensional tolerances for each pin size. Specifies that mild steel components such as pins and conical shoes must be welded and ground to precise shapes, with pin ends riveted flush. Timber used must meet moisture and grain criteria, be free from defects like decay or excessive knots, and maintain the octagonal profile. Emphasis on adherence to quality workmanship ensures product reliability.
Focuses on the exact measurements and tolerances for wooden tent pins, with detailed tables enumerating length, width, thickness, and other dimensional parameters in millimeters. Specifies that normal manufacturing tolerances apply where explicit values are absent. This section also notes the thickness of mild steel sheets for metallic shoe and band components, reinforcing the importance of precision in production.
Specifies material thickness requirements for steel sheets used in shoe and band fabrication, and outlines timber quality parameters such as maximum moisture content and grain inclination limits. Lists allowed timber defects and necessary exclusions. Describes the welding and finishing processes for metallic parts, ensuring the final product meets octagonal shape standards and quality expectations.
Explains the mandatory preservation treatment involving full immersion of wooden tent pins in a 50% creosote Type 1 and 50% fuel oil (Grade L.V.) solution. Two approved methods are detailed: hot immersion at 95 ± 5°C for at least 15 minutes followed by cold immersion for 30 minutes, or continuous cold immersion at room temperature for a minimum of 8 hours. These treatments enhance resistance to decay and environmental damage.
Describes marking protocols where each wooden tent pin may bear the ISI certification mark to confirm compliance with standards. Markings must be clear, durable, and indicate conformity to IS 2133 as well as manufacturer identification. This ensures traceability and quality assurance throughout the supply chain.
Lists the timber species approved for use in wooden tent pins, emphasizing their strength, durability, and suitability for outdoor conditions. Common species include Teak, Sal, Deodar, Eucalyptus, and Shisham. The appendix stresses the importance of proper seasoning to prevent defects and maintain dimensional stability. Standard sizes for pins are also referenced to aid efficient production.
Frequently Asked
IS 2133:1983 mandates that wooden tent pins be made from timber species enumerated in Appendix A of the standard, selected for their strength and durability. Typical approved species include Teak (Tectona grandis), Sal (Shorea robusta), Deodar (Cedrus deodara), and other robust hardwoods commonly recognized in Indian standards. These species ensure longevity and performance of the tent pins.
The standard defines two types of wooden tent pins—Type I without metal fittings and Type II with metallic bands and shoes—across three sizes: Large, Medium, and Small. Dimensions such as overall length (A), widths (B, C), and other critical measurements are specified with allowable tolerances (e.g., Large pins have 600 ± 15 mm length). Mild steel components have a standardized thickness of 1.6 mm. Where not explicitly defined, normal manufacturing tolerances apply, ensuring interchangeability and quality.
Wooden tent pins must undergo full immersion in a preservative mixture of 50% creosote Type 1 and 50% fuel oil Grade L.V. Two approved preservation procedures exist: heating the mixture to 95 ± 5°C and immersing pins for at least 15 minutes followed by immediate immersion at room temperature for 30 minutes; or alternatively, immersing pins continuously at room temperature for a minimum of 8 hours. This treatment protects the pins from decay, insect damage, and environmental wear.
Type I wooden tent pins are purely wooden, lacking any metallic band or shoe, making them lighter and more economical, with shapes typically octagonal or round. Type II pins incorporate a metallic band and a conical steel shoe, enhancing their durability and resistance to wear, especially useful in hard or abrasive soil conditions. Type II pins are suited for heavy-duty applications, while Type I pins are generally employed for standard usage.
While IS 2133 does not explicitly detail marking and certification clauses, standard practice involves marking wooden tent pins with the manufacturer's identification and size or type designation to ensure traceability. The pins may bear the ISI Certification Mark to confirm compliance with the standard. Suppliers typically provide certificates of conformity verifying adherence to dimensions, material quality, and manufacturing standards outlined in IS 2133.
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