Vase for store tent

IS 7548: Scope Summary

• Scope: Covers requirements and specifications for the vase for a store tent sized 15 m × 6 m (Clause 1.1).
• Materials: Includes coir rope, hawser laid 16 × 18000, with overall finished length specified.
• Guy Ropes: Must be spliced over 100 mm with a 65 mm back splice (Clause 9.3).
• Testing: Samples must be tested for:
  • Moisture content
  • Dimensions
  • Workmanship and finish (Clause 9.3)
• Dimensions: All dimensions are in millimetres.
• References: Definitions per IS 707:1976 (Clause 3.1) and related standards in Annex A (Clause 2.1).

Key Specifications Table

Typical Splice Length Illustration

flowchart LR
    A[Guy Rope] -->|Splice 100 mm| B[Spliced Section]
    B -->|Back Splice 65 mm| C[Back Spliced End]

This standard ensures durability and workmanship for store tent vases using coir ropes with specified splicing and testing criteria.

IS 7548: Referenced Indian Standards - Key Points

1. Annex A (Clause 2.1) lists essential Indian Standards referenced in IS 7548:

2. Clause 3.1 states definitions are as per IS 707:1976 (timber technology glossary).

3. Packing (Clause 11.1):

   • 15 vases packed in suitable jute cloth bags unless specified otherwise.

4. Timber Species (Annex B, Clause 4.1):
   Botanical names with trade names and symbols (e.g., Dalbergia sissoo = Sissoo = SIS).

Summary Table of Referenced IS Standards

Notes on Usage:

• These referenced standards provide material specs, definitions, and quality controls essential for compliance.
• Always use the latest editions and amendments.
• For timber terms and species, refer to IS 707 and Annex B respectively.

flowchart TD
    A[IS 7548] --> B[Annex A: Referenced IS]
    B --> C[IS 347: Shellac varnish]
    B --> D[IS 349: Lacquer]
    B --> E[IS 707: Timber glossary]
    B --> F[IS 1078: Copper naphthe-nate]
    B --> G[IS 1410: Coir ropes]
    B --> H[IS 1745: Petroleum solvents]
    A --> I[Annex B: Timber Species]
    A --> J

IS 7548: Definitions & Key Specifications Summary

1. Definitions

   • Clause 3.1 refers to IS 707:1976 for all relevant timber technology and utilization terms.
   • For precise terminology, consult IS 707 glossary.

2. Sampling (Clause 9.2)
   Sample size and acceptance criteria for vases from a lot:

3. Packing (Clause 11.1)

   • Standard packing: 15 vases per jute cloth bag.

4. Referenced Standards (Annex A)

   • IS 707:1976 (Glossary for timber terms)
   • IS 347, 349, 1078, 1410, 1745 (related varnishes, lacquers, solvents, ropes)

5. Timber Species (Annex B)
   Common species with trade names and symbols, e.g.,

   • Acacia arabica (Babul) - BAB
   • Dalbergia sissoo (Sissoo) - SIS
   • Toona ciliata (Toon) - TOO

Summary Diagram: Sampling Decision Flow

flowchart TD
    A[Lot Size] --> B{Size Range}
    B -->|<=300| C[Sample Size = 6, Max Defective = 0]
    B -->|301-500| D[Sample Size = 7, Max Defective = 0]
    B -->|501-800| E[Sample Size = 8, Max Defective = 0]
    B -->|>800| F[Sample Size = 10, Max Defective = 1]

Note: Always verify the latest edition and amendments of IS 7548 and related standards for compliance.

IS 7548: Key Specifications for Materials

Timber Species (Annex B, Clause 4.1)

Material Testing (Clause 9.3)

• Moisture content
• Dimensions
• Workmanship and finish

Packaging (Clause 11.1)

• Fifteen vases packed in suitable jute cloth bags.

Reference Standards for Materials (Annex A)

• IS 347: Shellac varnish
• IS 349: Cellulose nitrate lacquer
• IS 707: Timber technology glossary
• IS 1078: Copper naphthenate
• IS 1410: Coir ropes
• IS 1745: Petroleum hydrocarbon solvents

Summary Diagram: Material Selection & Testing Process

flowchart TD
    A[Timber Species Selection] --> B[Material Testing]
    B --> C{Tests}
    C -->|Moisture Content| D[Accept/Reject]
    C -->|Dimensions| D
    C -->|Workmanship & Finish| D
    D --> E[Packaging as per IS 7548]

Note: Use IS 707 for timber terms and IS 1410 for coir rope specifications. Normal manufacturing tolerances apply (Clause 6.2).

IS 7548 — Manufacture and Design Key Points

1. Manufacturing Tolerances (Clause 6.2)

• Normal manufacturing tolerances are allowed on all dimensions to accommodate minor deviations during production.

2. Packing Specification (Clause 11.1)

• Packing: 15 vases per bag using suitable jute cloth unless otherwise specified.

3. Sampling for Quality Control (Clause 9.2, Table 1)

4. Timber Species (Annex B)

• Common species used include Babul (BAB), Haldu (HAL), Sissoo (SIS), Ebony (EBO), Toon (TOO), etc., each with botanical and trade names.

5. Referenced Standards (Annex A)

• Related IS codes for varnishes, lacquers, ropes, and solvents ensure quality materials in manufacture.

Summary Diagram of Manufacturing and Quality Flow

flowchart TD
    A[Raw Materials] --> B[Manufacturing Process]
    B --> C[Dimension Check with Tolerances]
    C --> D[Sampling Inspection]
    D -->|Pass| E[Packing (15 per jute bag)]
    D -->|Fail| F[Reject or Rework]
    E --> G[Dispatch]

Note: For detailed design formulas, refer to IS 707:1976 for timber terms and IS 7548 for specific manufacturing practices.

IS 7548: Dimensions and Tolerances Summary

• Clause 6.1: Vases must conform to specified dimensions shown in Fig. 1 (not provided here).
• Clause 6.2: Normal manufacturing tolerances are allowed on all dimensions to accommodate minor variations.
• Clause 5.1.1: Vases should be smoothly finished (sandpapered), varnished/lacquered, and guy ropes fastened at the neck by splicing as per Fig. 1.

Sampling for Quality Control (Clause 9.2 & Table 1)

Key Points:

• Tolerances are "normal" (typical manufacturing variations).
• Dimensions must strictly follow Fig. 1.
• Sampling size depends on lot size with zero or minimal permissible defects.

If exact dimensional tolerances are needed, refer to Fig. 1 or related detailed annexures in IS 7548.

IS 7548 - Timber Treatment Key Points

1. Copper Naphthenate Treatment (Clause 4.3 & 7.1)

• Copper naphthenate must conform to IS 1078:1973.
• For timbers Haldu, Kaim, Kanju, and Jhingan:
  • Dipping duration: 15 seconds
  • Solution concentration: 10% copper naphthenate in petroleum hydrocarbon solvent

2. Timber Quality (Clause 4.1 & 4.1.1)

• Timber species as per Annex B.
• Moisture content ≤ 15%.
• Timber must be:
  • Straight-grained
  • Well-seasoned
  • Free from pith, decay, insect attack, dead knots, shakes, splits (except hair cracks)
• Sapwood allowed only in Haldu, Kaim, Kanju.

Quick Reference Table:

flowchart LR
    A[Timber Species] --> B{Haldu, Kaim, Kanju, Jhingan?}
    B -- Yes --> C[Dip 15 sec in 10% Copper Naphthenate]
    B -- No --> D[Other Treatment or No Treatment]
    C --> E[Ensure Moisture ≤ 15%]
    E --> F[Check defects: No pith, decay, insect attack, dead knots, splits]

This ensures durability and quality of timber as per IS 7548 standards.

IS 7548: Workmanship and Finish - Key Points

• General Quality (Clause 8.2):
  Workmanship and finish must be reasonably good — no major defects or roughness.

• Timber Treatment (Clause 7.1):
  For vases made from Haldu, Kaim, Kanju, Jhingan timbers:

  • Dip in 10% copper naphthenate solution in petroleum hydrocarbon solvent
  • Duration: 15 seconds

• Inspection Criteria (Clause 9.4):

  • Samples drawn per Table 1 (sampling plan)
  • Visual inspection for defects, workmanship, finish
  • Any vase failing visual criteria → Rejected
  • Passing vases → Accepted

• Manufacturing Tolerances (Clause 6.2):

  • Normal tolerances on dimensions are allowed (no strict limits specified)

Summary Table: Visual Inspection Outcome

This ensures consistent quality and durability of wooden vases per IS 7548.

IS 7548: Sampling and Criteria for Conformity

Sampling (Clause 9.2 & Table 1)

• Samples are randomly selected based on lot size.
• The permissible number of defective vases varies with lot size.

Testing (Clause 9.3)

• Samples must be tested for:
  • Moisture content
  • Dimensions
  • Workmanship and finish

Criteria for Conformity (Clause 9.4)

• If samples meet standard requirements, visually inspect the entire lot.
• Reject any vase failing visual defects, workmanship, or finish.
• Accept the lot if all inspected vases pass.

This ensures quality control by limiting defective units and verifying physical and aesthetic standards before acceptance.

IS 7548: Marking Specifications for Vases

Clause 10.1 - Marking Requirements: Each vase shall be legibly and indelibly marked with:

• Manufacturer's name, initials, or recognized trade-mark
• Year of manufacture

Clause 10.1.1 - Standard Mark:

• Each vase may also bear the BIS Standard Mark, indicating compliance with IS standards and quality assurance under BIS supervision.

Additional Relevant Details:

Summary:

• Marking ensures traceability and quality.
• BIS Standard Mark confirms compliance.
• Proper packing and sampling ensure product integrity.

flowchart TD
    A[Vase] --> B[Marking]
    B --> C[Manufacturer's Name/Trade Mark]
    B --> D[Year of Manufacture]
    B --> E[BIS Standard Mark (optional)]
    A --> F[Packing: 15 vases per jute bag]
    A --> G[Sampling as per lot size]

IS 7548 - Packing Specifications (Clause 11.1):

• Packing Unit: 15 vases per bag.
• Packing Material: Suitable jute cloth bag.
• Purpose: Ensures safe handling and transportation.

Related Key Points:

Summary Table: Sample Size & Defect Criteria (Clause 9.2)

Packing Diagram (Conceptual):

graph TD
    A[Vases (15 units)] --> B[Jute Cloth Bag]
    B --> C[Sealed & Ready for Transport]

Note: Use proper jute bags to maintain product integrity during storage and transit as per IS 7548 Clause 11.1.

IS 7548: List of Referred Indian Standards (Annex A)

This standard references key Indian Standards essential for compliance:

Key Points:

• These standards cover varnishes, lacquers, timber terminology, preservatives, ropes, and solvents relevant to timber and tent accessories.
• Compliance ensures quality and uniformity in materials used.
• For detailed properties and testing methods, refer to the individual IS codes above.

Additional Notes:

• Packing: 15 vases packed in suitable jute bags (Clause 11.1).
• Timber species are listed in Annex B with botanical names and trade symbols.
• BIS governs the use of Standard Marks and quality control under the BIS Act, 1986.

flowchart TD
    A[IS 7548] --> B[Annex A: Referred IS Codes]
    B --> C[IS 347: Varnish]
    B --> D[IS 349: Lacquer]
    B --> E[IS 707: Timber Glossary]
    B --> F[IS 1078: Copper Naphthenate]
    B --> G[IS 1410: Coir Ropes]
    B --> H[IS 1745: Hydrocarbon Solvents]
    A --> I[Annex B: Timber Species]
    A --> J[Packing: 15 vases per jute bag]

For full details, always consult the latest editions of these referenced standards.

IS 7548: Species of Timber for Vase Manufacture

Key Points from Clause 4.1 & Annex B:

• Only timber species listed in Annex B are permitted.
• Timber must be straight-grained, well-seasoned with moisture ≤ 15%.
• Must be free from:
  • Centre heart (pith)
  • Sapwood (except in Haldu, Kaim, Kanju)
  • Decay, insect attack, dead knots, shakes, splits, cracks (except hair cracks).

Typical Timber Species (from Annex B, commonly used):

Moisture Content Control:

• Moisture content ≤ 15% ensures dimensional stability and durability.
• Use oven-dry method or moisture meter for verification.

Summary Table for Timber Quality:

flowchart LR
    A[Timber Selection] --> B{Species in Annex B?}
    B -- Yes --> C[Check Grain & Moisture]
    B -- No --> D[Reject Timber]
    C --> E{Defects Present?}
    E -- No --> F[Accept Timber for Vase]
    E -- Yes --> D

Use only Annex B species, well-seasoned, defect-free timber for vase manufacture per IS 7548.