library furniture and fittings, Part 1: Timber

IS 1829 Part 1 - Scope & Key Specifications

Scope:

• Covers unit book racks used in libraries.
• Defines terminology, dimensions, and tolerances for racks.

Key Dimensions (Clause 3.2.1, Table 1):

Tolerances (Clause 3.2.2):

• Overall dimensions may vary by ± 5 mm.

Summary:

• Height: 2200 mm (both types)
• Width: 2000 mm (both types)
• Depth: 450 mm (double-faced), 300 mm (single-faced)
• Tolerance: ± 5 mm on all dimensions

This ensures uniformity and interchangeability in library shelving units.

flowchart TD
    A[Unit Book Racks] --> B[Double-faced]
    A --> C[Single-faced]
    B --> D[Height: 2200 mm]
    B --> E[Width: 2000 mm]
    B --> F[Depth: 450 mm]
    C --> G[Height: 2200 mm]
    C --> H[Width: 2000 mm]
    C --> I[Depth: 300 mm]

IS 1829 Part 1: Timber Specifications for Library Furniture

Key Timber Standards:

• Timber species: Use species listed in IS 13622:1993 — Indian timbers classified for furniture and cabinets.
• Moisture content: Follow limits in IS 287:1973 for maximum permissible moisture content depending on usage.
• Timber classification & zones: Refer IS 399:1963 and updates for commercial timber species and zonal distribution.

Important Specifications:

Moisture Content Limits (IS 287:1973):

• Furniture timber: Typically 8-12% moisture content.
• Library furniture: Maintain moisture content within this range to avoid warping or shrinkage.

Timber Rack Definition (Clause 3.1.2):

• Double Faced Unit Rack: 3 uprights forming 4 bays (2 on each face).

graph TD
A[Timber Selection]
A --> B[IS 13622:1993 - Species]
A --> C[IS 287:1973 - Moisture Content]
A --> D[IS 399:1963 - Classification & Zones]
B --> E[Furniture & Cabinet Timber]
C --> F[Max moisture 8-12%]
D --> G[Commercial Timber Zones]

Use these standards to ensure durability, stability, and compliance in library furniture timber selection and fabrication.

Unit Book Racks as per IS 1829 Part 1

Dimensions & Types (Clause 3.2.1, Table 1)

• Shelf spacing: Generally, 350 mm center-to-center distance between shelves.

Tolerances (Clause 3.2.3)

• Rectangular surfaces must have a tolerance of ±8 mm between the two diagonals.

Material Specifications (Clause 13.3.1)

• Outer sides, uprights, top & bottom shelves: 18 mm thick teak board
• Intermediate horizontal shelves: 12 mm commercial plywood
• Display shelves: Teak wood frame with 5 mm teak plywood

Summary Table:

graph TD
A[Unit Book Rack] --> B[Double-faced: 2200x2000x450 mm]
A --> C[Single-faced: 2200x2000x300 mm]
A --> D[Shelf spacing: 350 mm]
A --> E[Material]
E --> F[Outer: 18 mm teak board]
E --> G[Intermediate: 12 mm ply]
E --> H[Display: Teak frame + 5 mm ply]
A --> I[Tolerance: ±8 mm diagonal difference]

This ensures structural integrity and standardization for library furniture as per IS 1829 Part 1.

IS 1829 Part 1: Bay Guide Holders Summary

Key Specifications (Clause 4.1)

• External Dimensions: 400 mm (length) × 200 mm (width)
• Features:
  • Groove arrangement to allow sliding of the guide along the length.
  • Hooks for suspension from rods or rings above.

Definitions (Clause 3.1.1)

• Bay: The face area of a rack between two consecutive uprights.

Relevant Loadings (Clause 3.4)

• Shelf planks must support:
  • 40 kg static load per shelf plank per bay.
  • Bottom shelf plank (double-faced racks) must carry 80 kg.

Unit Book Rack Dimensions (Clause 3.2.1, Table 1)

Practical Notes:

• The groove in bay guide holders ensures smooth lateral movement of guides.
• Hooks must be robust enough to carry the suspended load safely.
• Design shelf planks considering the specified static loads for safety.

flowchart LR
    A[Bay Guide Holder] --> B[Dimensions: 400x200 mm]
    A --> C[Groove for sliding guide]
    A --> D[Hooks for suspension]
    E[Bay] --> F[Between two uprights]
    G[Shelf Plank] --> H[Load: 40 kg (per bay)]
    G --> I[Bottom shelf (double-faced): 80 kg]

This concise summary helps in design, fabrication, and verification of bay guide holders per IS 1829 Part 1.

IS 1829 Part 1 - Book Trolleys: Key Specifications & Dimensions

1. Essential Features (Clause 5.1)

• Refer to Fig. 2 (not provided here) for the trolley's structural layout.
• Trolley designed to hold books with ease of movement.

2. Dimensions (from Table 3.2.1 & Clauses 3.2.1, 3.2.2)

3. Shelving (Clause 5.2)

• Two pairs of sloping shelves for regular books.
• One flat bottom shelf for large-sized books.

4. Bay Guide Holders (Clause 4.1)

• External size: 400 x 200 mm
• Groove for sliding guides.
• Hooks for suspension from rods or rings.

Summary Diagram of Book Trolley Shelving

graph TD
    A[Book Trolley Frame]
    A --> B[Sloping Shelf 1]
    A --> C[Sloping Shelf 2]
    A --> D[Flat Bottom Shelf for Large Books]

This ensures efficient storage and easy access to books while maintaining mobility.

IS 1829 Part 1: Catalogue Cards Cabinets and Boxes

Key Specifications (Clause 6.2 & Table 2)

• Construction (Clause 6.2.3):

  • Cabinet sides, back, bottom, and top: 20 mm thick planks
  • Front divided into 6 vertical columns by 5 intermediate planks, each 20 mm thick × 100 mm wide
  • Cross bearers connecting front columns to back: 20 mm thick × 25 mm wide
  • Locking mechanism to secure at least two consecutive columns
  • Optional pull-out slide provision

• Dimensions (Table 2, Clause 6.2.2):

Construction Summary Diagram

graph LR
A[Sides, Back, Bottom, Top: 20mm thick] --> B[Front divided into 6 columns]
B --> C[5 intermediate planks: 20mm thick × 100mm wide]
C --> D[Cross bearers: 20mm thick × 25mm wide]
D --> E[Locking device for 2 columns]
E --> F[Optional pull-out slides]

This ensures a sturdy, modular cabinet design for easy tray access and secure storage.

IS 1829 Part 1: Catalogue Cards Work Tray Key Specifications

Dimensions & Construction (Clause 6.1 & 8.1)

• Tray Type: Functionally same as catalogue cards box but shaped as a tray (Fig. 6).
• Card Rests: One fixed and one movable card rest as per 6.1.2.7.
• Central Strip (6.1.2.2):
  • Size: 30 mm x 5 mm
  • Purpose: Prevent sliding of card rest at bottom of tray.

Materials & Thickness (Clause 6.2.3)

• Sides, Back, Bottom, Top Planks: 20 mm thick.
• Intermediate Planks (front columns): 20 mm thick, 100 mm wide.
• Cross Bearers: 20 mm thick x 25 mm wide, connect front columns to back.
• Teak Board Thickness: 12 mm (for tray construction).
• Rod: 5 mm diameter (used in construction).

Cabinet Arrangement (Clause 6.2.3a-f)

• Cabinet Setup: 36 trays arranged in 6 columns x 6 rows.
• Locking: Device to lock at least two consecutive columns.
• Optional: Pull-out slide mechanism for trays.

Summary Table of Key Dimensions

flowchart TB
    A[Catalogue Cards Work Tray] --> B[Fixed Card Rest]
    A --> C[Movable Card Rest]
    A --> D[Central Strip 30x5 mm]
    A --> E[12 mm Teak Board]
    A --> F[5 mm Rod]
    G[Cabinet] --> H[36 trays

IS 1829 Part 1: Control Region Fittings – Key Points

1. Control Region Dimensions (Clause 9.1.2)

• Dimensions depend on the number of persons operating the control region.
• Essential per-person dimensions are shown in Fig. 7 (not provided here).
• These dimensions ensure ergonomic and functional operation space.

2. Tolerance on Dimensions (Clause 3.2.2)

• Overall dimensions from Table 1 must be within ± 5 mm tolerance.

3. Catalogue Cards Work Tray (Clause 8.1)

• Functionally similar to catalogue card boxes.
• Includes a fixed and movable card rest (see Clause 6.1.2.7 and Fig. 6).

Summary Table (Typical Control Region Dimensions per Person)

Exact values must be checked from Fig. 7 and Table 1 in IS 1829 Part 1.

flowchart LR
    A[Number of Operators] --> B[Determine Control Region Size]
    B --> C[Width per Operator]
    B --> D[Depth and Height]
    C & D --> E[Apply ±5 mm Tolerance]
    E --> F[Install Catalogue Cards Tray]

Note: Refer to IS 1829 Part 1 Fig. 7 and Table 1 for precise dimensions and fittings details.

Key Specifications & Dimensions for Charging Trays (IS 1829 Part 1: Clause 10.2 & Table 3)

• Material Thickness:

  • Outer planks: 18 mm
  • Inner partitions: 12 mm

• Tray Compartments: 1 to 4 compartments depending on ticket size.

• Dimensions (in mm):

• Additional Notes:
  • The trays are designed to hold readers' tickets.
  • Outer planks and partitions ensure durability and compartment separation.
  • Newark system trays are generally taller than Browne system trays.

Diagram: Cross-section of Charging Tray Compartments

graph LR
A[Outer Plank 18mm] --> B[Inner Partition 12mm]
B --> C[Compartment 1]
B --> D[Compartment 2]
D --> E[Compartment 3]
E --> F[Compartment 4]

This summarizes the essential dimensions and construction details for charging trays per IS 1829 Part 1.

Key Specifications from IS 1829 Part 1 (1978) for Reading Room and Study Tables:

Reading Room Table (Clause 11.1)

• Size:
  • Single reader: 900 mm × 600 mm
  • Three readers: 2400 mm × 600 mm
• Height: Tabletop at 750 mm
• Material:
  • Top: 20 mm thick teak wood with Sunmica finish
  • Frame: 25 mm and 40 mm galvanized steel pipes
• Reference: Fig. 8 illustrates the typical design.

Study Table (Clause 12.1 & 12.2)

• Size: Same as single reading room table: 900 mm × 600 mm
• Additional features:
  • Side drawers with locking
  • Shelf space on top for documents with lighting
• Reference: Fig. 9 shows typical design.

Material Specifications for Periodical Display Rack (Clause 13.3.1)

• Outer sides, uprights, top & bottom shelves: 18 mm teak board
• Intermediate shelves: 12 mm commercial plywood
• Display shelves: Teak wood frame with 5 mm teak plywood

Summary Table

flowchart LR
    A[Reading Room Table] --> B[Single: 900x600x750mm]
    A --> C[Three Readers: 2400x600x750mm]
    D[Study Table] --> E[900x600x750mm]
    E --> F[Side Drawers with Lock]
    E --> G[Top Shelf with Lighting]

This concise summary aligns with IS 1829 Part

IS 1829 Part 1 - Chair Dimensions & Ergonomics

Key specifications for wooden chairs (all dimensions in mm):

• Seat Height (Clause 14.1.1):
  Seat height above floor = 430 mm

• Armrests (Clause 14.1.5):

  • Minimum inside width between arms = 460 mm
  • Height of armrest above seat = 200 mm
  • Armrest setback from front seat edge = 75 mm

• Backrest (Clause 14.4):

  • Curved or shaped for comfort
  • Not too curved to restrict movement, nor too flat

Summary Table of Essential Dimensions

flowchart LR
    A[Floor] -->|430 mm| B[Seat]
    B -->|200 mm| C[Armrest Height]
    B -->|75 mm setback| D[Armrest Front Edge]
    C -->|460 mm spacing| E[Armrest Inside Width]
    B --> F[Backrest - curved for comfort]

These dimensions ensure ergonomic comfort and functionality per IS 1829 Part 1.

IS 1829 Part 1: Periodicals Display Racks

Key Specifications (Clause 13)

• Overall Dimensions:

  • Height = 1910 mm
  • Width = 1435 mm
  • Depth = 405 mm

• Compartments:

  • Total = 25 compartments arranged in 5 rows
  • Each compartment size = 265 mm (width) × 345 mm (height)
  • Each compartment fitted with:
    • Display shelf
    • Handle cum label holder

Construction Notes

• The rack is designed to neatly organize periodicals.
• Compartments are uniform for easy access and labeling.
• The display shelf supports the periodicals in an upright position.

Illustration Reference

• Fig. 10 (in IS 1829 Part 1) shows the typical layout and construction details.

graph TD
    A[Periodicals Display Rack]
    A --> B[5 Rows]
    B --> C[25 Compartments]
    C --> D[Each 265mm x 345mm]
    D --> E[Display Shelf with Handle & Label Holder]

This ensures efficient storage and display of periodicals in libraries or reading rooms.

IS 1829 Part 1: Display Stands - Key Specifications

• Size (Clause 15.1):

  • 910 mm × 910 mm or 1220 mm × 1220 mm
  • Material: Soft surface boards (perforated board, straw board, etc.) capable of holding pins.

• Type (Clause 15.2):

  • Can be single or double sided as required.

• Related Dimensions (from Clause 3.2.1 Table 1 for Unit Book Racks):

• Additional Notes:
  • Display stands are usually smaller than book racks and designed for pin display.
  • Ensure the board surface is soft enough for pin insertion but rigid enough for stability.

flowchart TD
    A[Display Stand] --> B[Size]
    B --> B1[910 mm x 910 mm]
    B --> B2[1220 mm x 1220 mm]
    A --> C[Material]
    C --> C1[Perforated Board]
    C --> C2[Straw Board]
    A --> D[Type]
    D --> D1[Single-sided]
    D --> D2[Double-sided]

Use these specifications for design and procurement of display stands per IS 1829 Part 1.

IS 1829 Part 1: Surface Finishes and Paints Key Points

1. Finish Quality (Clause 16.2):

• Finish must be smooth, uniform, and defect-free.
• Should be well-based, not chip or flake easily.
• Dry film thickness ≥ 0.10 mm.

2. Paint Standards (Clause 2.8):

• Paints, enamels, varnishes must conform to relevant Indian Standards for both air-drying and stoving finishes.

3. Colour Finishing (Clause 16.3):

• Other components finished in colour agreed between purchaser and manufacturer.

4. Stoving Enamels/Paints (Clause 16.1.1):

• Components must be stored at manufacturer-recommended temperature and duration after stoving.

Summary Table: Surface Finish Requirements

For detailed paint specifications, refer to relevant IS codes like IS 2932 (Paints and Varnishes).

flowchart LR
    A[Component] --> B[Surface Preparation]
    B --> C[Application of Paint/Enamel]
    C --> D[Drying or Stoving]
    D --> E[Storage at recommended conditions]
    E --> F[Finished Product with smooth, uniform finish]

This ensures compliance with IS 1829 Part 1 for library furniture finishes.

IS 1829 Part 1: Environmental and ECO Mark Requirements

• ECO Mark Conformance (Clause 17.2):
  The product must meet ECO Mark-specific requirements as per relevant clauses.
  Manufacturer’s responsibility: Submit documentary evidence (certificate/declaration) to BIS for ECO Mark application.

• Environmental Consent (Clause 17.1.2):
  Manufacturer must have environmental clearance from the State Pollution Control Board under:

  • Water (Prevention and Control of Pollution) Act, 1974
  • Air (Prevention and Control of Pollution) Act, 1981
  • Authorization under Environment (Protection) Act, 1986 (if applicable).

• Particle Board Specification for ECO Mark (Clause 2.1):
  Particle boards must comply with IS 3087:1985 (Medium density wood particle board for general purposes) for ECO Mark certification.

Summary Table for ECO Mark Compliance

Note: No direct formulas are specified; compliance is based on certification and adherence to referenced standards and environmental laws.