Code of practice for construction of floor and roof with joists and filler blocks, Part 2: With hollow clay filler blocks

IS 6061 Part 2 – Scope Summary

Scope:
IS 6061 Part 2 primarily covers specifications and code of practices related to flooring and roofing materials including structural clay products, bitumen mastic flooring, rubber floors, linoleum, terrazzo, cement concrete tiles, epoxy resin toppings, PVC sheet flooring, burnt clay brick flooring, and waterproofing techniques.

Key Points from the Scope:

• Referenced Standards:

  • IS 2248-1969 (Definitions for structural clay products)
  • IS 3951 (Part I)-1975 (Specifications for hollow clay tiles)

• Information Exchange:
  Clause 3.3 emphasizes the importance of proper communication between designer, builder, and user throughout construction.

• Code of Practices Included:

  • Bitumen mastic flooring
  • Rubber floors
  • Linoleum floors
  • Cement concrete flooring tiles
  • Terrazzo floor finish
  • Flat roof finish (Mud Phuska)
  • In situ cement concrete flooring
  • Epoxy resin floor toppings
  • Flexible PVC flooring
  • Burnt clay brick flooring
  • External rendered finishes
  • Cement and cement-lime plaster finishes
  • Waterproofing with bitumen felts and polyethylene film
  • Lime concrete for waterproofed roofs

Typical Application Flow (Mermaid Diagram):

flowchart LR
    A[Designer] --> B[Specify Material & Flooring Type]
    B --> C[Builder]
    C --> D[Construction Stage]
    D --> E[User]
    E --> F[Feedback & Maintenance]
    F --> A

Summary:

• IS 6061 Part 2 sets material and workmanship standards for various flooring and roofing finishes.
• Ensures uniformity and quality in construction.
• Facilitates coordination among stakeholders for successful project delivery.

For detailed formulas or tables, refer to the specific part or code of practice within IS 6061 Part 2 related to the material or flooring type of interest.

IS 6061 Part 2 – Definitions & Key Information

• Definitions: As per Clause 2.1, definitions are adopted from:

  • IS 2248-1969: Glossary of terms for structural clay products.
  • IS 3951 (Part I)-1975: Specification for structural hollow clay tiles (filler type).

• Key Information for Design (Clause 3.1): For designing hollow clay filler block roofs/floors, gather:

  • Total area and individual room/column grid sizes.
  • Details of supporting elements (framed structure or load-bearing walls).
  • Superimposed loads.
  • Finished floor/roof level.
  • Junction treatments with walls/parapets.
  • Roof slope for drainage.
  • Fixing provisions for services and ceilings.
  • Openings in the floor/roof.

• Communication (Clause 3.3): Ensure proper info exchange between designer, builder, and user at all construction stages.

Summary Table: Essential Design Inputs

flowchart LR
    A[Designer] --> B[Builder]
    B --> C[User]
    C --> A
    style A fill:#f9f,stroke:#333,stroke-width:2px
    style B fill:#bbf,stroke:#333,stroke-width:2px
    style C fill:#bfb,stroke:#333,stroke-width:2px

This cycle ensures smooth coordination throughout construction per IS 6061 Part 2.

IS 6061 Part 2 – Necessary Information for Design and Construction

For efficient design and construction of hollow clay filler block floors/roofs, the following key information must be provided (Clause 3.1):

• Total area to be covered
• Individual room sizes or column grid dimensions
• Supporting elements: framed structure or load-bearing walls, including their dimensions and restrictions
• Superimposed loads: live, dead, and imposed loads to be carried
• Finished floor/roof level
• Details of junctions: connections with walls or parapets
• Slope provision: for roof drainage
• Provisions for fixing: services, ceilings, etc.
• Openings: size and location in floor or roof

Additional guidelines:

• Ensure proper exchange of information among designer, builder, and user at all construction stages (Clause 3.3).
• Follow rounding rules for numerical values as per the standard.

This data ensures safe, functional, and durable floor/roof design per IS 6061 Part 2.

flowchart TD
    A[Design Requirements] --> B[Area & Room Sizes]
    A --> C[Support Details]
    A --> D[Load Specifications]
    A --> E[Finished Level]
    A --> F[Junction Treatments]
    A --> G[Slope for Drainage]
    A --> H[Fixing Provisions]
    A --> I[Openings]
    A --> J[Information Exchange]

IS 6061 (Part 2) - 1981: Materials Key Points

This part of IS 6061 primarily references materials related to structural clay products and flooring finishes, with specifications and codes of practice for various materials and finishes.

Key Specifications & References:

• Structural Hollow Clay Tiles: Specification for filler type tiles used in floors and roofs (Part I, first revision).
• Material Definitions: As per IS 2248-1969 and IS 3951 (Part I)-1975 for clay products.
• Flooring Materials: Codes of practice exist for:
  • Bitumen mastic flooring
  • Rubber floors
  • Linoleum floors
  • Cement concrete flooring tiles
  • In situ terrazzo and cement concrete flooring
  • Epoxy resin floor toppings
  • Flexible PVC sheet and tile flooring
  • Burnt clay brick flooring
• Roof Finishes & Waterproofing:
  • Flat roof finish (Mud Phuska)
  • External rendered finishes
  • Cement and cement-lime plaster finishes
  • Waterproofing with bitumen felts and polyethylene films
  • Lime concrete for waterproofed roof finish

Important Notes:

• Material exchange between designer, builder, and user is emphasized (Clause 3.3).
• Rounding off numerical values must follow revised rules.
• Refer to respective IS codes for detailed material properties and mix designs.

Typical Material Properties for Structural Clay Tiles (from IS 2248):

Example: Bitumen Mastic Flooring Composition

• Bitumen: 60-70%
• Filler (sand, stone dust): 30-40%
• Thickness: 6-10 mm

flowchart LR
    Designer -->|Material specs| Builder
    Builder -->|Material info| User
    User -->|Feedback| Designer

This ensures proper communication of material requirements and quality control during construction.

IS 6061 Part 2: Precast Concrete Joists & Hollow Clay Filler Blocks Floor/Roof

Key Components (Clause 5.1.1)

• Precast RCC prestressed joists spaced suitably.
• Hollow clay filler blocks placed between joists.
• Cast-in-situ topping concrete with reinforcement.
• Floor finish on top.
• Ceiling finish below (optional).

Joist Dimensions (Clause A-1.1)

• Uniform width.
• Length & depth vary with span and filler block depth.

Hollow Clay Blocks Placement (Clause 5.5.4)

• Blocks rest on projecting lips of joists (see Fig. 1).
• Ensures load transfer and stability.

Typical Section (Fig. 1)

graph TD
    A[Floor Finish] --> B[Topping Concrete (cast-in-situ)]
    B --> C[Hollow Clay Filler Blocks]
    C --> D[Precast RCC Joists]
    D --> E[Ceiling Finish (optional)]

Design & Specifications Reference

• Use IS 383 for aggregates.
• Use IS 269/IS 455/IS 1489 for cement types.
• Use IS 432/IS 1786 for reinforcement steel.
• Hollow clay blocks per IS 4885 Part I.

Important Notes

• Joist spacing depends on load & span.
• Topping thickness typically 40-50 mm.
• Reinforcement in topping to control cracking.
• Ensure proper bearing of blocks on joists for load transfer.

For detailed design, refer to IS 6061 Part 2 tables and span charts specific to joist sizes and block dimensions.

IS 6061 Part 2 (1981) — Finishing of Floor and Ceiling

Key Specifications (Clause 6.1 & 6.1.1)

• Floors/roofs are finished per relevant IS codes (see table below).
• Floor finish types and their IS codes:

Structural Composition (Clause 5.1.1)

• Precast prestressed concrete joists spaced suitably.
• Hollow clay filler blocks between joists.
• In situ topping concrete with reinforcement over blocks.
• Floor finish applied on top.
• Ceiling finish optionally applied below.

Typical Floor Section (Mermaid Diagram)

graph TD
    A[Ceiling Finish (optional)] --> B[Precast Prestressed Concrete Joists]
    B --> C[Hollow Clay Filler Blocks]
    C --> D[Topping Concrete with Reinforcement]
    D --> E[Specified Floor Finish]

Notes:

• Refer to respective IS codes for detailed material specs and application methods.
• Reinforcement and topping thickness depend on load and span (see IS 456 for concrete design).

This framework ensures durable, standardized floor and ceiling finishes per Indian standards.

Key Specifications for Precast Reinforced Concrete Joists (IS 6061 Part 2)

1. Reinforcement (Clause 2.2)

• Follow IS 456-1978 for reinforced concrete or IS 1343-1980 for prestressed concrete reinforcement.
• Reinforcement detailing must ensure adequate bonding, anchorage, and spacing.

2. Dimensions (Clause 1.1)

• Joists must have uniform width.
• Length and depth vary based on:
  • Span length
  • Depth of filler blocks

3. Casting, Curing, and Maturing (Clause A-3 & 4.4)

• Casting: Use proper formwork ensuring dimensional accuracy.
• Curing: Maintain moisture for at least 7 days (preferably 14) to achieve desired strength.
• Maturing: Allow adequate time before handling or stressing (for prestressed joists).

4. Handling and Placement (Clause 5.5.1)

• Place joists at designed spacing.
• Joists should span between supporting elements like walls or beams.
• Use proper lifting devices to avoid damage.

Typical Curing Time & Strength Gain (IS 456 Reference):

Basic Handling Guidelines:

• Avoid sudden shocks.
• Support joists uniformly during storage.
• Stack with spacers to prevent deformation.

flowchart LR
    A[Casting] --> B[Curing (7-14 days)]
    B --> C[Maturing]
    C --> D[Handling & Storage]
    D --> E[Placement at Site]

For detailed reinforcement and mix design, refer to IS 456 and IS 1343.