Byelaws for the construction of cinema buildings
1986 Edition

Overview of Scope in IS 4878

Clause 1: This standard specifies design, construction, and safety requirements applicable to both permanent and semi-permanent cinema buildings.

Important Provisions:

• Material Specifications (Clause 3.7.2.5): All material details including type and grade must be documented and signed by a certified architect or engineer, as per Appendix D.
• Submission of HVAC Plans (Clause 13.2.2): HVAC system drawings and specifications must be presented to the regulatory authority when requested.
• Standard Drawing Sizes and Codes (Clause 3.7.2.1): Drawing sheets should conform to specified dimensions and color codes.

Summary:

• Comprehensive documentation including material specs and HVAC details is mandated.
• Drawings must follow set size standards.
• All specifications require endorsement by qualified professionals.
• Refer to Appendix D for application formats and submission instructions.

flowchart LR
  A[Initiate Cinema Building Design] --> B[Prepare Plans & Specs]
  B --> C{Are Material Specs Included?}
  C -- Yes --> D[Sign by Licensed Architect/Engineer]
  D --> E[Submit Notice & Documents]
  C -- No --> F[Revise Specifications]
  E --> G[Submit HVAC Plans if Needed]
  G --> H[Authority Reviews]
  H --> I[Construction Approval]

Summary of Key Definitions in IS 4878

• Clause 2.0: Provides definitions for terms related to air-conditioning and heating systems to maintain clarity and uniformity.
• Material Specifications (Clause 3.7.2.5): All general and detailed specifications must clearly outline the material types and grades and be endorsed by a licensed architect or engineer, accompanying the construction notice as described in Appendix D.
• HVAC Documentation (Clause 13.2.2): All HVAC-related plans and data must be submitted to the appropriate authority upon request.

Practical Advice:

Always consult Appendix D for detailed specification formats to ensure full compliance.

flowchart LR
  A[Design Stage] --> B[Prepare Specs]
  B --> C{Include Material Type & Grade?}
  C -- Yes --> D[Sign by Licensed Architect/Engineer]
  D --> E[Submit with Construction Notice]
  E --> F[Authority Approval]

IS 4878: Administrative Procedures and Permit Requirements

Administration (Clause 3)

• Overseen by local licensing authorities such as Executive Engineers and municipal licensing bodies.
• Strict adherence to zoning laws (Clause 2.56) is required.
• Material and design specifications signed by qualified professionals must accompany construction notices (Clause 3.7.2.5).

Permit Documentation (Appendices Overview)

Specifications (Clause 3.7.2.5)

• Must include detailed material type and grade.
• Require signature from licensed professionals.
• Guarantee compliance and safety.

Administrative Workflow

flowchart TD
  A[Submit Construction Notice (Appx A)] --> B[Provide Specifications (Clause 3.7.2.5)]
  B --> C[Apply for Permit/License (Appx D)]
  C --> D[Permit Granted or Denied (Appx G)]
  D -->|If Approved| E[Notify Commencement (Appx H)]
  E --> F[Supervision & Compliance (Appx E)]
  F --> G[Completion Certificate Issued (Appx J)]
  G --> H[Occupancy Certificate Granted (Appx K)]

IS 4878 Regulations on Off-Street Parking (Appendix L & Clause 8.1)

Highlights:

• Off-street parking must conform to Appendix L and local Development Control Rules.
• Parking includes space for vehicles plus access driveways (Clause 2.42).

Parking Dimensions as per Appendix L:

• Driveways must facilitate smooth vehicle movement without reversing onto public roads.
• Layout should allow clear maneuvering space.

Parking Area Calculation Formula:

[ \text{Total Parking Area} = N \times (L \times W) + \text{Driveway Area} ] Where:

• (N) = number of parking spaces
• (L) and (W) = length and width of each parking bay

flowchart LR
  A[Entrance/Exit Point] --> B[Driveway (≥3m wide)]
  B --> C[Designated Parking Bays]
  C --> D[Vehicle Parking]

Summary of Height Limitations in IS 4878

• Clause 7.2: Specifies maximum height and number of floors based on:
  • Floor Area Ratio (FAR) restrictions
  • Required open spaces (Clause 5)
  • Width of the street adjoining the plot

Height Limits by Street Width:

Additional Notes:

• Extensions permitted only if open space requirements (Clause 6.1) remain satisfied.
• Height controls optimize light, ventilation, and safety.
• Street width considerations prevent overcrowding and fire risk.

FAR Calculation:

[ \text{FAR} = \frac{\text{Total floor area across all levels}}{\text{Plot area}} ]

Building height and storeys are controlled to maintain FAR within permissible limits.

flowchart TD
  A[Plot with Adjacent Street Width] --> B{Street Width}
  B -->|<5m| C[Low Height Restriction]
  B -->|5m to <6.7m| D[Medium Height Restriction (≤6.7m)]
  B -->|≥6.7m| E[Higher Height Allowed]
  E --> F[Check FAR and Open Space]
  F --> G[Approve Building Height]

IS 4878: Specifications for Building Components and Facilities

HVAC and Facility Requirements (Clauses 13.2.2 & 13.2.3)

• All HVAC system plans and specifications must be submitted for official approval.
• Plans should detail:
  • Building identifiers (name, type, location)
  • Owner's information
  • North orientation
  • Room sizes, heights, and intended functions
  • Construction details for walls, roofs, floors, windows, doors including insulation and finishes
  • HVAC plant layout: cooling towers, ducts, air distribution, refrigeration, and heating units
  • Location and type of air supply dampers
  • Chimney and vent dimensions and placement
  • Internal load details such as occupants, motors, heaters, lighting
  • Fire separation locations and fire-resistance ratings

Construction Practices (Clause 12.1)

• Follow SP:7-1983 guidelines for construction safety, material handling, and demolition.

HVAC Plan Requirements Overview

flowchart TD
  A[Building & Owner Info] --> B[Room Details & Use]
  B --> C[Construction Details]
  C --> D[HVAC Plant Layout]
  D --> E[Airflow & Dampers]
  E --> F[Load Calculations & Fire Separation]
  F --> G[Submit for Approval]

IS 4878: Guidelines on Access and Exit Provisions

Means of Access (Clause 4.1.1, Table 4)

• Minimum widths of access ways depend on their length:

• The width of access must not be smaller than internal passageways.

Exit Capacity (Clause 10.3.2)

• Exit widths must be sufficient for occupant evacuation.
• Calculated based on occupant numbers and unit width per person (e.g., 0.5 m per 60 persons).

Exit Arrangement (Clause 10.3.3)

• Exits should provide safe, direct, and unobstructed evacuation routes.
• Multiple exits are required for large audiences to prevent congestion.

Types of Egress (Clause 10.1)

• Doors, staircases, ramps, and other approved egress routes must comply with fire safety and accessibility standards.

flowchart LR
  A[Determine Occupant Load] --> B[Calculate Exit Width]
  B --> C{Access Length}
  C -->|≤200m| D[Width = 12m]
  C -->|≤400m| E[Width = 15m]
  C -->|≤600m| F[Width = 18m]
  C -->|>600m| G[Width = 24m]
  D & E & F & G --> H[Compare with Internal Access Width]
  H --> I[Establish Final Access Width]

IS 4878: Specifications for Seating and Lifts

Seating Specifications (Clause 13.5)

• Seat Width:
  • Average width should be at least 50 cm.
  • Minimum width not less than 45 cm (Clause 13.5.2).
• Legroom (Intervening Space):
  • Minimum perpendicular distance between the back of one seat and the front of the next is 30.5 cm (Clause 13.5.4).

Elevator Requirements (Clause 13.6)

• The standard requires appropriate lift provisions to ensure accessibility and safety.
• While precise formulas are not provided, typical design considerations include:
  • Lift capacity based on occupant load.
  • Minimum dimensions to accommodate users including those with disabilities.
  • Compliance with accessibility standards such as IS 14665.

Seating Dimension Summary

flowchart TD
  A[Design Seating] --> B[Ensure Seat Width ≥ 45 cm]
  A --> C[Maintain Average Seat Width ≥ 50 cm]
  A --> D[Provide Legroom ≥ 30.5 cm]
  E[Provide Lifts] --> F[Capacity per Occupant Load]
  E --> G[Minimum Car Size]
  E --> H[Accessibility Compliance]

IS 4878 Electrical Installation Guidelines

Design Factors (Clause 14.2.1.1)

When designing electrical systems, consider:

• Supply characteristics, occupancy type, load, and earthing arrangements.
• Environmental conditions including temperature, humidity, and corrosiveness.
• Risks from flammable or explosive materials.
• Required levels of electrical and mechanical protection.
• Continuity of service and need for backup supply.
• Potential future modifications or expansions.
• Operating and maintenance costs.
• Comparative cost of alternative installation methods.
• Suppression of radio and telecommunication interference.
• Ease of maintenance.
• Safety requirements.
• Energy efficiency measures.

Reference Codes

• Detailed layouts for equipment like substations and switchboards are covered in SP:7-1983, Part VIII, Section 2.
• Lift electrical planning is detailed in SP:7-1983, Part VIII, Section 5.

Planning Considerations Summary

For detailed calculations like load analysis and cable sizing, consult SP:7-1983 and IS codes such as IS 732 (wiring) and IS 3043 (earthing).

flowchart LR
  A[Begin Electrical Design] --> B[Assess Supply & Load]
  B --> C[Evaluate Environmental Factors]
  C --> D[Define Protection Levels]
  D --> E[Plan for Continuity & Backup]
  E --> F[Consider Future Extensions]
  F --> G[Analyze Costs & Interference]
  G --> H[Implement Safety & Energy Conservation]
  H --> I[Refer to SP:7-1983]
  I --> J[Finalize Electrical Design]

IS 4878 Fire Protection Overview

Fire Resistance (Clause 15.1.2)

• Refer to Table 3 for fire resistance ratings based on material and construction.
• Load-bearing concrete elements typically require 2 to 4 hours rating.
• Brick load-bearing walls require 1 to 2 hours.
• Non-load-bearing walls require at least 1 hour.
• Protected steel components need 2 to 3 hours.

Fixed Fire Fighting Equipment (Clause 15.10)

• Systems must follow national standards like IS 3844 and IS 15105.
• Includes sprinklers, hydrants, and portable extinguishers.
• Ensure adequate water pressure and coverage tailored to building size.

Fire Alarm Systems (Clause 14.6)

• Audio-visual alarm systems should comply with SP:30-1984.
• Alarms must be loud and clear to ensure prompt evacuation.

Fire Resistance Ratings (Excerpt from Table 3)

flowchart LR
  A[Fire Safety] --> B[Fire Resistance Ratings]
  A --> C[Installed Fire Fighting Systems]
  A --> D[Audio-Visual Fire Alarms]
  B --> E[Structural Elements]
  B --> F[Non-Structural Elements]
  C --> G[Sprinkler Systems]
  C --> H[Fire Hydrants]
  C --> I[Portable Extinguishers]
  D --> J[Alarm Systems per SP:30-1984]

IS 4878 Water Supply and Sanitation Guidelines

• Clause 16.3: Requires design and maintenance per SP:7-1983, Part IX on Plumbing Services.
  • Section 1 covers water supply.
  • Section 2 addresses drainage and sanitation.

Key Plumbing Parameters (SP:7-1983)

Basic Equations

• Water Demand (Q): [ Q = \text{Population} \times \text{Demand per capita} ]
• Flow Velocity in Drain Pipes: [ V = \frac{4Q}{\pi d^2} ] where (d) = pipe diameter, (Q) = flow rate
• Slope for Self-Cleaning Velocity: [ S = \frac{V^2}{2gR} ] where (R) is hydraulic radius and (g) is gravity acceleration

flowchart TD
  A[Water Supply Design] --> B[Calculate Demand]
  B --> C[Select Pipe Sizes]
  C --> D[Distribution Network]
  A --> E[Storage Provisions]
  F[Drainage Design] --> G[Trap & Vent Systems]
  G --> H[Pipe Slopes & Diameters]
  H --> I[Sewage Disposal]

IS 4878 Maintenance and Cleanliness Requirements (Clause 17.5)

• Ventilation: All windows and ventilation openings must be kept in proper working condition.
• Sanitation: The entire cinema building must be maintained in hygienic condition.
• Wall Treatment: Hot lime washing should be done at least once every two years or as advised.
• Cleaning Frequency: Premises and waste removal should occur at least every 24 hours or more often if needed.
• Electrical Equipment: Fans, glass fixtures, and shades need regular cleaning to remain presentable.
• Mechanical Equipment: Exhaust fans, air conditioning units, and lifts require periodic inspection and cleaning.
• Fire Fighting Installations: Regular checks to ensure functionality.
• Storage Tanks: Should be inspected and cleaned periodically.

Fresh Air Supply for Air Conditioning (Clause 13.2.6)

• Minimum outside air supply must be proportional to occupant count and room volume.

flowchart TD
  A[Maintenance Tasks] --> B[Maintain Windows & Vents]
  A --> C[Sanitary Upkeep & Waste Removal]
  A --> D[Periodic Hot Lime Washing]
  A --> E[Clean Electrical Devices]
  A --> F[Inspect Mechanical Systems]
  A --> G[Check Fire Fighting Equipment]
  A --> H[Clean Storage Tanks]

IS 4878: Guidelines on Semi-Permanent Cinema Buildings

Definition (Clause 2.48)

• Structures built using non-combustible materials.
• Side walls comprise approximately 1.0 m high plastered masonry.
• Above these walls, coverings of durable black canvas or tarpaulin curtains are used to block light and rain.

Planning & Safety Requirements (Clause 19.1)

• Must include considerations for:
  • Traffic loads and parking provisions.
  • Fire safety measures.
  • Building services such as electrical and ventilation systems.
  • Water supply and drainage.
  • Safety standards aligned with those for permanent cinema buildings.

Specifications Summary:

Notes:

• The standard does not provide explicit load calculation formulas for semi-permanent structures.
• Load and fire safety calculations should follow guidelines for permanent cinema buildings or relevant IS codes such as IS 875 for loads and IS 1641 for fire safety.
• Adequate drainage and ventilation must be ensured to prevent moisture and heat accumulation.

flowchart TD
  A[Semi-Permanent Cinema] --> B[1.0 m Plastered Walls]
  A --> C[Canvas/Tarpaulin Cover]
  A --> D[Use Non-Combustible Materials]
  A --> E[Apply Permanent Cinema Safety & Service Standards]
  E --> F[Manage Traffic & Parking]
  E --> G[Implement Fire Safety]
  E --> H[Ensure Water & Drainage]

IS 4878: Occupancy Certificate Form Details (Appendix K)

This certificate confirms that the cinema building is fit for occupancy, conforming to all relevant safety and regulatory byelaws.

Key Elements:

• Building Information: Plot number, location specifics including street/road and colony or bazar.
• Supervision: Construction completed under licensed architect or engineer supervision, including license number.
• Inspection: Official authority inspects and certifies compliance with structural integrity, fire safety, and sanitary conditions.
• Declaration: Confirms building suitability for occupation in accordance with byelaws.

Sample Format:

I hereby certify that the erection or material alteration of the cinema building located on plot No. ___, street/road ___, colony/bazar ___, supervised by licensed architect/engineer License No. ___, has been inspected and found to comply with all relevant byelaws regarding structural safety, fire protection, hygiene, and sanitation, and is hereby declared fit for occupation.

Signed,

[Authority Signature]

Related Forms:

• Appendix J: Completion Certificate verifying construction per approved plans.
• Appendix F: Qualifications for licensed architects and engineers.

Issued by licensing or local authority after satisfactory inspection.

flowchart TD
  A[Construction Completed] --> B[Supervised by Licensed Architect/Engineer]
  B --> C[Completion Certificate Issued (Appendix J)]
  C --> D[Inspection by Licensing Authority]
  D --> E[Occupancy Certificate Issued (Appendix K)]
  E --> F[Building Ready for Use]