Bangladesh National Building Code (BNBC) – 2020

Course Presentation

1. Department of Environmental Science and Engineering Jatiya Kabi Kazi Nazrul Islam University Trishal-2224, Mymensingh Bangladesh National Building Code (BNBC) – 2020 Submitted By, Saida Islam Sejuti ID no: 18103432 Reg no: 6829 4 th Year, 2 nd Semester (2017-18) Submitted To, Dr. Md. Badiuzzaman Khan Professor and Former Head Department of Environmental Science Bangladesh Agricultural University Course Name: Environmental Planning and Design Course Code: ESE 4203 Presentation on

2. Outline of the Presentation Introduction to BNBC 2020 Volume 1 Part 1: Scope and Definition Part 2: Administration and Enforcement Part 3: General Building R equirements, Control and Regulation Part 4: Fire Protection Part 5: Building Materials Volume 2 Part 6: STRUCTURAL DESIGN Volume 3 Part 7: Construction Practices and Safety Part 8: Building Services Part 9: Alteration, Addition to and Change of Existing Buildings Part 10: Signs and Outdoor Display Conclusion

3. Introduction to BNBC 2020 History of Building Codes in Bangladesh The Building Construction Act was enacted in 1952 The first draft building code was drafted in1993 by HBRI. The BC Act 1952 was amended in 2006 by giving power to make Bangladesh National Building Code. BNBC was enacted through a Statutory Regulatory Order (SRO) in 2006. HBRI undertook BNBC updating project in 2009. Final version of the updated code was submitted in 2015. Final version has already been approved by the steering committee and the Ministry of Housing and Public Works and vetted by the Law Ministry. The updated code was gazette on February 2021.

4. Introduction to BNBC 2020 Act 318-08 ACI 318M-08:Building Code Requirements for Reinforced Concrete, 2008 AISC 360-05 Specifications for structural Steel Buildings. ASCE 7-05 ASCE/SEI 7-05: Minimum Design Loads for Buildings and Other Structures. EURO CODE Eurocode 8: Design of Structures for earthquake resistance.

5. Introduction to BNBC 2020 BNBC in 3 Volumes Part 1: SCOPES AND DEFINITION Part 2: ADMINISTRATION AND ENFORCEMENT Part 3: GENERAL BUILDING REQUIREMENTS, CONTROL AND REGULATION Part 4: FIRE PROTECTION Part 5: BUILDING MATERIALS Volume 1 Part 6: STRUCTURAL DESIGN Volume 2 Part 7: CONSTRUCTION PRACTICE AND SAFETY Part 8: BUILDING SERVICES Part 9: ADDITION, ALTERATION TO AND CHANGE OF USE OF EXISTING BUILDINGS Part 10: SIGNS AND OUT-DOOR DISPLAY Volume 3

6. VOLUME - 1

7. Part 1: SCOPE AND DEFINITION Chapter 1 Chapter 2 Chapter 3

8. Part 2: ADMINISTRATION AND ENFORCEMENT Chapter 1 Chapter 2 Chapter 3

9. Part 3: GENERAL BUILDING REQUIREMENTS, CONTROL AND REGULATION Chapter 4 Energy Efficiency and Sustainability

10. OCCUPANCY CLASSIFICATION A: Residential B: Educational Facilities C: Health Care Facilities E: Business F: Mercantile G: Industrial Buildings H: Storage Buildings I: Assembly J: Hazardous Building K:Garage Miscellaneous

11. CLASSIFICATION OF BUILDING CONSTRUCTION TYPE BASED ON FIRE RESISTANCE GROUP I: Noncombustible Subdivision: Type I-A: 4-hour fire Protected Type I-B: 3-hour fire Protected Type I-C: 2-hour fire Protected Type I-D: 1-hour fire Protected Type I-E: Unprotected GROUP II: Combustible Subdivision: Type II-A: Heavy timber Type II-B: Protected wood joist Type II-C: Unprotected wood joist Type II-D: Protected wood frame Type II-E: Unprotected wood frame

12. Part 4: Fire Protection Chapter 1: General Provisions Chapter 2: Precautionary Requirements Chapter 3: Means of Egress Chapter 4: Equipment and In-built Facilities Standards Chapter 5: Specific Requirements for Fire Detection and Extinguishing System

13. Part 5: Building Materials Masonry Cement and concrete Pre-stressed concrete Building limes Gypsum based materials and plaster Flooring materials Steel Timber and wood products Doors, windows and ventilators Aluminum and aluminum alloys Builders hardware Roof coverings Paints and varnishes Sanitary appliances and water fittings Miscellaneous materials CGI sheet roofing and walling

14. VOLUME - 2

15. Chapter 1: Definitions and General Requirements Chapter 8: Detailing of Reinforced Concrete Structures Chapter 2: Loads on Buildings and Structures Chapter 9: Prestressed Concrete Structures Chapter 3: Soils and Foundations Chapter 10: Steel Structures Chapter 4: Bamboo Chapter 11: Timber Chapter 5: Concrete Material Chapter 12: Ferrocement Structures Chapter 6: Strength Design of Reinforced Concrete Structures Chapter 13: Steel-concrete Composite Structural Members Chapter 7: Masonry Structures Part 6: STRUCTURAL DESIGN

16. VOLUME - 3

17. Part 7: Construction Practices and Safety

18. Part 8: Building Services Chapter 1: Electrical and Electronic Engineering Services for Buildings Chapter 2: Air-conditioning, Heating and Ventilation Chapter 3: Building Acoustics Chapter 4: Lifts, Escalators and Moving Walks Chapter 5: Water Supply Chapter 6: Sanitary Drainage Chapter 7: Rainwater Management Chapter 8: Fuel Gas

19. Part 9: Alteration, Addition to and Change of Existing Buildings Chapter 1 Chapter 2 Chapter 3

20. Part 10: Signs and Outdoor Display Chapter 1 Chapter 2 Chapter 3

21. …..T H A N K Y O U….. Conclusion Bangladesh National Building Code 2020 is a proper strategical guidance for establishing or constructing a safe and sound concreate or residential structure. And that is why, we must need a clear knowledge on this BNBC 2020 while planning for any construction activities and follow it for our own protection purposes as well.