BNBC-2017 Volume-3 DRAFT.pdf - 5 $)7 Volume 3 of 3 Volum(Part 7 to Part 10 Housing and Building Research Institute Not yet officially approved by

BNBC-2017 Volume-3 DRAFT.pdf - 5 $)7 Volume 3 of 3...

This preview shows page 1 out of 512 pages.

You've reached the end of your free preview.

Want to read all 512 pages?

Unformatted text preview: ' 5 $ )7 Volume 3 of 3 Volum (Part 7 to Part 10) Housing and Building Research Institute Not yet officially approved by Bangladesh Govt. ), 1 $ / BANGLADESH NATIONAL BUILDING CODE 2017 ORGANIZATION AND FORMAT OF THE CODE Bangladesh National Building Code (BNBC) 2017 consists of 10 (ten) Parts published in 3 (three) Volumes of books as follows: PART 1 SCOPE AND DEFINITION PART 2 ADMINISTRATION AND ENFORCEMENT PART 3 GENERAL BUILDING REQUIREMENTS, CONTROL AND REGULATION PART 4 FIRE PROTECTION PART 5 BUILDING MATERIALS Volume 2 / STRUCTURAL DESIGN $ PART 6 1 Volume 3 CONSTRUCTION PRACTICES AND ND D SAFETY PART 8 BUILDING SERVICES PART 9 ION TO T AND ND CHANGE CH C ADDITION, ALTERATION OF USE OF EXISTING BUILDINGS PART 10 T-DOOR DIS DISPL SIGNS AND OUT-DOOR DISPLAY ' 5 $ )7 ), PART 7 Part 1 and portion of Part 2 (Chapter apter pter 1 and Cha Chapter Ch 2) are formatted as to the style of legal documents and Chapter 3 of Part 2 followed the usual format form of the Code containing Part, Chapter and page numbers. All pages of Part 1 and Part 2 are continuo continuously numbered. continuou P Pa 10), Chapters and pages are numbered separately for each Part. Page For rest of the Codee (Part 3 to Part num numb numbers consist of two numbers separated by a hyphen. First number denotes Part number and second number represents page number of that Part. Sections are continuously numbered within a Chapter having e nu the first digit as Chapter number. Table and Figure numbers consist of three digits separated by periods. The first digit represents Part number, second digit Chapter number and the last digit Table/Figure number. Headers and Footers are so arranged that opening the Code, the reader can understand which Part and Chapter the page belongs. A Summary Table of Contents listing all the Chapters of the Code is provided at the beginning of the Code. A detail Table of Contents is provided separately for each Part. An index referring definitions of different terminologies used in the Code is provided at the end of each volume. Not yet officially approved by Bangladesh Govt. Volume 1 housing sector turned out to be a profitable business. As a result building construction activities were taken up by real-estate developers following which new trends developed in building planning and construction. Some real-estate developers engaged professional people such as Architects, Engineers, Planners to make their buildings more attractive to the buyers and the code started finding its use among the professionals. However, some owners and developers retained the habit of the old method of construction giving rise to unplanned growth of structures in the urban areas. During this time some high rise structures failed to perform satisfactorily due to structural failure / fire hazard d which caused alarm among the urban dwellers as wellll as the policy polic makers. The policy makers, therefore felt lt the urgency of o updating the BNBC 1993 to make its contents worthy and also to bring it under ntents time w strict legal egal coverage tto make its provisions binding to all involved design, construction and use. volved olved in the planning, pla plan construction sector was first brought into a The building co framework through enactment of Building legal fram frame Construction Act 1952. By the power given by the Act, the Construc Construct Government of Bangladesh has promulgated regulations Go Gover which were amended from time to time. In 2006 the wh Building Construction Act was amended to include a new Section 18A empowering the Government to promulgate the Building Code as a legally binding document. Since its publication, BNBC 1993 has been referred to and consulted by the professionals and designers in the field of building design and construction. After the endowment of legal status, importance of the BNBC 1993 has further enhanced. However, unlike other building codes available in the world, the Bangladesh National Building Code has not yet been formally reviewed and updated since it was drafted in 1993. Neither any feedback of the professionals regarding the document has been taken into formal consideration. In the last twenty two years, new materials have been introduced, new scientific methods have emerged, new technologies have evolved and both design of structures and construction practices have gone through enormous changes. Researchers, engineers and academics in Bangladesh have also conducted new studies which enriched our knowledge about planning, design, construction and sustainability of buildings. Ministry of Housing and Public Works formed a steering committee with the responsibility of Updating BNBC 1993 by a G.O. having circular no. Section 8/IM-5/93(part) 812 (28) date: 15.09.2008. The Steering Committee comprises representatives from relevant government agencies, universities and professional societies. The Housing and ' 5 $ )7 ) ,1 $ / In order to provide safe and healthy habitat, all activities related to building construction such as planning, design and construction needs to be regulated properly. Technological and socio-economic developments in recent times have led to remarkable increase in demand for more and more sophistication in buildings resulting in ever increasing complexity. Buildings are products of a multidisciplinary profession involving specialized professional inputs from disciplines like Architecture, Fire prevention, Materials science, Structural engineering, Geotechnical engineering Construction technology, Electrical engineering, Mechanical engineering, Acoustics, Sanitation and plumbing technology, Chemical engineering, Law, etc. It is therefore imperative that a uniform standard of practice covering all aspects of planning, design and construction of buildings, including the service facilities provided in them such as electrical, mechanical, sanitary and other services, be followed to ensure safety, minimization of wastage in construction and optimum return for the user. In the Building code each of the above aspects is addressed adequately by professionalss specializing in the relevant disciplines to ensure safetyy and a comfort of the users of the buildings. In order to regulate the technical details of building construction and to maintain the standard off construction the Bangladesh National Building Code (BNBC) NBC) was w first firs published in 1993. It was a 1000 pagee detailed document doc docum specifying safe and acceptable practices of actices es in all aspects asp building design and construction. ction. Howev However, since its publication, significant changes have nges ges and developments develo taken place in both building uilding technology tech technolo and material properties requiring the state of the art he use of the present pre knowledge and practicess in building buildin planning, design and build construction. To keep pace with the changed pa circumstances, it is a routine practice to update codes. Twenty two years have nearly been elapsed since publication of the first version of the Code. After introduction of the BNBC in 1993, the technology of building construction in Bangladesh remained almost the same for quite some time as was in practice before its publication. The lack of legal provisions in enforcing its use has been the main reason behind it. In the meantime growing demand for home, scarcity of land and the upward trend in the land prices in the urban areas brought in the culture of construction of moderate to high rise structures and changed the prevailing culture of planning, design and construction of buildings in the private sector. Gradually, the urban dwellers began to accept the concept of living in high rise apartment buildings and investment in the i Not yet officially approved by Bangladesh Govt. PREFACE TO BNBC 2017 ii Not yet officially approved by Bangladesh Govt. ), 1 $ / buildings. The updated BNBC contains chapters addressing the issues of energy conservation, rainwater harvesting and distribution mechanisms in buildings. In Part 3, “General Building Requirements, Control and Regulation” a new Chapter titled, “Energy Efficiency and Sustainability” has been included giving minimum code requirements for achieving the efficiency. To reduce energy consumption in building provisions for use of variable refrigeration system in HVAC applications, Variable Voltage, Variable frequency drives in elevator applications has been included in Chapter-2 “Air Conditioning, Heating and Ventilation” of Part-8 “Building Services”. Energy conservation in lighting using energy saving lamps, Fluorescent lamps and GLS lamps has also been proposed in Chapter-1, “Electrical and Electronics Engineering Services for Buildings” uilding of the same part. To augment water supply in Buildings, Chapter-8, “Rainwater Management” Part-8 ement” in PartPart -8 “Building Services” has been included in n the Updated Code containing specific guidelines for orr harvesting, sstorage and distribution of rainwater. Contents already existing in BNBC 1993, ts of tlhe tlhe chapters chapt have revised in the updated version. In ve been thoroughly thorou thoroug some ome cases new ne concepts have been included. For example, Chapter-7 “Masonry structures” of Part 6, the mple, In C concept co pt of ‘Confined Masonry’ is introduced and guidelines for and detailing are provided. f design de In ggeneral up to date information and standards are included in the updated Code in a way which is practicable i by designers and professionals involved in building construction. I acknowledge adoption of provisions of various recognized codes and standards in the present code after a thorough review. Part 2, a practical approach is delineated in administering and enforcement of the Code; which I believe will pave the way in actually implementing the Code provisions and ensure safer building construction in Bangladesh. I gratefully acknowledge contribution of members of the Steering Committee and the Editorial Committees for their active participation and guidance in updating the building code. The process of updating has undergone a rigorous and time-consuming review exercise. I deeply appreciate the diligence and cooperation of the authors during the exhaustive process. Final editing of this huge document has been extremely tedious. We tried to present the entire document in a uniform format. To enhance readability, many figures of the previous version of the code have been redrawn and improved. However, we regret any unintentional editorial or typographical mistakes that may still exist in the code. ' 5 $ )7 Building Research Institute (HBRI) has been entrusted with the task of providing secretarial service to the Steering Committee and managing the implementation of the project. According to an agreement between HBRI and Bureau of Research Testing and Consultancy (BRTC), Bangladesh University of Engineering and Technology (BUET), for the purpose of reviewing and updating the Bangladesh National Building Code 1993, BRTC, BUET deputed leading experts in all relevant fields among academics and professionals. Finally the updated code is available both in printed form and soft copy in CDs and on website. The updated BNBC has 10 parts with a total of 49 chapters. Some parts contain a number of appendices wherein sample calculations, design tables, graphs etc. are provided for use by the readers for important analysis and designs. Part-6 Structural Design has 13 chapters which is the maximum among all the parts. In the contents of the Updated Code, almost all of the topics of BNBC 1993 have been retained. Moreover some of these have been elaborated to accommodate the changes identified during review of the BNBC 1993 and the various codes and documents collected to make their scope wider, up to date and user friendly. Part-6 “Structural Design” in the Updated Code include two new chapters, one on Bamboo Structure and the other on n Steel-Concrete Composite Structures. The formerr is intended for use in the rural areas. The use of well designed esigned and economic bamboo structures is expected ed to be attractive to the rural people. The Steel eel el Concrete composite structures are expected to be widelyy used in the industries. In urban areas this type of structure tructure is expected ex expec to find application in high rise construction. truction. uction. Contrary to the presentation of Geotechnical engineering en in BNBC 1993 wherein it has been treated as “Foundation” having limited scope, in the Updated pdated code cod the chapter on geotechnical engineering has been re-named as “Soils and n reFoundations.” The scope of the proposed “Soils and Foundations” chapter has been made wider by including topics such as ground improvement, geo-textiles, soil reinforcement, slope stability, foundation on problematic soils and sanitary landfills, dewatering, evaluation of liquefaction potential of soils. The new scope of the “Soils and Foundations” chapter is in line with the codes reviewed and requirements of the Geotechnical professionals of the country. Depletion of energy resources and environmental changes is a major concern worldwide. Bangladesh is no exception to it. Keeping these aspects in mind, changes and modifications have been suggested in BNBC 1993 for use of energy saving appliances, non-conventional fuels etc. in Steering Committee Convener (As Chief Architect, Department of Architecture, Government of Bangladesh) Ar. Kazi Golam Nasir Ar. Ahsanul Haque Khan Ar. A.S.M Ismail Ar. Abdus Salam Name & Address Institution of Engineers, Bangladesh n Engr. Md. Ruhul Matin Rum Engr. Moid Uddin Rumi Institute of Architects, Bangladesh ed Ar. Jalal Ahmed olam Nasir Ar. Kazi Golam Institute of Planners, Bangladesh Dr. Akter Mahmud ) Bangladesh University of Engineering & Technology ,1 $ / Representing Not yet officially approved by Bangladesh Govt. Members 5 $ )7 Dept. of Civil Engineering Dept. of Mechanical Engineering ineerin ineering Dept. of Electrical & Electronics Engineering Dept. of Architecture Dept. of Urban and Regional Planning ' Public Works Department rof. Dr. Mehedi Ahmed Ansary Prof. Prof. Dr. Md. Zahurul Haque Prof. Dr. Shahidul Islam Khan Ar. Sheikh Ahsanullah Mojumder Prof. Dr. Ishrat Islam Engr. Ainul Farhad Engr. Md. Abdul Malek Sikder Engr. Abul Kashem Engr. Md. Abdul Mozid Shikder Syed Azizul Haque Rajdhani Unnayan Kartripakkha Engr. Emdadul Islam Engr. Md. Salahuddin Fire Service and Civil Defence Directorate Mr. Md. Zahurul Amin Mia Mr. Bharat Chandra Biswas Mr. Sheikh Md. Mizanur Rahman Department of Environment Dr. Muhammad Sohrab Ali Dr. Engr. Mostafa Kamal Faruk Engr. Md. Shahjahan Bangladesh Standards and Testing Institution Engr. Md. Saidul Islam Engr. Md. Khalilur Rahman iii Ministry of Law, Justice and Parliamentary Affairs Mr. Humayun Farhad Ministry of Home Affairs Mr. Md. Salimullah Geological Survey of Bangladesh Mr. Reshad Md. Ekram Ali Department of Disaster Management Mr. Md. Khorshed Alam Mr. Mohammad Abu Sadeque PEng. Military Engineering Services Maj. Md. Soebur Rahman PEng. Brig. General Habibur Rahman Personal Capacity Engr. Md. Abdus Salam $ Member Secretary ,1 (As Director, Housing and Building Research esearch Institute) Institute Department of Architecture 5 $ )7 ) deque, PEng. Mohammad Abu Sadeque, ossain Engr. Syed Isar Hossain bir Ahm A Bhuy Bhuya Engr. Md. Kabir Ahmed Bhuyan Mainuddin A Engr. Mainudd Ahmed ' nstitute Housing & Building Research Institute iv Ass Associates Ar. Saika Binte Alam Ar. Md. Nafizur Rahman Not yet officially approved by Bangladesh Govt. Mr. Sajjadul Islam Mr. Jalal Ahmed Mr. Farid Aziz / Ministry of Housing and Public Works Editorial Sub-committees Scope and Definitions, Administration and Enforcement Convener Ar. Shah Alam Zahiruddin Members Engr. Md. Ruhul Matin Zahiruddin & Associates Ltd. Siza Court 152, Monipuripara, Tejgaon, Dhaka Flat-D/5, The Reviewra , House-7, Road-51, Block-NW(G) Gulshan-2, Dhaka. Ministry of Law, Justice & Parliamentary Affairs Division Bangladesh Secretariat, Dhaka Ar. Haroon-ur-Rashid House-23, Road-13 Sector-7, Uttara Model Town, Dhaka. Ar. Kazi Golam Nasir Department of Architecture Segun Bagicha, Dhaka $ / Mr. Humayun Farhad Not yet officially approved by Bangladesh Govt. Part 1 and 2: ,1 tion; n; Signs and an Outdoor O Part 3 and 10: General Building Requirements, Control and Regulation; Display Convener Ar. Bashirul Haq Mr. Jahid Hasan Faruki Rajd Rajdhani Unnayan Kortipakha (RAJUK), Dhaka Dept. of Architecture, The University of Asia Pacific, Dhaka ' med d Prof. Dr. Abu Sayeed M Ahmed Part 4: Develo D Urban Development Directorate (UDD) Segunbagi egunb Segunbagicha, Dhaka 5 $ Dr. Khurshid Zabin Hossain Taufique Archite Ar re Dept. of Architecture ET, Dhaka BUET, )7 Members Prof. Dr. Khandaker Shabbir Ahmed ) Bashirul Haq & Associates Ltd. 35-B/2, Indira Road, Dhaka ction Fire Protection Convener Mr. Solaiman Chowdhury Members Ar. Khandaker Tazuddin Fire Service & Civil Defence Department Flat: C-4, 1/G, Paribagh (Beside Paribagh Mosque), Dhaka Arcanum, 70/2, Magh Bazar, Dhaka Ar. Mohammad Foyez Ullah Volume Zero Ltd House-98, Road-25, Block-A, Banani, Dhaka Mr. Bharat Chandra Biswas Bangladesh Fire Service & Civil Defense Department Kazi Alauddin Road, Dhaka Prof. Dr. Md. Maksud Helali Dept. of Mechanical Engineering BUET, Dhaka v (a) Building Materials (Masonry, Steel, Cement, Concrete, Building Limes, Timber & Wood ) : Construction Related Material/ Structural Convener Prof. Dr Shamim Z Bosunia Apt-501, House No-62, Road-27, Gulshan, Dhaka Members Engr. Md. Shamsul Alam The Designers and Managers House no - 91, Road- 9/A (New), Dhanmondi R/A, Dhaka Engr. Md. Anwar Hossain Apt A1, House 72, Road 6, Dhaka Cantonment, Dhaka  Engr. Md. Saidul Islam Bangladesh Standard & Testing Institution 116/A, Tejgaon Industrial Area, Dhaka inium, um, Glass) (b) Building Materials (Timber, Wood Products, Flooring, Aluminium, Glass): Finishing Related Material/Architectural ) / Part 5 : Housing and Building Research Institute, Mirpur, Dhaka  neering Dept. of Glass & Ceramic Engineering BUET, Dhaka Members Ar. Khan Md. Mustapha Khalid  Pvt.) Ltd. Vistaara Architects (Pvt.) 43, Gu Gulshan Apt.-D1, Se(H)-6, Rd-143, Gulshan, Dhaka Engr. Mamun Ahmad   Lane-5( House-327, Lane-5(Wes Lane-5(West) Dhaka Baridharaa DOHS. Dhak Convener Engr. Sajidur Rahman ' Members Engr. Abdul Mozid Shikder Md. Ahsan Habib P.Eng Part 6: ) )7 esign Requirements, Requirem Requireme (a) Structural Design (General Design Loads, Masonry, Timber , Bamboo Structures) 5 $ Part 6 : ,1 Convener Prof. Dr. Md. Fakhrul Islam   Shahidullah & Associate Ltd 137, Jahanara Garden, Green Road, Dhaka  Public Works Department Segun bagicha, Dhaka  Public Works Department Segun Bagicha, Dhaka (b) Structural Design (Soils & Foundation) Convener Prof. Dr. Md. Zoynul Abedin Members Mr. Reshad Mohammad Ekram Ali Maj. Gen. (Rtd) Md. Ismail Faruque Chowdhury vi Dept. of Civil Engineering BUET, Dhaka. Geological Survey of Bangladesh Pioneer Road, Segun Bagicha, Dhaka Mirpur Ceramic Works Ltd., Mirpur, Dhaka Not yet officially approved by Bangladesh Govt. Engr. Md. Abdul Wahed $ Part 5 : Engr. Mohammad Abu Sadeque PEng. Housing and Building Research Institute, Mirpur, Dhaka Prof. Dr. Abdul Jabber Khan Dept. of Civil Engineering BUET, Dhaka Prof. Dr. Ishrat Islam Dept of Urban & Regional Planning BUET, Dhaka Prof. Dr. Mehedi Ahmed Ansari Dept. of Civil Engineering BUET, Dhaka (c) Structural Design (Concrete Material, RC Design USD/WSD, Detailing of RC Structures, Ferro cement Structures) Convener Engr. AH Md. Motiur Rahman House-59, Road-7A, Flat-4C Dhanmondi, Dhaka / Members Engr. Md. Rafiqul Islam $ ent Public Works Department ka Segun Bagicha, Dhaka The Universityy of Asia Pacific Dhaka. Engr. Syed Isar Hossain ing and Building Research Institute Housing ur, Dhaka Dha Mirpur, ) ,1 Prof. Dr. Iftekhar Anam (d) Structural Design (Prestressed Concr...
View Full Document

  • Summer '16
  • Dr. Tahmeed M. Al-Hussaini
  • Architect, Building code, Bangladesh Govt

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes