Document Details |
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| Name of Department/Committee : | CED 46 | ||||
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| Document Number : | CED 46 ( 26932) | ||||
| Document Title [English] : | National Building Code of India Part 6 Structural Design Section 1 Loads Forces and Effects | ||||
| Document Title [Hindi] : | भारत की राष्ट्रीय भवन निर्माण संहिता भाग 6 संरचनात्मक डिजाइन अनुभाग 1 भार, बल तथा प्रभाव | ||||
| Document Type : | Revision | ||||
| Language : | English | ||||
| Priority : | 3 | ||||
| ICS Code : | 01.120: 91.040.01 | ||||
| Date of Project Approval : | 23-03-2024 | ||||
| Standards to be Revised : |
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| Standards to be Superseded : |
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Classification Details |
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| Group : | Civil Engineering Design and Construction |
| Sub Group : | Construction practices, measurement and management |
| Sub Sub Group : | NBC of India |
| Aspects : | Others |
| Risk : | Medium |
| Certification : | Not Certifiable |
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| Ministry : |
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| Sustainable development Goals : |
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| Degree of Equivalence : | Indigenous |
| Identical/Equivalent Standards : | |
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| Sl.No. | Synosis Points | |
| 1 | In this revision, considering the recent developments and R&D efforts nationally and internationally, the following significant modifications and inclusions have been made: a) Imposed loads for dwelling units planned and executed in accordance with IS 8888 : 2020 ‘Requirements of low income housing for Urban areas guide (second revision)’ have been made same as other residential buildings. b) Unit weights of construction materials and stored materials have been included in Annex A. c) Provisions relating to dead load for gardening and landscaping have been introduced. d) Provision relating to testing of building fabrics against wind borne debris has been included. e) Calculation of K4 Factor as per IS 18315 : 2023 ‘Estimation of Cyclonic Factor (K4) – Guidelines’ has been included. | |
| 2 | f) Table of basic wind speed for various cities of India has been updated. g) The design earthquake hazard across the country has been revised comprehensively based on probabilistic considerations with the deterministic hazard taken as the minimum. Displacement hazard is also brought into focus alongside acceleration hazard. h) The criteria for earthquake resistant design of structures have been revised substantially. The changes in the latest provisions relating to Earthquake effects will be added suitably after the finalization/publication of Part 1 and 2 of Design Earthquake Hazard and Criteria for Earthquake Resistant Design of Structures - Part 1 : General Provisions and Part 2 Buildings [(Second Revision of IS 1893 (Part 1)]. i) A new term ‘characteristic ground snow load’ has been introduced and defined. | |
| 3 | j) Characteristic ground snow load maps for union territory of Jammu and Kashmir, union territory of Ladakh, and states of Himachal Pradesh, Uttarakhand and Sikkim have been introduced, resulting from studies conducted by Defence Geoinformatics Research Establishment (DRDO), Chandigarh. k) Equation for calculation of characteristic ground snow load has been suggested in Annex M. l) Clause relating to partial loading due to melting, sliding, snow redistribution, and snow removal has been included. m) Clause relating to ponding instability has been included. n) Detailed provisions relating to design for blast loads have been included in Annex Q. | |
Timeline Details |
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Stages |
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| Sl. No. |
Stage | Date of Occurence | Remarks | Circulated to | Files |
| 1 | Generation of Document Number | 23-03-2024 | ------- | ||
| 2 | P-Draft | 14-11-2024 | Covering letter generated | ------- | |
| 3 | P-Draft | 14-11-2024 | Duration : 21 Days | CED 46, CED 46, CED 46 : P1, CED 46 : P2, CED 46 : P3, CED 46 : P4, CED 46 : P5, CED 46 : P6, CED 46 : P7, CED 46 : P8, CED 46 : P9, CED 46 : P10, CED 46 : P11, CED 46 : P12, CED 46 : P13, CED 46 : P14, CED 46 : P15, CED 46 : P16, CED 46 : P17, CED 46 : P18, CED 46 : P19, CED 46 : P20, CED 46 : P21, CED 46 : P22, | ------- |
| 4 | WC Draft | 12-03-2025 | Duration : 32 Days Submitted for HOD approval |
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| 5 | WC Draft | 12-03-2025 | WC approved by HOD |
CEDC CED 02, CED 07, CED 13, CED 29, CED 32, CED 37, CED 38, CED 39, CED 46, CED 47, CED 54, CED 46 : P1, CED 46 : P2, CED 46 : P3, CED 46 : P4, CED 46 : P5, CED 46 : P6, CED 46 : P7, CED 46 : P8, CED 46 : P9, CED 46 : P10, CED 46 : P11, CED 46 : P12, CED 46 : P13, CED 46 : P14, CED 46 : P15, CED 46 : P16, CED 46 : P17, CED 46 : P18, CED 46 : P19, CED 46 : P20, CED 46 : P21, CED 46 : P22, CED 43, | ------- |