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““Action Based Advocacy for Building Action Based Advocacy for Building Code Implementation in BangladeshCode Implementation in Bangladesh””

Md Md AnisurAnisur RahmanRahmanProject Manager and Urban Planning SpecialistProject Manager and Urban Planning Specialist

Asian Disaster Preparedness Center (ADPC)Asian Disaster Preparedness Center (ADPC)Bangkok, ThailandBangkok, Thailand

City is Growing FastCity is Growing Fast

Uncontrolled and unplanned Uncontrolled and unplanned developmentdevelopment

Building code is hardly Building code is hardly followedfollowed

Considering the Reality, Comprehensive Disaster Management Programme (CDMP), under the Ministry of Food and Disaster Management of Bangladesh Government has taken initiatives for Building Vulnerability Assessment with Regard to Earthquake in three Major Cities

Asian Disaster Preparedness Center (ADPC) is implementing the initiative through……….

1. Preparation of Seismic hazard maps, Building Assessment , Damage and Loss estimation.

2. Assessment of Existing building typology and Vulnerability factors

3. Current Construction Practice in the Cities

4. Initiatives to meet up the gaps identified

Assessment of Existing building typology and Vulnerability factors

A checklist was developed to survey the buildings as classified in Bangladesh National Building Code

About 18,000 buildings in three cities were surveyed to assess vulnerability

Earthquake vulnerability factors were considered during the survey

Vulnerability factors considered during survey Weak / Soft Story

drift

normal Soft story

drift

Existing building in Dhaka

Effect During Gugrat Earthquake

Vulnerability factors considered during survey Heavy Overhangs and Cantilever

Presence of Heavy Overhang in a building in Dhaka

Vulnerability factors considered during survey

Short Colum Effect

Effect on Short Colum during an Earthquake

Presence of Short Colum in a building in Chittagong , Bangladesh

Vulnerability Factors identified in the Existing Buildings

Presence of Soft Story in 53%, 23% and 14% buildings respectively in the city of Dhaka, Chittagong and Sylhet

Heavy overhangs is Present in 41%, 36% and 39% buildings respectively in the city of Dhaka, Chittagong and Sylhet

Short Colum is Present in 34%, 15% and 16% buildings respectively in the city of Dhaka, Chittagong and Sylhet

Fragility curve for all types of buildings is developed

Present Construction Practice

Bar bending is nor adequately done

Too many joints of bar in a Colum

Quality of Brick Mortar is not up to mark

Gaps Identified

Bangladesh National Building Code was formulated in 1993 but it has not been executed over the period.

Although there are guidelines in the Building code for Bar binding, it is not in practice during construction.

Training for Masons and Bar Binders

150 masons were trained in three cities on earthquake compatibleconstruction (as pilot)

Way Froward…………….

• Encourage and support city development authority to incorporate seismic Hazard in to land use plan for height zoning.

• Facilitate to up-to-date the National Building Code based on the fragility function.

Seismic Hazard Map of Dhaka Earthquake Damage Map of Dhaka