EQUIVALENT INITIAL STRUCTURAL SAFETY ASSESSMENT

Transcription

1 EQUIVALENT INITIAL STRUCTURAL SAFETY ASSESSMENT Plot No.: 74-77, Sector -02, Karnaphuli EPZ North Patenga, Chittagong Chittagong Chittagong Bangladesh The Alliance for Bangladesh Worker Safety Page 1/11

2 Introduction to the Report The following report contains a site profile and summary of non-conformities identified during an onsite assessment commissioned by the Alliance for Bangladesh Worker Safety (Alliance) and conducted by a third-party Qualified Assessment Firm (QAF). The assessment was conducted against the Alliance for Bangladesh Worker Safety Assessment Protocols (APs) and Fire Safety and Structural Integrity Standard, which is harmonized with the factory assessment guidelines developed by Bangladesh University of Engineering and Technology (BUET) for the Bangladesh National Tripartite Plan of Action (NTPA). The goal of the Alliance process is to provide clear and practical technical requirements by which Bangladeshi Ready Made Garment (RMG) Factories producing for Alliance members may be consistently and fairly evaluated for fire, structural, and electrical safety in a non-duplicative manner. Each assessment will prompt action plans that will be used by RMG factories to systematically and sustainably improve safety conditions for garment workers. Beyond tracking and reporting on action steps taken in a transparent manner, the Alliance organization and its members will seek to further support factory improvements through technical assistance, training, implementation support for functional Worker Committees, and in some cases financial assistance and wage support for workers if factories are closed for remediation. The contents of the report do not constitute a guarantee of compliance with the applicable laws, the Alliance Standard or the absolute or continued safety against fire, electrical and/or structural integrity issues that may lead to injury or loss of life. The report is designed to provide a non-exhaustive summary of risk issues, based on a limited sampling and duration of time onsite by the named QAF. Neither the QAF nor the Alliance can certify or guarantee the quality, outcome, or effectiveness of actions taken in response to the report. For more information and report feedback please go to: The Alliance for Bangladesh Worker Safety Page 2/11

3 GENERAL INFORMATION General Information Country: Province: City: Bangladesh Chittagong Chittagong Zip Code: 4204 Audit Duration: Re-Audit: 7 Hours Re-Audit After 0 Months Draft Report Date : July 06, 2014 Final Report Date : October 28, 2014 Are all Action Items From Previous Assessment Completed?: Buildings in Complex : Number of Building Levels (Stories) : Approximate Building Area (SF) : Date of Building Construction : Date of Last Building Renovation/Addition : Is the Building mixed N/A There are five buildings in the factory premises out of which one is main production building and four are ancillary buildings. The buildings are named as: 1. Two story prefab main production shed, 2. Single story boiler shed, 3. Single story garbage shed, 4. Single story RCC security building-1, 5. Single story RCC security building Two story prefab main production shed: Stories above grade: 2, Stories below grade: 0, Occupied levels: 2, 2. Single story boiler shed: Stories above grade: 1, Stories below grade: 0, Occupied levels: 1, 3. Single story garbage shed: Stories above grade: 1, Stories below grade: 0, Occupied levels: 1, 4. Single story RCC security building-1: Stories above grade: 1, Stories below grade: 0, Occupied levels: 1, 5. Single story RCC security building-2: Stories above grade: 1, Stories below grade: 0, Occupied levels: 1. Total area of all buildings in the factory premises: sft. Building wise breakdown as follows: 1.Two story prefab main production shed: sft (Ground floor: sft, 1st floor: sft), 2. Single story boiler shed: 386 sft, 3. Single story garbage shed: 966 sft, 4. Single story RCC security building-1: 203 sft, 5. Single story RCC security building-2: 227 sft. personnel informed the date of construction as follows: 1.Two story prefab main production shed: Started in April-2010 and finished in March No record for date of construction was found from factory personnel for ancillary structures. No record has been found for renovation/addition works. No The Alliance for Bangladesh Worker Safety Page 3/11

4 use?: Ancillary Structures in Complex : Number of Ancillary Levels (Stories) : Approximate Ancillary Structures Area (SF) : Number of Occupants : Exterior Facade Description : Structural System Description : 1. Single story boiler shed, 2. Single story garbage shed, 3. Single story RCC security building-1, 4. Single story RCC security building Single story boiler shed: Stories above grade: 1, Stories below grade: 0, Occupied levels: 1, 2. Single story garbage shed: Stories above grade: 1, Stories below grade: 0, Occupied levels: 1, 3. Single story RCC security building-1: Stories above grade: 1, Stories below grade: 0, Occupied levels: 1, 4. Single story RCC security building-2: Stories above grade: 1, Stories below grade: 0, Occupied levels: Single story boiler shed: 386 sft, 2. Single story garbage shed: 966 sft, 3. Single story RCC security building-1: 203 sft, 4. Single story RCC security building-2: 227 sft. Total number of occupants: Two story prefab main production shed: 1350 (Ground floor: 675, 1st floor: 675), 2. Single story boiler shed: 1, 3. Single story garbage shed: 1, 4. Single story RCC security building-1: 2, 5. Single story RCC security building-2: 1. The structure is a two story PEB shed with infilled masonry. Windows are sliding glass in Aluminum frame. There is a tin shed porch in front of the main shed. The door of the factory is glassed swinging type. Few sanitary PVC pipes of 4" dia has also been positioned at exterior facade. The main building consists of concrete columns and steel beams at the ground level and steel columns and roof gable-frame beams at the upper level (Level 1). The primary lateral load resisting system of the shed consists of RCC slabs transmitting lateral forces to the steel frames with all connections forming a rigid frame. Framing system is continuous. Steel columns are connected with floor slab with anchor bolts. The foundation of the building is isolated column footing. The Alliance for Bangladesh Worker Safety Page 4/11

5 ASSESSMENT FINDINGS Structural System Design Are credible structural design documents available for review and kept on site? Only approval drawing is available. Detail structural, architectural drawings and design report have not been found during audit. The Engineer's FIEB number is also missing. Document Review: Review of approval drawing. Detailed structural and architectural drawings and design report have not been found during audit. Have a qualified structural engineer prepare credible as-built documents based on the requirements of Part 8 Section 8.19 of the Alliance Standard. Alliance Standard Part 8 Section 8.19 Required Structural Documentation for New and Existing Factories Can credible structural documentation indicating general conformance with 2006 BNBC or other comparable applicable international model building code be produced? The building was designed and constructed after 2006 but there is no indication that the design accommodates the requirement of BNBC Document Review: Document review. Engage a qualified structural engineer to develop the required documents to confirm the structural integrity of the buildings. Documents must comply with Alliance Standard Part 8 Section 8.19 and 8.20 Reference Alliance Standards Part 8 Section 8.2 Structural Integrity of Existing Buildings If built after 2006, can documented compliance with the seismic and wind requirements of the 2006 BNBC be provided? The Alliance for Bangladesh Worker Safety Page 5/11

6 The building was constructed after However, there is no indication that the building design considered seismic and wind loading. Document Review: Review of available documentation. Have a qualified structural engineer document compliance with the seismic and wind requirements stated in the 2006 BNBC. Alliance Standards Part 8 Section 8.17 Design for Lateral Loads and 2006 BNBC Part 6 Section 1.5 Can documentation be provided that the building is compliant with the requirements for wind loading and storm surge loadings as detailed in BNBC Part 6 Section 1.5.3? There is no clear information available on the design document to understand the consideration of storm surge and wind loading in the design of the building. Document Review: Review of available documentation. Engage a qualified structural engineer to confirm satisfactory structural performance of the buildings under wind loading BNBC Part 6 Section 1.5. Compliance may be waived if the Owner provides satisfactory evidence of a cyclone operations plan that includes full evacuation of the factory in advance of any approaching cyclone" Structural System Construction Are the performance of key structural elements such as columns, slender columns, flat plates and transfer structures satisfactory? High Non-Compliance Level: 1 Hairline cracks have been found on slab in ground floor at south west corner of the building. Visual Assessment: Visual assessment of key structural elements. Engage a qualified structural engineer to confirm structural performance of the structure. The Alliance for Bangladesh Worker Safety Page 6/11

7 Alliance Standard Part 8 Section Is the structural system free of distress, settlement, shifting, or cracking in columns or walls? High Non-Compliance Level: 1 There is no crack in the columns. However, there are some masonry cracks in the walls which are not affecting the performance of the structure. Visual Assessment: Visual assessment of walls. Have a qualified structural engineer provide further testing and analysis of distress, settlement, shifting, or cracking in columns or walls and provide a remediation plan to correct noted issues. Alliance Standard Part 8 Section Have all areas of needed maintenance, including areas with efflorescence, dampness, standing water on rooftops, and corrosion been addressed. There are sign of corrosion in the steel members of the structure. Visual Assessment: Visual assessment of areas needing maintenance. Under guidance from a qualified structural engineer, address all areas of needed maintenance by correcting the identified issues. Alliance Standard Part 8 Section 8.26 Durability and Maintenance Are structural steel members free of corrosion, physical damage or other types of deterioration? There are sign of corrosion in the steel members of the structure. Visual Assessment: Visual assessment of steel members. The Alliance for Bangladesh Worker Safety Page 7/11

8 Complete further testing on areas of deterioration and have a qualified structural engineer develop a remediation plan. Alliance Standard Part 8 Section 8.26 Are all non-structural elements suspended from, attached to, or resting atop the structure adequately anchored and braced to resist earthquake forces? There are some racks at ground floor and 1st floor which are not properly anchored or braced for earthquake force.two plastic water tanks each having capacity of 500 liters and one RCC overhead water tank having capacity of liter have been found whi Visual Assessment: Visual assessment of non-structural elements. Adequately anchor and brace all non-structural elements to resist earthquake forces to comply with the BNBC and Alliance Standard. Alliance Standards Part 8 Section 8.18 Seismic Bracing of Key Non-Structural Elements and 2006 BNBC Part 6 The exterior façade is free of cracking. Cracks have been found on exterior facade. Visual Assessment: Visual assessment of facade. Have a qualified structural engineer provide further analysis of the identified cracks to determine the appropriate course of corrective action. The Alliance for Bangladesh Worker Safety Page 8/11

9 Alliance Standard Part 8 Section 8.2 Is the building free of active signs of water intrusion or ponding due to lack of performance of the façade system? There are sign of dampness on the exterior walls due to leakage of PVC pipe of the building. This needs to be remedied. Visual Assessment: Visual assessment shows that there are sign of dampness on the exterior walls due to leakage of PVC pipe of the building. This needs to be remedied. Repair the exterior façade system to prevent water intrusion. Alliance Standard Part 8 Section 8.26 Durability and Maintenance Structural Safety Programs Is a program in place to ensure that the live loads for which a floor or roof is or has been designed will not be exceeded? Non-Compliance Level: 3 There is no program that will ensure that the designated load in each floor will not be exceeded. Document Review: Document review shows that no evidence of existence of any program to control the live load on the floor as per the floor load plan. Develop a program to ensure that all live loads for which a floor or roof has been designed for will not be exceeded. The designated Load Manager shall oversee this program and ensure it is enforced. Alliance Standard Part 13 Section 13.7 and Part 8 Section 8.9. Have Load Plans been prepared for each floor documenting the actual maximum operational loading that is intended and/or allowable on each floor. Non-Compliance Level: 3 There is no load plan available showing the actual maximum operational The Alliance for Bangladesh Worker Safety Page 9/11

10 loading that is allowable. Document Review: Missing necessary documentation. Have a qualified structural engineer develop Floor Loading Plans per the requirements of Part 8 Section Alliance Standard Part 8 Section 8.10 Floor Loading Plans (Load Plans) Are Floor Load Plans posted as required? Non-Compliance Level: 3 There is no load plan available showing the actual maximum operational loading that is allowable. Visual Assessment: Visual assessment shows that there is no load plan available showing the actual maximum operational loading that is allowable. Have a qualified structural engineer prepare load plans including the information required in Section 8.20 of the Alliance Standard. Have the Load Plans posted visibly as required. Alliance Standard Part 8 Section Are areas used for storage of work materials and work products, clearly marked to indicate the acceptable loading limits as described in the Load Plan for that floor? Non-Compliance Level: 3 There is no load plan. Also, there is no marking on the floor to designate spaces and height for storage of work materials. Visual Assessment: Visual assessment of loading conditions. Provide signage or the appropriate markings at all areas used for storage to indicate the acceptable loading limits detailed in the Load Plan. Alliance Standard Part 8 Section 8.11 Floor Load Markings Is a designated representative ( Load Manager), who is onsite full time, trained regarding the structural floor capacity, and serves as an ongoing The Alliance for Bangladesh Worker Safety Page 10/11

11 vendor resource and monitor of operational factory floor loadings? Non-Compliance Level: 3 There is no designated representative ( Load Manager), who is onsite full time, trained regarding the structural floor capacity, and serves as an ongoing vendor resource and monitor of operational factory floor loadings. Document Review: Missing documentation for a designated load manager. Designate a representative as the Load Manager. The Owner shall ensure that at least one individual, the Load Manager who is located onsite full time at the factory, is trained in calculating operational load characteristics of the Alliance Standards Part 8 Section 8.9 Load Manager The Alliance for Bangladesh Worker Safety Page 11/11