mermaid sweaters ltd feroza apparels ltd
TRANSCRIPT
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Mermaid Sweaters LtdFeroza Apparels Ltd
Ltd
177/1, 178, South Bishil Mirpur-1 Dhaka - 1216(23.795529N, 90.350728E)
4th March 2015
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Observations
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ObservationsBuilding 1
4Observations Building 1
High Stress Levels in ColumnsAnd Loadbearing Brickwork
5 Observations Building 1
Outline calculations indicate that concrete columns and loadbearing brickwork walls and pillars at the Ground Floor and 1st Floor are highly stressed under their current loading condition
6Observations Building 1
Absence of structural drawings
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Only as built drawings for Building 1 available (shown with red) but no structural information was presented
Observations Building 1
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Apparently non-engineered roof structure at top floor
Observations Building 1
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Roof structure over the prayer room and knitting room at top floor appears non-engineered
Observations Building 1
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ObservationsBuilding 2
11Observations Building 2
High Stress Levels in Columns
12 Observations Building 2
Outline calculations indicate that a number of columns at the Ground Floor are highly stressed under their current loading condition and require to be reviewed urgently.
High stress level in the columns shown with red circle
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Discrepancies between site observation and information on drawing
Observations Building 2
14 Observations Building 2
Additional grid shown in the as built drawing (marked with red rectangle) not present in the structural drawings and also not been observed on site
As built drawing
Structural drawing
15 Observations Building 2
Building Permit Drawings for4-storied residential building
Additional floor not shown in buildingpermit drawings. Also building is used as factory but permit is for residential use.
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Possible lack of bracing in roof structure
Observations
17 Observations
Possible lack of bracing in the roof of warehouse. Bracing may be required(marked with red lines)
Possible lack of bracing in the roof of passage between Building 1 & 2. Bracing may be required (marked with red lines)
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Priority Actions
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Problems ObservedBuilding 1ITEM 1: High Stress Levels in Columns and Loadbearing BrickworkITEM 2 : Absence of structural drawingsITEM 3 : Apparently non-engineered roof structure at top floor
Building 2ITEM 1: High Stress Levels in ColumnsITEM 2: Discrepancy between site observation and information on drawingITEM 3: Possible lack of bracing in roof structure
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Building 1
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Item No. Observation Recommended Action Plan Recommended Timeline
1Building 1: High Stress Levels in Columns and Loadbearing
Brickwork
Factory Engineer to review design, loads and column stresses in all columns. Factory Engineer to review design, loads and stresses in all brickwork walls and pillars.
Immediate - Now
2Building 1: High Stress Levels in Columns and Loadbearing
Brickwork
Verify insitu concrete strength by taking 100mm diameter cores from 4 columns at ground Floor. Verify grade and amount of steel reinforcement used.
Immediate - Now
3Building 1: High Stress Levels in Columns and Loadbearing
BrickworkVerify brickwork strength and mortar strength. Immediate - Now
4Building 1: High Stress Levels in Columns and Loadbearing
Brickwork
A Detail Engineering Assessment to be commenced on Building 1, see attached Scope.
Immediate - Now
5Building 1: High Stress Levels in Columns and Loadbearing
Brickwork
Detail Engineering Assessment to be completed on Building 1.
6-weeks
6Building 1: High Stress Levels in Columns and Loadbearing
Brickwork
Produce and actively manage a loading plan for all floor plates within the factory giving consideration to floor capacity and column capacity.
6-weeks
7Building 1: High Stress Levels in Columns and Loadbearing
BrickworkContinue to implement load plan 6-months
8Building 1: Absence of
structural drawings
As part of the Detail Engineering Assessment (see Item 1), Factory Engineer to prepare accurate as built structural drawings.
6-weeks
9Building 1: Apparently non-engineered roof structure at
top floor
Building engineer to check the capacity of the lightweight roofs and stairs and make any necessary alterations.
6-months
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This Schedule develops a minimum level of information, Analysis and testing expected as part of a Detail Engineering Assessment.The Building(s) have been visually assessed and it is deemed necessary that a detailed engineering assessment be carried out by a competent Engineering Team employed by the factory Owner. This Request should be read in conjunction with the BUET developed Tripartite Guideline document for Assessment of Structural Integrity of Existing RMG Factory Buildings in Bangladesh (Tripartite Document), the latest version of this document should be referenced. T his document also gives guidance on required competency of Engineering Team.
We expect that the following will be carried out:1. Development of Full Engineering As-Built Drawings showing Structure, loading, elements, dimensions , levels, foundations and framing on Plan,
Section and Elevational drawings .2. The Engineering team are to carry out supporting calculations with a model based design check to assess the safety and serviceability of the building
against loading as set out in BNBC-2006, Lower rate provisions can be applied in accordance with the Tripartite Guidelines following international engineering practice, justification for these lower rate provisions must be made.
3. A geotechnical Report describing ground conditions and commenting on foundation systems used/proposed.4. A report on Engineering tests carried out to justify material strengths and reinforcement content in all key elements studied.5. Detailed load plans shall be prepared for each level showing current and potential future loading with all key equipment items shown with associated
loads.6. The Engineering team will prepare an assessment report that covers the following:
• As-Built drawings including• Plans at each level calling up and dimensioning all structural components • Cross sectional drawings showing structural beams, slabs, floor to floor heights, roof build-ups and Basic design information of the
structure• Highlight any variation between As-built compared to the designed structure• Results of testing for strength and materials• Results of geotechnical assessment and testing/investigation• Details of loading, inputs and results of computer modelling• Commentary on adequacy/inadequacy of elements of the structure• Schedule of any required retrofitting required for safety or performance of Structure
Any proposals for Retrofitting to follow guidance developed in the Tripartite Document
Detail Engineering Assessment
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Building 2
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Item No. Observation Recommended Action Plan Recommended Timeline
10Building 2: High Stress Levels
in ColumnsFactory Engineer to review design, loads and column stresses in all columns.
Immediate - Now
11Building 2: High Stress Levels
in Columns
Verify insitu concrete strength by taking 100mm diameter cores from 4 columns at ground Floor. Verify grade and amount of steel reinforcement used.
Immediate - Now
12Building 2: High Stress Levels
in ColumnsA Detail Engineering Assessment to be commenced on Building 2, see attached Scope.
Immediate - Now
13Building 2: High Stress Levels
in ColumnsDetail Engineering Assessment to be completed on Building 2.
6-weeks
14Building 2: High Stress Levels
in Columns
Produce and actively manage a loading plan for all floor plates within the factory giving consideration to floor capacity and column capacity.
6-weeks
15Building 2: High Stress Levels
in ColumnsContinue to implement load plan 6-months
16Building 2: Discrepancy
between site observation and information on drawing
As part of the Detail Engineering Assessment (see Item 1), Factory Engineer to update the as-built drawings to reflect actual site measurements.
6-weeks
17Building 2: Possible lack of bracing in roof structure
Building engineer to check the capacity of the lightweight roofs and make any necessary alterations.
6-months
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This Schedule develops a minimum level of information, Analysis and testing expected as part of a Detail Engineering Assessment.The Building(s) have been visually assessed and it is deemed necessary that a detailed engineering assessment be carried out by a competent Engineering Team employed by the factory Owner. This Request should be read in conjunction with the BUET developed Tripartite Guideline document for Assessment of Structural Integrity of Existing RMG Factory Buildings in Bangladesh (Tripartite Document), the latest version of this document should be referenced. T his document also gives guidance on required competency of Engineering Team.
We expect that the following will be carried out:1. Development of Full Engineering As-Built Drawings showing Structure, loading, elements, dimensions , levels, foundations and framing on Plan,
Section and Elevational drawings .2. The Engineering team are to carry out supporting calculations with a model based design check to assess the safety and serviceability of the building
against loading as set out in BNBC-2006, Lower rate provisions can be applied in accordance with the Tripartite Guidelines following international engineering practice, justification for these lower rate provisions must be made.
3. A geotechnical Report describing ground conditions and commenting on foundation systems used/proposed.4. A report on Engineering tests carried out to justify material strengths and reinforcement content in all key elements studied.5. Detailed load plans shall be prepared for each level showing current and potential future loading with all key equipment items shown with associated
loads.6. The Engineering team will prepare an assessment report that covers the following:
• As-Built drawings including• Plans at each level calling up and dimensioning all structural components • Cross sectional drawings showing structural beams, slabs, floor to floor heights, roof build-ups and Basic design information of the
structure• Highlight any variation between As-built compared to the designed structure• Results of testing for strength and materials• Results of geotechnical assessment and testing/investigation• Details of loading, inputs and results of computer modelling• Commentary on adequacy/inadequacy of elements of the structure• Schedule of any required retrofitting required for safety or performance of Structure
Any proposals for Retrofitting to follow guidance developed in the Tripartite Document
Detail Engineering Assessment