Camlet Fashions Ltd. Simco Fashions Ltd Fine Craft Ltd Ayesha & Galeya Fashions Ltd

Transcription

1 Camlet Fashions Ltd. Simco Fashions Ltd Fine Craft Ltd Ayesha & Galeya Fashions Ltd 24/ka Shahid Minar Road (5 th Floor), Kallyanpur, Dhaka ( , )- 28 th February

2 2 Observations

3 Suspension structure of the steel container with the boiler appears to be not anchored appropriately. 3 Observations

4 Steel container with Boiler room at 7 th floor with its suspension structure Relocate boiler immediately and remove structure 4 Observations

5 5 Stability system is unclear due to mix of flat slab and partial beam and slab construction

6 Typically flat slab construction with some downstand concrete beams. Stability System is unclear due to mix of flat slab and beam construction. Beam and slab Beams Flat slab Flat slab Check on stability system and load paths is required. Also to consider impact of two construction phases. Structural System (Typical Floor) 6

7 7 Columns appear to be stressed in excess of normal design limits

8 0.8M 4.4M 4.4M 4.1M 4.95M 4.3M Columns with critical stress 8.84M 2.35M Cursory calculations indicate that working stress is at a level that warrants review for all columns. High Column Stresses Concrete aggregate: stone chips 8

9 9 Bearing areas of flat slabs appear to be stressed in excess of normal design limits

10 0.8M 4.4M 4.4M 4.1M 4.95M 4.3M Flat slab with critical shear force stress 8.84M 2.35M Cursory calculations indicate that working shear force stress is at a level that warrants review for all bearing areas of flat slabs. High shear force stresses in flat slab 10

11 Locally heavy (uncontrolled) floor loading in some storage areas 11 Observations

12 Uncontrolled heavily loaded Storage areas at 8 th floor 12 Observations

13 Awning suspension structure on the south facade with the awning itself is significantly corroded 13 Observations

14 Corroded suspension structure with its anchorage in the wall Awning structure Corrosion 14 Observations Awning structure & Suspension structure are corroded

15 External staircase on the south facade is significantly corroded 15 Observations

16 Corrosion is observed in the stair case 16 Observations

17 17 Priority Actions

18 Problems Observed ITEM 1: Suspension structure containing the boiler at 7 th floor does not appear to be anchored appropriately. ITEM 2: Stability System is unclear. Engineering assessment of stability load path is required. ITEM 3: Columns appear to be stressed in excess of normal design limits ITEM 4: Bearing areas of flat slabs appear to be stressed in excess of normal design limits ITEM 5: Locally heavy floor loading in some storage areas ITEM 6: Awning suspension structure on the south façade with the awning itself is significantly corroded ITEM 7: External staircase on the south façade is significantly corroded 18

19 Item No. Observation Recommended Action Plan Recommended Timeline 1 Suspension structure of the steel container with the boiler on the 7th floor does not appear to be anchored appropriately. The boiler should be relocated immediately. Immediate - Now 2 Suspension structure of the steel container with the boiler on the 7th floor does not appear to be anchored appropriately. Steel container with boiler room suspended to the north façade on the 7th floor needs to be removed. Immediate - Now Suspension structure of the steel container with the boiler on the 7th floor does not appear to be anchored appropriately. Factory Engineer to carry out the appropriate removal method Stability System is unclear. Detail Engineering Assessment of Factory to be Engineering assessment of commenced in particular Stability and foundation aspects stability load path is required. to be investigated in detail. Stability System is unclear. Engineering assessment of Detail Engineering Assessment to be completed. stability load path is required. Stability System is unclear. Engineering assessment of Continue to implement load plan. stability load path is required. Immediate - Now Immediate - Now 6-weeks 6-months 19

20 Item No. Observation Recommended Action Plan Recommended Timeline Columns appear to be stressed in excess of normal design limits. Verify concrete strengths in columns. Columns appear to be stressed in excess of normal design limits. Verify concrete strengths in columns. Columns appear to be stressed in excess of normal design limits. Verify concrete strengths in columns. Columns appear to be stressed in excess of normal design limits. Verify concrete strengths in columns. Punching shear in flat slabs around edge columns appear to be stressed in excess of normal design limits. Punching shear in flat slabs around edge columns appear to be stressed in excess of normal design limits. Punching shear in flat slabs around edge columns appear to be stressed in excess of normal design limits. As part of DEA requested in Item 2, the Factory Engineer is to review design, loads and columns stresses Verify insitu COLUMN concrete strengths (using min. 4 no. 100mm dia. cores) and existing reinforcement for all columns. Produce and actively manage a loading plan for all floor plates, giving consideration to floor capacity and column capacity. Continue to implement load management plan. As part of DEA requested in Item 2, the Factory Engineer is to review design, loads and columns stresses Verify insitu SLAB concrete strengths (using min. 4 no. 100mm dia. cores) and existing reinforcement for all columns and slab at column locations. As part of DEA requested in Item 2, the Factory Engineer is to review design, loads and columns stresses Punching shear in flat slabs around edge columns appear Continue to implement load management plan. to be stressed in excess of normal design limits. 6-weeks 6-weeks 6-weeks 6-months 6-weeks 6-weeks 6-weeks 6-months 20

21 Detail Engineering Assessment 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 21

22 Item No. Observation Recommended Action Plan Recommended Timeline 15 Locally heavy floor (uncontrolled) loading in some storage areas Engineer to review all loading and instruct removal or reduction of loading as required. 6-weeks 16 Locally heavy floor (uncontrolled) loading in some storage areas Produce and actively manage a loading plan for all floor plates within the factory giving consideration to floor capacity and column capacity. (Refer to Item 2 & 3) 6-weeks 17 Locally heavy floor (uncontrolled) loading in some storage areas Continue to implement load management plan 6-months 18 Awning suspension structure on the south façade with the awning itself is significantly corroded Awning suspension structure on the south façade with the awning itself to be removed. 6-months 19 Awning suspension structure on the south façade with the awning itself is significantly corroded Factory Engineer to carry out the appropriate removal method 6-months 22

23 Item No. Observation Recommended Action Plan Recommended Timeline 20 External staircase on the south façade is significantly corroded Building Engineer to complete design check on stairs for full evacuation load. 6-months 21 External staircase on the south façade is significantly corroded Building Engineer to assess level of corrosion and how this effects the structural capacity of elements 6-months 22 External staircase on the south façade is significantly corroded If required, repair / upgrade to support code loading. 6-months 23