Natural Sweater Village Ltd

Transcription

1 Natural Sweater Village Ltd Raju Tower, Gouripur, Ashulia, Dhaka ( E, N) 19 December

2 2 Building 1 Building Observations

3 3 Drawings do not correspond with constructed condition in some locations

4 B1 beams shown on drawings as 350mm deep but are only 300mm deep measured on site and beam layout drawing is incorrect Reinforcing drawings for beams do not represent the constructed condition (ie some beams receive other beams at midspan) Column 4 Drawing accuracy

5 5 Limit density of loading in storage areas

6 Level 4 Yarn Storage Plan and height restrictions to be introduced to prevent future overloading. (Loading plans in line with design loads from engineer) Uncontrolled loading 6 Load Management

7 7 Repaired cracks to slab and beam soffits painted (observation)

8 Most levels in Building 1 - Beams and slabs have been touch up painted to cover cracking in the surface of the beams / slabs. Letter sighted indicated that cracking was present and that heavy equipment be relocated. No heavy equipment observed in inspection undertaken. 8 Slab soffit and beam cracking

9 9 Water penetration at joint between Building 1 and 2 Level 4 ceiling

10 Building 1 (roof above) Water penetration at joint between Building 1 and 2 as seen from staining to underside of roof level Building 2 Water penetration and building joint 10

11 11 Building 2 Building Observations

12 12 Limit density of loading in storage areas

13 Level 5 Yarn Store Controlled loading Uncontrolled loading Plan and height restrictions to be introduced to prevent future overloading. (Loading plans in line with design loads from engineer) Level 4 Yarn Storage Level 1 Yarn Storage 13 Load Management

14 14 Possible localised water damage

15 Possible water damage resulting in staining to the underside of Level 2 slab viewed from Level 1. Also area does not appear to have been recently painted. Possible localised water damage 15

16 16 Single storey steel shed Building Observations

17 17 Steel roof truss tie down and stability

18 Observation that roof truss connected to projecting reinforcing which does not provide much lateral resistance in any direction. Truss tie down is also reliant on welds. Truss stability and tie down 18

19 19 Priority Actions

20 Problems Observed ITEM 1: Concrete column strengths (Buildings 1 & 2) ITEM 2: Accuracy of engineering documentation regarding gridlines and structural element sizes (Building 1) ITEM 3: Load management (Buildings 1 & 2) ITEM 4: Repaired cracking in slabs and beams following apparent relocation of heavy equipment as advised in letter (Building 1) ITEM 5: Water penetration at building movement joint ITEM 6: Possible water damage to slab soffit area ITEM 7: Truss restraint and tie down (Shed Yarn Store) 20

21 Item No. Observation Recommended Action Plan Recommended Timeline 1 Concrete column strengths (Buildings 1 & 2) No further loading to be applied to the building (construction, storage) until column load capacities have been verified by Building Engineer Immediate - Now 2 Concrete column strengths (Buildings 1 & 2) Factory Engineer to review design, loads and column stresses in the building based on as built condition (refer item 2) 6-weeks 3 Concrete column strengths (Buildings 1 & 2) Verify insitu concrete strength using existing cylinder strength data for 4 columns at lowest 2 levels (ground, and 1st floor). If existing cylinder strength information is not available, then cores shall be taken only after full consideration of the effects due to loss of cross sectional area. 6-months 4 Accuracy of engineering documentation regarding gridlines and structural element sizes (Building 1) Produce As-Built drawings showing the actual layout and size of structural elements and reinforcement in Building 1. 6-weeks 21

22 Item No. Observation Recommended Action Plan Recommended Timeline 5 Load management (Buildings 1 & 2) Building Engineer to produce a loading plan for all floor plates within the building giving consideration to floor capacity and column capacity. (refer items 1 & 2) 6-weeks 6 Load management (Buildings 1 & 2) Factory to actively manage load plan 6-weeks 7 Load management (Buildings 1 & 2) Continue to implement load plan 6-months 8 Building 1 - Monitor repaired cracking in slabs and beams (following apparent relocation of heavy equipment as advised in letter) Design check including detailed calculations on as built condition of slab and beams to be carried out (refer item 2 & 3) 6-weeks 9 Building 1 - Monitor repaired cracking in slabs and beams (following apparent relocation of heavy equipment as advised in letter) Building engineer to monitor cracking in soffit of beams and slabs at repair locations and report in 6 months 6-months 22

23 Item No. Observation Recommended Action Plan Recommended Timeline 10 Building 1 Water penetration at building movement joint Provide water proofing detail at roof level to limit water penetration 6-months 11 Possible water damage to slab soffit area Source of moisture to be identified and rectified to prevent further deterioration of concrete 6-months 12 Possible water damage to slab soffit area Monitor observed area and review in 6 months 6-months 13 Truss restraint and tie down (Shed Yarn Store) Adequate code compliant fixing detail to be designed by Building Engineer to ensure lateral stability and tie down 6-months 14 Truss restraint and tie down (Shed Yarn Store) Factory to install new design fixing to all trusses 6-months 23