Structural Inspection ReportObservations & Actions

Author: Declan MonaghanChecked by: Hugh Griffin

Approved by: Hugh O’Dwyer

1

Time Sweater Limited Kutubail, Katherpul, Fatullah, Narayanganj, Dhaka, Bangladesh

(23.644126N, 90.489626E)

Survey Date: 13th April 2015

Revision: Issue 1Date: 23rd April 2015

Category Amber

Category Red if key actions on Pages 3 and 4 are not progressed immediately

2

Executive Summary

On 13th April 2015, Mr Declan Monaghan of Arup with the support of local engineers carried out a visual structural survey of the Time Sweater Ltd complex at the address and co-ordinates given on the cover page of this report.

We met with Kazi Moazzem Hossain - Managing Director, Md. Shohel - Assistant Manager (Compliance), NasimHasnain Khan – Consultant, Monaur Hossain Tunhin – Merchandiser, and Kazi Humayun Reza - Land & Property manager.

The factory consists of: • B1 - a main 6 storey Production Building (1400 sq.m/floor), • B2 - Male and Female Dining Buildings (single storey) • B3 - 2 storey Security Building (146 sq.m)• B4 - 1 storey Generator, Sub Station and Electrical Room (90 sq.m)• B5 - 1 storey Chemical Store (9 sq.m)• B6 - 1 storey HT Meter Room (11 sq.m)• B7 - 1 storey Gas Meter Room (6 sq.m)• B8 - 1 storey Pump House (8 sq.m)• B9 - 1 storey Boiler Room (6 sq.m)

Building 1 (Productions Building) contains:• Ground Floor- Bonded Warehouse, Winding Section, Accessories store, Finished Goods store, ETP Plant.• 1st Floor- Office, Finishing & Packing Section, Metal Free Zone, QC Room, Inspection Room, Medical Room.• 2nd Floor- Washing, Ironing & Sewing Section.• 3rd Floor- Linking, Trimming & Mending Section.• 4th Floor- Knitting Section• 5th Floor- Knitting Section• Roof – General assembly room (the remainder of the tin roof is currently being demolished)

3

Executive Summary (continued)

Construction commenced in February 2003 and was completed in 2007. Time Sweater Ltd entered into a 5 year renewable lease in 2013.

Building 1 consists of an RC 2-way beam/slab and column structure constructed using brick aggregate. The Soils Report recommends precast piles driven 25ft below base level (or alternatively, RC in-situ piles) located under RC pile caps to support columns. However, pad footings at 5’ – 6” below EGL are shown on structural drawings. The building contains one expansion joint. The Dining Buildings and the Boiler House are Steel Sheds. The other Utility Buildings and the Security Building are small structures with concrete slab on column/wall construction.

We received the following information for Building 1:• Permit drawing (Oct 2003 by LGED) and Industrial Approved Drawing (2014). Architectural and as-built

Structural Drawings.• Soils Report dated May 2003.No drawings were available for the other buildings.

We have important and urgent concerns in relation to the adequacy of the structural support columns for Building 1. Columns appear to be stressed to levels that require immediate review. The following immediateactions are required to be carried out:1. Water tanks (2 No.) at roof level in Building 1 must be emptied.2. Loading (to include equipment and live loading) must be removed immediately from the areas noted by “X”

in the all floors (above Ground floor) in Building 1 and these areas of all floors should remain unoccupied.3. A Detail Engineering Assessment of the as-constructed building is requested and this should be carried out

immediately to the requirements of the scope attached and addressing the concerns as noted.If the Building owners are not in a position to complete these actions immediately, the Building should be reclassified as Category Red and evacuated.

1 2Roof

4

Executive Summary (Continued) Water tanks to be completely emptied

Area of 4th and 5th floor to have all loads removed including equipmentN

R.C

.C W

ate

r Ta

nk

(1

)

R.C

.CW

ate

r Ta

nk

(2

)

N

Roof Level 4th and 5th Floors

Water tanks to be completely emptied.

Area marked “X” on all floors above Ground floor to have all loads removed including equipment and to remain unoccupied (except for access to toilets and stairs) pending recommendations arising from DEA.

Section A- A

A A

3rd

2nd

1st

4th

5th

5

Executive Summary (Continued)

The following high level and non exhaustive list of key concerns are noted:Building 1ITEM 1: High Column stressITEM 2: Water tanks at Roof LevelITEM 3: Raised Floor at Washing and drying Area on 2nd FloorITEM 4: Removal of partially demolished construction at roof level ITEM 5: Cracked Column at Porch (G-10) on Ground Floor level

Dining and Boiler House Buildings ITEM 6: Apparently Non-engineered Steel Sheds

Further actions with associated priorities and timeframes are given at the end of this report. Please note that these actions should be completed as soon as practically possible and certainly within the time frame noted.

We have reviewed the property from an outline seismic perspective and would consider that the building, along with many others in the Dhaka region, to be at significant risk of damage in a major Seismic event.

Our Limitations and Assumptions are also noted at the end of this report.

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Building Extents

Building Extents – Location Plan7

Coordinate: 23.644126N, 90.489626E

Boiler Room B9

Pump House B8

Dining Shed B B2

Dining Shed A B2

HT Meter Room B6

Guard House B3

Gas meter room B7

Main Production Building B1

Generator & Substation Room

B4

Chemical Store B5

Main Production Building B1

9 Building Extents B1 – Elevations

South (Front) Elevation North Elevation

East ElevationWest Elevation

10Building Extents B1: Current floor usage

Store, Winding & ETP Plant Ground Floor

Office, Finishing, Inspection 1st floor

Wash, Iron & Sewing 2nd floor

Linking, Trimming, Mending 3rd floor

Knitting 4th floor

Knitting 5th floor

Water Tanks Roof with tin roof partially demolished

Dining Shed A & B

West (Front) Elevation: Dining Shed B South Elevation: Dining Shed B

North-West Elevation: Dining Shed A

Building Extents – Elevations

Guard House, Gas Meter Room

&

HT Meter Room

East (Front) Elevation: Guard House

South (Front) Elevation: HT Meter RoomSouth (Front) Elevation: Gas Meter Room

Building Extents – Elevations

Generator, Substation Room

&Chemical Store

West (Front) Elevation: Substation and Generator Room

West (Front) Elevation: Chemical Store

Building Extents – Elevations

Pump House & Boiler Room

North (Front) Elevation: Pump House South (Front) Elevation: Boiler Room

Building Extents – Elevations

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Structural System

20

Structural System B1

Structural System:The R.C frame has beams with two way spanning slab

• Columns: 300 x 375 mm RC375 × 375 mm RC

• Aggregate : Brick• Grid: 4.925m x 6.08m (Typical)• Beams:

1. 285mm width & 355mm down stand

2. 275 mm width & 235mm down stand

• Slab : 150 mm thick (avg. excluding floor finishes

• Floor to Ceiling: 3.2m (avg.)• Foundation: Pad Foundation

according to structural drawingStability System: assumed to be a moment frame with infill masonry panels

Cantilever

Architectural permit Drawing showing Grid system

N

4.97m4.93m4.98m

4.92m4.98m

5.7

8m

5.7

8m

5.7

8m

5.7

8m

5.8

m5

.66

m6

.08

m6

.08

m6

.02

m5

.4m

Expansion Joint

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Structural System B1

Typical internal column/beam support system

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Observations

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High Column Stress

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Observation – High column stress

High Column Stress:

Columns at Ground and First floor levels throughout the building appear to be stressed to levels that are in excess of recommended values.

Columns in areas under water tanks and under toilets appear to be very highly stressed.

Immediate actions are required as noted in the Priority Actions section of this report to reduce the column stresses

Cantilever

N

Expansion Joint

25

Water tanks at roof level

26

65,000 Litre R.C Water tank (2)

65,000 Litre R.C Water tank (1)

Water tanks at Roof Level

Observation - Water tanks at Roof Level

R.C

.C W

ate

r Ta

nk

(1)

R.C

.C W

ate

r Ta

nk

(2)

N

Architectural Permit Drawing

27

Washing and drying Area on 2nd Floor

28

230mm solid build-up

Observation - Floor Loading at 2nd floor.

N Wash/Drying Area

2nd Floor Wash/Drying Area

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Partially Demolished construction at roof level

30

Shed at roof level is partially demolished

Observation - Loading at roof level

N

Existing shed

DemolishedShed

Demolished shed

Architectural Permit Drawing

31

Cracking in column at porch

32 Observation - Cracking in column at porch

Cracked Column at Porch (G-10)

N

33

Apparently non engineered roof structures to Dining and Boiler House Buildings

34 Observation –Apparently non engineered roofs

Dining Shed

Boiler House Shed

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Priority Action

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Problems Observed

Building 1ITEM 1: High Column stressITEM 2: Water tanks at Roof Level ITEM 3: Raised Floor at Washing and drying Area on 2nd FloorITEM 4: Removal of partially demolished construction at roof level ITEM 5: Cracked Column at Porch (G-10) on Ground Floor level

Dining and Utility Buildings ITEM 6: Apparently Non-engineered Steel Sheds

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Building 1

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Priority 1(Immediate - Now)

Item 1 and 2 and actionsHigh Column stress Water tanks at Roof Level

Priority 2(within 6-weeks)

• Produce and actively manage a loading plan for all floor plates within the factory giving consideration to floor capacity and column capacity.

• Detail Engineering Assessment to be completed

Priority 3(within 6-months)

• None Required

• Empty Water tanks on roof. Provide isolated small plastic water tanks distributed in the roof area as directed by the Factory Engineer.

• Remove dead and live loading on all floors as noted on next page. • Factory Engineer to review design, loads and columns stresses in all areas.• Factory Engineer to determine reinforcement in ground level columns immediately. • Verify insitu concrete strengths by taking a minimum of 4 no. 100mm diameter cores

from columns at ground floor• A Detail Engineering Assessment of Factory to be commenced, see attached Scope

1 2Roof

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Water tanks to be completely emptied

Area of 4th and 5th floor to have all loads removed including equipmentN

R.C

.C W

ate

r Ta

nk

(1

)

R.C

.CW

ate

r Ta

nk

(2

)

N

Roof Level 4th and 5th Floors

Water tanks to be completely emptied.

Area marked “X” on all floors above Ground floor to have all loads removed including equipment and to remain unoccupied (except for access to toilets and stairs) pending recommendations arising from DEA.

Section A- A

A A

3rd

2nd

1st

4th

5th

Immediate actions required

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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 Elevation 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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Priority 1(Immediate - Now)

Item 3 and actionsRaised Floor at Washing and drying Area on 2nd Floor

• None required

Priority 2(within 6-weeks)

• As part of the Detailed Engineering assessment (see Item1) Factory Engineer to verify that the 2nd floor slab and beams can safely carry the superimposed dead load resulting from raised floor build-up (circa 230mm) along with all other dead and imposed loads.

• Carry out any remedial actions as directed by the Factory Engineer.

Priority 3(within 6-months)

• None required

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Priority 1(Immediate - Now)

Item 4 and actionsRemoval of partially demolished construction at roof level

• None required

Priority 2(within 6-weeks)

• Factory Engineer to ensure all remaining walls and steel roof construction at roof level are demolished and removed.

Priority 3(within 6-months)

• None required

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Priority 1(Immediate - Now)

Item 5 and actionsCracked Column at Porch (G-10) on Ground Floor

• None required

Priority 2(within 6-weeks)

• As part of the Detailed Engineering Assessment (see Item 1) Factory Engineer to assess structural capacity of existing cracked column under Porch (G-10) and recommend replace/repair as necessary, if required.

• Carry out any remedial actions as directed by the Factory Engineer.

Priority 3(within 6-months)

• None required

44

Dining and Utility Buildings

45

Priority 1(Immediate - Now)

Item 6 and actionsApparently Non-Engineered Steel Sheds (Dining and Boiler House Buildings)

• None required

Priority 2(within 6-weeks)

• None required

Priority 3(within 6-months)

• Factory Engineer to review design and construction of apparently non-engineered steel sheds in Dining and Boiler House buildings.

• Carry out any remedial works as directed by the Factory Engineer.

46

This report is for the private and confidential use of Accord for whom it was prepared together with their professional advisors as appropriate. It should not be reproduced in whole or in part or relied upon by third parties for any use without the express written permission of Arup.

This report can be used in discussion with the supplier or factory owner as a means to rectify or address any observations made. The report is not comprehensive and is limited to what could be observed during a visual inspection of the building.

This Report is not intended to be treated as a generalised inspection and does not cover the deterioration of structural members through dampness, fungal or insect attack, nor does it deal with problems and defects of a non-structural nature. Other non structural aspects of the building such as fire safety have not been assessed in this survey.

Except as otherwise noted, drains and other services were not viewed or tested during our inspection and are therefore similarly excluded from this Report. We have not inspected any parts of the structure which are covered, unexposed or inaccessible and we are therefore unable to report that any such part of the property is free from defect.

External inspection of the façade walls has generally been carried out from ground level only by visual sighting. No opening up works were carried out (except as noted) and we rely on the Architects and Engineers drawings provided to us for our views on concealed parts of the structure and in particular foundations. Strengths of materials and components are untested and we recommend that the factory owners Building Engineer carries out insitu testing over and above those suggested to satisfy themselves with the material strengths and component details.

Recommendations, where given, are for the purpose of providing indicative advice only, are not exhaustive, relate solely to identifying key and obvious structural defects as identified in this presentation, and do not take the form of or constitute a specification for works. We take no responsibility for the works as constructed. This report does not interfere with the factory owners Building Engineers responsibility for the structural performance of this building, The Building Engineer remains fully responsible for the structural adequacy of the building.

This report does not comment in detail on the future seismic performance of the building and only highlights the fact that the building may experience significant damage or collapse in a seismic event along with many others in the Dhaka region.

The observations in this report are based on the Engineering Judgement of the lead surveyor/engineer at the time of the survey. We assume in making these observations that no covering up of faults defects, filling or plastering over cracking or significant repair work has been carried out by the building owner. Any future alteration or additional work by the building owner will void this report.

Survey Limitations and Assumptions