Star Garments (Pvt Ltd.)Sha-23, Middle Badda, Dhaka.

(23.780094N, 90.426299E)

02 July 2014

1

2

Observations

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Inconsistencies between the drawings and the as constructed building

4

Observation Factory building – typical floor layout, actual column distribution

Irregularities on drawings - Column and Cores

Column missingConcrete core

5

Expansion Joint

Factory building – typical floor layout

Expansion JointEvident on roof where waterproofing detail has been applied. Double columns evident along line of EJ (not shown on drawings)

Observation

Expansion Joint not shown on drawings

6

Cantilever on E side of buildingCantilever extension to provide space for Toilet block

Observation

Cantilever on E side not shown on drawings

7

Loading on Roof

8 Observations - Concrete water tank on the roof

Factory building – typical floor layout

Concrete water tank

RC water tank on the roof3.35m x 5.5m x 1.2m dp water reservoir located at Roof level.The long S side of the water reservoir is supported along the column line (assumed to be on two columns), but the N side supported on stub columns directly on roof slab.Ponding of water at the base of the stub columns indicated some deflection; however no distress in the slab was noticed from under side (3rd Floor ceiling)

North

9Observations – Toilet built up

Built up toilet

Factory building – typical floor layout

Toilet built upFloor build-up in the toilet area measured as 150mm, over approximately 50% floor area (within cubicles). Some isolated areas had build-up of 230mm.Additional loads on cantilever at E end (not shown on drawings) and resultant increased loading on columns providing support to the cantilever

North

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Observed Cracking

11Observations - cracking

CracksCracking was noted in a number of beams both vertically and horizontally, and on some façade wallsVertical cracks observed in beams were small and consistent in width down the depth of the beam –appeared to be shrinkage cracksHorizontal cracks in beams coincided with EJ; due to lack of EJ detail allowing movementCracking of façade brick walls also coincident with EJ

12

Testing on Columns

13Observations – concrete in columns

RC columnsTwo columns opened up for testing at Basement level – consistent and good readingsConfirmed stone aggregate concreteUsing Ferroscanner, both rapid scan and detailed scan indicated 6 rebars on long face of internal columns –corresponds to rebar details on Structural drawings, and bars projecting from columns at roof level

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Problems Observed

1. Water reservoir on suspended floor slab

2. Inconsistencies Between Drawings and As Built Construction

3. Future vertical extensions

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Item No. Observation Recommended Action Plan Recommended Timeline

1Water reservoir on suspended

floor slabThe roof slab needs to have its design verified by the Building Engineer for the imposed load of the water tank.

6-months

2Inconsistencies Between

Drawings and As Built Construction

Building Engineer to check, collect information and produce accurate and complete as-built documentation.

6-months

3

Columns may be highly stressed if building is

extended vertically (as planned on permit and

structural drawings)

No vertical extension to be carried out without the following actions being addressed

6-months

4

Columns may be highly stressed if building is

extended vertically (as planned on permit and

structural drawings)

Factory Engineer to review design, loads and columns stresses

6-months

5

Columns may be highly stressed if building is

extended vertically (as planned on permit and

structural drawings)

Verify insitu concrete stresses either by 100mm dia. Cores from at least 4 columns

6-months

6

Columns may be highly stressed if building is

extended vertically (as planned on permit and

structural drawings)

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

6-months