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Arion Dresses Limited (10556) Klarion Designs Limited Adhunik Chawk Super Market (3rd floor), Chalk Bazar, Chittagong (+ 22.357644N, 91.840028E) 20.MAY.2014
Arion Dresses Limited (10556)
Klarion Designs Limited Adhunik Chawk Super Market (3rd floor), Chalk Bazar, Chittagong
(+ 22.357644N, 91.840028E)
20.MAY.2014
Identified Priority 1 Concerns
- Column at grid line F/4 of Main Building appears to be
overstressed
1st Priority 1 Concern
The interior columns, C1, at grid line F/4 of Main Building is supporting 5 storeys with 6.25 m and 5.84
span length and part of the weight of a water storage on top.
In situ
Size 18” x 18”
Vertical rebar 14 – ϕ 16 mm (1.39%)
Aggregate Brick
Water Storage
6.50 x 2.30 x 1.95 m
From the result obtained, calculation check of
column at grid line F/4 appears to be overstressed
(FoS = 1.29). Other columns probably have
similar levels of overstress.
Remark: Check at ground floor
Identified Priority 2 Concerns
- Inconsistencies between the drawings provided and the
actual as-built conditions,
- Cracks appeared underside of roof slab and column
and
- Diagonal cracks on the storage wall on 4th floor
There are cantilevered slabs and
balconies at the sides of Main
Building that do not appear on the
drawings.
1st Priority 2 Concern
2nd Priority 2 Concern
These cracks are found underside
roof slab and exterior column along
the balcony on 1st floor. It is not clear
whether these cracks are structural
cracks. We require that these items
be investigated in a Detail
Engineering Assessment.
Diagonal cracks were found on both
sides of storage wall on the 4th floor.
However, we did not find any diagonal
crack in this area on the lower floor.
3rd Priority 2 Concern
Identified Priority 3 Concerns
- Reinforcement left exposed at roof level and
- Waterproofing material at roof level to be
maintained/applied
Reinforcement is left exposed. We
were informed that they were painted
with rust proof paint (red oxide).
However, some of them were
remained unpainted.
1st Priority 3 Concern
Unpainted
Painted Painted
2nd Priority 3 Concern
Distress due to water ingress is noted
inside the building (see “Water Ingress”
slide, this report). No waterproofing
material is observed at the concrete roof.
The building does not feature any
shear walls; lateral stability is
provided only through rigid frame
action of beams and columns but it is
unclear if a design to BNBC seismic
provisions was done.
We require that these items be
investigated in a Detail Engineering
Assessment.
There is distress due to water ingress
noted on slabs, beams, columns and
walls.
Problems Observed Summary
ITEM 1: (Priority 1) Columns at grid line F/4 of Main Building
appear to be overstressed.
ITEM 2: (Priority 2) Inconsistencies between the drawings provided
and the actual as-built conditions.
ITEM 3: (Priority 2) Cracks appeared underside of roof slab and
column.
ITEM 4: (Priority 2) Diagonal cracks on the storage wall on 4th floor.
ITEM 5: (Priority 2) Overall stability system.
ITEM 6: (Priority 2) Distress due to water ingress.
ITEM 7: (Priority 3) Reinforcement left exposed at roof level.
ITEM 8: (Priority 3) Waterproofing material at roof level to be
maintained/applied.
Item No. Observation Recommended Action Plan Recommended Timeline
1
Columns at grid line F/4 of Main Building appear to be
overstressed.
Load in this area does not exceed 2.0kPa on every floor.
Factory Engineer to review design, loads and columns stresses ifor the
entire building.
Verify in-situ concrete stresses either by cores or existing cylinder
strength data for [the identified columns / cores from 4 columns].
A Detail Engineering Assessment of Factory to be commenced
immediately.
Immediate – Now
2
Columns at grid line F/4 of Main Building appear to be
overstressed.
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
6-weeks
3Columns at grid line F/4 of Main Building appear to be
overstressed.
Continue to implement load plan.
Implement any strengthening works recommended by the DEA.6-months
4Inconsistencies between the drawings provided and the actual as-
built conditions.
Factory Engineer to survey the actual conditions and revise the
drawings.
Factory Engineer to review design, loads and columns stresses to
confirm suitability for loads applied.
Produce and actively manage a loading plan for all floor plates within
this area giving consideration to floor capacity and column capacity.
6-weeks
5Inconsistencies between the drawings provided and the actual as-
built conditions.Continue to implement load plan 6-months
6 Cracks appeared underside of roof slab and column.
The Factory Engineer to investigate the cause of cracks by appropriate
methods.
The distress found is to be suitably rectified and then repaired.
6-weeks
7 Cracks appeared underside of roof slab and column.Maintain standards of quality control to ensure that loading plan is
correctly followed so that problems do not arise in the future.6-months
Item No. Observation Recommended Action Plan Recommended Timeline
8 Diagonal cracks on the storage wall on 4th floor.The Factory Engineer to monitor the cracks by appropriate methods.
The distress found is to be suitably rectified and then repaired.6-weeks
9 Overall stability system.
Request that the Detail Engineering Assessment of the overall building
to be carried out and in particular, stability and foundation aspects
should be investigated in detail.
6-weeks
10 Distresses due to water ingress.Factory Engineer to inspect water damaged structures and repair with a
suitable method. 6-weeks
11 Distresses due to water ingress.
For both durability and serviceability, rustproofing is recommended.
Waterproofing on the roof slab is recommended. Moreover the slab
drainage system should be investigated.
Maintain standard of quality control.
6-months
12 Reinforcement left exposed at roof level.For both durability and serviceability, rust proof paint or any
appropriate methods is recommended.6-months
13 Waterproofing material at roof level to be maintained/applied.
Engineer to inspect whether waterproofing material is applied or
where it can be maintained.
For both durability and serviceability, waterproofing on the roof slab is
recommended. Moreover the roof slab drainage system should be
investigated.
6-months
