Wednesday, December 18, 2013

BMC notice to Saburi Building and Structural Audit Report 2013 Dec


04thDecember, 2013

TO WHOM SO EVER IT MAY CONCERN

Sub:  STRUCTURAL AUDIT REPORT
Ref: The Building Known as ‘Saburi / Dias Building’ located atVakola Bridge, Santacruz (East), Mumbai – 400 055
            The undersigned Mr. Kantilal Lalpuria of TOTAL SOLUTION visited and inspected the building referred above with respect to the present condition, the general state as well as the audit requirement.
            The existing structure of the said Buildingconsists of Load bearingand partly RCC Frame having ground plus1floor. The building was constructed in year 1942, thus building is about 71 years old
                  The structural condition of the building R.C.C & load bearing member is in a veryweak condition.All the columns ,beams& slabs are having very wide structuralunrepairable cracks at the base and damaged badly.Slabs are badly corroded due to leakages in surrounding areas .Beams above windows are having deflections in concrete due to that window stones are cracked in center and causing difficult to open the windows. Based on visual inspection, it is felt that the structure is unrepairable, dangerousand is in unsafe condition. Mishaps like instances of wall, ceiling and passage collapsesmay occurat any time.
The building is in poor condition due to lack of proper maintenanceand  old age .
At many place structural member have wide cracks with exposed reinforcement. Reinforcement members are exposed corroded, the area of reinforcement is significantly reduced due to excessive corrosion and some place it is broken.
External column has wide longitudinal cracks. At some place slab has cracks sound hollow. At some place wall plaster is in poor condition, heavy leakage / dampness in rooms, internal column are in poor condition.
Structural members have wide cracks; reinforcement is exposed and heavily corroded due to excessive corrosion
Vegetation growth is observed at many places on drainage pipesand  along drainage pipes which are leaking at junctions.
The plot is lower than existing road and is in low lying area compared to other new developments and other plots nearby (where earth filling is done to increase their ground level). In this plot water gets accumulated everywhere from adjoining plots and roads leading to structural deterioration and impede other electrical risk like short circuit etc.
The building isin a dangerous state due to water accumulation over the ground floor level which causes flooding. The moisture from the water stagnated for a long period have weakened the structures to such an extent that they have become inhabitable. This condition also arises because regular repairs are not conducted. These are needed as per the age of building. 
Audit aim is to caution members about conditions of building and ask them to vacate the premises, which is unrepairable and dangerous to stay in.
The building is in a ruinous condition, beyond repairs. As I am told, that for lastseveral years no major structural or civil and painting work was carried out though buildings need it.Major separations, structural, shrinkage cracks were found on external side of wall & external plaster of building. Most of locations plaster has washed away, fungus and plants are also has growth on dead walls and chajjas. Structural strength of concrete in column beams and slabs are found to be weak.

Internally we found that in most of roomsstructural members like column, beams slab, balcony and loft slabs are found in badly damaged condition.

We are enclosing herewith the Internal Survey report of all internal area, Staircases and terrace as well as External observations that need structural repairs as per our survey carried out on 27.11.2013in the said Building premises.          
Conclusion
·         Looking to the condition of the building and visible major cracks and poor maintenance of the building it has become unsafe for human habitation.
·         At this stage, structural repairing will not add substantial strength to the structure in its balance serviceable life.
·         The repairing will not stop further deterioration process entirely.
·         The balance serviceable life is unpredictable even after carrying out major structural repairs.

 

 

We advice

The repairing and further maintenance cost may prove disproportional with respect to balance service life.  Thus we believe going into redevelopment of property is the best choice as repairs will be a very costly affair and a periodic one.
           
Looking to the condition of load bearing & partly RCC frame structure and foundations of  the building it can be said with authority that not only  lifeand property of the  occupants of this building  but also life and property of residents of the surrounding building and structures are at grave risk as such structure  can collapse without giving any warning. In view of the above in our opinion the owner should enter in to redevelopment of the building. 
                 
We further advice that all future repairs & renovation work shall be carried out under guidance of a structural engineer though same too will be risky and will not improve chances of safety and life of building.
                  Please feel free to contact us in case of further guidance on the matter above

Thanking you,
Yours truly,
For TOTAL SOLUTION


(KaantilalLalpuria)
Consulting Structural engineer
B.M.C.Reg.No.STR/L/21

Note: -
·         The above report is based on visual inspection only. The aim is to have preliminary health check-up of a building
·         Overall condition of RCC structure is in poor condition and redevelopment is the best option.
·         In absence of design data and as built drawing, the resistance of the structure for earthquake forces / wind forces cannot be assessed.
·         It may not be possible to identify the distress in the structure below ground level. Detailed investigation if needed, are to be carried out separately.
·         Column and beam of the R.C.C frame have major cracking occurred in the concrete due to weathering condition and water seepage.



Encl:  Detailed Survey report & photographs.







REPORT AT A GLANCE FOR Saburi / Dias Building
1.    Based on visual inspection, it is felt that non-destructive tests are necessary.
2.    Over all condition of load bearing & partly RCC is found in poor  condition
3.    Most of Columns, beams have wide cracks including marble and steel is also visible. Vertical corner Columns, Beams bottoms and sides are found damaged..
4.    Most structural members are damaged & have deficiency in structural concrete causing distress on structural members. Central beams and columns in balcony are found in damaged condition.
5.    Nahni trapsand toilet block on first floor are leaking causing damages in surrounding area and affecting the area below which is toilet block and passage on ground floor.
6.    In most of the rooms structural deficiencies are found viz. in common column, beam and window top beams.
7.    In mostrooms, lintels above windows are sagged; having structural cracks resulting in weakness, seepage of water, corrosion of steel, etc. The lintels have hence bent and caused most of window framing to be cracked. We recommend removing all windows, repairing cracks, placing structural steel channels if required carrying out structural polymer repair and then refixing windows.
8.    Internal leakages are due to damaged nahni traps or due to leaking plumbing joints.
9.    Corner has heavy monsoon leakage and damaged column throughout height.
10. External dead walls of all the wings are having separations, structural, shrinkage and spider type cracks causing leakages in rooms.
11. Plant growths are also observed in plumbing duct area
12. During survey we observed that hotel is situated  within the compound open area and its roof slab is supported on existing building structure causing loading on existing building structure which is already very weak due to leaking toilet blocks and being 71 years old building.
13. There are lots of rats and rodents in building compound due toadjacent to mithi river nala and building property houses hotel. These rats have dug and made base hollow and weak affecting the earth below building foundations which is very dangerous as building is more than 70 years old.
14.  Earth in plinth level is also affected due to rats and rodents and as a result ground floor flooring having settlement and became uneven.
15. Terrace flooring is badly damaged having wide cracks, pit holes  and plant growth  which is causing heavy leakages in rooms below to prevent leakages. Shalimar sheeting applied on floor and parapet wall are already old and worn out.
16. Parapet wall  top is having major cracks  causing leakages in room below   sides of parapet wall  entire area plaster is also having  cracks and having hollow sound .
17. Junction of parapet wall is also having plant growth roots of which is damaging terrace floor.


For details refer to attached photographs



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SABURI FORMMERLY KOWN AS DIAS BUILDING
Room wise internal & external Survey
Ground floor
East Side Room
Two common columns are  in damaged condition and steel also visible
North side
Room no 1-
South side wall and ceiling has monsoon leakage from external side
North side wall and ceiling has monsoon leakage from upper floor
Room no-2
Ceiling plaster has fallen down and steel also visible
South side wall and ceiling has LIVE LEAKAGE from upper floor
West side
Wall and ceiling has LIVE LEAKAGE from upper floor
Wall and ceiling plaster has fallen down
Flooring has uneven including ladhi
Passage -ceiling plaster IS fallen down steel   is also visible
Wall plaster has fallen down
West side external garage
Ceiling plaster has fallen down steel is also visible
Hotel external side drainage side Wall and ceiling are Dilapidate condition and having loose plaster
Column is in  badly damage condition
North side
Office- ceiling has loose plaster and seepage from upper floor

First floor
Bathroom passage –ceiling plaster has fallen down and steel also visible
Ceiling has seepage
First floor passage ceiling has seepage
East side room
Ceiling plaster has bulged
Window top beam has major structural crack
North side room
Ceiling plaster has bulged and live leakage from external side
Main door top beam has vertical crack
External side
North side
Plant growth on the terrace parapet wall and wall is in  damaged  condition
First floor Window sill wall has seepage, cracks and loose plaster
Ground floor wall has loose plaster and seepage from first floor
East side
Ground floor common column is damage condition
Wall plaster has fallen down
First floor chajja has badly damage condition steel also visible
Terrace parapet wall has damage condition and having plant is growth
South side
Ground to first floor wall plaster has fallen down
First floor chajja has damage condition
External side staircase railing has damage condition and steel also visible
East side compound wall has major crack
 Staircase
 South side column has major crack
Head room -Ceiling has damage condition and steel also visible
Railing is in damaged condition
Supported beam and column has damage condition
Terrace
Terrace flooring is badly damaged having wide cracks, pit holes  and plant growth  which is causing heavy leakages in rooms below to prevent leakages Shalimar sheeting  has done on floor and parapet wall.
Parapet wall  top is having major cracks  causing leakages in room below   sides of parapet wall  entire area plaster is also having  cracks and having hollow sound
Junction of parapet wall is also having plant  growth roots of which is damaging terrace floor.















































































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