Presentation on theme: "Presented by Prof. Madhav Mulay."— Presentation transcript:
1 Presented by Prof. Madhav Mulay. Role of Third Party Quality Consultant in Achieving Quality in ConstructionPresented by Prof. Madhav Mulay.Ex-HOD, Deptt. Of Civil Engineering,Prof. Ramesh Prasad Goojar.HOD, Deptt. Of Civil Engineering,Govt. Polytechnic Thane
2 Role of consultant in quality related issues and implemented solution described here is based on hands on experience gained.The issue of quality is important in view of economizing the construction cost, durability, utility, and use of local material as well as manpower.
3 Major Issues of Quality Construction for SSA School Building Constructions in Maharashtra Maharashtra Prathamik Shikshan Parishad Mumbai is an autonomous body implementing the Sarva Shiksha Abhiyan in Maharashtra state.The construction activity is supervised by engineers appointed on contract under SSA or through Z.P. Engineers.
4 A third party inspection and evaluation on quality aspect of civil works started by M.P.S.P. From the yearFor the third party evaluation work M.P.S.P. Is inviting the Technically competent, reputed consultancy firms / organizations and recognized engineering colleges, polytechnics, architects etc.Selection of Third Party consultant is based on rigorous selection Procedure ascertaining competence, technical qualifications, past record and capability of doing works.Bids of the technically qualified consultants are only considered for opening commercial offers
5 Quality Related Issues Experienced and Solutions provided Capacity buildingQuality of Material & TestingProblem solvingSite InnovationsReporting & DocumentationCounseling of Stake holders
6 Capacity buildingTraining cum awareness programmes conducted before, and during the construction ActivityFor Z.P. officers and Engineers, at district levels.And for SMC members at Block levels
7 Capacity Building Details Implemented solutions Fresh Officers, & Engineers lacks in experience of RCC construction work as well as in Executing the work under people’s participation modeEmphasis is given on Reinforcement detailing , advance construction techniquesAwareness about of latest IS codes & earth quake resistant construction.Explanation by Use of 3 D Modeling during TrainingSelection of material, field and laboratory tests .The Training is supported by illustrative Manual on best practices for RCC construction written in local language.
10 Quality of Material & Testing All the Major Materials required for R.C.C. Work Tested on field as well as in Laboratory to the extent of minimum 60 % of works in each BlockMix design for at least each source area carried out before execution of work and same mix followed in future part of the works
11 Quality of Material & Testing Members of SMC specifically trained in procuring Quality construction Materials. worksMain emphasis is given onSelection of Materials,Field Testing of MaterialsPrecautions in using MaterialsBest practices of construction
12 Field Tests on Materials Field test on Sand and procedure of washing it
13 Quality check for Bricks Bricks should be Wetted for Two Hrs before useCorrect way of laying Bricks
18 Problem Solving -R .C .C . Designs DetailsImplemented solutionsTypical Architectural and structural drawings for the school buildings are supplied by MPSP it did not considered various local site condition.Separate designs considering foundation strata provided to economize the cost of structureConsidering the coastal area of Maharashtra modification in foundation such as provision of Col-crete concrete Layer below footing is proposed
19 Problem Solving - RCC Designs DetailsImplemented solutionsNon availability of Land, Variation in foundation strata Likelihood of shallow water table.Issue of Large span and Positioning of Columns, Laying of ReinforcementConsidering shortage of land available & Variation in strata construction of multi-storied RCC structures proposedPossibility of alternative economical design by dividing the span with provision of additional column in walls is considered
22 Common Quality issues / Problems DetailsImplemented solutionsProblems of quality in RCC framed structure work are due to lack of knowledge in construction processes and lack of experiences in constructing RCC structure.Concerned supervisors , SMC members given input on construction of RCC structure.Timely visit by Consultants helped in eliminating poor quality concreteAttention on following issues is specifically givenCutting, bending, laying, binding of bars, Importance of Negative Reinforcement, lap length in Tension and Compression
23 Common Quality issues / Problems DetailsImplemented solutionsProblems of quality in RCC framed structure work are due to lack of knowledge in construction processes and lack of experiences in constructing RCC structure.Size and slope of form work and centeringProper size of cover in coastal areasRemoval of form work and centeringCuring of sloping Concrete slabs
24 Quality work Details Implemented solutions Attributes for Quality in construction under SSASome of the specific issues Insisted uponconcrete Mix design, water cement ratio, Machine mixing of concreteInnovative process of placing concrete on sloping surface and compacting of concrete with Integral water proofingInnovative method of curingIn exceptional cases Demolition & Reconstruction.
30 RCC flat +2 Pyramid shape Slab Roof CRC Building
31 Site innovations Details Implemented solutions The school buildings are constructed with sloping / Pyramid shape slabInnovative method of filling the concrete from Lower side towards Ridge is developed and the workers are trained to get quality
34 Site Innovations Details Implemented solutions Unsuitability of Ponding method on non approachable sloping slabScarcity of waterAlternative method using locally available material such trickling of water through PVC pipes on Sloping slab covered with straw or gunny bag is innovated, practiced and recommended
37 Site Innovations Details Implemented solutions Better solution for strengthening of poor quality concrete by retrofittingNon destructive testing are done at intermediate stages and poor quality concrete is strengthen by retrofitting
39 Documentation Details Implemented solutions All major events, occurrences, test report, photo graph are maintained for future references and evidencingFoundation strata and water table, Reinforcement details recorded for future references and guidance.Photographs of all stages of work (foundation, Plinth, Slab, Masonry, Finishing) are takenPhotographs of poor quality work taken for deciding future course of action.The test Reports properly interpreted and where necessary Repeat tests or NDT carried out for deriving specific conclusion
42 Counseling on social problems DetailsImplemented solutionsAt many places the SMC is either inactive or non cooperativeQuality Materials either not purchased or Proper procedure is not followed.Local level politics hampers the progress & qualityThe consultant with involvement of Z.P. officials arranged counseling session with SMC and motivated the SMCImpressed importance of using Quality materials and its long term benefits upon of SMCThe consultant acted as counselor in cases of local politics and avoided the rift for the cause and purpose of constructing School
43 Conclusions:-Quality of construction is a major focus in of MPSP under SSA.Involvement of Technical Institutes / Technical Competent Agencies as Third Party Consultant in quality evaluation work definitely changes the attitude of the people, enhances the quality of the construction work there by achieve quality, economy & durability of school buildings.
44 Case studyAt village AdiMahadkhadi in ShreeVardhan Taluka of Raigad District the work was held for about 5 to 6 month because the labour contractor has taken a huge amount of advance from the SMC and was not doing the work, we have called the SMC members and advised them to go to the contractor in a group of 10 to 15 members and pressurerize him to start the work and offered our support also the trick worked and finally the work was completed within 2-3 months .44
45 Our sincere thanks to:- Chief engineer , all engineers & staff of MPSP MumbaiCEO, Executive Engineers, Jr. Engineers and field staff of Zillha Parishad of Maharashtra, NMMC, KDMC, BNMC, TMC & various Municipal Corporations & councilsDirector tech. Education Maharashtra, MumbaiAll the Engineers & staff of Consultants involved in Sarva Shiksha Abhiyan.