Role of Third Party Quality Consultant in Achieving Quality in Construction Presented by Prof. Madhav Mulay. Ex-HOD, Deptt. Of Civil Engineering, Prof. Ramesh Prasad Goojar. HOD, Deptt. Of Civil Engineering, Govt. Polytechnic Thane 1 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. 2 Quality Related Issues Experienced and Solutions provided Capacity building Quality of Material & Testing Problem solving Site Innovations Reporting & Documentation Counseling of Stake holders 5 Capacity building Training cum awareness programmes conducted before, and during the construction Activity For Z.P. officers and Engineers, at district levels. And for SMC members at Block levels 6 Capacity Building Details Fresh Officers, & Engineers lacks in experience of RCC construction work as well as in Executing the work under people’s participation mode Implemented solutions Emphasis is given on Reinforcement detailing , advance construction techniques Awareness about of latest IS codes & earth quake resistant construction. Explanation by Use of 3 D Modeling during Training Selection of material, field and laboratory tests . The Training is supported by illustrative Manual on best practices for RCC construction written 7in local language. Capacity building Reinforcement detailing 8 ILLUSTRATED 3D MODEL OF KITCHEN SHEDS 9 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 Block Mix design for at least each source area carried out before execution of work and same mix followed in future part of the works 10 Quality of Material & Testing Members of SMC specifically trained in procuring Quality construction Materials. works Main emphasis is given on •Selection of Materials, •Field Testing of Materials •Precautions in using Materials •Best practices of construction 11 Field Tests on Materials Field test on Sand and procedure of washing it 12 Quality check for Bricks Bricks should be Wetted for Two Hrs before use Correct way of laying Bricks 13 Use of measuring Boxes for Volumetric Mix 14 Method of Thorough Dry Mixing of Concrete Correct & Incorrect Way of placing Concrete 15 Reinforcement Steel test on computer operated Machine 16 Rebound Hammer Test of Concrete Beam 17 Problem Solving -R .C .C . Designs Details Typical Architectural and structural drawings for the school buildings are supplied by MPSP it did not considered various local site condition. Implemented solutions Separate designs considering foundation strata provided to economize the cost of structure Considering the coastal area of Maharashtra modification in foundation such as provision of Colcrete concrete Layer below footing is proposed 18 Problem Solving - RCC Designs Details Non availability of Land, Variation in foundation strata Likelihood of shallow water table. Issue of Large span and Positioning of Columns, Laying of Reinforcement Implemented solutions Considering shortage of land available & Variation in strata construction of multi-storied RCC structures proposed Possibility of alternative economical design by dividing the span with provision of additional column in walls is considered 19 Foundation Problem –water logged area 20 Proposed foundation in Waterlogged Area 21 Common Quality issues / Problems Details Problems of quality in RCC framed structure work are due to lack of knowledge in construction processes and lack of experiences in constructing RCC structure. Implemented solutions Concerned supervisors , SMC members given input on construction of RCC structure. Timely visit by Consultants helped in eliminating poor quality concrete Attention on following issues is specifically given Cutting, bending, laying, binding of bars, Importance of Negative Reinforcement, lap length in Tension and 22 Compression Common Quality issues / Problems Details Implemented solutions Problems of quality in Size and slope of form RCC framed structure work and centering work are due to lack of Proper size of cover in knowledge in coastal areas construction processes Removal of form work and and lack of experiences in centering constructing RCC Curing of sloping Concrete structure. slabs 23 G+2 RCC School Building 25 G+1 RCC School Building 26 Sloping RCC slab Roof School Building 27 RCC flat +Pyramid shape Slab Roof CRC Building 28 RCC flat +Sloping Slab Roof School 29 RCC flat +2 Pyramid shape Slab Roof30 Site innovations Details The school buildings are constructed with sloping / Pyramid shape slab Implemented solutions Innovative method of filling the concrete from Lower side towards Ridge is developed and the workers are trained to get quality 31 Sloping Slab Laying & compaction Technique32 Sloping Slab Integral Water proofing 33 Site Innovations Details Unsuitability of Ponding method on non approachable sloping slab Scarcity of water Implemented solutions Alternative 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 34 Sloping Slab Trickle curing Technique 35 Sloping Slab Trickle curing Technique 36 Site Innovations Details Better solution for strengthening of poor quality concrete by retrofitting Implemented solutions Non destructive testing are done at intermediate stages and poor quality concrete is strengthen by retrofitting 37 Retrofitting of column 38 Documentation Details All major events, occurrences, test report, photo graph are maintained for future references and evidencing Implemented solutions Foundation strata and water table, Reinforcement details recorded for future references and guidance. Photographs of all stages of work (foundation, Plinth, Slab, Masonry, Finishing) are taken Photographs 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 for39 deriving specific conclusion REPORTING OF BETTER WATER PROOFING TECHNIQUE 40 REPORTING REGARDING POOR QUALITY WORKS 41 Counseling on social problems Details At many places the SMC is either inactive or non cooperative Quality Materials either not purchased or Proper procedure is not followed .Local level politics hampers the progress & Implemented solutions The consultant with involvement of Z.P. officials arranged counseling session with SMC and motivated the SMC Impressed importance of using Quality materials and its long term benefits upon of SMC The consultant acted as counselor in cases of local politics and avoided the rift for the cause and purpose of 42 constructing School Our sincere thanks to: Chief engineer , all engineers & staff of MPSP Mumbai CEO, Executive Engineers, Jr. Engineers and field staff of Zillha Parishad of Maharashtra, NMMC, KDMC, BNMC, TMC & various Municipal Corporations & councils Director tech. Education Maharashtra, Mumbai All the Engineers & staff of Consultants 45 involved in Sarva Shiksha Abhiyan. 46