Presentation on Summer Trainingheld at Construction Site ofPolice Station Khajuri Khas under Central Public Works Department Project Report
TOPICS IntroductionProject OverviewSite LocationFormworkPlanningSequence of StructuresFinishing WorksProject MonitoringQualityConclusion
INTRODUCTIONAbout CPWD: The Central Public Works Department of India is a Central Government owned authority that is in charge of public sector works in the country. Central Public Works Department (CPWD) under Ministry of Urban Development is entrusted with construction and maintenance of buildings for most of the Central Government Departments, Public undertakings and autonomous bodies. CPWD, Delhi is the premier agency of Govt. of India engaged in planning, designing, construction and maintenance of Government assets in the field of built environment and infrastructure development. Assets in built environment include Hospitals, Schools, Colleges, Technical Institutes, Police Buildings, Prisons, Courts etc.
OBJECTIVES1) Sound Planning And Design2) Engineered Construction3) Effective Maintenance4) Benchmarking the Standards5) Capacity Building6) Public Private Partnership7) Manpower Planning8) Transparency in Management
PROJECT OVERVIEWName Of Work: Construction of Police Station Khajuri Khas, Near Sonia Vihar, Delhi (SH: C/o Police Station Building, Electric sub Station & External Development Work i.e. Internal Electrical Installations)
AGREEMENT NO. : 03/EE/CD-III/2011-12NAME OF CONTRACTOR: M/S ROSHAN REAL ESTATES PVT LTD.PLOT SIZE: 5984 Sqm. AreaESTIMATED COST: Civil Work- Rs 6, 01, 47,287/- Elec. Work- Rs 24, 75,332/- Rs 6, 26, 22,609/-TENDERED COST: Civil Work- Rs 6, 57, 88,182/- Elec. Work- Rs 28, 69,490/- Rs 6, 86, 57,672/-DATE OF START: 04-08-2011STIPULATED DATE OFCOMPLETION: 02-08-2012ACTUAL DATE OF Work is Under ProgressCOMPLETION: (80% Work is Completed)TIME ALLOWED : 365 Days
SITE LOCATIONAdvantages Of this Site Land Store Health Unit Canteen Connectivity Of the Yard Ease Of transportation Facilities
FORMWORKSIGNIFICANCE OF FORMWORK:-1) Formwork constitutes 30% of the cost and 60% of the time in concrete construction.2) Quality of concrete finish and soundness of concrete depends very much on theformwork system3) Desired shape of concrete is not possible if formwork not done properly.4) Formwork should be properly designed, fabricated and erected to receive concrete.5) Accidents happen because of the faulty formwork and scaffolding or stagingSAFETY IN USING FORMWORK:-1) Components are light in weight for manual handling.2) Loose or hanging components are minimal.3) Appropriate use of tools.4) Minimum operations are involved in each reuse.
Planning of a CPWD Project mainly includes:- Pre-requisites for execution of work. Deposit works Preparation of estimates. Execution of original work. Expenditure on survey, exhibition. Register of buildings. Green building norms. Preparation and accounting of Standard Measurement book. Preparation and passing bills for payment. Documentation of accounts. General departmental charges. Contracts and forms. Preparation of tender documents. Publicity of tenders Sale of documents Earnest money. Issue of material to contractors. Issue of tool and plant. Payment to contractors Insurance Losses or damages. Budgeting Quality assurance and technical audit wing. Inspection and Audit by Chief Controller. Public accounts committee.
SEQUENCE OF STRUCTURE WORK Site clearance Demarcation of site Positioning of central coordinate i.e. (0,0,0) as per grid plan Surveying and layout Excavation Bar binding and placement of foundation steel Shuttering and scaffolding Concreting Electrical and plumbing
Construction Process And Material UsedCONCRETE1) Normal Concrete made of Fine Aggregate + Regular Aggregate + Water2) Concrete will set up hard enough in normal weather in about 3 hours3) It takes 28 days for it to reach its fullest strength
Plastering Make sure to wet the surface at which you are applying plaster. This will ensure better sticking of the plaster. Don’t use dry cement over the plastic surface, as there chances of it getting distorted. Use the appropriate amount of water while mixing chemicals or else, there are chances that it won’t set up to the brick wall. Wait for 24 hours after plastering the wall and splatter water over it for the next 3-4 days. The splattered water will ensure better set up of the plaster. If you are doing the patch up work in a smaller area, like in a room, make sure to keep newspaper pieces on the ground, so that if the plaster falls over it, it can be removed. Once dried, it is difficult to remove the plaster.
Allow newly plastered surface to mature for a period of at least 6 months before painting. Rectify existing surface problems such as dampness, cracks etc. before actual painting process. Check for hand prints, greasy fingerprints, algae as well as dirt and stained marks. Use a scraper, putty knife or scrub brush to remove any dirt, grease, rust, or flaking. Fill in the holes, cracks and joints with plaster. Clean and dry the surface. Make sure the area to be painted is well ventilated as well as free of dust. As far as possible, don’t paint under much humid conditions.
Objects to be PaintedInterior wallsExterior WallsMetal SurfacesWooden Surfaces
INTERIOR WALLS Apply a coat of Wall Primer (water thinnable) on new surfaces. Fill and level the minor undulations of wall by applying putty. In case of major undulations on the wall surface, POP (Plaster of Paris) work needs to be carried out. Ensure that the surface is uniformly smooth by sanding after POP or putty work. One liberal coat of Wall Primer (solvent thinned or water thinned) is recommended on puttied areas before the application of top coat. The primer should be allowed to dry for 10 - 12 hours. If the primer coat is not applied over the puttied areas, there can be a patchy appearance of the top coat. Avoid application of putty or filling compound while painting exterior surfaces. Fill up cracks with a 1:3 (by volume) cement and sand mixture. All external drainage pipes must be checked for rusting or leakage. Any faulty plumbing must be rectified Special attention must be given to the roof. Check for cracks near the edges and close to the water reservoirs. Proper masonry or waterproofing work on the ceiling will enhance the performance of the paint.
Exterior WallsPre-painting For exterior surfaces it is very important to undertake repairs of any wall imperfections before commencing painting.. Avoid applying putty or filling compound while painting exterior surfaces. Fill up cracks with a 1:3 cement and sand mixture. All external drainage pipes must be checked for rusting or leakage. Any faulty plumbing must be rectified. Special attention must be given to the roof. Check for cracks near the edges and close to the water reservoirs. Proper masonry or waterproofing work on the ceiling will enhance the performance of the painted surfaces.
Exterior Wall Painting Apply a liberal coat of Asian Paints Exterior Wall Primer using recommended method. Apply two coats of top coat paint at recommended dilution. You can use Apex Weather Proof Exterior Emulsion or Apex Textured Exterior Emulsion or Ace Exterior Emulsion as top coat. A gap of 4 to 6 hours must be given between two coats. It is recommended that horizontal surfaces like the tops of awnings and Parapets must be given an additional coat for greater protection.
Metal Surfaces Surface should be free from dirt, dust, grease, rust, moisture etc. The area which is not to be painted must be covered by a masking tape, paper and/or cloth. For best results, allow the primer coat to dry for 6 hours and dry sand with emery paper no. 320 before application of subsequent coat. Allow the surface to dry overnight after application of primer as above. Apply top coat using the recommended thinner. For best results, apply two coats allowing 8 hours of drying time between two coats. The first coat should be wet sanded with waterproof emery paper grade 400 before applying the second coat.
Wooden SurfacesSurface Preparation: Previously painted wooden surfaces must be properly sanded to remove any dust or grease. Apply wood primer by brush, after thinning to given ratio by recommended thinner. Allow it to dry for 6-8 hrs then apply putty. Sand the applied putty with number 180 sand paper and then apply second coat of wood primer. Now the wooden surface is ready for painting with the top coat
Painting For opaque finish you can choose conventional enamels Apply wood primer by brush, after thinning to given ratio by recommended thinner. Sand the applied putty with 180 no. sand paper & apply 2nd coat of wood primer. Now the wooden surface is ready for painting with the top coat Enamels are normally applied by brushing although they can also be sprayed. The drying time of enamels is longer; hence care must be taken to ensure a dust free environment while the paint film is drying. Two coats of paint is sufficient in most cases, however if the earlier paint shade was significantly darker than the new shade an additional coat of paint is recommended
PROJECT MONITORINGPROJECT MONITORING SYSTEMThe following three reports are made for the tracking- Monthly progress report Job cost report Project performance report.
QualityQuality Control System of CPWD Field Level Circle Level Core Wing at Directorate LevelQuality Assurance Units In The Region Contract & Manual Standards and Specifications Quality Assurance Techno-Legal matters Technology Application & Standards Unit.
CONCLUSION It was a wonderful learning experience at CPWD office, IP Bhawan, New Delhi 110002 for Six Weeks. I gained a lot of insight regarding FINISHING aspects of Construction site. I was given exposure in almost all the departments at the site, but I had liked to highlight the areas of safety, quality management, material management and execution. I hope this experience will surely help me in my future and also in shaping my career.