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CV4902- Construction Methods

CV4902- Construction Methods. Dr David Chew. Construction Considerations. Site layout plan Outline of entire construction process Details of temporary works Choice of construction methods Types of construction machineries & equipment to be used

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CV4902- Construction Methods

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  1. CV4902- Construction Methods Dr David Chew

  2. Construction Considerations • Site layout plan • Outline of entire construction process • Details of temporary works • Choice of construction methods • Types of construction machineries & equipment to be used • Potential problems & difficulties during construction • Contingency plans for item above • Safety precautions & measures • Site maintenance & cleanliness • Outline of construction cost • Outline of construction schedule

  3. Outline of Construction Procedure • Phase 1 * on-site works - site clearance & mobilization - erecting hoarding/safety signs - setting up site-office & facilities - creating access/excavation works - piling & excavation

  4. Phase 1 (Continued) * off-site works - fabricate formworks - fabricate reinforcements - fabricate precast concrete (or steel) beams - fabricate precast concrete (or steel) staircases

  5. Phase 2 * Construction of pile-caps * Construction of concrete piers * Construction of concrete cross-heads • Phase 3 * launching of precast concrete/steel beams * launching of precast concrete/steel staircases * concreting of slab (floor)

  6. Phase 4 * Erection of steel roof truss * Other building structural works under the roof * Installation of roof cladding

  7. Phase 5 * inspection * testing & commissioning * permit for occupation/use * handover * operation

  8. Things To Look Out For • Underground Services (Check, Double-Check!) • Existing Foundations (Removed?) • Safety during Construction/Road Diversion • Site Constraints • Access for Works • Launching of Precast Beams/Columns • Launching of Roof Truss

  9. Site Constraints • Protection of Surrounding Structures/Facilities • Types of Heavy Machineries to be Used • Noise/Air/Water Pollution • Disposal of Spoils and Wastes • Limitation of Working Hours • Just-In-Time Construction

  10. Safety Considerations • Public Safety • Safety Distance of Heavy Construction Machineries (from Existing Buildings & roadway) • Restrictions during Busy Traffic Hours • Protection of Existing Facilities • Stability of Temporary Supports • Procedure for Beam/Column Launching & Securing • Stability of Lifting Crane during Launching

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