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Safety assessment in design and preparation phase

Safety assessment in design and preparation phase. Arbouw Health and Safety in construction industry. Paul Swuste, TU Delft. Adri Frijters, Arbouw. Amsterdam, The Netherlands. www.arbouw.nl. Problem. Design a model designer can use

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Safety assessment in design and preparation phase

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  1. Safety assessment in design and preparation phase Arbouw Health and Safety in construction industry. Paul Swuste, TU Delft. Adri Frijters, Arbouw. Amsterdam, The Netherlands. www.arbouw.nl

  2. Problem Design a model designer can use to chosebetween alternativebuildingelements on basis of safety aspects during execution phase

  3. Method and techniques • Literature review • Method • Test / case Falling from …. Stumbling ….

  4. Result • Based upon • BS8800 • EN1005 and EN292-1 • Method • Analyse elements • Function and properties • Initial and final situation • Selection of alternatives • Activities • Assessment & improvements • Selection of element

  5. Case study • Eurotoren

  6. Floor systems • Hollow-core beam slab • Wide-slab floor

  7. The method • Preconditions • Inventory of applicable building systems • Determing the boundaries of the system • Inventory of the activities per construction form • Identification of hazards • Determing the risk • Decision regarding the acceptability of the risk • Allocating the man-hours to the activities • Determing exposure • Choice of building element

  8. The method • Preconditions • Inventory of applicable building systems • Determing the boundaries of the system • Inventory of the activities per construction form • Identification of hazards • Determing the risk • Decision regarding the acceptability of the risk • Allocating the man-hours to the activities • Determing exposure • Choice of building element

  9. Inventory of the activities Hollow core-beam floor • Erecting guardrail • Setting out dimensions • Applying bearing felt • Inserting end filling • Laying floor elements • Fitting bars • Applying tension rods • Pouring joints Wide-slab floor • Erecting guardrail • Setting out dimensions • Adjusting props • Laying slabs • Checking dimensions • Dimensions reinforcement • Transport reinforcement • Welding-wire meshing • Twisting reinforcement • Preparing pouring • Arranging equipment • Pouring floor • Clearing up • After care • Cleaning • Stripping props

  10. The method • Preconditions • Inventory of applicable building systems • Determing the boundaries of the system • Inventory of the activities per construction form • Identification of hazards • Determing the risk • Decision regarding the acceptability of the risk • Allocating the man-hours to the activities • Determing exposure • Choice of building element

  11. Determing the Risk

  12. The method • Preconditions • Inventory of applicable building systems • Determing the boundaries of the system • Inventory of the activities per construction form • Identification of hazards • Determing the risk • Decision regarding the acceptability of the risk • Allocating the man-hours to the activities • Determing exposure • Choice of building element

  13. Acceptability of risk Wide-slab floor Falling and stumbling

  14. The method • Preconditions • Inventory of applicable building systems • Determing the boundaries of the system • Inventory of the activities per construction form • Identification of hazards • Determing the risk • Decision regarding the acceptability of the risk • Allocating the man-hours to the activities • Determing exposure • Choice of building element

  15. Allocating man-hours Hollow core-beam floor • Erecting guardrail 4.00 • Setting out dimensions 2.00 • Applying bearing felt 1.70 • Inserting end filling 3.36 • Laying floor elements 10.80 • Fitting bars 0.08 • Applying tension rods 0.08 • Pouring joints 1.48 Wide-slab floor • Erecting guardrail 4.00 • Setting out dimensions 2.00 • Adjusting props 15.12 • Laying slabs 13.00 • Checking dimensions • Dimensions reinforcement • Transport reinforcement • Welding-wire meshing • Twisting reinforcement 19.50 • Preparing pouring • Arranging equipment • Pouring floor • Clearing up • After care • Cleaning14.33 • Stripping props 15.12

  16. The method • Preconditions • Inventory of applicable building systems • Determing the boundaries of the system • Inventory of the activities per construction form • Identification of hazards • Determing the risk • Decision regarding the acceptability of the risk • Allocating the man-hours to the activities • Determing exposure • Choice of building element

  17. Determing exposure Wide-slab floor • Erecting guardrail 4.00 • Setting out dimensions 2.00 • Adjusting props 15.12 • Laying slabs 13.00 • Checking dimensions • Dimensions reinforcement • Transport reinforcement • Welding-wire meshing • Twisting reinforcement 19.50 • Preparing pouring • Arranging equipment • Pouring floor • Clearing up • After care • Cleaning14.33 • Stripping props 15.12 Hollow core-beam floor • Erecting guardrail 4.00 • Setting out dimensions 2.00 • Applying bearing felt 1.70 • Inserting end filling 3.36 • Laying floor elements 10.80 • Fitting bars 0.08 • Applying tension rods 0.08 • Pouring joints 1.48

  18. Choise of element Wide-slab floor • Erecting guardrail 4.00 • Setting out dimensions 2.00 • Adjusting props 15.12 • Laying slabs 13.00 • Checking dimensions • Dimensions reinforcement • Transport reinforcement • Welding-wire meshing • Twisting reinforcement 19.50 • Preparing pouring • Arranging equipment • Pouring floor • Clearing up • After care • Cleaning14.33 • Stripping props 15.12 Hollow core-beam floor • Erecting guardrail 4.00 • Setting out dimensions 2.00 • Applying bearing felt 1.70 • Inserting end filling 3.36 • Laying floor elements 10.80 • Fitting bars 0.08 • Applying tension rods 0.08 • Pouring joints 1.48

  19. Conclusions and Recommendations • Method works • Method is easy to use • Method is labour-intensive • Database • Use in case of doubt • Fulfil safety in design phase • Acceptable Thank You for your attention www.arbouw.nl frijters@arbouw.nl

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