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Safety assessment in design and preparation phase Arbouw Health and Safety in construction industry. Paul Swuste, TU Delft. Adri Frijters, Arbouw. Amsterdam,

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Presentation on theme: "Safety assessment in design and preparation phase Arbouw Health and Safety in construction industry. Paul Swuste, TU Delft. Adri Frijters, Arbouw. Amsterdam,"— Presentation transcript:

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 model Design a model designer designer can use chose building elements to chose between alternative building elements on safety basis of safety aspects execution phase during execution phase

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

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

5 Case study Eurotoren

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

7 The method 1.Preconditions 2.Inventory of applicable building systems 3.Determing the boundaries of the system 4.Inventory of the activities per construction form 5.Identification of hazards 6.Determing the risk 7.Decision regarding the acceptability of the risk 8.Allocating the man-hours to the activities 9.Determing exposure 10.Choice of building element

8 The method 1.Preconditions 2.Inventory of applicable building systems 3.Determing the boundaries of the system 4.Inventory of the activities per construction form 5.Identification of hazards 6.Determing the risk 7.Decision regarding the acceptability of the risk 8.Allocating the man-hours to the activities 9.Determing exposure 10.Choice of building element

9 Inventory of the activities Wide-slab floor 1.Erecting guardrail 2.Setting out dimensions 3.Adjusting props 4.Laying slabs 5.Checking dimensions 6.Dimensions reinforcement 7.Transport reinforcement 8.Welding-wire meshing 9.Twisting reinforcement 10.Preparing pouring 11.Arranging equipment 12.Pouring floor 13.Clearing up 14.After care 15.Cleaning 16.Stripping props Hollow core-beam floor 1.Erecting guardrail 2.Setting out dimensions 3.Applying bearing felt 4.Inserting end filling 5.Laying floor elements 6.Fitting bars 7.Applying tension rods 8.Pouring joints

10 The method 1.Preconditions 2.Inventory of applicable building systems 3.Determing the boundaries of the system 4.Inventory of the activities per construction form 5.Identification of hazards 6.Determing the risk 7.Decision regarding the acceptability of the risk 8.Allocating the man-hours to the activities 9.Determing exposure 10.Choice of building element

11 Determing the Risk Minor injuryInjurySerious injury Highly improbable Insignificant risk Acceptable risk Moderate risk Improbable Acceptable risk Moderate risk Significant risk Probable Moderate risk Significant risk Unacceptable risk

12 The method 1.Preconditions 2.Inventory of applicable building systems 3.Determing the boundaries of the system 4.Inventory of the activities per construction form 5.Identification of hazards 6.Determing the risk 7.Decision regarding the acceptability of the risk 8.Allocating the man-hours to the activities 9.Determing exposure 10.Choice of building element

13 Acceptability of risk Wide-slab floor Falling and stumbling

14 The method 1.Preconditions 2.Inventory of applicable building systems 3.Determing the boundaries of the system 4.Inventory of the activities per construction form 5.Identification of hazards 6.Determing the risk 7.Decision regarding the acceptability of the risk 8.Allocating the man-hours to the activities 9.Determing exposure 10.Choice of building element

15 Allocating man-hours Wide-slab floor 1.Erecting guardrail 4.00 2.Setting out dimensions 2.00 3.Adjusting props 15.12 4.Laying slabs 13.00 5.Checking dimensions 6.Dimensions reinforcement 7.Transport reinforcement 8.Welding-wire meshing 9.Twisting reinforcement 19.50 10.Preparing pouring 11.Arranging equipment 12.Pouring floor 13.Clearing up 14.After care 15.Cleaning 14.33 16.Stripping props 15.12 Hollow core-beam floor 1.Erecting guardrail 4.00 2.Setting out dimensions 2.00 3.Applying bearing felt 1.70 4.Inserting end filling 3.36 5.Laying floor elements10.80 6.Fitting bars 0.08 7.Applying tension rods 0.08 8.Pouring joints 1.48

16 The method 1.Preconditions 2.Inventory of applicable building systems 3.Determing the boundaries of the system 4.Inventory of the activities per construction form 5.Identification of hazards 6.Determing the risk 7.Decision regarding the acceptability of the risk 8.Allocating the man-hours to the activities 9.Determing exposure 10.Choice of building element

17 Determing exposure Wide-slab floor 1.Erecting guardrail 4.00 2.Setting out dimensions 2.00 3.Adjusting props 15.12 4.Laying slabs 13.00 5.Checking dimensions 6.Dimensions reinforcement 7.Transport reinforcement 8.Welding-wire meshing 9.Twisting reinforcement 19.50 10.Preparing pouring 11.Arranging equipment 12.Pouring floor 13.Clearing up 14.After care 15.Cleaning 14.33 16.Stripping props 15.12 Hollow core-beam floor 1.Erecting guardrail 4.00 2.Setting out dimensions 2.00 3.Applying bearing felt 1.70 4.Inserting end filling 3.36 5.Laying floor elements10.80 6.Fitting bars 0.08 7.Applying tension rods 0.08 8.Pouring joints 1.48 Minor injury Injury Serious injury Highly improbable Insignific ant risk Acceptable risk Moderate risk Improbable Acceptab le risk Moderate risk Significant risk Probable Moderate risk Significant risk Unaccepta ble risk

18 Choise of element Wide-slab floor 1.Erecting guardrail 4.00 2.Setting out dimensions 2.00 3.Adjusting props 15.12 4.Laying slabs 13.00 5.Checking dimensions 6.Dimensions reinforcement 7.Transport reinforcement 8.Welding-wire meshing 9.Twisting reinforcement 19.50 10.Preparing pouring 11.Arranging equipment 12.Pouring floor 13.Clearing up 14.After care 15.Cleaning 14.33 16.Stripping props 15.12 Hollow core-beam floor 1.Erecting guardrail 4.00 2.Setting out dimensions 2.00 3.Applying bearing felt 1.70 4.Inserting end filling 3.36 5.Laying floor elements10.80 6.Fitting bars 0.08 7.Applying tension rods 0.08 8.Pouring joints 1.48 Minor injury Injury Serious injury Highly improbable Insignific ant risk Acceptable risk Moderate risk Improbable Acceptab le risk Moderate risk Significant risk Probable Moderate risk Significant risk Unaccepta ble risk

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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