Safety assessment in design and preparation phase
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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, The Netherlands. www.arbouw.nl. Problem. Design a model designer can use

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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,

The Netherlands.

www.arbouw.nl


Problem

Design a model

designer can use

to chosebetween alternativebuildingelements on

basis of safety aspects

during execution phase


Method and techniques

  • Literature review

  • Method

  • Test / case

Falling from ….

Stumbling ….


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


Case study

  • Eurotoren


Floor systems

  • Hollow-core beam slab

  • Wide-slab floor


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


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


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


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


Determing the Risk


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


Acceptability of risk

Wide-slab floor

Falling and stumbling


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


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 elements10.80

  • 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


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


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 elements10.80

  • Fitting bars 0.08

  • Applying tension rods 0.08

  • Pouring joints 1.48


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 elements10.80

  • Fitting bars 0.08

  • Applying tension rods 0.08

  • Pouring joints 1.48


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

[email protected]


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