1

Why resource efficient 1 ?

“demand of developing countries rise 200%”

2

“iron ore output Europe only 6%”

EUROPA = 6%

Why resource efficient 2 ?

3

European flagship pollicy

“A resource-efficient Europe”

4

Dutch pollicy: Bouwbesluit 2012

“Quantify CO2 footprint and resource-efficiency”

5

M2i project 2012 (SME partners)

Aronsohn

6

Enquiry

7

Enquiry: highlights

“tendency towards higher material qualities”(in general)

8

Enquiry: highlights

“tendency towards more sustainable materials”(in general)

9

Enquiry: highlights

“High strength steel is sustainable”

10

Case study

11

Carbon footprint: beams

- S460 = saving 13% CO2

- S690 = saving 29% CO2

12

Carbon footprint: columns

- S460 = saving 28% CO2

- S690 = saving 36% CO2

13

Joints: what is demanding ?

Tension resistanceCapacitity diagonalBearing resistance

Conclusion: capacity JOINT demanding

2000 kN4 bolds M36-8.8UC = 0,75

14

Conclusions: joints

Bolted joint is demanding for dimensions of member

Joint determines carbon footprint

Welded joint smaller than bolted joint

Welded joint results in SMALLER carbon footprint

15

Questions ?

Thank you !