Level 1 factor

Construction engineer

Construction manager

Safety engineer

Tower crane operator

Total

Wt

Rank

Wt

Rank

Wt

Rank

Wt

Rank

Wt

Rank

Dismantling work

0.391

1

0.090

5

0.100

5

0.099

5

0.170

5

Lifting work

0.294

2

0.293

1

0.121

4

0.146

4

0.214

3

Erection work

0.156

3

0.205

3

0.219

3

0.322

1

0.226

1

Prime contractor’s management

0.087

4

0.164

4

0.254

2

0.194

3

0.175

4

T/C machine

0.072

5

0.248

2

0.305

1

0.239

2

0.216

2